Auxiliary power supply device for pre-charging test of storage battery of motor train unit

Abstract

The utility model relates to an auxiliary power supply device for a pre-charging test of a storage battery of a motor train unit. The auxiliary power supply device comprises the auxiliary power supply device for the pre-charging test of the storage battery of the motor train unit and a motor train unit test vehicle, the auxiliary power supply device for the pre-charging test of the storage battery of the motor train unit comprises a first connecting cable and a second connecting cable which are arranged on one side; the third connecting cable and the fourth connecting cable are arranged on the other side; the AC220V external power supply circuit breaker switch, the DC110V external power supply circuit breaker switch, the DC110V power supply circuit emergency power-off button, the DC110V pre-charging start button, the AC220V power supply circuit emergency power-off button, the ampere meter, the voltmeter and the resistance change knob are arranged on the front face. According to the utility model, the test process is improved and optimized, the effect of staff reduction and efficiency improvement is achieved, and the pre-charging test of the motor train unit battery is independently completed by one tester.

Description

Technical Field

[0001] The utility model relates to the technical field of motor vehicle groups, in particular to an auxiliary power supply device for pre-charging test of a battery of a motor vehicle group. Background Art

[0002] During the battery pre-charging test of CRH3 series and 400BF series EMUs in the train commissioning phase, or when the EMU needs to disconnect the battery for vehicle maintenance, add or modify the line, or replace the device equipment when a fault occurs, the connection plug between the battery and the charger needs to be removed. After the operation process is completed, the battery pre-charging test must be carried out first, and then the battery plug and the charger are reconnected and tightened. The battery pre-charging test is to prevent the connection between the battery plug and the socket from being burned due to the large voltage difference when the battery is connected, or the fuse in the battery box may be burned, causing damage to the vehicle and affecting the production cycle. The existing pre-charging equipment is too large, bulky and slow to move. It requires at least four people to move and complete the operation. The labor intensity is high and the equipment takes a long time to move. In addition, the existing equipment has a complex structure, poor stability, a single external power supply method, and can only be powered by AC380V of the ground power cabinet. The repair and maintenance costs are high, which increases the cost in the manufacturing process and reduces production efficiency. Utility Model Content

[0003] The utility model aims to solve the technical problems in the prior art of EMU battery pre-charging test process, such as large equipment size, high labor intensity, high equipment maintenance cost, long equipment moving process and low production efficiency, and provides an EMU battery pre-charging test auxiliary power supply device.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] An EMU battery pre-charging test auxiliary power supply device, comprising: an EMU battery pre-charging test auxiliary power supply device and an EMU test vehicle;

[0006] The auxiliary power supply device for EMU battery pre-charging test includes:

[0007] A first connection cable and a second connection cable disposed on one side;

[0008] a third connection cable and a fourth connection cable disposed on the other side; and

[0009] Set on the front are the AC220V external power circuit breaker switch, DC110V external power circuit breaker switch, DC110V power supply circuit emergency power-off button, DC110V pre-charge start button, AC220V power supply circuit emergency power-off button, ammeter, voltmeter, and resistance change knob;

[0010] The first connection cable is connected to the positive electrode of the EMU pre-charging test connection point adapter;

[0011] The second connection cable is connected to the negative pole of the EMU pre-charging test connection point adapter;

[0012] The third connecting cable is connected to the AC220V power connection adapter; the AC220V power connection adapter is connected to an external AC220V power supply to provide working power for the auxiliary power supply device for the EMU battery pre-charging test;

[0013] The fourth connection cable is connected to the DC110V power connection adapter; the DC110V power connection adapter is connected to the DC110 external power supply;

[0014] The auxiliary power supply device for the EMU battery pre-charging test is connected to the EMU test vehicle through the first connecting cable and the second connecting cable and the positive pole of the EMU pre-charging test connection point adapter on the first connecting cable and the negative pole of the EMU pre-charging test connection point adapter on the second connecting cable, respectively, to provide it with a test voltage.

[0015] In the above technical solution, the emergency power-off button of the AC220V power supply circuit is used to emergency disconnect the power supply to stop the auxiliary power supply device for the EMU battery pre-charging test.

[0016] In the above technical solution, the resistance changing knob is a sliding rheostat, which controls the direct current output by the AC / DC rectifier between 0-110V.

[0017] In the above technical solution, the ammeter is used to observe the real-time current size of the circuit, and the voltmeter is used to observe the real-time voltage size of the circuit.

[0018] In the above technical solution, the emergency power-off button of the DC110V power supply circuit is used to urgently disconnect the power supply of the circuit to stop the equipment from working.

[0019] The above technical solution also includes a pre-charging resistor, which is used to limit the current of the circuit.

[0020] In the above technical solution, the pre-charging resistor is 50 ohms.

[0021] The utility model has the following beneficial effects:

[0022] The utility model provides an auxiliary power supply device for the pre-charging test of the EMU battery. The test vehicle can be completely completed by one tester through the device. The existing test method requires at least four testers to operate at the same time, which improves and optimizes the test process and achieves the effect of reducing staff and increasing efficiency.

[0023] The utility model provides an auxiliary power supply device for precharging test of electric train battery, which has a light structure and is quick to move, thus solving the problems of high labor intensity and low production efficiency caused by long moving time in the original operation mode.

[0024] The utility model provides an auxiliary power supply device for pre-charging test of electric train battery, which has a simple structure and meets all test standard requirements and safety requirements; the equipment has a low failure rate, is simple to maintain and has a very low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Figure 1 It is a working system principle block diagram of the auxiliary power supply device for the EMU battery pre-charging test of the utility model;

[0027] Figure 2 This is a block diagram of the composition principle of the auxiliary power supply device for the EMU battery pre-charging test of the utility model;

[0028] Figure 3 The utility model is an electrical principle block diagram of the auxiliary power supply device for the EMU battery pre-charging test.

[0029] The reference numerals in the figures indicate:

[0030] 10- EMU battery pre-charging test auxiliary power supply device;

[0031] 20- EMU test vehicle;

[0032] Q1-AC220V external power circuit breaker switch;

[0033] Q2-DC110V external power circuit breaker switch;

[0034] SB1-DC110V power supply circuit emergency power off button;

[0035] SB2-DC110V pre-charge start button;

[0036] SB3-AC220V power supply circuit emergency power off button;

[0037] A-ammeter;

[0038] V-voltmeter;

[0039] R1-precharge resistor;

[0040] R2-resistance change knob;

[0041] 11- first connecting cable;

[0042] 12- second connecting cable;

[0043] 13- third connecting cable;

[0044] 14- fourth connecting cable;

[0045] 15-AC220V power connection adapter;

[0046] 16-DC110V power connection adapter;

[0047] 17- EMU pre-charging test connection point adapter positive pole;

[0048] 18-EMU pre-charging test connection point adapter negative pole. DETAILED DESCRIPTION

[0049] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.

[0051] like Figure 1-3As shown, the EMU battery pre-charging test auxiliary power supply device of the utility model includes: an AC220V power supply control function circuit and a DC110V power supply control function circuit. The EMU battery pre-charging test auxiliary power supply device 10 is connected to the EMU pre-charging test connection points of the CRH3 series and 400BF series EMU test vehicles 20 through a first connecting cable 11 and a second connecting cable 12, respectively, to provide a test voltage therefor to complete the battery pre-charging function test.

[0052] like Figure 1 As shown, the system application principle of the EMU battery pre-charging test auxiliary power supply device of the utility model mainly includes: an EMU battery pre-charging test auxiliary power supply device 10 and a CRH3 series and 400BF series EMU test vehicle 20. The EMU battery pre-charging test auxiliary power supply device 10 is connected to the EMU test vehicle 20 through the first connecting cable 11 and the second connecting cable 12 and the EMU pre-charging test connection point adapter positive electrode 17 on the first connecting cable 11 and the EMU pre-charging test connection point adapter negative electrode 18 on the second connecting cable 12, respectively, to provide a test voltage for it, and complete the battery pre-charging function test.

[0053] like Figure 2 As shown, the EMU battery pre-charging test auxiliary power supply device 10 comprises: a first connecting cable 11, a second connecting cable 12, a third connecting cable 13, a fourth connecting cable 14, an AC220V power connection adapter 15, a DC110V power connection adapter 16, an EMU pre-charging test connection point adapter positive pole 17, an EMU pre-charging test connection point adapter negative pole 18, an AC220V external power circuit breaker switch Q1, a DC110V external power circuit breaker switch Q2, a DC110V power supply circuit emergency power-off button SB1, a DC110V pre-charging start button SB2, an AC220V power supply circuit emergency power-off button SB3, an ammeter A, a voltmeter V, and a resistance change knob R2.

[0054] like Figure 3 As shown, the electrical control principle of the EMU battery pre-charging test auxiliary power supply device 10 is divided into two parts:

[0055] The functions of the first part are as follows: the AC220V power connection adapter 15 is connected to an external AC220V power supply to provide working power for the EMU battery pre-charging test auxiliary power supply device 10; the AC220V external power supply circuit breaker switch Q1 is closed, and the 220V alternating current passes through the AC220V power supply circuit emergency power-off button SB3. The function of the AC220V power supply circuit emergency power-off button SB3 is to disconnect the power supply in an emergency, so that the EMU battery pre-charging test auxiliary power supply device 10 stops working; the AC / DC rectifier converts the AC220V alternating current into DC110V direct current, and the power supply is turned off by the AC / DC rectifier. The resistance changing knob R2 is a sliding rheostat, which can control the DC power output by the AC / DC rectifier between 0-110V; the ammeter A can observe the real-time current size of the circuit, and the voltmeter V can observe the real-time voltage size of the circuit; the DC voltage in the circuit is connected to the EMU test vehicle 20 through the first connecting cable 11 and the second connecting cable 12 and the positive pole 17 of the EMU pre-charging test connection point adapter on the first connecting cable 11 and the negative pole 18 of the EMU pre-charging test connection point adapter on the second connecting cable 12, respectively, to provide it with a test voltage and complete the battery pre-charging function test.

[0056] Note: The first part of the function is applicable to all CRH3 series and 400BF series EMU test vehicles, without any restrictions, and only requires a normal external 220V AC power supply.

[0057] The functions of the second part are as follows: the DC110V power connection adapter 16 is connected to the DC110 external power supply, which is provided by the battery itself. The EMUs are all equipped with two groups of batteries, and different groups of batteries can be used crosswise as external power supplies. The DC110V power connection adapter 16 is connected to the plug adapter matching the battery output terminal of the EMU itself (the plug adapter model matching the battery output terminal of the CRH3 series and 400BF series EMU test vehicles 20 is unified and universal), and the DC110V external power supply circuit breaker switch Q2 is closed. The DC110V power supply circuit emergency power-off button SB1 can urgently disconnect the power supply of the circuit to stop the equipment from working; after the DC110V pre-charging start button SB2 is pressed, the functional relay K1 is energized and closed, and its normally open The contacts are closed, so that the functional relay K1 circuit is self-locked and energized, and the other pair of normally open contacts are closed to provide working power for the circuit. The pre-charging resistor R1 can limit the current for the circuit. According to the capacitor parameters provided by the CRH3 series and 400BF series EMU manufacturers, the pre-charging resistor R1 in the circuit is selected to be 50 ohms, 300 model. The ammeter A can observe the real-time current size of the circuit, and the voltmeter V can observe the real-time voltage size of the circuit. The DC voltage in the circuit is connected to the EMU test vehicle 20 through the first connecting cable 11 and the second connecting cable 12 and the EMU pre-charging test connection point adapter positive pole 17 on the first connecting cable 11 and the EMU pre-charging test connection point adapter negative pole 18 on the second connecting cable 12, respectively, to provide it with a test voltage to complete the battery pre-charging function test.

[0058] Note: The second part of the function is applicable to all CRH3 series and 400BF series EMU test vehicles. However, the battery of the EMU test vehicle itself needs to be charged (the battery level cannot be too low) because the external DC 110V power supply is the output of the battery itself.

[0059] Specific method:

[0060] The first method: when AC220V external power supply is used;

[0061] Connect the AC220V power connection adapter 15 to an external AC220V power supply to provide working power for the EMU battery pre-charging test auxiliary power supply device 10, close the AC220V external power supply circuit breaker switch Q1, and use the resistance change knob R2 to adjust the DC 110V rectified by the AC / DC rectifier to a minimum of 0V in conjunction with the voltmeter V, and then connect to the EMU test vehicle 20 through the first connecting cable 11 and the second connecting cable 12 and the EMU pre-charging test connection point adapter positive electrode 17 on the first connecting cable 11 and the EMU pre-charging test connection point adapter negative electrode 18 on the second connecting cable 12. After reliable connection, use the resistance change knob R2 to change the DC voltage to perform a battery pre-charging test on the EMU test vehicle 20.

[0062] The second method: when the battery of the EMU test vehicle 20 itself is in a charged state (the battery level cannot be too low);

[0063] Connect the DC110V power connection adapter 16 to the first battery of the EMU test vehicle 20 (there are two groups of batteries, divided into the first battery and the second battery), perform a pre-charging test on the second battery, close the DC110V external power circuit breaker switch Q2, press the DC110V pre-charging start button SB2 to start the circuit, observe the circuit ammeter A, and the current set by the circuit should be around 2A. After confirming that the current meets the test requirements, press the DC110V power supply circuit emergency power-off button SB1 to disconnect the power supply, and then connect to the EMU test vehicle 20 through the first connecting cable 11 and the second connecting cable 12 and the EMU pre-charging test connection point adapter positive pole 17 on the first connecting cable 11 and the EMU pre-charging test connection point adapter negative pole 18 on the second connecting cable 12. After reliable connection, press the DC110V pre-charging start button SB2 to start the circuit and perform a battery pre-charging test on the EMU test vehicle 20.

[0064] The pre-charging test method of the first storage battery is the same as that described above and will not be described again here.

[0065] The utility model provides an auxiliary power supply device for the pre-charging test of the EMU battery. The test vehicle can be completely completed by one tester through the device. The existing test method requires at least four testers to operate at the same time, which improves and optimizes the test process and achieves the effect of reducing staff and increasing efficiency.

[0066] The utility model provides an auxiliary power supply device for precharging test of electric train battery, which has a light structure and is quick to move, thus solving the problems of high labor intensity and low production efficiency caused by long moving time in the original operation mode.

[0067] The utility model provides an auxiliary power supply device for pre-charging test of electric train battery, which has a simple structure and meets all test standard requirements and safety requirements; the equipment has a low failure rate, is simple to maintain and has a very low maintenance cost.

[0068] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An auxiliary power supply device for pre-charging test of EMU battery, characterized in that: include: EMU battery pre-charging test auxiliary power supply device (10) and EMU test vehicle (20); The auxiliary power supply device (10) for the pre-charging test of the electric train battery comprises: A first connecting cable (11) and a second connecting cable (12) arranged on one side; a third connecting cable (13) and a fourth connecting cable (14) arranged on the other side; and The AC220V external power circuit breaker switch (Q1), the DC110V external power circuit breaker switch (Q2), the DC110V power supply circuit emergency power-off button (SB1), the DC110V pre-charge start button (SB2), the AC220V power supply circuit emergency power-off button (SB3), the ammeter (A), the voltmeter (V), and the resistance variation knob (R2) are arranged on the front; The first connecting cable (11) is connected to the positive electrode (17) of the EMU pre-charging test connection point adapter; The second connecting cable (12) is connected to the negative pole (18) of the EMU pre-charging test connection point adapter; The third connecting cable (13) is connected to the AC220V power connection adapter (15); the AC220V power connection adapter (15) is connected to an external AC220V power supply to provide working power for the EMU battery pre-charging test auxiliary power supply device (10); The fourth connecting cable (14) is connected to the DC110V power connection adapter (16); the DC110V power connection adapter (16) is connected to the DC110 external power supply; The EMU battery pre-charging test auxiliary power supply device (10) is connected to the EMU test vehicle (20) through the first connecting cable (11) and the second connecting cable (12) and the EMU pre-charging test connection point adapter positive electrode (17) on the first connecting cable (11) and the EMU pre-charging test connection point adapter negative electrode (18) on the second connecting cable (12), respectively, to provide a test voltage for it.

2. The auxiliary power supply device for pre-charging test of EMU battery according to claim 1 is characterized in that: The AC220V power supply circuit emergency power off button (SB3) is used to disconnect the power supply in an emergency, so that the EMU battery pre-charging test auxiliary power supply device (10) stops working.

3. The auxiliary power supply device for pre-charging test of EMU battery according to claim 1 is characterized in that: The resistance variable knob (R2) is a sliding resistor that controls the DC power output by the AC / DC rectifier between 0-110V.

4. The auxiliary power supply device for pre-charging test of EMU battery according to claim 1, characterized in that: The ammeter (A) is used to observe the real-time current size of the circuit, and the voltmeter (V) is used to observe the real-time voltage size of the circuit.

5. The auxiliary power supply device for pre-charging test of EMU battery according to claim 1, characterized in that: The DC110V power supply circuit emergency power-off button (SB1) is used to urgently disconnect the power supply of the circuit to stop the equipment from working.

6. The auxiliary power supply device for pre-charging test of EMU battery according to claim 1, characterized in that: A pre-charge resistor (R1) is also included, which is used to limit the current of the circuit.

7. The auxiliary power supply device for pre-charging test of EMU battery according to claim 6, characterized in that: The pre-charge resistor (R1) is 50 ohms.

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