Device for detecting internal short circuit of connector of voltage inspection device

Abstract

The utility model relates to the technical field of fuel cell voltage inspection devices, and specifically provides an internal short circuit detection device of a voltage inspection device connector. The internal short circuit detection device comprises an incoming material wire harness connector male head, a wire harness detection tool female head matched with the incoming material wire harness connector male head, and a detection array, wherein the wire harness detection tool female head is provided with a plurality of pin joints associated with an internal circuit; the detection array comprises a plurality of short-circuit detection circuits, and each short-circuit detection circuit is connected with the corresponding pin connector. In this way, the wire harness detection tool female head can be connected with the incoming wire harness connector male head, and then the short circuit detection circuit and the corresponding contact pin connector are connected, so that whether the internal circuits of the incoming wire harness connector male head and the wire harness detection tool female head are short-circuited or not can be detected through the short circuit detection circuit; therefore, the problems in the prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell voltage detector technology, specifically to a short-circuit detection device for the connector of a voltage detector. Background Technology

[0002] Because fuel cell stacks are typically composed of a large number (usually more than 100) of individual cells connected in series or parallel, a failure in one or more individual cells can easily lead to a failure of the entire stack. Therefore, it is often necessary to inspect and diagnose the individual cells in the stack. Currently, voltage monitors (CVMs) are commonly used for inspecting individual cells. Specifically, a voltage monitor has multiple detection units corresponding to each individual cell in the stack. These detection units accurately detect the voltage of each individual cell in the stack in real time, and based on the detected voltage, it can quickly perform condition analysis and fault diagnosis. Therefore, voltage monitors are widely used in fuel cell stack condition monitoring and diagnosis.

[0003] In practical applications, connectors are typically used to connect voltage detectors to fuel cell stacks. These connectors consist of a housing and internal circuitry. The internal circuitry conducts the voltage of each individual cell in the stack to the corresponding detection unit in the voltage detector. Therefore, ensuring that the connector's internal circuitry is free from short-circuit faults is crucial. However, because the connector's internal short circuit is surrounded by a housing, and because the connector's internal circuitry needs to interface with multiple individual cells, its internal circuitry structure is complex, making it currently difficult to detect short-circuit faults within its internal circuitry. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a short circuit detection device for the internal circuit of a voltage detector connector, which aims to solve, to a certain extent, the problem that it is difficult to detect short circuit faults in the internal circuit of the connector in related technologies.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This application provides a voltage detector connector internal short-circuit detection device, including an incoming wire harness connector male connector, a wire harness detection fixture female connector adapted to the incoming wire harness connector male connector, and a detection array, wherein:

[0007] The female connector of the wire harness testing tool is equipped with multiple pin connectors associated with internal circuits;

[0008] The detection array includes multiple short-circuit detection circuits, each of which is connected to a corresponding pin connector.

[0009] Preferably, the short-circuit detection circuit includes: an indicator light and an indicator light protection resistor connected in series with the indicator light.

[0010] Preferably, the short-circuit detection circuit further includes a sampling resistor, wherein the sampling resistor is connected in parallel with the indicator light and the indicator light protection resistor.

[0011] Preferably, the short-circuit detection circuit in the detection array includes 33 short-circuit detection circuits; and,

[0012] The 33 short-circuit detection circuits correspond to the pin connector arrangement in the female connector of the wire harness detection fixture, which is arranged in 3 rows and 11 columns.

[0013] Preferably, the pin connector is an L-shaped pin connector.

[0014] Preferably, each short-circuit detection circuit is connected to its corresponding pin connector via a pin.

[0015] Preferably, the detection circuit is provided with a pin connector; and,

[0016] Each short-circuit detection circuit is connected to its corresponding pin connector via a pin connector interface.

[0017] Based on the above technical solution, the advantages of this utility model compared with the prior art are as follows:

[0018] The voltage inspector connector internal short-circuit detection device provided in this application includes an incoming wire harness connector male, a wire harness detection fixture female adapted to the incoming wire harness connector male, and a detection array. The wire harness detection fixture female has multiple pin connectors associated with internal circuits. The detection array includes multiple short-circuit detection circuits, each connected to a corresponding pin connector. Because the pin connectors are associated with the internal circuits of the wire harness detection fixture female, and the wire harness detection fixture female is compatible with the incoming wire harness connector male, the wire harness detection fixture female can be connected to the incoming wire harness connector male, thereby connecting the short-circuit detection circuits and their corresponding pin connectors. This allows the short-circuit detection circuits to detect whether a short circuit exists in the internal circuits of the incoming wire harness connector male and the wire harness detection fixture female, thus solving the problems in the prior art. Attached Figure Description

[0019] Figure 1 The schematic diagram provided in this application shows the specific structure of the male connector of the incoming wire harness connector and the female connector of the wire harness testing fixture in the internal short-circuit detection device of the voltage inspector connector.

[0020] Figure 2This is a schematic diagram of the specific structure of the wire harness testing fixture female head in the internal short-circuit detection device of the voltage inspector connector provided in this application.

[0021] Figure 3 This is a schematic diagram of the specific structure of the detection array in the internal short-circuit detection device of the voltage inspector connector provided in this application.

[0022] Figure 4 The diagram provided in this application shows the specific structure of the short-circuit detection circuit in the detection array.

[0023] Figure 5 The diagram provided in this application shows the specific structure of the connection between the wire harness detection tool female head and the short circuit detection circuit in the internal short circuit detection device of the voltage inspector connector.

[0024] In the above diagram: 1-Male connector for incoming wire harness; 2-Female connector for wire harness testing fixture; 3-Detection array; 4-Pin; 11-Connector; 21-Pin connector; 22-Connector interface; 31-Short circuit detection circuit; 311-Indicator light; 312-Indicator light protection resistor; 313-Sampling resistor. Detailed Implementation

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] As mentioned earlier, voltage detectors are typically connected to fuel cell stacks using connectors. These connectors consist of a housing and internal circuitry. The internal circuitry conducts the voltage of each individual cell in the stack to the corresponding detection unit in the voltage detector. Therefore, ensuring that the connector's internal circuitry is free from short-circuit faults is crucial. However, because the connector's internal short circuit is surrounded by a housing, and because the connector's internal circuitry needs to interface with multiple individual cells, the internal circuitry structure is complex, making it currently difficult to detect short-circuit faults within the connector's internal circuitry.

[0029] In view of this, embodiments of this application provide an internal short-circuit detection device for a voltage detector connector, which can be used to solve the problems in the prior art and can be combined with the present application. Figures 1-5 As shown, the structure of the internal short circuit detection device will be specifically described. The internal short circuit detection device may include a male connector 1 for incoming wire harness connectors, a female wire harness detection fixture 2 adapted to the male connector 1 for incoming wire harness connectors, and a detection array 3.

[0030] The male connector 1 of the incoming wire harness connector can be connected to the fuel cell stack, and the female connector 2 of the wire harness detection fixture can be connected to the voltage detector. Thus, the voltage detector can detect the voltage of the fuel cell stack through the connection between the female connector 2 of the wire harness detection fixture and the male connector 1 of the incoming wire harness connector.

[0031] Of course, in order to enable the wire harness testing fixture female head 2 to connect with the incoming wire harness connector male head 1, the wire harness testing fixture female head 2 is provided with a plug interface 22, and the incoming wire harness connector male head 1 is provided with a plug connector 11 corresponding to the plug interface. Thus, the connection between the two can be achieved by plugging the plug connector 11 in the incoming wire harness connector male head 1 into the plug interface 22 of the wire harness testing fixture female head 2.

[0032] It is important to note that the wire harness testing fixture female head 2 is equipped with multiple pin connectors 21 that are associated with the internal circuit. One end of each pin connector 21 is connected to the internal circuit, and the other end extends out of the outer shell of the wire harness testing fixture female head 2. In order to reduce the volume ratio, the pin connector 21 can be specifically an L-shaped pin connector.

[0033] The detection array 3 includes multiple short-circuit detection circuits 31, and each short-circuit detection circuit 31 is connected to a corresponding pin connector 21. Specifically, each short-circuit detection circuit 31 can be connected to its corresponding pin connector 21 via a pin 4. Since the pin connector 21 is associated with the internal circuit of the wire harness detection fixture female connector 2, and the wire harness detection fixture female connector 2 is compatible with the incoming wire harness connector male connector 1, the wire harness detection fixture female connector 2 can be connected to the incoming wire harness connector male connector 1. Furthermore, the pin 4 connects the short-circuit detection circuit 31 to its corresponding pin connector 21, thereby detecting whether there is a short circuit in the internal circuits of the incoming wire harness connector male connector 1 and the wire harness detection fixture female connector 2. This solves the problems in the prior art.

[0034] Of course, considering that it is not convenient to operate when connecting through pin 4, the way to connect each short circuit detection circuit 31 to the corresponding pin connector 21 can also be to set the corresponding pin interface on the detection circuit 31, and then connect each short circuit detection circuit 31 to the corresponding pin connector 21 by inserting the pin connector 21 into the pin interface.

[0035] In practical applications, the short-circuit detection circuit 31 may include an indicator light 311 and an indicator light protection resistor 312 connected in series with the indicator light 311. The indicator light 311 may specifically be an LED light. In this application, the indicator light protection resistor 312 is connected in series with the indicator light 311 to prevent the current of the indicator light 311 from being too large, thereby protecting it.

[0036] Of course, in addition to the indicator light 311 and the indicator light protection resistor 312 mentioned above, the short circuit detection circuit 31 may also include a sampling resistor 313. The sampling resistor 313 is connected in parallel with the indicator light 311 and the indicator light protection resistor 312, so that the safety status of the circuit can be monitored by monitoring the voltage across the sampling resistor 313. For example, when the voltage across the sampling resistor 313 increases sharply, it indicates that the circuit is in an unsafe state. At this time, it is necessary to disconnect the connection between the short circuit detection circuit 31 and the corresponding pin connector 21.

[0037] It should be further explained that, since each short-circuit detection circuit 31 in the detection array 3 of this application is connected to the corresponding pin connector 21 through the pin 4, the arrangement of the multiple pin connectors 21 on the wire harness detection fixture female head 2 must correspond to the arrangement of each short-circuit detection circuit 31 in the detection array 3. For example, the wire harness detection fixture female head 2 includes 66 pin connectors 21, of which two pin connectors 21 can be used as a group to connect the two ends of the corresponding short-circuit detection circuit 31. Considering the internal circuit structure of the wire harness detection fixture female head 2, the 66 pin connectors 21 can be arranged in 3 rows and 22 columns. Two adjacent pin connectors 21 in the same row are used as a group (33 groups in total) to connect the corresponding short-circuit detection circuit 31. Correspondingly, the short circuit detection circuit 31 in the detection array 3 includes 33 short circuit detection circuits 31, and these 33 short circuit detection circuits 31 correspond to the arrangement of the pin connectors 21 in the wire harness detection tool female head 2, arranged in 3 rows and 11 columns, so that they are connected to the corresponding pin connectors 21 through the pins 4 respectively.

[0038] Thus, with the internal short-circuit detection device provided in this application embodiment, if there is no short circuit in the internal circuit, there is voltage across the sampling resistor 313 and the indicator light 311 can light up; conversely, if there is a short circuit in the internal circuit, the voltage across the corresponding sampling resistor 313 will be 0 due to the short circuit, and the indicator light 311 will not light up. Therefore, short circuit detection of the internal circuit can be performed in this way.

[0039] This utility model is not limited to the above-described embodiments. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model. Contents not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. A short-circuit detection device for an internal connector of a voltage detector, characterized in that, Includes a male connector for incoming wire harnesses (1), a female wire harness inspection fixture (2) adapted to the male connector for incoming wire harnesses (1), and an inspection array (3), wherein: The wire harness testing tool female head (2) is provided with multiple pin connectors (21) associated with the internal circuit. The detection array (3) includes multiple short-circuit detection circuits (31), wherein each short-circuit detection circuit (31) is connected to a corresponding pin connector (21).

2. The apparatus according to claim 1, characterized in that, The short-circuit detection circuit (31) includes: an indicator lamp (311) and an indicator lamp protection resistor (312) connected in series with the indicator lamp (311).

3. The apparatus according to claim 2, characterized in that, The short-circuit detection circuit (31) further includes a sampling resistor (313), wherein the sampling resistor (313) is connected in parallel with the indicator lamp (311) and the indicator lamp protection resistor (312).

4. The apparatus according to claim 2, characterized in that, The short-circuit detection circuit (31) in the detection array (3) includes 33 short-circuit detection circuits (31); and, The 33 short-circuit detection circuits (31) correspond to the pin connectors (21) in the wire harness detection tooling female head (2) and are arranged in 3 rows and 11 columns.

5. The apparatus according to claim 1, characterized in that, The pin connector (21) is specifically an L-shaped pin connector.

6. The apparatus according to claim 1, characterized in that, Each short-circuit detection circuit (31) is connected to the corresponding pin connector (21) via a pin (4).

7. The apparatus according to claim 1, characterized in that, The detection circuit (31) is provided with a pin connector; and, Each short-circuit detection circuit (31) is connected to the corresponding pin connector (21) through a pin connector interface.

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