An auxiliary power module test device circuit

Abstract

The utility model belongs to the technical field of test device circuit, specifically relates to a kind of auxiliary power module test device circuit, the positive output of 24V DC power supply is electrically connected with the coil of first intermediate relay by change-over switch, the coil of first intermediate relay is electrically connected in the negative output of 24V DC power supply, the positive output of 24V DC power supply is electrically connected with the first normally open contact of first intermediate relay, the first normally open contact of first intermediate relay is electrically connected with first indicating lamp, first indicating lamp is electrically connected in the negative output of 24V DC power supply.The utility model has carried out test and application to auxiliary power module for railway locomotive / motor car, solved the problem of domestic locomotive motor car auxiliary power module production test, with simple circuit, low cost, meet the need of safe and reliable, by adjusting the definition and quantity of external connection wire harness, the test needs of different auxiliary power module can be satisfied.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test device circuit technical field, concretely relates to a kind of auxiliary power module test device circuit. BACKGROUND

[0002] Auxiliary power module test device is a kind of testing device about power module for locomotive or motor car, can send out single pulse or double pulse signal with amplitude of 15VDC, the control end waveform of IGBT is detected to preliminarily judge the fault of power module;The main feature of the device is not configured high voltage circuit, does not cause damage to power module. With the extensive application of locomotive and motor car in domestic market, many units in China carry out a large number of research experiments on power module testing technology, but in the industrialization of product and reliability operation, far cannot adapt to the demand of market portable test. CONTENT OF UTILITY MODEL

[0003] In view of the above-mentioned technical problem that the existing auxiliary power module test device cannot adapt to the demand of market portable test in the industrialization of product and reliability operation, the utility model provides an auxiliary power module test device circuit, improves the overall test success rate of auxiliary power module circuit, reduces labor cost, and can realize batch production test of auxiliary power module.

[0004] In order to solve the above technical problem, the utility model adopts the technical scheme that:

[0005] An auxiliary power module test device circuit, including control device, first intermediate relay, first indicating lamp, second indicating lamp, 24V DC power supply, change-over switch, the positive output end of 24V DC power supply is electrically connected with the coil of first intermediate relay through change-over switch, the coil of first intermediate relay is electrically connected in the negative output of 24V DC power supply, the positive output end of 24V DC power supply is electrically connected with the first normally open contact of first intermediate relay, the first normally open contact of first intermediate relay is electrically connected with first indicating lamp, first indicating lamp is electrically connected in the negative output of 24V DC power supply, the positive output end of 24V DC power supply is electrically connected with the normally closed contact of first intermediate relay, the normally closed contact of first intermediate relay is electrically connected with second indicating lamp, second indicating lamp is electrically connected in the negative output of 24V DC power supply, control device is connected in parallel between the positive output end and the negative output end of 24V DC power supply.

[0006] The control device includes first input pin, second input pin, first output pin and second output pin, the first input pin is electrically connected on the positive output end of 24V DC power supply through the second normally open contact of first intermediate relay, the second input pin is electrically connected on the positive output end of 24V DC power supply through self-resetting button.

[0007] The first output pin is electrically connected with a positive pulse generator, and the second output pin is electrically connected with a negative pulse generator.

[0008] The change-over switch comprises a control device power supply, an auxiliary module feedback power supply, a double-path adjustable power supply and a second intermediate relay, the control device power supply is electrically connected between the positive output end of the 24V DC power supply and the coil of the first intermediate relay, the auxiliary module feedback power supply is connected in parallel with the control device power supply, and the double-path adjustable power supply is connected in parallel with the auxiliary module feedback power supply.

[0009] One end of the double-path adjustable power supply is electrically connected with a rotary switch, the rotary switch is electrically connected with the coil of the second intermediate relay, and the coil of the second intermediate relay is electrically connected with the other end of the double-path adjustable power supply.

[0010] The first normally-open contact of the second intermediate relay is connected at both ends to a positive pulse, the second normally-open contact of the second intermediate relay is connected at both ends to a negative pulse, the first normally-open contact of the second intermediate relay is connected in parallel between one end of the second normally-open contact of the second intermediate relay and the first normally-closed contact of the second intermediate relay, and the second normally-open contact of the second intermediate relay is connected in parallel between the other end of the first normally-open contact of the second intermediate relay and the second normally-closed contact of the second intermediate relay.

[0011] Compared with the prior art, the utility model has the beneficial effect that:

[0012] The utility model discloses a test and application of the auxiliary power module for railway locomotive / motor train, solves the problem of domestic locomotive / motor train auxiliary power module production test, realizes simple circuit, low cost, satisfies the need of safe and reliable, through the definition and quantity of adjusting external connection wire harness, can satisfy the factory test need of different auxiliary power module. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained from the provided drawings without creative labor.

[0014] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantial significance, and any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0015] Figure 1 The circuit diagram of the utility model;

[0016] Figure 2 The circuit diagram of the utility model change-over switch.

[0017] Among them: U is a control device, KA61 is a first intermediate relay, 1HD is a first indicator lamp, 2HD is a second indicator lamp, 24V DC power supply is a 24V DC power supply, K61 is a change-over switch, IN4 is a first input pin, IN7 is a second input pin, U is a first output pin, U is a second output pin, DY4 is a control device power supply, DY5 is an auxiliary module feedback power supply, DY6 is a double-way adjustable power supply, KAJ is a second intermediate relay. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. These descriptions are only for further illustrating the features and advantages of the utility model, not for limiting the claims of the utility model. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application.

[0019] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0020] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the application, unless otherwise specified, the meaning of "multiple" is two or more.

[0021] In the description of the present application, it is necessary to point out that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] An auxiliary power module test device circuit, as shown in Figure 1 The control device U, the first intermediate relay KA61, the first indicator lamp 1HD, the second indicator lamp 2HD, the 24V DC power supply DC24V, and the change-over switch K61 are provided. The positive output terminal of the 24V DC power supply is electrically connected to the coil of the first intermediate relay KA61 through the change-over switch K61, and the negative terminal of the coil is connected to the negative output terminal of the 24V DC power supply. In this way, when the change-over switch K61 is closed, the coil of KA61 is energized to generate an electromagnetic force to make the relay KA61 be attracted. After the coil of KA61 is energized, its first normally open contact is closed. One end of this contact is connected to the positive output terminal of the 24V DC power supply, and the other end is connected to the first indicator lamp 1HD, so that when KA61 is attracted, the first indicator lamp 1HD will be lit. After the coil of KA61 is energized, its normally closed contact is opened. One end of this contact is connected to the positive output terminal of the 24V DC power supply, and the other end is connected to the second indicator lamp 2HD, so that when KA61 is opened, the second indicator lamp 2HD will be lit. The coil of KA61 is connected in parallel with the control device U, and the control device U works in parallel with the coil of KA61 to provide additional control signals or protection functions.

[0023] Further, the control device U includes a first input pin IN4, a second input pin IN7, a first output pin Uup and a second output pin Udown. The first input pin IN4 is electrically connected to the positive output terminal of the 24V DC power supply DC24V through the second normally open contact of the first intermediate relay KA61. When the coil of KA61 is energized, its normally open contact is closed, thereby connecting IN4 with the positive terminal of the DC24V power supply. The second input pin IN7 is electrically connected to the positive output terminal of the 24V DC power supply DC24V through the self-resetting button K54. This means that when the button K54 is pressed, IN7 is connected with the positive terminal of the DC24V power supply, and when it is released, it is disconnected. The first output pin Uup is electrically connected to the positive pulse generator +MC. The output signal of Uup will drive the positive pulse generator to generate a corresponding positive pulse signal. The second output pin Udown is electrically connected to the negative pulse generator -MC. The output signal of Udown will drive the negative pulse generator to generate a corresponding negative pulse signal.

[0024] Further, as shown inFigure 2 As shown, the change-over switch K61 includes a control device power supply DY4, an auxiliary module feedback power supply DY5, a two-way adjustable power supply DY6, and a second intermediate relay KAJ. The control device power supply DY4 is electrically connected between the positive output terminal of the 24V DC power supply DC24V and the coil of the first intermediate relay KA61. When the 24V DC power supply DC24V is turned on, DY4 supplies power to the coil of KA61, thereby controlling the operation of KA61. The auxiliary module feedback power supply DY5 is connected in parallel with the control device power supply DY4. This means that DY5 and DY4 simultaneously obtain power from the same power supply, and there is no direct electrical connection between them, but they share the same power supply. One end of the two-way adjustable power supply DY6 is electrically connected to a rotary switch K, which is electrically connected to the coil of the second intermediate relay KAJ. The other end of the two-way adjustable power supply DY6 is electrically connected to the coil of the second intermediate relay KAJ. When the rotary switch K is closed, the coil of KAJ is powered, and KAJ is attracted, thereby controlling the state of the subsequent circuit. The first normally open contact of the second intermediate relay KAJ is connected across the positive pulse MCH, and the second normally open contact of the second intermediate relay KAJ is connected across the negative pulse MCL. The two normally open contacts of KAJ control the transmission of positive and negative pulse signals, respectively. The first normally closed contact of the second intermediate relay KAJ is connected in parallel between one end of the first normally open contact of the second intermediate relay KAJ and the other end of the second normally open contact of the second intermediate relay KAJ. The second normally closed contact of the second intermediate relay KAJ is connected in parallel between the other end of the first normally open contact of the second intermediate relay KAJ and one end of the second normally open contact of the second intermediate relay KAJ. This parallel structure causes the normally closed contact of KAJ to be open when KAJ is attracted, thereby affecting the state of the subsequent circuit.

[0025] The working process of the utility model is: the control device is provided with 24VDC power supply through power supply DY4; the auxiliary power module feedback is provided with 15VDC power supply through auxiliary module feedback power supply DY5; the auxiliary power module is provided with 24VDC power supply and the charging module is provided with 15VDC power supply through double-way adjustable power supply DY6; the first intermediate relay KA61 is controlled through the change-over switch K61, so that the control device U outputs double pulse when in the auxiliary inverter gear and outputs single pulse when in the charging module gear. The second intermediate relay KAJ is actuated by closing the rotary switch K, so that the forward pulse MCH is reversed; the first intermediate relay KA61 is actuated (DC24V) by closing the change-over switch K61 to the auxiliary inverter position, and the self-resetting button K54 is closed, so that the control device U outputs the forward pulse MCH and the negative pulse MCL as double pulse signals; at the same time, the first indicating lamp 1HD is lighted; the change-over switch K61 is closed to the charging module position, and the self-resetting button K54 is closed, so that the control device U outputs the forward pulse MCH and the negative pulse MCL as single pulse signals; at the same time, the second indicating lamp 2HD is lighted. The control end of the IGBT is measured by the oscilloscope, and the output waveform is obtained.

[0026] The above only details the preferred embodiments of the utility model, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the utility model, and all the changes shall be included in the protection scope of the utility model.

Claims

1. An auxiliary power module test device circuit, characterized by: The control device (U), the first intermediate relay (KA61), the first indicator light (1HD), the second indicator light (2HD), the 24V DC power supply (DC24V), the change-over switch (K61), the positive output end of the 24V DC power supply (DC24V) is electrically connected with the coil of the first intermediate relay (KA61) through the change-over switch (K61), the coil of the first intermediate relay (KA61) is electrically connected at the negative output of the 24V DC power supply (DC24V), the positive output end of the 24V DC power supply (DC24V) is electrically connected with the first normally open contact of the first intermediate relay (KA61), the first normally open contact of the first intermediate relay (KA61) is electrically connected with the first indicator light (1HD), the first indicator light (1HD) is electrically connected at the negative output of the 24V DC power supply (DC24V), the positive output end of the 24V DC power supply (DC24V) is electrically connected with the normally closed contact of the first intermediate relay (KA61), the normally closed contact of the first intermediate relay (KA61) is electrically connected with the second indicator light (2HD), the second indicator light (2HD) is electrically connected at the negative output of the 24V DC power supply (DC24V), and the control device (U) is connected in parallel between the positive output end and the negative output end of the 24V DC power supply (DC24V).

2. An auxiliary power module test device circuit according to claim 1, wherein: The control device (U) includes a first input pin (IN4), a second input pin (IN7), a first output pin (Uup) and a second output pin (Udown), the first input pin (IN4) is electrically connected on the positive output end of the 24V DC power supply (DC24V) through the second normally open contact of the first intermediate relay (KA61), and the second input pin (IN7) is electrically connected on the positive output end of the 24V DC power supply (DC24V) through the self-resetting button (K54).

3. An auxiliary power module test device circuit according to claim 2, wherein: The first output pin (Uup) is electrically connected with a positive pulse generator (+MC), and the second output pin (Udown) is electrically connected with a negative pulse generator (-MC).

4. The circuit for testing an auxiliary power module according to claim 1, wherein: The change-over switch (K61) includes a control device power supply (DY4), an auxiliary module feedback power supply (DY5), a double-path adjustable power supply (DY6) and a second intermediate relay (KAJ), the control device power supply (DY4) is electrically connected between the positive output end of the 24V DC power supply (DC24V) and the coil of the first intermediate relay (KA61), the auxiliary module feedback power supply (DY5) is connected in parallel with the control device power supply (DY4), and the double-path adjustable power supply (DY6) is connected in parallel with the auxiliary module feedback power supply (DY5).

5. An auxiliary power module test device circuit according to claim 4, wherein: One end of the double-path adjustable power supply (DY6) is electrically connected with a rotary switch (K), the rotary switch (K) is electrically connected with the coil of the second intermediate relay (KAJ), and the coil of the second intermediate relay (KAJ) is electrically connected with the other end of the double-path adjustable power supply (DY6).

6. An auxiliary power module test device circuit according to claim 4, wherein: The first normally open contact of the second intermediate relay (KAJ) is connected across the positive pulse (MCH), the second normally open contact of the second intermediate relay (KAJ) is connected across the negative pulse (MCL), and the first normally closed contact of the second intermediate relay (KAJ) is connected in parallel between one end of the first normally open contact of the second intermediate relay (KAJ) and the other end of the second normally open contact of the second intermediate relay (KAJ), and the second normally closed contact of the second intermediate relay (KAJ) is connected in parallel between the other end of the first normally open contact of the second intermediate relay (KAJ) and one end of the second normally open contact of the second intermediate relay (KAJ).

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