CN212569073U

CN212569073U - Voltage acquisition device and voltage acquisition system

Info

Publication number: CN212569073U
Application number: CN202021316962.5U
Authority: CN
Inventors: 甄露; 张海轮; 齐志刚
Original assignee: Beijing Xinyan Chuangneng Technology Co ltd
Current assignee: Chengdu Xinyan Hydrogen Energy Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-19
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a voltage acquisition device and voltage acquisition system relates to fuel cell technical field. The voltage acquisition device comprises a circuit board, a connecting wire, a data acquisition board and at least one pin group. The contact pin group is arranged on the circuit board, one end of the connecting wire is electrically connected with the contact pin group, the other end of the connecting wire is electrically connected with the data acquisition board, the contact pin group comprises a plurality of contact pins which are arranged in parallel and electrically connected, and the plurality of contact pins in each contact pin group are used for being inserted into a plurality of inspection interfaces of one bipolar plate in a one-to-one correspondence mode. Compared with the prior art, the utility model provides a voltage acquisition device is owing to adopted parallelly connected a plurality of contact pins that set up and the contact pin group of being connected with the data acquisition board through the connecting wire, so can be connected and carry out voltage detection to the monocell through a plurality of positions and monocell, connect reliably, even one of them position breaks down, surplus position still can normally gather monocell voltage, and data acquisition is stable.

Description

Voltage acquisition device and voltage acquisition system

Technical Field

The utility model relates to a fuel cell technical field particularly, relates to a voltage acquisition device and voltage acquisition system.

Background

At present, a fuel cell stack is generally composed of a plurality of single cells connected in series. In order to obtain performance parameters of the monocells during operation, voltage data of the monocells need to be derived and monitored through an acquisition device, however, a bipolar plate of the fuel cell is thin, the space between the monocells is small, the contact space of the detection device is quite limited, and a detection terminal capable of contacting the monocells is often connected in a virtual mode, loosened, fallen off and even broken off, so that the acquired data are unstable, and the fuel cell is judged to be in other serious faults by mistake and stops.

In view of the above, it is important to design and manufacture a stable and reliable voltage acquisition device and voltage acquisition system, especially in fuel cell applications.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a voltage acquisition device can be connected and carry out voltage detection to the monocell through a plurality of positions and monocell, connects reliably, even one of them position breaks down, remaining position still can normally gather monocell voltage, and data acquisition is stable.

Another object of the utility model is to provide a voltage acquisition system, voltage acquisition device in it can be connected and carry out voltage detection to the monocell through a plurality of positions and monocell, connects reliably, even one of them position breaks down, remaining position still can normally gather monocell voltage, and data acquisition is stable, and the practicality is strong.

The utility model is realized by adopting the following technical scheme.

The utility model provides a voltage acquisition device, includes circuit board, connecting wire, data acquisition board and at least one contact pin group, and the contact pin group sets up on the circuit board, and the one end and the contact pin group electricity of connecting wire are connected, and the other end is connected with the data acquisition board electricity, and the contact pin group is including parallelly connected a plurality of contact pins that set up and electricity is connected, and a plurality of contact pins in every contact pin group are arranged in a plurality of interfaces of patrolling and examining of inserting a bipolar plate one-to-one.

Further, the pin set includes two pins.

Further, the pins are round, oval, flat or dumbbell shaped.

Furthermore, the number of the pin groups is five, the five pin groups are arranged on the circuit board side by side, and the distance between two adjacent pin groups is equal to the distance between two adjacent bipolar plates.

Furthermore, the number of circuit boards is a plurality of, and a plurality of circuit boards all pass through the connecting wire and are connected with data acquisition board electricity.

Further, the number of the circuit boards is four, and the four circuit boards are arranged side by side.

Furthermore, one end of the connecting wire is welded on the first bonding pad of the pin group on the circuit board, and the other end of the connecting wire is welded on the second bonding pad of the data acquisition board.

Further, the connecting line is a flexible flat cable.

Further, an insulating protection layer covers the circuit board.

The utility model provides a voltage acquisition system, including fuel cell stack and foretell voltage acquisition device, this voltage acquisition device includes the circuit board, the connecting wire, data acquisition board and at least one contact pin group, fuel cell stack is including overlapping a plurality of monocells that set up, bipolar plate has in the monocell, a plurality of interfaces of patrolling and examining are seted up to bipolar plate's edge, contact pin group sets up on the circuit board, the one end and the contact pin electricity of connecting wire are connected, the other end is connected with data acquisition board electricity, contact pin group is including parallelly connected a plurality of contact pins that set up and electricity is connected, a plurality of contact pins in every contact pin group are arranged in a plurality of interfaces of patrolling and examining of inserting a bipolar.

The utility model provides a voltage acquisition device and voltage acquisition system have following beneficial effect:

the utility model provides a voltage acquisition device, contact pin group set up on the circuit board, and the one end and the contact pin group electricity of connecting wire are connected, and the other end is connected with data acquisition board electricity, and contact pin group is including parallelly connected a plurality of contact pins that set up and electricity is connected, and a plurality of contact pins in every contact pin group are arranged in a plurality of interfaces of patrolling and examining that insert a bipolar plate one-to-one. Compared with the prior art, the utility model provides a voltage acquisition device is owing to adopted parallelly connected a plurality of contact pins that set up and the contact pin group of being connected with the data acquisition board through the connecting wire, so can be connected and carry out voltage detection to the monocell through a plurality of positions and monocell, connect reliably, even one of them position breaks down, surplus position still can normally gather monocell voltage, and data acquisition is stable.

The utility model provides a voltage acquisition system, voltage acquisition device in it can be connected and carry out voltage detection to the monocell through a plurality of positions and monocell, connects reliably, even one of them position breaks down, remaining position still can normally gather monocell voltage, and data acquisition is stable, and the practicality is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a voltage acquisition system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a voltage acquisition device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a view angle of a thimble group in the voltage acquisition device according to an embodiment of the present invention;

fig. 4 is a schematic structural view of another view angle of the thimble group in the voltage acquisition device according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a viewing angle at which the voltage collecting device according to an embodiment of the present invention is connected to a bipolar plate;

fig. 6 is a schematic structural diagram of another view angle at which the voltage collecting device according to the embodiment of the present invention is connected to a bipolar plate.

Icon: 10-a voltage acquisition system; 100-a voltage acquisition device; 110-a circuit board; 120-connecting lines; 130-data acquisition board; 140-pin insertion; 150-a pin group; 160-first pad; 200-a fuel cell stack; 210-a single cell; 211-bipolar plate; 212-a patrol interface; 220-stack end plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

Examples

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a voltage collecting system 10 for detecting the voltage of a single cell 210 in a fuel cell stack 200 is provided in an embodiment of the present invention. The voltage acquisition device 100 in the battery can be connected with the single battery 210 through a plurality of point positions and can detect the voltage of the single battery 210, the connection is reliable, the situations of virtual connection, looseness, falling and the like are avoided, the data acquisition is stable, and the practicability is high.

It should be noted that the voltage acquisition system 10 includes a fuel cell stack 200 and a voltage acquisition device 100. The fuel cell stack 200 has a plurality of single cells 210 therein, and the voltage acquisition device 100 can detect the voltage of each single cell 210 to obtain the voltage data of each single cell 210, so that the data acquisition is stable and reliable.

In the present embodiment, the fuel cell stack 200 includes two stack end plates 220 and a plurality of single cells 210. The plurality of cells 210 are stacked, the stack end plate 220 is disposed parallel to the cells 210, the plurality of cells 210 are sandwiched between the two stack end plates 220, the stack end plate 220 can provide a pressing force to the plurality of cells 210, and the stack end plate 220 can shield and protect the plurality of cells 210 to prevent the cells 210 from being damaged by impact. Specifically, the single cell 210 has a bipolar plate 211, the edge of the bipolar plate 211 is provided with a plurality of inspection interfaces 212, and the voltage acquisition device 100 can perform voltage detection on the single cell 210 through the plurality of inspection interfaces 212, so as to realize multi-point voltage detection on each single cell and ensure stability and reliability of acquired data.

The voltage acquisition device 100 includes a circuit board 110, a connection wire 120, a data acquisition board 130, and at least one pin group 150. The pin group 150 is disposed on the circuit board 110, one end of the connection line 120 is electrically connected to the pin group 150, the other end is electrically connected to the data acquisition board 130, and the data acquisition board 130 is used for acquiring voltage data. The pin group 150 comprises a plurality of pins 140 which are arranged in parallel and electrically connected, the plurality of pins 140 in each pin group 150 are used for being inserted into the plurality of routing inspection interfaces 212 of one bipolar plate 211 in a one-to-one correspondence manner, and each pin group 150 can perform multi-point voltage detection on one bipolar plate 211. Specifically, the pins 140 are soldered on the circuit board 110 to improve the connection strength between the pins 140 and the circuit board 110, and prevent the pins 140 from being separated from the circuit board 110.

It should be noted that, when voltage detection needs to be performed on the single cell 210, the plurality of pins 140 in one pin group 150 on the circuit board 110 are inserted into the plurality of inspection interfaces 212 on the bipolar plate 211 in the single cell 210 in a one-to-one correspondence manner, in this process, because the plurality of pins 140 in one pin group 150 are arranged in parallel, when the plurality of pins 140 in one pin group 150 are inserted into the plurality of inspection sockets on one bipolar plate 211 in a one-to-one correspondence manner, each pin 140 can be electrically connected with the bipolar plate 211, and each pin 140 can measure the voltage of the single cell 210. In this case, if one of the pins 140 has a problem or one pin 140 has a problem electrically connected to the bipolar plate 211, the other pins 140 can still measure the voltage of the cell 210, thus greatly improving the reliability of voltage detection of the cell 210; moreover, because the pins 140 in one pin group 150 on the circuit board 110 are simultaneously inserted into the inspection interfaces 212 on one bipolar plate 211, the connection between the circuit board 110 and the bipolar plate 211 is more reliable, and the situations of virtual connection, looseness, falling off and the like are avoided.

In this embodiment, a plurality of pins 140 in one pin group 150 are arranged side by side, a plurality of inspection sockets on one bipolar plate 211 are arranged side by side, and the position of each pin 140 corresponds to the position of one inspection socket, so as to facilitate plugging and unplugging and voltage detection.

In this embodiment, one pin group 150 includes two pins 140, the two pins 140 are disposed in parallel and are electrically connected to the connection line 120, each pin 140 in one pin group 150 can detect the voltage of one cell 210, and when one pin 140 cannot accurately detect the voltage of the cell 210, the voltage of the cell 210 can be detected through the other pin 140, so as to ensure stable and reliable voltage detection of the cell 210. However, the number of the pins 140 included in one pin group 150 may be three or four in other embodiments, and the number of the pins 140 included in one pin group 150 is not particularly limited.

It is noted that the shape of the pins 140 matches the shape of the routing interface 212 on the bipolar plate 211. In this embodiment, the pins 140 are round, oval, flat or dumbbell-shaped, but the invention is not limited thereto, and in other embodiments, the pins 140 may have other shapes.

In this embodiment, the number of the pin groups 150 on one circuit board 110 is five, five pin groups 150 are arranged on the circuit board 110 side by side, each pin group 150 is used for voltage detection of one single cell 210, and five pin groups 150 on one circuit board 110 can detect voltages of five single cells 210. However, the number of the pin groups 150 disposed on one circuit board 110 may be four or six, and the number of the pin groups 150 disposed on one circuit board 110 is not particularly limited.

It should be noted that the number of the circuit boards 110 is plural, the circuit boards 110 are arranged on the stack side by side, and the circuit boards 110 are all electrically connected to the data acquisition board 130 through the connection wires 120. In this embodiment, the number of the circuit boards 110 is four, and four circuit boards 110 are arranged side by side, but the invention is not limited thereto, and in other embodiments, the number of the circuit boards 110 may be three, or may also be five, and the number of the circuit boards 110 is not particularly limited.

In this embodiment, one end of the connection wire 120 is soldered to the first pad 160 of the pin set 150 on the circuit board 110, and the other end of the connection wire 120 is soldered to the second pad of the data acquisition board 130, so as to improve the connection strength between the connection wire 120 and the circuit board 110 and the data acquisition board 130, and prevent the connection wire 120 from falling off from the circuit board 110 or the data acquisition board 130. Specifically, the connecting wires 120 are flexible flat cables, and the number and the distance between the connecting wires 120 can be selected at will, so that the connection is more convenient, the size of the voltage acquisition device 100 is reduced, the production cost is reduced, and the production efficiency is improved.

In this embodiment, the material of the body of the circuit board 110 is an insulator, such as plastic. An insulating protective layer (not shown) is disposed on the circuit board 110 to prevent foreign objects from entering the circuit board 110 and causing short circuits between the pin groups 150.

The embodiment of the utility model provides a voltage acquisition device 100, contact pin group 150 sets up on circuit board 110, and the one end and the contact pin group 150 electricity of connecting wire 120 are connected, and the other end is connected with data acquisition board 130 electricity, and contact pin group 150 is including parallelly connected a plurality of contact pins 140 that set up and electricity are connected, and a plurality of contact pins 140 in every contact pin group 150 are arranged in a plurality of interfaces 212 of patrolling and examining that insert a bipolar plate 211 one-to-one. Compared with the prior art, the utility model provides a voltage acquisition device 100 is owing to adopted a plurality of contact pins 140 of parallelly connected setting and through the contact pin group 150 that connecting wire 120 and data acquisition board 130 are connected, so can be connected and carry out voltage detection to monocell 210 through a plurality of positions and monocell 210, connect reliably, even one of them position breaks down, remaining position still can normally gather monocell 210 voltage, and data acquisition is stable.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a voltage acquisition device, its characterized in that, includes circuit board (110), connecting wire (120), data acquisition board (130) and at least one contact pin group (150), contact pin group (150) set up in on circuit board (110), the one end of connecting wire (120) with contact pin group (150) electricity is connected, the other end with data acquisition board (130) electricity is connected, contact pin group (150) are including parallelly connected setting and a plurality of electricity connect contact pin (140), every a plurality of in the contact pin group (150) contact pin (140) are arranged in a plurality of interfaces of patrolling and examining (212) that insert a bipolar plate (211) one-to-one.

2. The voltage acquisition device of claim 1, wherein the pin set (150) comprises two of the pins (140).

3. The voltage acquisition device according to claim 1, characterized in that the pins (140) are round, oval, flat or dumbbell-shaped.

4. The voltage collecting device according to claim 1, wherein the number of the pin groups (150) is five, the five pin groups (150) are arranged side by side on the circuit board (110), and the distance between two adjacent pin groups (150) is equal to the distance between two adjacent bipolar plates (211).

5. The voltage acquisition device according to claim 1, wherein the number of the circuit boards (110) is plural, and the plural circuit boards (110) are electrically connected with the data acquisition board (130) through the connection line (120).

6. The voltage acquisition device according to claim 5, characterized in that the number of said circuit boards (110) is four, four of said circuit boards (110) being arranged side by side.

7. The voltage acquisition device according to claim 1, wherein one end of the connection wire (120) is soldered to a first pad (160) of the pin group (150) on the circuit board (110), and the other end of the connection wire (120) is soldered to a second pad of the data acquisition board (130).

8. The voltage acquisition device according to claim 1, characterized in that said connection line (120) is a flexible flat cable.

9. The voltage acquisition device according to claim 1, characterized in that the circuit board (110) is covered and provided with an insulating protection layer.

10. A voltage collecting system, comprising a fuel cell stack (200) and the voltage collecting device according to any one of claims 1 to 9, wherein the fuel cell stack (200) comprises a plurality of unit cells (210) arranged in an overlapping manner, a bipolar plate (211) is arranged in each unit cell (210), and a plurality of inspection interfaces (212) are arranged on the edge of the bipolar plate (211).