阅读说明：本技术 一种燃料电池电堆用电流收集板及其制备工艺 (A kind of fuel cell pile current collecting board element and its preparation process ) 是由 黄关磊 王海涛 谢登印 王成 刘扬 顾嘉楠 陈纪院 单智勇 胡新乐 于 2019-09-27 设计创作，主要内容包括：本发明涉及一种燃料电池电堆用电流收集板及其制备工艺,该电流收集板包括一体成型的收集板本体和导电条,所述收集板本体与电堆单电池连接,所述导电条与所述收集板本体之间呈90度并作为电流收集板的引脚引出至电池外壳的外侧,所述收集板本体与导电条上涂覆有高导电耐磨涂层,在所述导电条上套设有高绝缘的热缩管。在其制备工艺中通过抛丸工序使得电流收集板的耐磨性及整体强度得到提高,而且采用的Sn-Ni双涂层,能够防止单涂层在抛丸加工中涂层损坏导致导电性下降,如此能够保证稳定且高效的采集电流。(The present invention relates to a kind of fuel cell pile current collecting board element and its preparation processes, the current collecting board element includes integrally formed collecting board ontology and conductive bar, the collecting board ontology is connect with pile monocell, it is in the outside that 90 degree and the pin as current collecting board element lead to battery case between the conductive bar and the collecting board ontology, it is coated with highly conductive wear-resistant coating on the collecting board ontology and conductive bar, the heat-shrink tube of high insulation is arranged on the conductive bar.By ball blast process the wearability of current collecting board element and integral strength are improved in its preparation process, and the bis- coatings of Sn-Ni used, it can prevent single coating from causing electric conductivity to decline in ball blast processing floating coat damage, can so guarantee to stablize and efficiently acquire electric current.)

1. a kind of fuel cell pile current collecting board element, which is characterized in that including integrally formed collecting board ontology and conduction Item, the collecting board ontology are connect with pile monocell, are in 90 degree and conduct between the conductive bar and the collecting board ontology The pin of current collecting board element leads to the outside of battery case, the collecting board ontology be coated on conductive bar it is highly conductive wear-resisting Coating is arranged with the heat-shrink tube of high insulation on the conductive bar.

2. fuel cell pile current collecting board element according to claim 1, which is characterized in that the collecting board ontology with Conductive bar is formed by fine copper plate integrated punching.

3. fuel cell pile current collecting board element according to claim 1 or 2, which is characterized in that described highly conductive resistance to Mill coating is Sn-Ni coating, wherein Sn coating with a thickness of 5 ~ 10 μm, Ni coating with a thickness of 10 ~ 15 μm.

4. a kind of preparation process of fuel cell pile current collecting board element, current collecting board element includes integrally formed collecting board sheet Body and conductive bar, the collecting board ontology are connect with pile monocell, are in 90 between the conductive bar and the collecting board ontology Degree and the pin as current collecting board element lead to the outside of battery case, are coated with height on the collecting board ontology and conductive bar Conductive wear-resistant coating, the highly conductive wear-resistant coating are Sn-Ni coating, and the process of this current collecting board element includes:

Carrying out punching press to the fine copper plate with a thickness of 0.5mm makes machine-shaping go out collecting board ontology and conductive bar；

The surface of collecting board ontology and conductive bar spray Sn coating, Sn coating with a thickness of 15 ~ 25 μm, then pass through organdy Small-power ball blast is carried out to the collecting board ontology and conductive bar that spray upper Sn coating, so that Sn coating surface has pit, until Sn coating ball blast is to stopping after 5 ~ 10 μm；

The spraying of Ni coating is carried out on Sn coating again, the coating thickness of the Ni coating is 10 ~ 15 μm；

Finally, drying discharging.

5. the preparation process of fuel cell pile current collecting board element according to claim 4, which is characterized in that spraying Complete Sn coating and after air-drying, is arranged the heat-shrink tube of the high insulation of molding, for protecting the conduction made of copper on the conductive bar Item prevents short circuit.

Technical field

The present invention relates to a kind of fuel cell pile current collecting board element and its preparation processes.

Background technique

Pile current acquisition pole plate in fuel cell pile is one of key fitment, and electric conductivity largely effects on combustion Expect the overall output efficiency of battery.Because fuel cell pile generates, electric current is larger, and voltage is higher, and environment temperature is higher, and humidity is big, So the acquisition stability of electric current and acquisition ratio directly determine the overall power of pile.Suitable dimension is made using fine copper plate Current collecting board element is soldered at pile by current collecting board element, band copper conductive bar, when use, but resistance increases after welding, intensity It reduces, easy heat production consumes electric energy, easy to crack.

How reliably to improve the collection efficiency of current collecting board element is current technical problem urgently to be solved.

Summary of the invention

The invention aims to provide a kind of fuel cell pile current collecting board element and its preparation process, can be improved The current acquisition efficiency of current collecting board element improves functional reliability, and service life can also effectively improve.

In order to achieve the above objectives, the technical solution adopted by the present invention is that:

The present invention provides a kind of fuel cell pile current collecting board elements, including integrally formed collecting board ontology and conduction Item, the collecting board ontology are connect with pile monocell, are in 90 degree and conduct between the conductive bar and the collecting board ontology The pin of current collecting board element leads to the outside of battery case, the collecting board ontology be coated on conductive bar it is highly conductive wear-resisting Coating is arranged with the heat-shrink tube of high insulation on the conductive bar.

Further, the collecting board ontology and conductive bar are formed by fine copper plate integrated punching.

Further, the highly conductive wear-resistant coating is Sn-Ni coating, wherein Sn coating with a thickness of 5 ~ 10 μm, Ni Coating with a thickness of 10 ~ 15 μm.

The another aspect applied according to the present invention additionally provides a kind of preparation work of fuel cell pile current collecting board element Skill, current collecting board element include integrally formed collecting board ontology and conductive bar, and the collecting board ontology is connect with pile monocell, Between the conductive bar and the collecting board ontology in 90 degree and the pin as current collecting board element lead to battery case outside Highly conductive wear-resistant coating is coated on side, the collecting board ontology and conductive bar, the highly conductive wear-resistant coating is Sn-Ni painting Layer, the process of this current collecting board element include:

Carrying out punching press to the fine copper plate with a thickness of 0.5mm makes machine-shaping go out collecting board ontology and conductive bar；

The surface of collecting board ontology and conductive bar spray Sn coating, Sn coating with a thickness of 15 ~ 25 μm, then pass through organdy Small-power ball blast is carried out to the collecting board ontology and conductive bar that spray upper Sn coating, so that Sn coating surface has pit, until Sn coating ball blast is to stopping after 5 ~ 10 μm；

The spraying of Ni coating is carried out on Sn coating again, the coating thickness of the Ni coating is 10 ~ 15 μm；

Finally, drying discharging.

Further, after having sprayed Sn coating and having air-dried, the heat-shrink tube of the high insulation of molding is arranged on the conductive bar, For protecting the conductive bar made of copper, short circuit is prevented.

Due to the above technical solutions, the present invention has the following advantages over the prior art:

Fuel cell pile current collecting board element provided by the present invention, overall structure is simple, and the coating of coating can increase While the electric conductivity of strong entirety, the effective electric conductivity for guaranteeing current collecting board element is not significantly attenuated, additionally it is possible to it is anti-to improve it Oxidisability is improved the wearability of current collecting board element and integral strength by ball blast process in its preparation process, and And the bis- coatings of Sn-Ni used, it can prevent single coating from causing electric conductivity to decline in ball blast processing floating coat damage, so can Guarantee to stablize and efficiently acquires electric current.

Further, using high isolating shrinkable protection of pipe copper electric conductor, short circuit is avoided, personal safety and pile is protected to set Standby safety.

Detailed description of the invention

Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter. Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these What attached drawing was not necessarily drawn to scale.In attached drawing:

Fig. 1 is the structural schematic diagram of fuel cell pile current collecting board element according to an embodiment of the invention.

Wherein, the reference numerals are as follows:

1, pile, 2 collecting board ontologies, 3, conductive bar, 4, heat-shrink tube.

Specific embodiment

Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.

As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments It can be combined with each other at conflict.

Present embodiment describes a kind of fuel cell pile current collecting board elements, as shown in Figure 1, including integrally formed receipts Collect plate ontology 2 and conductive bar 3, the collecting board ontology 2 is formed with conductive bar 3 by fine copper plate integrated punching, the collecting board sheet Body 2 is connect with 1 monocell of pile, in 90 degree and as current collecting board element between the conductive bar 3 and the collecting board ontology 2 Pin leads to the outside of battery case, highly conductive wear-resistant coating is coated on the collecting board ontology 2 and conductive bar 3, in institute State the heat-shrink tube 4 that high insulation is arranged on conductive bar 3.

The highly conductive wear-resistant coating is Sn-Ni coating, wherein Sn coating with a thickness of 5 ~ 10 μm, Ni coating with a thickness of 10~15μm。

According to another embodiment, a kind of preparation process of fuel cell pile current collecting board element is additionally provided, electric current is received Collecting plate includes integrally formed collecting board ontology and conductive bar, and the collecting board ontology is connect with pile monocell, the conduction It is in the outside that 90 degree and the pin as current collecting board element lead to battery case, the receipts between item and the collecting board ontology Collect and be coated with highly conductive wear-resistant coating on plate ontology and conductive bar, the highly conductive wear-resistant coating is Sn-Ni coating, this electric current The process of collecting board includes:

Carrying out punching press to the fine copper plate with a thickness of 0.5mm makes machine-shaping go out collecting board ontology and conductive bar；

The surface of collecting board ontology and conductive bar spray Sn coating, Sn coating with a thickness of 15 ~ 25 μm, then pass through organdy Small-power ball blast is carried out to the collecting board ontology and conductive bar that spray upper Sn coating, so that Sn coating surface has pit, until Sn coating ball blast is to stopping after 5 ~ 10 μm；

The spraying of Ni coating is carried out on Sn coating again, the coating thickness of the Ni coating is 10 ~ 15 μm；

Finally, drying discharging.

Further, after having sprayed Sn coating and having air-dried, the heat-shrink tube of the high insulation of molding is arranged on the conductive bar, For protecting the conductive bar made of copper, short circuit is prevented.

In summary, fuel cell pile current collecting board element provided by the present invention, overall structure is simple, coating Coating can be while enhancing whole electric conductivity, and the effective electric conductivity for guaranteeing current collecting board element is not significantly attenuated, also It can be improved its inoxidizability, make the wearability and integral strength of current collecting board element by ball blast process in its preparation process The bis- coatings of Sn-Ni for being improved, and using can prevent single coating in the case where ball blast processing floating coat damage leads to electric conductivity Drop can so guarantee to stablize and efficiently acquire electric current.

Further, using high isolating shrinkable protection of pipe copper electric conductor, short circuit is avoided, personal safety and pile is protected to set Standby safety.

The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.