Runner battery plate with glue overflowing groove

Abstract

The utility model relates to the technical field of battery bipolar plate structures, and provides a runner battery plate with glue overflow grooves, which comprises a plate body, a groove is arranged in the center of the plate body, a runner is arranged in the groove, a glue channel is arranged on the periphery of the runner, a plurality of glue overflow grooves are arranged along the periphery of the glue channel, and conical cambered surfaces are arranged at corners of the glue overflow grooves and the glue channel. A first arc-shaped surface is arranged at the bottom of the glue channel groove, a glue outlet is formed in the tail end of the glue overflowing groove, and a second arc-shaped surface is arranged on the connecting surface of the glue outlet and the polar plate, so that the glue clamping condition is reduced and avoided, and the glue circulation performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery bipolar plate structure technology, specifically to a flow channel battery electrode plate with an overflow groove. Background Technology

[0002] Bipolar plates, also known as current collectors, use designed and manufactured flow channels to evenly distribute gas to the reaction layer of the electrodes for electrode reactions. The flow channels on the surface of the bipolar plate ensure uniform penetration and flow of electrolyte on the electrodes, avoiding uneven distribution of electrolyte on the electrodes, thereby improving the charge and discharge performance of the battery and the system capacity.

[0003] To ensure the sealing of the bipolar plate and the battery, the electrode plate needs to be glued to the battery. In order to ensure that the glue is evenly distributed on the outside of the flow channel, a sealing groove is set on the outside of the coolant flow channel. A hybrid structure flow field fuel cell bipolar plate can be referred to in the announcement number CN 206697552U. By setting a sealing groove around the outer periphery of the flow channel, the glue is applied in the sealing groove, thereby restricting the flow range of the glue. However, it is difficult to control the amount of glue sprayed during filling. If too much glue is sprayed, the glue will overflow after the electrode plate is bonded to the battery, which will affect the flatness of the bipolar plate pressing and thus affect the flow of electrolyte in the flow channel.

[0004] To solve the problem of glue overflow, a hydrogen fuel cell anode plate flow channel structure with a glue overflow groove structure can be referred to in the announcement number CN220692061U. The cooling flow channel sealing groove is provided with a first glue overflow groove and a second glue overflow groove. The second glue overflow groove is arranged parallel to the outside of the cooling flow channel sealing groove, and the first glue overflow groove is arranged vertically to the cooling flow channel sealing groove and passes through the second glue overflow groove and the cooling flow channel sealing groove in sequence.

[0005] The aforementioned sealing groove can guide excess glue, which is squeezed onto the overflow groove, preventing it from overflowing into other parts outside the sealing groove. However, the first overflow groove, the second overflow groove, and the cooling channel sealing groove form a right angle at their through-connection. The glue itself has a certain viscosity. If the assembly environment temperature is high, the glue may become too viscous, causing poor flow. Glue residue may accumulate at some of the through-connection right angles, resulting in different glue overflow situations in the multiple first overflow grooves. This leads to uneven glue distribution in the sealing groove, affecting the flatness of the bipolar plate pressing. Utility Model Content

[0006] The purpose of this invention is to provide a flow channel battery plate with an overflow groove, which can improve the technical problem of glue sticking in the overflow groove.

[0007] To achieve the above objectives, a flow channel battery electrode plate with overflow grooves includes an electrode plate body, a groove is formed in the center of the electrode plate body, a flow channel is formed in the groove, an adhesive channel is formed on the outer periphery of the flow channel, a plurality of overflow grooves are formed along the outer periphery of the adhesive channel, a conical arc surface is formed at the corner of the overflow groove and the adhesive channel, a first arc-shaped surface is formed at the bottom of the adhesive channel groove, an adhesive outlet is formed at the end of the overflow groove, and a second arc-shaped surface is formed on the surface of the adhesive outlet and the electrode plate.

[0008] Further configuration involves the curved conical surface contacting the bottom of the adhesive channel, and the bottom surface of the curved surface contacting the top of the adhesive channel.

[0009] A further feature is that the top of the overflow groove is provided with rounded corners.

[0010] Further, the outlet cross-section is set to be U-shaped.

[0011] Further configured, the second arc extends to the side of the electrode body.

[0012] A further configuration is that the overflow groove is perpendicular to the glue channel.

[0013] Further configuration involves several overflow grooves evenly arranged on the outside of the glue channel.

[0014] Further configured, the bottom surfaces of the overflow groove and the glue channel have the same maximum width.

[0015] Further settings include setting the flow channel to an S-shape.

[0016] Further configuration involves mounting holes located on the outer periphery of the serpentine flow channel and at the four corners of the groove.

[0017] The beneficial effects of one or more of the above technical solutions:

[0018] A conical arc surface is set at the junction of the overflow groove and the glue channel. The larger arc surface contacts the top of the groove, while the smaller arc surface contacts the bottom of the groove. This ensures smooth cornering while reducing the corner area. At the same time, the bottom of the overflow groove and the inner wall of the groove are provided with an arc surface. The glue outlet of the overflow groove has a U-shaped cross section, and the surface connecting the glue outlet and the electrode plate is provided with an arc surface. There are no right angles at the junction of the overflow groove, which reduces the occurrence of glue jamming and improves glue flow performance. An overflow groove is set on the outside of the glue channel of the electrode plate. When the glue volume is large, the excess glue can flow out of the glue channel through the overflow groove, making the glue flow more uniform and the sealing effect better. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0022] In the figure, 1 is the electrode plate body; 2 is the groove; 3 is the flow channel; 4 is the glue channel; 5 is the overflow groove; 6 is the first arc-shaped surface; 7 is the glue outlet; 8 is the second arc-shaped surface; 9 is the conical arc surface; 10 is the rounded corner; 11 is the mounting hole. Detailed Implementation

[0023] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0024] Reference Figure 1 and Figure 2 A type of battery electrode plate with an overflow groove was exhibited. Figure 1 The device includes an electrode body 1, a groove 2 is formed in the center of the electrode body 1, a flow channel 3 is provided in the groove 2, a glue channel 4 is provided on the outer periphery of the flow channel 3, a plurality of glue overflow grooves 5 are formed on the outer periphery of the glue channel 4, a conical arc surface 9 is formed at the corner of the glue overflow groove 5 and the glue channel 4, a first arc surface 6 is provided at the bottom of the glue channel 4, a glue outlet 7 is provided at the end of the glue overflow groove 5, and a second arc surface 8 is provided on the surface where the glue outlet 7 connects with the electrode plate.

[0025] The curved conical surface contacts the bottom of the glue channel 4, and the bottom surface of the curved surface contacts the top of the glue channel 4, ensuring smooth corners while reducing the corner area. The top of the overflow groove 5 is provided with a rounded corner 10, which reduces the occurrence of glue jamming and improves the glue flow performance.

[0026] The adhesive outlet 7 has a U-shaped cross-section, and the second arc-shaped surface 8 extends to the side of the electrode body 1 to ensure that the adhesive can flow downward by gravity after flowing out of the adhesive outlet 7.

[0027] The overflow trough 5 is perpendicular to the glue channel 4, and several overflow troughs 5 are evenly arranged on the outside of the glue channel 4, with the same spacing between adjacent overflow troughs 5.

[0028] The bottom surfaces of the overflow trough 5 and the glue channel 4 have the same maximum width. By setting the overflow trough 5 and the glue channel 4 to the same size, the flow of glue is ensured.

[0029] The flow channel 3 is set to S-shape, and the flow channel 3 can be set as an annular flow channel 3 or a fan-shaped flow channel 3.

[0030] Mounting holes 11 are provided on the outer periphery of the serpentine flow channel 3 and at the four corners of the groove 2, through which the battery and the electrode plate body 1 are fastened together.

[0031] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A flow channel battery plate having a glue spill slot, characterized by, The plate body is provided with a groove in the center, a flow channel in the groove, a glue channel outside the flow channel, a plurality of glue overflow grooves along the outer periphery of the glue channel, a tapered arc surface at the corner of the glue overflow groove and the glue channel, a first arc surface at the bottom of the glue channel, a glue outlet at the end of the glue overflow groove, and a second arc surface at the connection between the glue outlet and the plate.

2. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The tapered arc surface contacts the bottom of the glue channel, and the bottom of the arc surface contacts the top of the glue channel.

3. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The top of the glue overflow groove is provided with a round corner.

4. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The glue outlet is in a U-shaped cross section, and the plate body extends on the side.

5. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The second arc surface extends to the side of the plate body.

6. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The glue overflow groove is perpendicular to the glue channel.

7. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The plurality of glue overflow grooves are evenly arranged outside the glue channel.

8. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, The bottom of the glue overflow groove and the glue channel have the same maximum width.

9. The flow channel battery plate having a glue overflow slot according to claim 1, wherein, The flow channel is in an S shape.

10. The flow channel battery plate having a glue overflow groove according to claim 1, characterized in that, Mounting holes are arranged at the outer periphery of the snake-shaped flow channel and at the four corners of the groove.

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