阅读说明：本技术 双极板机构与燃料电池系统 (Bipolar plate mechanism and fuel cell system ) 是由 冯春平 曹桂军 李鹏程 王中红 薛文闯 文龙 刘青斌 罗森源 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种双极板机构与燃料电池,双极板机构包括包括极板组件和限位件,极板组件限定有CVM插槽,用于主体部的容纳,CVM插槽具有相对设置的第一侧部与第二侧部,第一侧部设置有第二限位部,第二限位部5能够与第一限位部嵌设配合；其中,所述CVM插槽沿预设方向依次分为定位区与预留区,所述预设方向为自所述第一侧部到所述第二侧部的方向,当主体部位于定位区,第二限位部与第一限位部嵌设配合,当主体部沿预设方向向预留区运动时,第一限位部能够与第二限位部相脱离；限位件与极板组件装配连接,限位件能够与主体部朝向预留区的一侧抵接连接。通过采用上述方案,插针在限位件的作用下,从而使第一限位部与第二限位部保持嵌设配合,从而使CVM插针与CVM插槽稳固连接。(The invention discloses a bipolar plate mechanism and a fuel cell, wherein the bipolar plate mechanism comprises a polar plate assembly and a limiting piece, wherein the polar plate assembly is limited with a CVM slot for accommodating a main body part, the CVM slot is provided with a first side part and a second side part which are oppositely arranged, the first side part is provided with a second limiting part, and the second limiting part 5 can be embedded and matched with the first limiting part; the CVM slot is sequentially divided into a positioning area and a reserved area along a preset direction, the preset direction is from the first side part to the second side part, when the main body part is positioned in the positioning area, the second limiting part is embedded and matched with the first limiting part, and when the main body part moves to the reserved area along the preset direction, the first limiting part can be separated from the second limiting part; the locating part and polar plate subassembly be assembled between/be connected, the locating part can be connected with the main part one side butt towards the reservation district. Through adopting above-mentioned scheme, the contact pin is under the effect of locating part to make first spacing portion and the spacing portion of second keep inlaying and establish the cooperation, thereby make CVM contact pin and CVM slot firm connection.)

1. The double-pole plate mechanism is connected with the CVM pin, and is characterized in that the CVM pin comprises a main body part and a first limiting part, and the first limiting part is arranged on the side part of the main body part; the bipolar plate mechanism includes:

the pole plate assembly is limited with a CVM slot and used for accommodating the main body part, the CVM slot is provided with a first side part and a second side part which are arranged oppositely, the first side part is provided with a second limiting part, and the second limiting part can be embedded and matched with the first limiting part;

the CVM slot is sequentially divided into a positioning area and a reserved area along a preset direction, and the preset direction is from the first side to the second side; when the main body part is positioned in the positioning area, the second limiting part is embedded and matched with the first limiting part, and when the main body part moves to the reserved area along the preset direction, the first limiting part can be separated from the second limiting part;

the limiting part is assembled and connected with the pole plate assembly, and the limiting part can be connected with one side, facing the reserved area, of the main body part in an abutting mode.

2. The bipolar plate mechanism of claim 1 wherein said retainer is snap fit with said plate assembly.

3. The bipolar plate mechanism of claim 1 wherein said retainer is an interference fit with said pocket.

4. The bipolar plate mechanism of claim 1 wherein said retainer is adhesively attached to the exterior of the plate assembly.

5. The bipolar plate mechanism of claim 4, wherein the limiting member comprises a supporting portion and a connecting portion, the supporting portion is disposed in the reserved area and is used for being connected with a side portion of the main body portion facing the reserved area in an abutting manner, and the connecting portion is attached to the outside of the bipolar plate assembly and is connected with the outside of the bipolar plate assembly in an adhering manner.

6. The bipolar plate mechanism of claim 5 wherein said retaining portion is an interference fit with said reserved area.

7. The bipolar plate mechanism as claimed in claim 1, wherein the second stopper has a plurality of second stoppers, and the plurality of second stoppers are sequentially spaced apart in a depth direction of the first side portion.

8. The bipolar plate mechanism of claim 1 wherein said plate assembly comprises an anode plate and a cathode plate, said anode plate and said cathode plate are in abutting connection, said CVM slot is formed between said anode plate and said cathode plate.

9. A fuel cell system, characterized by comprising:

-a bipolar plate arrangement according to any one of claims 1 to 8;

a main body, the bipolar plate mechanism being disposed on the main body;

and the CVM contact pin is in plug connection with the positioning area of the CVM slot.

10. The fuel cell system as claimed in claim 9, wherein the CVM pin has a plurality, the fuel cell system further comprising a connector to which the plurality of CVM pins are fittingly connected.

Technical Field

The invention relates to the technical field of batteries, in particular to a bipolar plate mechanism and a fuel cell system.

Background

In the related technology, a fuel cell system consists of a plurality of bipolar plates of an electric pile, a membrane electrode and the like, and in order to inspect the voltage of a single fuel cell, a CVM slot is required to be arranged on the membrane electrode, and an inspection instrument is externally connected for detection. In a fuel cell system mounted on a vehicle, the cell stack is subjected to vibrations due to various road conditions as it is used over the years, and it is important to prevent the CVM pins from jumping. However, the CVM slots of the bipolar plates of various membrane electrodes in the current market are different, and are regular rectangular, circular or elliptical, and the CVM pins are inserted and fixed in an interference fit manner. Due to the size, the material and the like of the contact pin, the interference fit between the contact pin and the bipolar plate is not stable, and the contact pin is easy to separate from the bipolar plate after being carried on a vehicle along with the use of the contact pin over the years.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bipolar plate mechanism which can ensure that a CVM pin is stably inserted into a CVM slot.

The invention also provides a fuel cell system with the bipolar plate mechanism.

According to the bipolar plate mechanism provided by the embodiment of the invention, the CVM pin comprises a main body part and a first limiting part, and the first limiting part is arranged on the side part of the main body part; the bipolar plate mechanism includes:

the pole plate assembly is limited with a CVM slot and used for accommodating the main body part, the CVM slot is provided with a first side part and a second side part which are arranged oppositely, the first side part is provided with a second limiting part, and the second limiting part can be embedded and matched with the first limiting part;

the CVM slot is sequentially divided into a positioning area and a reserved area along a preset direction, the preset direction is from the first side part to the second side part, when the main body part is positioned in the positioning area, the second limiting part is in embedded fit with the first limiting part, and when the main body part moves to the reserved area along the preset direction, the first limiting part can be separated from the second limiting part;

the limiting part is assembled and connected with the pole plate assembly, and the limiting part can be connected with one side, facing the reserved area, of the main body part in an abutting mode.

The bipolar plate mechanism provided by the embodiment of the invention has at least the following beneficial effects: in the CVM pin mounting stage, firstly, the position of the main body part is adjusted, the main body part moves into the CVM slot along the axial direction of the CVM slot, and at the moment, because the projection of the first limiting part along the axial direction of the CVM slot is staggered with the projection of the second limiting part along the axial direction of the CVM slot, the main body part does not interfere with the CVM slot when sliding along the CVM slot until the main body part slides to a preset position, and the first limiting part and the second limiting part are embedded and arranged in a relative state. Then, the main body part is moved to a positioning area, and the first limiting part and the second limiting part are embedded and matched; and finally, the limiting part is assembled and connected with the pole plate assembly and is connected with the side part of the main body part facing the reserved area in an abutting mode. It is thus clear that the main part is under the effect of locating part, and the main part keeps in the locating area to make first spacing portion and the spacing portion of second keep inlaying and establishing the cooperation, and then make the main part peg graft in CVM slot firmly, the CVM contact pin is connected with the steady connection of polar plate subassembly.

According to some embodiments of the invention, the limiting member is connected with the pole plate assembly in a clamping manner.

According to some embodiments of the invention, the stopper is in interference fit with the reserved area.

According to some embodiments of the invention, the stop is adhesively connected to the exterior of the pole plate assembly.

According to some embodiments of the present invention, the limiting member includes an abutting portion and a connecting portion, the abutting portion is disposed in the reserved area and is used for abutting and connecting with a side portion of the main body portion facing the reserved area, and the connecting portion is attached to an exterior of the pole plate assembly and is adhesively connected with the exterior of the pole plate assembly.

According to some embodiments of the invention, the holding portion is in interference fit with the reserved area.

According to some embodiments of the invention, the second limiting portion has a plurality of second limiting portions, and the plurality of second limiting portions are sequentially arranged at intervals along the depth direction of the first side portion.

According to some embodiments of the invention, the pole plate assembly comprises an anode plate and a cathode plate, the anode plate and the cathode plate are in fit connection, and the CVM slot is formed between the anode plate and the cathode plate.

A fuel cell system according to an embodiment of the present invention includes: the bipolar plate mechanism described above; the bipolar plate mechanism is arranged on the main body; and the CVM contact pin is in plug-in fit with the positioning area of the CVM slot.

The fuel cell system according to the embodiment of the invention has at least the following beneficial effects: the fuel cell adopts above-mentioned bipolar plate mechanism, and the CVM contact pin is connected firmly with bipolar plate, so, fuel cell system carries on the car after, even the long-time operation of car, also can guarantee the steadiness of CVM contact pin, and then guarantees the monitoring fuel cell's that the CVM contact pin can be normal electric energy condition.

According to some embodiments of the present invention, the CVM pin has a plurality, and the fuel cell system further includes a connector to which the plurality of CVM pins are fittingly connected.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic view of a partial structure of a fuel cell system according to an embodiment of the present invention;

fig. 2 is an assembly diagram of a pole plate assembly, a CVM pin, and a limiting member in a fuel cell system according to an embodiment of the present invention;

fig. 3 to 6 are schematic views illustrating an assembly process of a pole plate assembly, a CVM pin and a stopper in a fuel cell system according to the present invention;

fig. 7 is an expanded schematic view of a pole plate assembly according to an embodiment of the invention.

Reference numerals:

the bipolar plate mechanism 100, the plate assembly 110, the anode plate 111, the cathode plate 112, the CVM slot 113, the first side portion 1131, the second side portion 1132, the positioning region 1133, the reserved region 1134, the second limiting portion 1135, the limiting member 120, the abutting portion 121, and the connecting portion 122;

CVM pin 200, main body 210, and first stopper 220.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of the terms is one or more, the meaning of a plurality of the terms is two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

According to the present invention, referring to fig. 1 and 2, the bipolar plate mechanism 100 can be electrically connected to a CVM pin 200, the CVM pin 200 includes a main body portion 210 and a first position-limiting portion 220, the first position-limiting portion 220 is disposed at a side portion of the main body portion 210; the bipolar plate mechanism 100 includes a plate assembly 110 and a limiting member 120, the plate assembly 110 defines a CVM socket 113 for accommodating the main body portion 210, the CVM socket 113 has a first side portion 1131 and a second side portion 1132 which are oppositely arranged, the first side portion 1131 is provided with a second limiting portion 1135, and the second limiting portion 1135 can be embedded and matched with the first limiting portion 220; the CVM socket 113 is sequentially divided into a positioning area 1133 and a reserved area 1134 along a preset direction, where the preset direction is a direction from the first side portion 1131 to the second side portion 1132; when the main body 210 is located in the positioning region 1133, the second limiting portion 1135 is embedded and matched with the first limiting portion 220, and when the main body 210 moves towards the reserved region 1134 along the preset direction, the first limiting portion 220 can be separated from the second limiting portion 1135; the stopper 120 is assembled and connected to the pole plate assembly 110, and the stopper 120 can be connected to the main body portion 210 in an abutting manner on a side facing the reserved area 1134.

By adopting the above scheme, in the stage of mounting the CVM pin 200, referring to fig. 2 to 6, first, the position of the main body portion 210 is adjusted, the main body portion 210 moves into the CVM socket 113 along the depth direction of the CVM socket 113, and at this time, since the projection of the first position-limiting portion 220 along the depth direction of the CVM socket 113 is staggered from the projection of the second position-limiting portion 1135 along the depth direction of the CVM socket 113, when the main body portion 210 slides along the CVM socket 113, the main body portion 210 does not interfere with the CVM socket 113 until the main body portion 210 slides to a predetermined position, and the first position-limiting portion 220 and the second position-limiting portion 1135 are in a relative state. Then, the main body 210 is slid along the predetermined direction until the main body 210 moves to the positioning region 1133, at this time, the first side portion 1131 is connected in an abutting manner, and the first position-limiting portion 220 is engaged with the second position-limiting portion 1135. Finally, the limiting member 120 is assembled on the connecting plate assembly 110 and connected to the main body 210 in an abutting manner toward the side of the reserved area 1134. As can be seen from the above, under the action of the limiting element 120, the main body 210 is kept in the positioning region 1133, so that the first limiting portion 220 and the second limiting portion 1135 are kept in an embedded fit, the main body 210 is stably inserted into the CVM socket 113, and the CVM pin 200 is stably connected to the plate assembly 110.

In addition, when the maintenance or replacement of the CVM pin 200 is required, the maintenance worker only needs to conveniently remove the stoppers 120, thereby conveniently removing the CVM pin 200.

In some embodiments, referring to fig. 1 and fig. 2, the first position-limiting portion 220 is a protrusion disposed on a side wall of the main body portion 210, the second position-limiting portion 1135 is a groove disposed on the first side portion 1131, when the main body portion 210 is inserted into the positioning region 1133, the protrusion and the groove are engaged with each other, so as to prevent the main body portion 210 from sliding away from the opening of the positioning region 1133, and the CVM pin 200 is stably connected to the pole plate assembly 110; instead, the first limiting portion 220 is a groove formed in the side wall of the main body portion 210, the second limiting portion 1135 is a protrusion disposed on the first side portion 1131, and when the main body portion 210 is inserted into the positioning region 1133, the protrusion and the groove are fitted together, so that the main body portion 210 is prevented from sliding away from the opening of the positioning region 1133, and the CVM pin 200 is stably connected to the pole plate assembly 110.

In some embodiments, the position-limiting member 120 is connected to the pole plate assembly 110 in a snap-fit manner (not shown), such that the position-limiting member 120 is fixedly mounted to the pole plate assembly 110, thereby achieving a stable abutting between the position-limiting member 120 and the main body portion 210, and further preventing the main body portion 210 from moving toward the reserved area 1134, such that the first position-limiting portion 220 and the second position-limiting portion 1135 are kept in an embedded fit, and the CVM pin 200 is stably connected to the pole plate assembly 110. The limiting member 120 is embedded in the reserved area 1134 and is connected with the sidewall of the reserved area 1134 in a clamping manner, so that the limiting member 120 is installed; or, the pole plate assembly 110 is provided with a mounting hole communicated with the reserved area 1134, the limiting member 120 is connected with the mounting hole in a clamping manner, and the end of the limiting member 120 extends to the reserved area 1134, so as to be connected with the main body portion 210 in an abutting manner. It can be understood that the limiting member 120 is connected to the plate assembly 110 in a clamping manner, and the limiting member 120 is convenient to mount and dismount, thereby facilitating the mounting and dismounting of the CVM pin 200.

Instead of the limiting member 120 being connected to the electrode plate assembly 110 in a snap-fit manner, in some embodiments, the limiting member 120 is embedded in the reserved area 1134 and is in interference fit with the reserved area 1134, so that the limiting member 120 is fixed in the reserved area 1134, and the limiting member 120 is stably connected to the main body portion 210 in an abutting manner, so that the first limiting portion 220 and the second limiting portion 1135 are kept in an embedded fit; or, the pole plate assembly 110 is provided with a mounting hole communicating with the reserved area 1134, the limiting member 120 is in interference fit with the mounting hole, and the end of the limiting member 120 extends to the reserved area 1134, so as to be connected to the main body portion 210 in an abutting manner, and further prevent the main body portion 210 from moving toward the reserved area 1134, so that the first limiting portion 220 and the second limiting portion 1135 are kept in an embedded fit.

Instead of the limiting member 120 being connected to the plate assembly 110 in a snap-fit manner, in some embodiments, the limiting member 120 includes a supporting portion 121 and a connecting portion 122, the supporting portion 121 is embedded in the reserved area 1134 and is connected to the side surface of the main body portion 210 close to the reserved area 1134 in an abutting manner, and the connecting portion 122 is located outside the plate assembly 110 and is connected to the outside of the plate assembly 110 in an adhesive manner, so that the limiting member 120 and the plate assembly 110 are fixedly connected. As can be seen from the above, the connecting portion 122 is adhesively connected to the electrode plate assembly 110, so as to ensure the fastening connection between the limiting member 120 and the electrode plate assembly 110, so that the abutting portion 121 is stably abutted against the main body portion 210, and further the main body portion 210 is prevented from moving toward the reserved area 1134, so that the first limiting portion 220 and the second limiting portion 1135 are kept in an embedded fit.

It can be understood that the adhesive layer between the limiting member 120 and the plate assembly 110 is located outside the plate assembly 110, and the adhesive layer is conveniently scraped.

Further, the main body portion 210 and the reserved area 1134 are in interference fit, so that the fastening performance between the main body portion 210 and the reserved area 1134 is strengthened, and further the fastening performance between the limiting member 120 and the electrode plate assembly 110 is strengthened, in this way, the main body portion 210 is fastened and located in the positioning area 1133 under the effect of the limiting member 120, and thus, the CVM pin 200 and the CVM slot 113 are stably connected in an inserted manner.

In some embodiments, the first position-limiting portion 220 has a plurality of first position-limiting portions 220, and the plurality of first position-limiting portions 220 are sequentially arranged on the sidewall of the main body portion 210 along the axial direction of the main body portion 210; meanwhile, the number of the second limiting portions 1135 is the same as that of the first limiting portions 220, a plurality of the second limiting portions 1135 are sequentially arranged along the depth direction of the first side portion 1131, and one first limiting portion 220 is embedded and matched with one second limiting portion 1135; therefore, the CVM pin 200 is restricted by the second limiting portions 1135, so as to prevent the main body 210 from moving toward the opening of the positioning area 1133, and further ensure the fastening connection between the CVM pin 200 and the CVM socket 113.

In some embodiments, the plate assembly 110 includes an anode plate 111 and a cathode plate 112, a front surface of the anode plate 111 is adhered to a front surface of the cathode plate 112, and the CVM slot 113 is formed between the anode plate 111 and the cathode plate 112, that is, the front surface of the anode plate 111 is provided with a mounting groove communicated with an edge of the anode plate 111, the front surface of the cathode plate 112 is provided with a mounting groove communicated with an edge of the anode plate 111, and the two mounting grooves are oppositely arranged, so as to form the CVM slot 113. By adopting the above scheme, when the pole plate assembly 110 is assembled, the CVM pin 200 and the stopper 120 may be first mounted in the mounting groove of the anode plate 111 or the cathode plate 112, and then the anode plate 111 and the cathode plate are bonded and connected. It should be noted that, when the anode plate 111 and the cathode plate 112 are assembled, the position-limiting member 120 is embedded in the two mounting slots at the same time, so that the anode plate 111 and the cathode plate 112 are positioned, and the accurate mounting between the anode plate 111 and the cathode plate 112 is ensured.

According to a second aspect of the present invention, a fuel cell system is disclosed, which comprises a plurality of bipolar plate mechanisms 100 as described above, and further comprises a body and CVM pins 200, wherein the bipolar plate mechanisms 100 are mounted on the body, thereby forming a fuel cell capable of generating electric energy; meanwhile, the CVM pin 200 is inserted into the CVM slot 113 of the electrode plate assembly 110, and the CVM pin 200 is used for detecting the power parameter condition of the fuel cell. Wherein, the fuel cell system adopts above-mentioned bipolar plate mechanism 100, and CVM contact pin 200 is connected with polar plate subassembly 110 is firm, so, after the fuel cell system carried the car, even the car is long-time to be moved, also can guarantee CVM contact pin 200's steadiness, and then guarantee that CVM contact pin 200 can normally monitor fuel cell's the electric energy condition.

Furthermore, the number of the CVM pins 200 is multiple, the number of the plate assemblies 110 is the same as that of the CVM pins 200, and the multiple sockets are respectively connected with the corresponding bipolar plate mechanisms 100 in an inserting manner; the fuel cell system further includes a connector to which the plurality of CVM pins 200 are fittingly connected, so that an assembler controls one connector to control the plurality of CVM pins 200, thereby facilitating the simultaneous insertion connection of the plurality of CVM pins 200 with the plurality of electrode plate assemblies 110.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.