Voltage detection device for fuel cell and connection terminal thereof

Abstract

The present application provides a voltage detection device for detecting fuel cell voltage, which comprises a set of connection terminals, a set of connection wires and a voltage detector, wherein the connection terminals are electrically connected with the voltage detector through the connection wires respectively to transmit the detected electric signal of the pole plate of the fuel cell to the voltage detector.

Description

TECHNICAL FIELD

[0001] The present application relates to a fuel cell, and in particular to a voltage detection device for detecting the voltage of a fuel cell. Further, the present application also relates to a connection terminal of a fuel cell voltage detection device. BACKGROUND

[0002] A fuel cell is a power generation device that directly converts the chemical energy of a fuel into electrical energy. The fuel cell is not limited by the Carnot cycle effect, and thus has a high power generation efficiency. In addition, since the fuel cell directly converts chemical energy into electrical energy through an electrochemical reaction, the fuel cell has a simple structure and does not require an energy conversion element. Finally, the electrochemical reaction of the fuel cell, particularly a hydrogen fuel cell, is complete and clean, and produces very little pollution.

[0003] In recent years, with the increasing emphasis on energy conservation and environmental protection, fuel cell technology has been rapidly developed and widely applied in various fields. Generally, in practical applications, a fuel cell is stacked by a plurality of single fuel cells (or fuel cell units), each of which includes an anode plate, a cathode plate, and an electrode group disposed between the two plates. In order to ensure the normal operation and stable power generation of the entire fuel cell, it is necessary to detect each fuel cell unit, such as detecting and monitoring the voltage of each fuel cell unit during the electrochemical reaction.

[0004] The existing voltage detection device or system for detecting the voltage of a fuel cell unit generally includes a connection terminal and a voltage detector, which is in contact with the pole plate of the fuel cell through the connection terminal, and then detects the voltage of the pole plate of the fuel cell unit through the voltage detector connected with the connection terminal. For example, the Chinese patent application No. 200910248420.0 discloses a voltage detection device for detecting the voltage of a fuel cell unit, which includes a wiring terminal and a patrol system, wherein the probe of the wiring terminal is fixed on a fixed plate, and the probe is arranged to be electrically connected with the pole plate of the fuel cell and the patrol system, respectively. However, the probe of the patent application is connected with the pole plate through a telescopic probe, which requires a continuous external force to connect the probe with the pole plate. In addition, a plurality of probes are fixed on a fixed plate, which also causes the assembly of the pole plate of the fuel cell and the setting of the probe hole on the pole plate to be matched with the connection terminal, rather than the connection terminal being adjusted to be matched with the pole plate of the fuel cell, which inevitably causes inconvenience in the manufacture of the fuel cell. SUMMARY

[0005] The primary object of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell (single cell), wherein the voltage detecting device is electrically connected (or electrically connectable) to the polar plate of the fuel cell single cell through a connection terminal, and the connection terminal can maintain the electrical connection with the polar plate of the fuel cell without any external force after being connected to the fuel cell.

[0006] Another object of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell, wherein the connection terminal of the voltage detecting device is designed to allow the user to electrically connect it to the polar plate of the fuel cell, respectively. In other words, the use of the connection terminal of the voltage detecting device does not have any restrictive requirements on the assembly of the polar plate of the fuel cell and the setting position of the jack.

[0007] Another object of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell, wherein the connection terminal of the voltage detecting device is designed to allow the user to electrically connect it to the polar plate of the fuel cell, respectively. In other words, the use of the connection terminal of the voltage detecting device does not have any restrictive requirements on the assembly of the polar plate of the fuel cell and the setting position of the jack.

[0008] Another object of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell, wherein the connection terminal of the voltage detecting device is designed to allow the user to electrically connect it to the polar plate of the fuel cell, respectively. In other words, the use of the connection terminal of the voltage detecting device does not have any restrictive requirements on the assembly of the polar plate of the fuel cell and the setting position of the jack.

[0009] Another object of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell, wherein the connection terminal of the voltage detecting device is designed to allow the user to electrically connect it to the polar plate of the fuel cell, respectively. In other words, the use of the connection terminal of the voltage detecting device does not have any restrictive requirements on the assembly of the polar plate of the fuel cell and the setting position of the jack.

[0010] Another advantage of the present application is to provide a voltage detecting device for detecting the voltage of a fuel cell, wherein the connection terminal of the voltage detecting device does not require precise components and complex structure, and the manufacturing process is simple, low in cost and easy to use.

[0011] Other objects and features of the present application will become apparent from the following detailed description, from the appended claims, and from the accompanying drawings in which:

[0012] According to an aspect of the present application, the voltage detecting device for detecting the voltage of a fuel cell of the present application, which can achieve the aforementioned objects and other objects and purposes, comprises:

[0013] a set of connection terminals;

[0014] a voltage detector; and

[0015] a set of connection wires, wherein the connection terminal is electrically connected to the voltage detector through the connection wires, respectively, to transmit the detected electric signal of the electrode plate of the fuel cell to the voltage detector.

[0016] According to the preferred embodiment of the present application, the connection terminal of the voltage detecting device for detecting the voltage of the fuel cell has a detecting end adapted to be inserted into the detecting hole of the electrode plate of the fuel cell and a connecting end connected to the connection wires.

[0017] According to another aspect of the present application, the present application further provides a connection terminal of a voltage detecting device for detecting the voltage of the fuel cell, wherein the connection terminal has a detecting end and a connecting end extending from the detecting end, wherein the detecting end is adapted to be inserted into the detecting hole of the electrode plate of the fuel cell for receiving the voltage signal of the electrode plate of the fuel cell, and the connecting end is adapted to be electrically connected to the connection wires for transmitting the voltage signal to the voltage detector through the connection wires.

[0018] Further objects and advantages of the present application will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] These and other objects, features and advantages of the present application will become apparent from the following detailed description of the application, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural diagram of a voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0021] Figure 2 is a voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0022] Figure 3 is a perspective view of the connection terminal of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0023] Figure 4 is a front view of the connection terminal of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0024] Figure 5 is a side view of the connection terminal of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0025] Figure 6 is an exploded view of the connection terminal of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application.

[0026] Figure 7 is a working schematic view of a connection terminal of a voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application, wherein the connection terminal shown in the figure is inserted into a detecting hole of a polar plate of the fuel cell.

[0027] Figure 8 is a working schematic view of a connection terminal of a voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application, wherein the connection terminal shown in the figure is pulled out of a detecting hole of a polar plate of the fuel cell. DETAILED DESCRIPTION

[0028] The following description is presented to enable any person skilled in the art to practice the present application as claimed. The preferred embodiments disclosed herein are only examples of the present application and alternative embodiments can be devised by those skilled in the art without departing from the spirit and scope of the present application. The present application is defined by the appended claims.

[0029] Those skilled in the art will understand that, in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms cannot be understood as a limitation of the present application.

[0030] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation of the number.

[0031] Referring to the drawings of the specification Figures 1 to 8 As shown in the drawings, the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application is illustrated, wherein the voltage detecting device of the present application comprises at least one connection terminal 10, at least one connection lead 20 and a voltage detector 30, wherein the connection terminal 10 is electrically connected to the voltage detector 30 through the connection lead 20 respectively, so as to transmit the detected electric (voltage) signal of the polar plate 2 of the fuel cell 1 to the voltage detector 30. Preferably, the voltage detecting device of the present application comprises a set of connection terminals 10 and a set of connection leads 20. It can be understood that the polar plate 2 of the fuel cell 1 is a cathode plate and / or an anode plate.

[0032] As shown in the drawings, Figures 2 to 8As shown in FIG. 1, the connecting terminal 10 of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application is provided with one end adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1 and the other end adapted to be electrically connected with the connecting wire 20, so that the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 and detect the voltage of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 when the fuel cell 1 is in operation.

[0033] As shown in FIG. 1, Figures 2 to 8 As shown in FIG. 1, the connecting terminal 10 of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application includes two plug-in parts 11, wherein each of the plug-in parts 11 has an insertion end 111, a connecting end 112 and a protruding part 113, wherein the two plug-in parts 11 of the connecting terminal 10 are fixed together through the connecting ends 112 of the two plug-in parts 11, and the distance between the protruding parts 113 of the two plug-in parts 11 of the connecting terminal 10 is greater than the distance between the insertion ends 111 of the two plug-in parts 11 of the connecting terminal 10. Preferably, the distance between the protruding parts 113 of the two plug-in parts 11 of the connecting terminal 10 is greater than the distance between the connecting ends 112 of the two plug-in parts 11 of the connecting terminal 10. More preferably, the two plug-in parts 11 of the connecting terminal 10 are provided in mirror symmetry. Most preferably, the protruding parts 113 of the plug-in parts 11 of the connecting terminal 10 are respectively provided at the insertion ends 111 and the connecting ends 112, and the protruding parts 113 of the plug-in parts 11 respectively extend outwardly from the insertion ends 111 and the connecting ends 112, wherein the protruding parts 113 of the plug-in parts 11 have an arc-shaped cross section. Alternatively, the protruding parts 113 have a C-shaped cross section. It can be understood that, since the distance between the insertion ends 111 of the two plug-in parts 11 of the connecting terminal 10 is smaller than the distance between the protruding parts 113 of the two plug-in parts 11 of the connecting terminal 10, the insertion ends 111 of the two plug-in parts 11 of the connecting terminal 10 can guide the two plug-in parts 11 of the connecting terminal 10, especially the protruding parts 113, to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1 when the connecting terminal 10 is inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1.

[0034] As shown in FIG. 1, Figures 2 to 8As shown in FIG. 1, the two insertion pieces 11 of the connection terminal 10 for detecting the voltage of the fuel cell according to the preferred embodiment of the present application are fixed together by the connecting end 112, in which the inner side walls 1131 of the protruding portions 113 of the two insertion pieces 11 are arranged to face each other. In other words, the protruding portions 113 of the two insertion pieces 11 are arranged to protrude outwardly. Accordingly, the protruding portions 113 of the two insertion pieces 11 of the connection terminal 10 form a deformation space therebetween, thereby providing necessary space for deformation of the two insertion pieces 11 of the connection terminal 10. In other words, the protruding portions 113 of the two insertion pieces 11 of the connection terminal 10 protrude outwardly, thereby forming a deformation space therebetween for deformation of the two insertion pieces 11 of the connection terminal 10.

[0035] As shown in FIG. 1, Figure 7 and Figure 8 As shown in FIG. 1, the protruding portions 113 of the two insertion pieces 11 of the connection terminal 10 preferably have an arc-shaped cross section, so that the deformation space formed by the two insertion pieces 11 of the connection terminal 10 is elliptical (or nearly elliptical), thereby facilitating insertion of the two insertion pieces 11 of the connection terminal 10 into the detection hole 200 of the polar plate 2 of the fuel cell 1. More preferably, the insertion piece 11 of the connection terminal 10 is strip-shaped or plate-shaped. Those skilled in the art can understand that when the deformation space formed by the two insertion pieces 11 of the connection terminal 10 is elliptical, the distance between the two insertion pieces 11 of the connection terminal 10 gradually increases, thereby facilitating gradual deformation of the two insertion pieces 11 of the connection terminal 10 during insertion into the detection hole 200 of the polar plate 2 of the fuel cell 1, rather than sudden deformation. This facilitates insertion of the protruding portions 113 of the two insertion pieces 11 of the connection terminal 10 into the detection hole 200 of the polar plate 2 of the fuel cell 1 under the guidance of the insertion end 111. In other words, the protruding portions 113 of the insertion piece 11 having an arc-shaped (or "C"-shaped) cross section facilitate insertion of the insertion piece 11 into the detection hole 200 of the polar plate 2 of the fuel cell 1.

[0036] It is worth noting that the two insertion parts 11 of the connection terminal 10 are made of deformable conductive material, such as stainless steel, copper or other metal or metal alloy, so that when the protruding part 113 of the insertion part 11 of the connection terminal 10 is inserted into the detection hole 200 of the polar plate 2 of the fuel cell 1, the protruding part 113 of the insertion part 11 is pressed by the inner wall of the detection hole 200 of the polar plate 2 of the fuel cell 1, causing the deformation of the insertion part 11, so that the protruding part 113 of the insertion part 11 can be pressed against the inner wall of the detection hole 200 of the polar plate 2, and a good contact or electrical connection is established between the protruding part 113 of the insertion part 11 and the polar plate 2. However, when the protruding part 113 of the insertion part 11 of the connection terminal 10 is inserted into the detection hole 200 of the polar plate 2 of the fuel cell 1, the deformation of the protruding part 113 of the insertion part 11 under the pressure of the polar plate 2 of the fuel cell 1 can occur at the protruding part 113 of the insertion part 11, at the connection between the protruding part 113 of the insertion part 11 and the connecting end 112 of the insertion part 11, or even at the connecting end 112 of the insertion part 11.

[0037] As shown in the accompanying drawings Figure 7 The protruding part 113 of the two insertion parts 11 of the connection terminal 10 preferably has a fitting part 1131, wherein the fitting part 1131 of the protruding part 113 has a flat surface 1130, wherein when the two insertion parts 11 of the connection terminal 10 are inserted into the detection hole 200 of the polar plate 2 of the fuel cell 1 and the two insertion parts 11 of the connection terminal 10 are deformed under the pressure of the inner wall of the detection hole 200 of the polar plate 2 of the fuel cell 1, the flat surface 1130 of the fitting part 1131 of the protruding part 113 of the two insertion parts 11 of the connection terminal 10 is arranged to be pressed against the inner wall of the detection hole 200 of the polar plate 2 of the fuel cell 1. In other words, the two insertion parts 11 of the connection terminal 10 form a flat surface contact with the polar plate 2 of the fuel cell 1 through the fitting part 1131 of the two insertion parts 11 of the connection terminal 10, so that the contact or electrical connection between the two insertion parts 11 of the connection terminal 10 and the polar plate 2 of the fuel cell 1 is better.

[0038] As shown in the accompanying drawings Figure 7As shown, in a preferred embodiment of the present invention, the connection terminal 10 of the voltage detection device for detecting the voltage of a fuel cell is inserted into the detection hole 200 of the electrode plate 2 of the fuel cell 1. Since the insertion ends 111 and protrusions 113 of the two plugs 11 of the connection terminal 10 are spaced apart, and the two plugs 11 of the connection terminal 10 are fixed together by their connection ends 112, the protrusions 113 of the two plugs 11 of the connection terminal 10 deform under the pressure of the inner wall of the detection hole 200 of the electrode plate 2 of the fuel cell 1. Under the action of the deformation force of the plugs 11, the protrusions 113 of the two plugs 11 of the connection terminal 10 press against the inner wall of the detection hole 200 of the electrode plate 2 of the fuel cell 1, thereby establishing a good contact or electrical connection between the protrusions 113 of the plugs 11 and the electrode plate 2.

[0039] As shown in the attached image. Figure 8 As shown, in a preferred embodiment of the present invention, the connection terminal 10 of the voltage detection device for detecting the voltage of a fuel cell is pulled out from the detection hole 200 of the electrode plate 2 of the fuel cell 1, wherein the arcuate cross-section of the protrusion 113 of the plug 11 makes it easier for the plug 11 to be pulled out from the detection hole 200 of the electrode plate 2 of the fuel cell 1.

[0040] As shown in the attached image. Figures 2 to 8 As shown, according to a preferred embodiment of the present invention, the connection terminal 10 of the voltage detection device for detecting fuel cell voltage further includes a fixing plate 114, wherein the connecting ends 112 of the two plugs 11 of the connection terminal 10 are respectively fixed to the fixing plate 114. Preferably, the fixing plate 114 is respectively fixed to the ends 112 of the two plugs 11 of the connection terminal 10, so that when the connection terminal 10 is inserted into the detection hole 200 of the electrode plate 2 of the fuel cell 1, the two plugs 11 of the connection terminal 10 are more easily deformed and inserted into the detection hole 200 of the electrode plate 2 of the fuel cell 1, and when the connection terminal 10 is pulled out from the detection hole 200 of the electrode plate 2 of the fuel cell 1, the two plugs 11 of the connection terminal 10 are more easily pulled out from the detection hole 200 of the electrode plate 2 of the fuel cell 1. (See attached figures) Figures 2 to 8 As shown, preferably, the connecting end 112 of the plug-in 11 of the connecting terminal 10 is plate-shaped, wherein the fixing plate 114 is fixed to the side of the connecting end 112. In other words, since the fixing plate 114 is fixed to the side of the connecting end 112, the fixing plate 114 does not prevent the connecting end 112 of the plug-in 11 from deforming.

[0041] As shown in the attached image. Figures 2 to 8As shown, the connecting terminal 10 of the voltage detecting device for detecting the voltage of the fuel cell according to the preferred embodiment of the present application further comprises two holding members 12, wherein the holding members 12 are respectively arranged at the inner side wall 1132 of the protruding portion 113 of the plug-in member 11 of the connecting terminal 10.

[0042] As shown in the drawings, Figures 2 to 8 As shown, the holding member 12 of the connecting terminal 10 has a holding end 121 and a fixing end 122 extending from the holding end 121, wherein the holding end 121 of the holding member 12 is arranged to press against the inner side wall 1132 of the protruding portion 113 of the plug-in member 11, and the fixing end 122 of the holding member 12 is fixed between the connecting ends 112 of the plug-in member 11 of the connecting terminal 10.

[0043] As shown in the drawings, Figures 2 to 8 As shown, preferably, the holding end 121 of the holding member 12 of the connecting terminal 10 is arranged to have an arc-shaped cross section, and the protruding direction of the holding end 121 is opposite to the protruding direction of the corresponding protruding portion 113 of the plug-in member 11. Preferably, the fixing end 122 of the holding member 12 of the connecting terminal 10 is fixed together or integrally formed.

[0044] It is worth noting that the holding end 121 of the holding member 12 of the connecting terminal 10 is arranged to press against the inner side wall 1132 of the protruding portion 113 of the plug-in member 11 respectively, and the holding end 121 of the holding member 12 of the connecting terminal 10 is arranged to be arc-shaped, which is helpful for the shape recovery when the plug-in member 11 is pulled out from the detection hole 200 of the polar plate 2 of the fuel cell 1. In addition, the holding end 121 of the holding member 12 of the connecting terminal 10 further enhances the force exerted by the plug-in member 11 of the connecting terminal 10 on the inner wall of the detection hole 200 of the polar plate 2 of the fuel cell 1 when the plug-in member 11 of the connecting terminal 10 is inserted into the detection hole 200 of the polar plate 2 of the fuel cell 1, so that the plug-in member 11 of the connecting terminal 10 can be stably inserted into the detection hole 200 of the polar plate 2 of the fuel cell 1.

[0045] As shown in the drawings, Figures 2 to 8As shown in FIG. 1, the protruding part 113 of the insertion part 11 of the connecting terminal 10 of the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application forms a detecting end 13 for establishing electrical connection with the electrode plate 2 of the fuel cell 1, and the connecting end 112 of the insertion part 11 of the connecting terminal 10 is adapted to be electrically connected with the connecting wire 20, so that when the fuel cell 1 is in operation, the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 and detect the voltage of the electrode plate 2 of the fuel cell 1. Accordingly, the detecting end 13 is adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1.

[0046] As shown in FIG. 1, the protruding part 113 of the insertion part 11 of the connecting terminal 10 of the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application forms a detecting end 13 for establishing electrical connection with the electrode plate 2 of the fuel cell 1, and the connecting end 112 of the insertion part 11 of the connecting terminal 10 is adapted to be electrically connected with the connecting wire 20, so that when the fuel cell 1 is in operation, the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 and detect the voltage of the electrode plate 2 of the fuel cell 1. Accordingly, the detecting end 13 is adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1. Figures 2 to 8 As shown in FIG. 1, the protruding part 113 of the insertion part 11 of the connecting terminal 10 of the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application forms a detecting end 13 for establishing electrical connection with the electrode plate 2 of the fuel cell 1, and the connecting end 112 of the insertion part 11 of the connecting terminal 10 is adapted to be electrically connected with the connecting wire 20, so that when the fuel cell 1 is in operation, the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 and detect the voltage of the electrode plate 2 of the fuel cell 1. Accordingly, the detecting end 13 is adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1.

[0047] It can be understood that the insertion part 11 and the holding part 12 of the connecting terminal 10 are both machined from a whole piece of metal plate. In other words, the insertion end 111, the protruding part 113, the connecting end 112 and the fixing plate 114 of the insertion part 11 are integrally formed, and the holding end 121 and the fixing end 122 of the holding part 12 are integrally formed.

[0048] As shown in FIG. 1, the protruding part 113 of the insertion part 11 of the connecting terminal 10 of the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application forms a detecting end 13 for establishing electrical connection with the electrode plate 2 of the fuel cell 1, and the connecting end 112 of the insertion part 11 of the connecting terminal 10 is adapted to be electrically connected with the connecting wire 20, so that when the fuel cell 1 is in operation, the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 and detect the voltage of the electrode plate 2 of the fuel cell 1. Accordingly, the detecting end 13 is adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1. Figure 1 Figure 2 As shown in FIG. 1, the protruding part 113 of the insertion part 11 of the connecting terminal 10 of the voltage detecting device for detecting voltage of a fuel cell according to the preferred embodiment of the present application forms a detecting end 13 for establishing electrical connection with the electrode plate 2 of the fuel cell 1, and the connecting end 112 of the insertion part 11 of the connecting terminal 10 is adapted to be electrically connected with the connecting wire 20, so that when the fuel cell 1 is in operation, the voltage detector 30 can acquire the electrical signal of the electrode plate 2 of the fuel cell 1 through the connecting terminal 10 and detect the voltage of the electrode plate 2 of the fuel cell 1. Accordingly, the detecting end 13 is adapted to be inserted into the detecting hole 200 of the electrode plate 2 of the fuel cell 1.

[0049] It can be understood that the insertion part 11 and the holding part 12 of the connecting terminal 10 are both machined from a whole piece of metal plate. In other words, the insertion end 111, the protruding part 113, the connecting end 112 and the fixing plate 114 of the insertion part 11 are integrally formed, and the holding end 121 and the fixing end 122 of the holding part 12 are integrally formed.

[0050] ​The object of the present application has been completely and effectively achieved. The function and structural principle of the present application have been shown and explained in the embodiments, and the embodiments of the present application can be any deformation or modification without departing from the principle.

Claims

1. A voltage detection device for detecting the voltage of a fuel cell, characterized in that, include: Two retainers; A set of connection terminals; A set of connecting wires; and A voltage detector is provided, wherein the connection terminals are electrically connected to the voltage detector via connecting wires to transmit the detected electrical signal of the fuel cell plates to the voltage detector. Each connection terminal includes two connectors, each connector having an insertion end, a connection end, and a protrusion. The two connectors are fixed together by their connection ends. A retaining member of the connection terminal has a retaining end and a fixing end extending from the retaining end, and the retaining ends of the two retaining members are respectively provided. The retainer is fixedly disposed between the connecting ends of the connector and the plug-in, pressing against the inner wall of the protrusion of the corresponding plug-in. The retaining end of the retainer of the connecting terminal is provided with an arc-shaped cross-section, and the protrusion direction of the retaining end is opposite to the protrusion direction of the protrusion of the corresponding plug-in. The two plug-ins and the two retainers are all processed from a single piece of metal plate, and the two plug-ins form a deformation space between them. The retaining ends of the two retainers also form a deformation space between them.

2. The voltage detection device according to claim 1, characterized in that, One end of the connection terminal is provided with a detection hole suitable for insertion into the electrode plate of the fuel cell, and the other end is provided with a connection wire suitable for electrical connection.

3. The voltage detection device according to claim 1, characterized in that, The distance between the protrusions of the two plugs of the connecting terminal is greater than the distance between the insertion ends of the two plugs of the connecting terminal.

4. The voltage detection device according to claim 3, characterized in that, The distance between the protrusions of the two plugs of the connecting terminal is greater than the distance between the connecting ends of the two plugs of the connecting terminal.

5. The voltage detection device according to claim 1, characterized in that, The distance between the protrusions of the two plugs of the connecting terminal is greater than the distance between the connecting ends of the two plugs of the connecting terminal.

6. The voltage detection device according to claim 3, characterized in that, The two connectors of the connection terminal are arranged in mirror symmetry.

7. The voltage detection device according to claim 5, characterized in that, The two connectors of the connection terminal are arranged in mirror symmetry.

8. The voltage detection device according to claim 3, characterized in that, The protrusion of the connector extends outward from the insertion end and the connection end respectively, so that the protrusion of the connector has an arc-shaped cross-section.

9. The voltage detection device according to claim 7, characterized in that, The protrusion of the connector extends outward from the insertion end and the connection end respectively, so that the protrusion of the connector has an arc-shaped cross-section.

10. The voltage detection device according to claim 3, characterized in that, The protrusion of the connector of the connection terminal has a fitting portion, wherein the fitting portion has a flat surface, wherein the fitting portion is configured such that when the connector of the connection terminal is inserted into the detection hole of the electrode plate of the fuel cell, the flat surface of the fitting portion can press against the inner wall of the detection hole of the electrode plate of the fuel cell.

11. The voltage detection device according to claim 9, characterized in that, The protrusion of the connector of the connection terminal has a fitting portion, wherein the fitting portion has a flat surface, wherein the fitting portion is configured such that when the connector of the connection terminal is inserted into the detection hole of the electrode plate of the fuel cell, the flat surface of the fitting portion can press against the inner wall of the detection hole of the electrode plate of the fuel cell.

12. The voltage detection device according to claim 3, characterized in that, It further includes a fixing plate, wherein the fixing plate is respectively fixed to the side of the connecting end of the connector of the connecting terminal.

13. The voltage detection device according to claim 11, characterized in that, It further includes a fixing plate, wherein the fixing plate is respectively fixed to the side of the connecting end of the connector of the connecting terminal.

14. The voltage detection device according to any one of claims 1 to 12, characterized in that, The connector of the connection terminal is made of a deformable conductive material.

15. The voltage detection device according to claim 13, characterized in that, The connector of the connection terminal is made of a deformable conductive material.

16. A connection terminal for a voltage detection device used to detect the voltage of a fuel cell, characterized in that, include: Two retainers; and Two connectors, each having an insertion end, a connection end, and a protrusion, wherein the two connectors of a connecting terminal are fixed together by their connection ends, and the distance between the protrusions of the two connectors of the connecting terminal is greater than the distance between the insertion ends of the two connectors of the connecting terminal. A retainer has a retaining end and a fixing end extending from the retaining end, wherein the retaining ends of the two retainers are respectively disposed to press against the inner sidewall of the protrusion of the corresponding connector, and the fixing end of the retainer is fixedly disposed between the connection ends of the connectors of the connecting terminal. The retaining end of the retainer of the connecting terminal is provided with an arcuate cross-section, and the protrusion direction of the retaining end is opposite to the protrusion direction of the protrusion of the corresponding connector. The two connectors and the two retainers are all machined from a single piece of metal plate, and the two connectors form a deformation space between them, and the retaining ends of the two retainers form a deformation space between them.

17. The connecting terminal according to claim 16, characterized in that, The distance between the protrusions of the two plugs of the connecting terminal is greater than the distance between the connecting ends of the two plugs of the connecting terminal.

18. The connecting terminal according to claim 16, characterized in that, The two connectors of the connection terminal are arranged in mirror symmetry.

19. The connecting terminal according to claim 17, characterized in that, The two connectors of the connection terminal are arranged in mirror symmetry.

20. The connecting terminal according to claim 16, characterized in that, The protrusion of the connector extends outward from the insertion end and the connection end respectively, so that the protrusion of the connector has an arc-shaped cross-section.

21. The connecting terminal according to claim 19, characterized in that, The protrusion of the connector extends outward from the insertion end and the connection end respectively, so that the protrusion of the connector has an arc-shaped cross-section.

22. The connecting terminal according to claim 16, characterized in that, The protrusion of the connector of the connection terminal has a fitting portion, wherein the fitting portion has a flat surface, wherein the fitting portion is configured such that when the connector of the connection terminal is inserted into the detection hole of the electrode plate of the fuel cell, the flat surface of the fitting portion can press against the inner wall of the detection hole of the electrode plate of the fuel cell.

23. The connecting terminal according to claim 21, characterized in that, The protrusion of the connector of the connection terminal has a fitting portion, wherein the fitting portion has a flat surface, wherein the fitting portion is configured such that when the connector of the connection terminal is inserted into the detection hole of the electrode plate of the fuel cell, the flat surface of the fitting portion can press against the inner wall of the detection hole of the electrode plate of the fuel cell.

24. The connecting terminal according to claim 16, characterized in that, It further includes a fixing plate, wherein the fixing plate is respectively fixed to the side of the connecting end of the connector of the connecting terminal.

25. The connecting terminal according to claim 23, characterized in that, It further includes a fixing plate, wherein the fixing plate is respectively fixed to the side of the connecting end of the connector of the connecting terminal.

26. The connecting terminal according to any one of claims 16 to 24, characterized in that, The connector of the connection terminal is made of a deformable conductive material.

27. The connecting terminal according to claim 25, characterized in that, The connector of the connection terminal is made of a deformable conductive material.

Images