Fuel cell voltage detection device

Abstract

The invention relates to the technical field of fuel cell detection, in particular to a fuel cell voltage detection device, which comprises voltage monitoring equipment and a connecting assembly, the voltage monitoring equipment comprises a signal receiving end; the connecting assembly comprises a wire and a conducting strip, one end of the wire is used for being connected with the signal receiving end, the other end of the wire is connected with the conducting strip, and the conducting strip is used for being connected with an electrode of a single battery at a set position in the battery structure and packaged in the battery structure. According to the fuel cell voltage detection device provided by the invention, the conducting strip is embedded in the cell structure and is connected with the positive electrode and the negative electrode of the single cell to be measured, and the voltage of the single cell in a working state is detected by using the voltage monitoring equipment; besides, in the testing process, the voltage detection device is arranged in the electric furnace, the positions of the wires are adjusted through the movable support, the wires cannot be wound or make contact with the battery structure, the testing accuracy can be improved, and the service life of the testing device can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell detection, and in particular to a fuel cell voltage detection device. Background Art

[0002] Fuel cells can convert the chemical energy of fuel into electrical energy, and are an efficient and clean energy source. Among various fuel cells, solid oxide fuel cells are all-solid-state power generation devices that convert the chemical energy stored in fuel into electrical energy under medium and high temperature conditions. They not only have efficient energy conversion, but also do not have problems such as leakage and corrosion. At the same time, their high preheating temperature can achieve large-scale combined heat and electricity supply, effectively improving the comprehensive utilization rate of fuels. Therefore, they are also considered to be very promising fuel cells.

[0003] Solid oxide fuel cells operate under harsh conditions. High temperature, strong redox and multi-physical field coupling make in-situ measurement of the battery's working state difficult, especially when the battery stack is sealed and the voltage on both sides of the anode and cathode of each single cell inside a multi-cell stack is measured. Also, when measuring, the wires are laid long, which makes it easy for the wires to get entangled and inevitably come into contact with high-temperature devices, affecting the test results and the service life of the test equipment. Summary of the invention

[0004] In order to solve at least the above technical problems existing in the prior art, the present invention provides a fuel cell voltage detection device.

[0005] On the one hand, the present invention provides a fuel cell voltage detection device, including a voltage monitoring device and a connecting component; the voltage monitoring device includes a signal receiving end; the connecting component includes a wire and a conductive sheet, one end of the wire is used to connect to the signal receiving end, and the other end is connected to the conductive sheet, the conductive sheet is used to connect to the electrode of a single-chip battery at a set position in a battery structure, and is encapsulated in the battery structure.

[0006] In some embodiments, a movable bracket is further included, and the movable bracket is arranged in the electric furnace where the battery structure is located; the voltage monitoring device is arranged on the movable bracket and has a set distance from the battery structure.

[0007] In some embodiments, the movable bracket includes a slide rail and a locking structure; the slide rail is arranged along the height direction of the movable bracket, and the voltage monitoring device is slidably connected to the slide rail; the locking structure is used to lock the voltage monitoring device in a set position.

[0008] In some embodiments, the locking structure includes a tightening bolt, and the voltage monitoring device includes a sliding portion slidably connected to the slide rail; the tightening bolt is threadedly connected to the sliding portion and is used to tighten the slide rail to limit the relative position of the sliding portion and the slide rail.

[0009] In some embodiments, the slide rail is columnar, the sliding part is the shell of the voltage monitoring device, the shell includes a sleeve, and the sleeve is sleeved on the slide rail; the tightening bolt is threadedly connected to the shell, and the tightening end of the tightening bolt is located in the sleeve.

[0010] In some embodiments, the movable bracket also includes a counterweight base; the slide rail is vertically connected to the top of the counterweight base.

[0011] In some embodiments, the voltage monitoring device includes a connection end surface, and the connection end surface is provided with a plurality of the signal receiving ends.

[0012] In some embodiments, the connection end surface is located on a side surface of the shell; and a plurality of the signal receiving ends are arranged in an array on the connection end surface.

[0013] In some embodiments, the voltage monitoring device further includes a data interface, and the data interface is used to transmit data information acquired by the voltage monitoring device.

[0014] In some embodiments, a display device is also included; the display device is connected to the data interface and is used to display the data information detected by the voltage monitoring device.

[0015] The present invention provides a fuel cell voltage detection device, in which a conductive sheet is buried in a battery structure and connected to the positive and negative electrodes of a single-chip battery to be measured, and a voltage monitoring device is used to detect the voltage of the single-chip battery in a working state; in addition, during the test, the voltage detection device is arranged in an electric furnace, and the position of the wire is adjusted by a movable bracket so that the wires are not entangled with each other and do not contact the battery structure, thereby improving the accuracy of the test and extending the service life of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, in which:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 A schematic diagram of the structure of a fuel cell voltage detection device provided by an embodiment of the present invention;

[0019] Figure 2 A front view of a fuel cell voltage detection device provided by an embodiment of the present invention;

[0020] Figure 3 A side view of a fuel cell voltage detection device provided by an embodiment of the present invention.

[0021] In the figure:

[0022] 10: voltage monitoring equipment; 20: connection components; 30: movable bracket;

[0023] 11: signal receiving end; 12: connection end surface; 13: data interface;

[0024] 21: conductor; 22: conductive sheet;

[0025] 31: slide rail; 32: locking structure; 33: counterweight base. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] An embodiment of the present invention provides a fuel cell voltage detection device, including a voltage monitoring device, a connecting component and a movable bracket; the conductive sheet in the connecting component can be embedded in the battery structure and connected to the two poles of the single-chip battery in the battery structure, so that the voltage of the single-chip battery in the battery structure can be measured; in addition, the distance of the wires used for detection is adjusted by the movable bracket to prevent the wires from being entangled or contacting the high-temperature battery structure.

[0028] In conjunction with the accompanying drawings, various structures in the fuel cell voltage detection device provided by the embodiment of the present invention, as well as the positional relationship and connection relationship between the various structures are described in detail below.

[0029] like Figures 1 to 3 As shown, in the embodiment of the present invention, during the inspection, the conductive sheet 22 is first embedded, that is, the conductive sheet 22 is connected to the two electrodes of the single-chip battery to be inspected. Specifically:

[0030] First, determine the position of the single-chip battery to be tested according to the testing requirements, wherein all or part of the single-chip batteries can be tested; then, connect a conductive sheet 22 to the positive and negative sides of the single-chip battery.

[0031] The conductive sheets 22 are all connected to the wires 21, and the wires 21 connected to the conductive sheets 22 on both sides of the single battery are led out to the same side of the battery. Finally, the battery structure is packaged and fixed with screws to ensure that the conductive sheets 22 and the leads inside the battery structure do not move under the pressure.

[0032] By providing the conductor 21 and the conductive sheet 22 , the voltage of the independent single-chip battery in the battery structure can be detected, which can make the voltage detection more accurate.

[0033] In the embodiment of the present invention, the voltage monitoring device 10 includes a signal receiving terminal 11, one end of a wire 21 is connected to a conductive sheet 22, and the other end is connected to the signal receiving terminal 11. Each signal receiving terminal 11 includes two connection terminals, which are respectively connected to the wire 21 connected to the positive electrode and the wire 21 connected to the negative electrode of the single-chip battery.

[0034] For example, a plug is provided at the other end of the wire 21, and a socket is provided at the signal receiving end 11, and the line conduction is achieved by plugging the plug and the socket.

[0035] When the battery structure is in use, the voltage information of the single-chip battery is obtained through the voltage monitoring device 10 to achieve the purpose of detecting the single-chip battery. For example, the voltage monitoring device 10 is a voltage sensor.

[0036] In the embodiment of the present invention, the voltage detection is completed inside the electric furnace, and the voltage monitoring device 10 is set on one side of the battery structure through the movable bracket 30. Then, the position of the movable bracket 30 is adjusted to make the wire 21 straightened or tend to be straightened. After the wire 21 is in a straightened state, it can effectively avoid the wire 21 from being entangled during the test and contacting with the high-temperature sealing device of the battery structure, thereby simplifying the operation and effectively improving the effectiveness of the test, the service life of the test device, and the safety during the test. Specifically:

[0037] The voltage monitoring device 10 is arranged on the movable bracket 30 and has a set distance from the battery structure. The set distance can be understood as follows: by moving the movable bracket 30, the movable bracket 30 drives the voltage monitoring device 10 to move, so that a straight line distance is generated between the voltage monitoring device 10 and the battery structure. At this straight line distance, the wire 21 is straightened or tends to be straightened.

[0038] For example, the movable bracket 30 further includes a counterweight base 33; the counterweight base 33 has a certain mass, which can provide stable support for the movable bracket 30, and the counterweight base 33 has a certain expansion area, which is further conducive to the stable setting of the movable bracket 30. For example, the counterweight base 33 is in a rectangular shape, and its bottom surface is a placement plane for placing the movable bracket 30 on a horizontal plane, and its top surface is connected to the main structure of the movable bracket 30. When the movable bracket 30 is adjusted, the counterweight base 33 is moved.

[0039] In the embodiment of the present invention, the height of the voltage monitoring device 10 can also be adjusted to adapt to different usage scenarios and improve the versatility of the detection device. For example, the movable bracket 30 includes a slide rail 31 and a locking structure 32; the slide rail 31 is arranged along the height direction of the movable bracket 30, and the slide rail 31 is vertically connected to the top of the counterweight base 33; the voltage monitoring device 10 is slidably connected to the slide rail 31; the locking structure 32 is used to lock the voltage monitoring device 10 in a set position.

[0040] The height position required for the test is determined, and the height of the voltage monitoring device 10 is adjusted by sliding on the movable bracket 30 . After the height is adjusted to the desired position, the voltage monitoring device 10 is locked at the position using the locking structure 32 .

[0041] For example, the locking structure 32 includes a tightening bolt, and the voltage monitoring device 10 includes a sliding portion slidably connected to the slide rail 31; the tightening bolt is threadedly connected to the sliding portion and is used to tighten the slide rail 31 to limit the relative position of the sliding portion and the slide rail 31.

[0042] When the tightening bolt is not in the tightening state, the voltage monitoring device 10 can move freely relative to the slide rail 31. After adjusting to the set height, the tightening bolt is screwed so that the tightening end of the tightening bolt abuts against the slide rail 31, thereby locking the voltage monitoring device 10 in this position.

[0043] For example, the slide rail 31 is columnar, the sliding part is the shell of the voltage monitoring device 10, the shell includes a sleeve (cylindrical channel), the sleeve is sleeved on the slide rail 31; the tightening bolt is threaded with the shell, and the tightening end of the tightening bolt is located in the sleeve. For example, the slide rail 31 is cylindrical, the movable bracket 30 includes two parallel and spaced cylindrical slide rails 31, and correspondingly, the shell of the voltage monitoring device 10 includes two sleeves, and a tightening bolt is arranged in at least one sleeve. For example, the end of the tightening bolt away from the tightening end includes a screwing head, and the screwing head is located on the outside of the shell of the voltage monitoring device 10.

[0044] For example, the housing of the voltage monitoring device 10 is made of high temperature resistant material to protect the electronic components in the housing. For example, the housing of the voltage monitoring device 10 is made of ceramic, graphite or metal alloy material.

[0045] In an embodiment of the present invention, the voltage monitoring device 10 includes a connection end face 12, and a plurality of signal receiving ends 11 are arranged on the connection end face 12. For example, the connection end face 12 is located on the side of the shell; and the plurality of signal receiving ends 11 are arranged in an array on the connection end face 12. When the movable bracket 30 is in use, the connection end face 12 is used toward the battery structure, and when in use, the connection point of the wire 21 is toward the battery structure, which can reduce the bending of the wire 21; the plurality of signal receiving ends 11 are arranged at regular intervals, and when connecting the plurality of wires 21, the plurality of wires 21 and the plurality of signal receiving ends 11 are arranged regularly, which can further reduce the probability of the wire 21 being entangled.

[0046] In the embodiment of the present invention, the voltage monitoring device 10 further includes a data interface 13, which is used to transmit data information acquired by the voltage monitoring device 10. A data transmission line is connected to the data interface 13, and the other end is led out of the electric furnace, which can be used for further processing of the data information acquired by the detection device.

[0047] For example, it also includes a display device; the display device is connected to the data interface 13 and is used to display the data information detected by the voltage monitoring device 10; or, for example, it also includes a storage device, and the storage device is used to store data information.

[0048] The following describes the fuel cell voltage detection device provided by the embodiment of the present invention by taking the detection of a flat tube solid oxide fuel cell as an example.

[0049] First, the flat tube type solid oxide fuel cell includes multiple groups of single cells, and the single cells that need to be tested are determined. For example, all the single cells in the flat tube type solid oxide fuel cell are tested, so the two electrodes of each group of single cells need to be connected to the conductive sheet 22;

[0050] The connection between the conductive sheet 22 and the electrode can be welding or extrusion fastening connection. When the conductive sheet 22 is set, the flat tube type solid oxide fuel cell is in an unpackaged state. After the conductive sheet 22 is buried, the wire 21 connected to the conductive sheet 22 is led out to one side of the battery structure, and then the battery is packaged. The packaging structure can fix the conductive sheet 22.

[0051] After the packaging is completed, the flat tube type solid oxide fuel cell is fixed by using a fixing structure such as screws, and the position of the fixed battery is fixed. During the entire subsequent operation process, the flat tube type solid oxide fuel cell remains stationary.

[0052] Then, the movable bracket 30 is moved to a position on one side of the battery structure inside the electric furnace. The top bolt is loosened to release the lock between the voltage monitoring device 10 and the slide rail 31, and the height position of the voltage monitoring device 10 is adjusted along the height direction of the slide rail 31. After adjusting to the desired position, the top bolt is screwed so that the top end of the top bolt is against the slide rail 31, thereby fixing the voltage monitoring device 10 at the desired position.

[0053] The other end of the wire 21 is plugged into the signal receiving terminal 11, and multiple wires 21 are regularly plugged into multiple signal receiving terminals 11. The position adjusted by the movable bracket 30 makes the wire 21 straightened, avoiding / reducing the winding of the wire 21 and avoiding contact with the battery structure.

[0054] The data interface 13 is connected to the display device through a data transmission line. The display device is arranged outside the electric furnace, and can be used by the inspector to obtain the voltage data information of the embodiment.

[0055] After the conductive sheet 22 is embedded, the movable bracket 30 and the voltage monitoring device 10 are adjusted, the test operation can be started. The battery is heated to reach the operating temperature of the fuel cell, and hydrogen is introduced into the battery for reduction. The voltage on both sides of the single cell is transmitted to the voltage monitoring device 10 through the conductive sheet 22, and the real-time voltage on both ends of different single cells corresponding to different signal receiving terminals 11 can be viewed through an external display device.

[0056] For example, as shown in the following table, the fuel cell voltage detection device detects the voltage of two single-chip batteries in the battery structure, and measures the value every 1 second, and can obtain continuous voltage values ​​at different times in real time, where CH01 and CH02 are the two single-chip battery voltage detection channels.

[0057] Time CH01(V) CH02(V) XXXX / X / XX 19:35 1.191 1.183 XXXX / X / XX 19:35 1.19 1.18 XXXX / X / XX 19:35 1.188 1.179 XXXX / X / XX 19:35 1.187 1.179 XXXX / X / XX 19:35 1.186 1.178 XXXX / X / XX 19:35 1.185 1.177 XXXX / X / XX 19:35 1.184 1.176 XXXX / X / XX 19:35 1.183 1.175 XXXX / X / XX 19:35 1.183 1.175 XXXX / X / XX 19:35 1.182 1.174 XXXX / X / XX 19:35 1.181 1.173 XXXX / X / XX 19:35 1.18 1.173 XXXX / X / XX 19:35 1.18 1.172 XXXX / X / XX 19:35 1.179 1.172

[0058] The present invention provides a fuel cell voltage detection device, in which a conductive sheet 22 is buried in the battery structure and connected to the positive and negative electrodes of the single-chip battery to be measured, and a voltage monitoring device 10 is used to detect the voltage of the single-chip battery in a working state; in addition, during the test, the voltage detection device is arranged in an electric furnace, and the position of the wire 21 is adjusted by a movable bracket 30, so that the wire 21 is not entangled with each other and does not contact the battery structure, which can improve the accuracy of the test and extend the service life of the test device.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fuel cell voltage detection device, characterized in that: It comprises a voltage monitoring device (10) and a connection component (20); The voltage monitoring device (10) comprises a signal receiving end (11); The connection assembly (20) comprises a wire (21) and a conductive sheet (22); one end of the wire (21) is used to connect to the signal receiving end (11), and the other end is connected to the conductive sheet (22); the conductive sheet (22) is used to connect to an electrode of a single-chip battery at a set position in a battery structure, and is encapsulated in the battery structure.

2. The fuel cell voltage detection device according to claim 1, characterized in that: It also includes a movable bracket (30), wherein the movable bracket (30) is arranged in the electric furnace where the battery structure is located; The voltage monitoring device (10) is arranged on the movable support (30) and has a set distance from the battery structure.

3. The fuel cell voltage detection device according to claim 2, characterized in that: The movable bracket (30) comprises a slide rail (31) and a locking structure (32); The slide rail (31) is arranged along the height direction of the movable bracket (30), and the voltage monitoring device (10) is slidably connected to the slide rail (31); The locking structure (32) is used to lock the voltage monitoring device (10) in a set position.

4. The fuel cell voltage detection device according to claim 3, characterized in that: The locking structure (32) comprises a tightening bolt, and the voltage monitoring device (10) comprises a sliding portion slidably connected to the slide rail (31); The tightening bolt is threadedly connected to the sliding portion and is used to tighten the sliding rail (31) to limit the relative position of the sliding portion and the sliding rail (31).

5. The fuel cell voltage detection device according to claim 4, characterized in that: The slide rail (31) is columnar, the sliding portion is a shell of the voltage monitoring device (10), the shell comprises a sleeve, and the sleeve is sleeved on the slide rail (31); The tightening bolt is threadedly connected to the housing, and the tightening end of the tightening bolt is located in the sleeve.

6. The fuel cell voltage detection device according to claim 3, characterized in that: The movable support (30) further comprises a counterweight base (33); The slide rail (31) is vertically connected to the top of the counterweight base (33).

7. The fuel cell voltage detection device according to claim 5, characterized in that: The voltage monitoring device (10) comprises a connection end surface (12), and the connection end surface (12) is provided with a plurality of signal receiving ends (11).

8. The fuel cell voltage detection device according to claim 7, characterized in that: The connecting end surface (12) is located on the side surface of the shell; The plurality of signal receiving ends (11) are arranged in an array on the connection end surface (12).

9. The fuel cell voltage detection device according to claim 8, characterized in that: The voltage monitoring device (10) further comprises a data interface (13), wherein the data interface (13) is used to transmit data information acquired by the voltage monitoring device (10).

10. The fuel cell voltage detection device according to claim 9, characterized in that: Also includes display equipment; The display device is connected to the data interface (13) and is used to display the data information detected by the voltage monitoring device (10).

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