CN211826425U - A fuel cell hydrogen concentration detector performance testing device - Google Patents

Abstract

The utility model provides a performance testing device for a hydrogen concentration detector of a fuel cell, which comprises an explosion-proof casing; the left and right ends of the explosion-proof casing are provided with connection plug-ins, and the connection plug-ins include a signal wire terminal, a power wire terminal and a ground wire terminal; two The same terminals of the connection plug-in are connected to corresponding wires in the explosion-proof casing; the lower surface of the explosion-proof casing is provided with a resin perspective window, and the upper surface of the explosion-proof casing is embedded with a delay switch and a button switch. The utility model relates to a performance testing device for a hydrogen concentration detector of a fuel cell, which can realize rapid performance testing of the hydrogen concentration detector, and has the function of timing automatic reset, so as to prevent the hydrogen concentration detector being tested due to an excessively long short-circuit time. and related connected equipment will cause unnecessary damage.

Description

A fuel cell hydrogen concentration detector performance testing device

technical field

The utility model belongs to the field of hydrogen concentration detector testing, in particular to a performance testing device for a fuel cell hydrogen concentration detector.

Background technique

Under the existing technical conditions, according to the test requirements in GB/T 26990-2011 "Technical Conditions for Fuel Cell Electric Vehicle On-board Hydrogen System", it is stipulated that when the hydrogen leakage detector has a short circuit, open circuit and other faults, it should be able to send a message to the driver. Fault alarm signal. The hydrogen safety issue of fuel cell electric vehicles has always been a highly valued issue in the industry. Generally, the strategic principles and means adopted for hydrogen safety are timely detection, effective processing, and enhanced security. Among them, timely detection is the first and most important step. As a key component of the hydrogen concentration sensor, the sensor must be absolutely checked during the safety inspection of the vehicle to ensure that it can function normally on the vehicle. The existing testing devices and methods related to the hydrogen concentration sensor cannot perform the open circuit and short circuit fault tests according to the standard on the hydrogen concentration sensor without interfering with other operating states of the vehicle.

SUMMARY OF THE INVENTION

In view of this, the present utility model aims to propose a fuel cell hydrogen concentration detector performance test device, which can realize the rapid performance test of the hydrogen concentration detector, and has the function of timing automatic reset to prevent the short circuit time from being too long. Unnecessary damage to the tested hydrogen concentration detector and related connected equipment.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

A performance testing device for a hydrogen concentration detector of a fuel cell, comprising an explosion-proof casing; connection plug-ins are provided at the left and right ends of the explosion-proof casing, and the connection plug-ins include signal wire terminals, power wire terminals and ground wire terminals; the same terminals of the two connection plug-ins are located in The corresponding wires in the explosion-proof casing are connected; the lower surface of the explosion-proof casing is provided with a resin perspective window, and the upper surface of the explosion-proof casing is embedded with a delay switch and a button switch. The other end is connected with the connecting wire between the two grounding wire terminals; the button switch is connected to the connecting wire between the two grounding wire terminals, and is used to control the on-off between the two grounding wire terminals.

Further, the delay switch is a 5-second delay reset switch.

Further, the explosion-proof enclosure is rectangular in shape.

Further, the upper surface of the explosion-proof casing is provided with a nameplate for identifying the type of switch.

Further, the rear surface of the explosion-proof casing is a hollow notch, and the resin perspective window is fixed and covered on the hollow notch by screws.

Further, the four corners of the explosion-proof casing are provided with rounded corners.

Compared with the prior art, the utility model is a fuel cell hydrogen concentration detector performance testing device, which has the following advantages:

The utility model relates to a performance testing device for a hydrogen concentration detector of a fuel cell, which can realize rapid performance testing of the hydrogen concentration detector, and has the function of timing automatic reset, so as to prevent the hydrogen concentration detector being tested due to an excessively long short-circuit time. and related connected equipment will cause unnecessary damage.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

In the attached image:

1 is a schematic structural diagram of a performance testing device for a fuel cell hydrogen concentration detector according to an embodiment of the present invention;

2 is a left side schematic diagram of a performance testing device for a fuel cell hydrogen concentration detector according to an embodiment of the present utility model;

3 is a schematic bottom view of a performance testing device for a fuel cell hydrogen concentration detector according to an embodiment of the present utility model;

4 is a schematic diagram of the principle of a performance testing device for a fuel cell hydrogen concentration detector according to an embodiment of the present invention.

Description of reference numbers:

1-explosion-proof shell; 2-resin perspective window; 3-delay switch; 4-button switch; 5-connection plug-in.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility. The novel and simplified description does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figures 1-4, a fuel cell hydrogen concentration detector performance testing device includes an explosion-proof casing 1; the left and right ends of the explosion-proof casing 1 are provided with connection plug-ins 5, and the connection plug-ins 5 include signal wire terminals and power wire terminals. The same terminals of the two connection plug-ins 5 are connected to corresponding wires in the explosion-proof casing 1; the lower surface of the explosion-proof casing 1 is provided with a resin perspective window 2, and the upper surface of the explosion-proof casing 1 is embedded with a time delay switch 3 and a button switch 4. One end of the time switch 3 is connected to the connection wire between the two power line terminals, and the other end of the delay switch 3 is connected to the connection wire between the two ground wire terminals; the button switch 4 is connected to the connection between the two ground wire terminals On the wire, it is used to control the continuity between the two ground wire terminals.

As shown in FIG. 4 , in this embodiment, one of the two connection plugs 5 is connected to the hydrogen concentration detector to be tested, and the other is connected to the connecting line of the hydrogen concentration detector on the vehicle. When the short-circuit test is performed, the operator closes the delay switch 3 and the button switch 4, and the hydrogen concentration detector under test is in a short-circuit state at this time, and it can be observed whether there is a corresponding short-circuit fault prompt of the hydrogen concentration detector on the vehicle; when the open-circuit test is performed At this time, the operator does not close the delay switch 3, but closes the button switch 4. At this time, the tested hydrogen concentration detector is in an open circuit state, and it can be observed whether there is a corresponding hydrogen concentration detector open circuit fault on the vehicle.

As shown in Figure 1-4, delay switch 3 is a 5-second delay reset switch.

When the hydrogen concentration detector to be tested is short-circuited, a long-term short circuit will easily damage the hydrogen concentration detector and related connected components. Therefore, the delay switch 3 used is a 5-second delay reset switch. When the closing time exceeds After 5 seconds, the delay switch 3 will automatically reset and disconnect, which avoids the damage to the hydrogen concentration detector or the connected equipment caused by the neglect of the reset switch for a long time.

As shown in Figures 1-4, the explosion-proof enclosure 1 is rectangular in shape.

As shown in Figure 1-4, the upper surface of the explosion-proof enclosure 1 is provided with a nameplate for identifying the type of switch.

As shown in Figure 1-4, the rear surface of the explosion-proof housing 1 is a hollow notch, and the resin see-through window 2 is fixed and covered on the hollow notch with screws.

The use of the resin see-through window 2 allows the operator to observe the circuit connection in the explosion-proof enclosure 1 at any time. If the switch pins are damaged due to multiple short-circuit or open-circuit tests, the components can be replaced and repaired in time.

As shown in Figure 1-4, the four corners of the explosion-proof enclosure 1 are provided with rounded corners.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of the new protection.

Claims (6)

1. The performance testing device for the hydrogen concentration detector of the fuel cell is characterized in that: comprises an explosion-proof shell (1); the left end and the right end of the explosion-proof shell (1) are respectively provided with a connecting plug-in (5), and the connecting plug-in (5) comprises a signal line terminal, a power line terminal and a ground line terminal; the same terminals of the two connecting plug-in units (5) are communicated with corresponding leads in the explosion-proof shell (1); a resin perspective window (2) is arranged on the lower surface of the explosion-proof shell (1), a time delay switch (3) and a button switch (4) are embedded in the upper surface of the explosion-proof shell (1), one end of the time delay switch (3) is communicated with a connecting wire between the two power line terminals, and the other end of the time delay switch (3) is communicated with a connecting wire between the two ground line terminals; the button switch (4) is connected to a connecting lead between the two grounding terminals and is used for controlling the on-off of the two grounding terminals.

2. The fuel cell hydrogen concentration detector performance testing device according to claim 1, characterized in that: the delay switch (3) is a 5-second delay reset switch.

3. The fuel cell hydrogen concentration detector performance testing device according to claim 1, characterized in that: the explosion-proof housing (1) is rectangular in shape.

4. The fuel cell hydrogen concentration detector performance testing device according to claim 1, characterized in that: and a nameplate for identifying the type of the switch is arranged on the upper surface of the explosion-proof shell (1).

5. The fuel cell hydrogen concentration detector performance testing device according to claim 1, characterized in that: the rear surface of the explosion-proof shell (1) is a hollow notch, and the resin perspective window (2) is fixedly covered on the hollow notch by using a screw.

6. The fuel cell hydrogen concentration detector performance testing device according to claim 1, characterized in that: and four corners of the explosion-proof shell (1) are provided with round corners.

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