TWM579826U - Battery exchange membrane sealing structure - Google Patents

Abstract

The present invention is to provide a battery exchange diaphragm sealing structure which is easy to assemble, has low dimensional limitations, and has good strainability. The technical means is: a battery exchange diaphragm sealing structure, the sealing structure can be applied to a liquid flow energy storage battery, which has a first electrode plate, a first carbon material electrode, an exchange diaphragm, and a second carbon material electrode in sequence And the power generating area formed by the second plate, the sealing structure comprises a sealing gasket, wherein the sealing pad comprises a plurality of sealing strips respectively disposed at respective sides of the exchange diaphragm, and sequentially forming the sealing mats in series. The two ends are respectively formed with a bevel joint portion capable of engaging with the corresponding end of the adjacent sealing strip; the cross-section of the sealing strip comprises the first and second wall portions, the vertical connecting wall portion, the card slot and the protruding portion, A wall portion can be used for abutting the second plate and positioning the second carbon material electrode, the card slot can be used for the corresponding side of the positioning exchange diaphragm, and the protruding portion can be used for abutting the first plate and positioning the first carbon electrode use.

Description

Battery exchange diaphragm sealing structure

The invention relates to a diaphragm sealing structure capable of matching a liquid flow energy storage battery application, in particular to a battery exchange diaphragm sealing structure.

Liquid battery (English: Flow battery), is a kind of battery, technically, it is a fuel cell and an electrochemical cell [electrochemical reversibility]. In the whole system, it usually contains two containers, which store different A liquid chemical solvent that forms two secondary systems.

The connection between the two subsystems is the power generation zone, separated by a membrane. The two chemical solvents flow from their container to the power generation zone, and the membrane is exchanged to generate ion exchange. Discharge or store electricity.

As shown in Figure 1, the liquid energy storage battery (200) can be used in conjunction with green energy generation. After the load (60) is applied, the two electrolyte tanks (70) arranged in a bilaterally symmetric manner are actually required for operation. And two-cycle pump (80), overall, superior to the traditional rechargeable battery in nature, not only convenient scale, longer life, better security, compared to the current hottest lithium-ion battery, facing The high current, overcharge and overdischarge that are tabooed, no pressure, no fire and explosion, after years of development, is already a relatively mature energy storage technology.

The liquid energy storage battery (200) is composed of a plate (201), a carbon material electrode (202), a sealing gasket (203), an exchange diaphragm (30), and the like, as shown in Fig. 2, a conventional stack Loading cycle After the plate (201) → sealing gasket (203) → carbon material electrode (202) → exchange diaphragm (30) → carbon material electrode (202), repeat another cycle of stacked plates (201) → sealing lining Pad (203) → carbon material electrode (202) → exchange diaphragm (30) → carbon material electrode (202) until all the plates (201) are stacked.

The liquid energy storage battery uses a proton exchange membrane as a separation of the fluids of the two redox reactions. Generally, the diaphragm property is a thermoplastic film material, and is continuously wound into a round shaft package; Fully used without generating residual material or trimming material, the diaphragm adopts a square-shaped cutting design, which also acts as a mutual leakage prevention for the fluids on the two sides (positive and negative) of the diaphragm, and prevents the combination of multiple plates. The sealing gasket of the battery and the external leakage should be matched with the surrounding edge of the diaphragm, so it is generally arranged in a square shape.

The traditional sealing gasket may have poor sealing effect due to its sliding or moving, vibration or heat expansion and contraction effects, which affects the service life of the whole battery, and has many assembly problems, resulting in an inability to increase the production capacity and overall production. The cost is high.

Therefore, there has been a manufacturer to introduce a sealing gasket as disclosed in Patent Document 1 to solve the above problems, but even in the sealing gasket disclosed in Patent Document 1, when the exchange separator is stacked on the sealing gasket, Since the diaphragm is extremely thin and light, careful attention should be paid to the placement of the edge of the diaphragm. The edge of the diaphragm can only be placed on the second convex structure, but it cannot cover the top of the first convex structure. There is also a certain difficulty in assembly.

Patent Document 1 adopts a double convex seal structure, and although it can prevent mutual leakage between reaction fluids on both sides of the diaphragm, or prevent external leakage of a battery composed of a plurality of plates, the first convex structure (outer side) and the prevention of leakage prevention are prevented. The thickness of the second convex structure (inner side) + the diaphragm after the inner leakage is not equal, so that the degree of compression due to the difference in the thickness of the bump is different when assembling the pressure, and the first convex structure or the second may occur. The sealing effect of the convex structure is poor and there is leakage.

At the same time, due to the stacking of the thin diaphragm, the height of the second convex structure is lower than the height of the first convex structure, and the difference between the two is about <0.5 mm, so that the thin and thin diaphragm is easy to be touched by external force. The phenomenon of displacement causes leakage of the reaction fluid between the two sides of the diaphragm or leakage of the battery to the outside.

On the other hand, the sealing gasket is a function of ensuring fluid sealing, and an integral molding design is required. However, due to the increase in battery capacity and the size of the electrode plate, the integrally formed sealing gasket mold becomes large, and the procurement cost of the process mold is further increased. .

In view of this, how to provide a battery exchange diaphragm sealing structure that can solve the aforementioned problems has become an object of the present invention to be improved.

Patent Document 1: Taiwan New Patent Publication No. M451674, "Energy Supply Device for Sealing Structure and Application", announced on April 21, 2013.

The purpose of the present invention is to provide a battery exchange diaphragm sealing structure which is easy to assemble, leakproof and leakproof, and which is not easily displaced by the diaphragm.

In order to solve the above problems and achieve the object of the present invention, the technical means of the present invention is realized as a battery exchange diaphragm sealing structure, and the sealing structure (100) can be applied to a liquid energy storage battery (200), the foregoing The liquid energy storage battery (200) has a first electrode plate (10), a first carbon material electrode (20), an exchange diaphragm (30), a second carbon material electrode (40), and a second electrode plate which are sequentially disposed. (50) a power generation zone (300) formed, the sealing structure (100) comprising a gasket (1) for positioning the exchange diaphragm (30), characterized in that: the gasket (1), The utility model comprises a plurality of sealing strips (11) respectively arranged at respective sides of the exchange diaphragm (30), each of the sealing strips (11) sequentially forming the sealing mat (1) in series, and the sealing strip (11) One end of each of the two ends is formed to correspond to the adjacent sealing strip (11) An end-fitted bevel joint (111); the cross-section of the seal strip (11) further includes a first wall portion (A) on the bottom side and a first wall portion (A) spaced apart from the first wall portion (A) a second wall portion (B) at the top side, a vertical connecting wall portion (C) provided on one side of the first wall portion (A) and the second wall portion (B), and one of which is defined by the foregoing three And the formed card slot (D) and a protrusion (E) disposed on the surface of the second wall portion (B), the first wall portion (A) can be used to abut the second plate (50) And positioning the second carbon material electrode (40), the card slot (D) can be used for positioning the corresponding side of the exchange diaphragm (30), the protrusion (E) can be used to abut the first plate (10) for positioning the first carbon material electrode (20).

More preferably, the sealing strip (11) is an elastic plastic strip.

More preferably, the vertical connecting wall portion (C) is one of the following: an in-line connecting wall (C1) and a U-shaped connecting wall (C2).

More preferably, the bevel joint portion (111), at the corresponding first wall portion (A) and the second wall portion (B), is provided with at least one of the following structures: a positioning groove ( 112) A cassette (113) that can cooperate with the positioning groove (112).

More preferably, the card slot (D) and the corresponding side of the exchange diaphragm (30) are further coated with a colloid (2).

More preferably, the projection (E) structure and the second wall portion (B) structure are one of the following: an integrally formed structure and a separate structure.

Compared with the prior art, the effect of the present invention is as follows: The novel sealing structure (100) utilizes a gasket (1) composed of a sealing strip (11) in series to achieve a reduction in the size of the mold and a reduction in the cost of the mold. With sufficient strength, when combined with the exchange diaphragm (30), a combination can be formed to facilitate installation, which can improve work efficiency, and the design of the sealing strip (11) can have the best compact effect when sealing. The important thing is that the battery stack When installed, the exchange diaphragm (30) is not affected and displaced.

1‧‧‧ Seal

11‧‧‧ Sealing strip

111‧‧‧Bevel joint

112‧‧‧ positioning groove

113‧‧‧Carmen

2‧‧‧colloid

10‧‧‧First plate

20‧‧‧First carbon electrode

30‧‧‧Exchange diaphragm

40‧‧‧Second carbon electrode

50‧‧‧Second plate

60‧‧‧ load

70‧‧‧ electrolyte tank

80‧‧‧Circulating pump

A‧‧‧First wall

B‧‧‧Second wall

C‧‧‧Vertical connecting wall

C1‧‧‧-shaped connecting wall

C2‧‧‧U-shaped connecting wall

D‧‧‧ card slot

E‧‧‧protrusion

100‧‧‧ Sealing structure

200‧‧‧Liquid energy storage battery

201‧‧‧ plates

202‧‧‧Carbon electrode

203‧‧‧ Sealing gasket

300‧‧‧Power generation area

Figure 1: Schematic diagram of the principle of a liquid energy storage battery.

Figure 2: Schematic representation of the three-dimensional decomposition of the liquid energy storage battery.

Figure 3: Schematic diagram of the three-dimensional decomposition structure of the new type of liquid flow energy storage battery.

Figure 4: A perspective view of the new type of exchange diaphragm.

Figure 5: Schematic diagram of the decomposition of the new type of exchange diaphragm.

Figure 6: Schematic diagram of the cross-sectional structure of the new type of liquid-phase energy storage battery.

Fig. 7 is a perspective view showing another embodiment of the present invention in combination with an exchange diaphragm.

Fig. 8 is a schematic exploded view showing another embodiment of the present invention in combination with an exchange diaphragm.

Figure 9: Schematic diagram of the cross-sectional structure of another embodiment of the present invention in combination with a liquid flow energy storage battery

The following is a detailed description of the following embodiments according to the drawings: as shown in FIGS. 4 to 9 , the figure discloses a battery exchange diaphragm sealing structure, and the sealing structure (100) can be applied to a liquid flow. In the energy storage battery (200), the liquid flow energy storage battery (200) has a first electrode plate (10), a first carbon material electrode (20), an exchange diaphragm (30), and a second carbon material electrode which are sequentially disposed. (40), and a power generation zone (300) formed by the second plate (50), the sealing structure (100) comprising a gasket (1) for positioning the exchange diaphragm (30), characterized in that: The gasket (1) includes a plurality of sealing strips (11) respectively disposed at respective sides of the exchange membrane (30), and each of the sealing strips (11) is sequentially connected to form the gasket (1) And the two ends of the sealing strip (11) are respectively formed with a bevel joint (111) capable of engaging with the corresponding end of the adjacent sealing strip (11); The cross-sectional structure of the sealing strip (11) includes a first wall portion (A) on the bottom side, a second wall portion (B) spaced apart from the top side of the first wall portion (A), and a a vertical connecting wall portion (C) on the first wall portion (A) and the second wall portion (B) side, a card slot (D) defined by the above three, and one disposed on the first wall portion (A) a protrusion (E) on the surface of the second wall portion (B), the first wall portion (A) being capable of abutting the second electrode plate (50) and positioning the second carbon material electrode (40), The card slot (D) can be used for positioning the corresponding side of the exchange diaphragm (30), the protrusion (E) can be used to abut the first plate (10) and position the first carbon electrode (20) use.

Among them, the sealing gasket (1) is sequentially connected in series by the sealing strip (11), which greatly reduces the size of the mold and reduces the procurement cost of the mold. The sealing gasket (1) is matched with the exchange diaphragm (30) to make it strong. Sealing the frame, because of the sufficient thickness of the frame, the combination of the exchange diaphragm (30) and the gasket (1) can easily put the whole between the first plate (10) and the second plate (50). Installation is easier, so it can be stacked differently from the traditional five materials and four components, and it can be stacked in an easier way, which is beneficial to improve work efficiency.

Secondly, the arrangement of the single projection (E) can concentrate the pressure applied during assembly of the battery on the projection (E), so that the sealing can achieve the best compact effect.

Furthermore, the exchange diaphragm (30) is sufficiently covered by the gasket (1), so that when the battery is stacked, it is no longer affected by the external force, and the displacement state occurs.

In addition, the application of the bevel joint portion (111), when subjected to pressure, can equally divide the pressure to the bevel joint portion (111) of the opposing two sealing strips (11), thereby avoiding separation and improving sealing performance.

In the above, the sealing strip (11) is an elastic plastic strip.

Among them, the elastic plastic strip is used as the sealing strip (11), which can meet the application requirements of the sealing gasket, and the material can be selected from the group consisting of fluorocarbon rubber, silicone rubber, acid-resistant synthetic rubber, and other polyvinyl chloride, poly. Composite rubber such as ethylene, polypropylene, and polystyrene.

Please refer to FIG. 4, FIG. 6 and FIG. 7 and FIG. 9 for the vertical connecting wall portion. (C) is one of the following: a straight connecting wall (C1) and a U-shaped connecting wall (C2).

Among them, the vertical connecting wall portion (C) implemented by the in-line connecting wall (C1) can be easily produced, has greater strength, takes up less space, and has good applicability.

Secondly, the vertical connecting wall portion (C) implemented by the U-shaped connecting wall (C2) can be applied to a larger liquid flow energy storage battery (200), and the mounting is easier, and there is no fear that it is difficult to match the exchange diaphragm (30). The problem has occurred.

Referring to FIG. 4 and FIG. 7, the bevel joint portion (111) is provided with at least one of the following structures at the corresponding first wall portion (A) and the second wall portion (B). : a positioning groove (112), a latch (113) that can cooperate with the positioning groove (112).

Wherein, when the first wall portion (A) and the second wall portion (B) of the bevel joint portion (111) are respectively provided with positioning grooves (112), and the other sealing strip (11) is correspondingly inclined At the corner joint portion (111), the first wall portion (A) and the second wall portion (B) should be correspondingly provided with a latch (113) to achieve a stable connection between the seal strip (11) and the seal strip (11). .

Secondly, vice versa, when the first wall portion (A) and the second wall portion (B) of the bevel joint portion (111) are respectively provided with a latch (113) and the other seal strip (11) At the corresponding bevel joint portion (111), the first wall portion (A) and the second wall portion (B) should be correspondingly provided with positioning grooves (112), so that the sealing strips (11) are stabilized with each other. connection.

In the above, the card slot (D) and the corresponding side of the exchange diaphragm (30) are further coated with a colloid (2).

Among them, through the application of the colloid (2), the exchange diaphragm (30) can be combined with the gasket (1) as a diaphragm seal combination, and when subjected to pressure, no displacement occurs.

In the above, the protruding portion (E) structure and the second wall portion (B) structure are one of the following: an integrally formed structure and a separate structure [not disclosed in the drawings).

Wherein, the second wall portion (B) of the integrally formed structure is matched with the protruding portion (E) It can be easily produced and installed, and can be quickly applied to the product, and because there is no gap between the second wall portion (B) and the protruding portion (E), the sealing effect is optimal and the utility is good.

Secondly, the second wall portion (B) of the independent structure is matched with the protruding portion (E), and can be conveniently applied to various sizes of liquid energy storage batteries (200), and can be implemented by using different materials, and can be separately produced. After assembly, reduce the cost of the mold and make it more practical.

The structure, features and effects of the present invention are described in detail above with reference to the embodiments shown in the drawings. However, the above description is only a preferred embodiment of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings. Modification changes consistent with the meaning of the present invention are intended to fall within the scope of the present invention as long as they are within the scope of equal effect.

Claims (6)

A battery exchange diaphragm sealing structure, the sealing structure (100) can be applied to a liquid energy storage battery (200), wherein the liquid energy storage battery (200) has a first plate (10) arranged in sequence, a power generation region (300) formed by a carbon material electrode (20), an exchange diaphragm (30), a second carbon material electrode (40), and a second electrode plate (50), the sealing structure (100) including a supply A gasket (1) for positioning the exchange diaphragm (30), characterized in that the gasket (1) comprises a plurality of sealing strips respectively disposed at respective sides of the exchange membrane (30) (11) Each of the sealing strips (11) is formed in series to form the gasket (1), and the two ends of the sealing strip (11) are respectively formed with a bevel angle that can be matched with the corresponding end of the adjacent sealing strip (11). a joint portion (111); the cross-sectional structure of the seal strip (11) further includes a first wall portion (A) on the bottom side and a first portion disposed at the top side of the first wall portion (A) a second wall portion (B), a vertical connecting wall portion (C) disposed on one side of the first wall portion (A) and the second wall portion (B), and a card slot formed by the foregoing three (D), and a protrusion provided on the surface of the second wall portion (B) Part (E), the first wall portion (A) can be used to abut the second plate (50) and position the second carbon material electrode (40), and the card slot (D) can be used to position the exchange diaphragm (30) For the corresponding side, the projection (E) can be used to abut the first plate (10) and position the first carbon electrode (20). The battery exchange diaphragm sealing structure according to claim 1, wherein the sealing strip (11) is an elastic plastic strip. The battery exchange diaphragm sealing structure according to claim 2, wherein the vertical connecting wall portion (C) is one of the following: an in-line connecting wall (C1) and a U-shaped connecting wall (C2). The battery exchange diaphragm sealing structure according to claim 3, wherein: the bevel joint portion (111) is provided at least at the corresponding first wall portion (A) and the second wall portion (B) There is one of the following structures: a positioning groove (112), and a latch (113) that can cooperate with the positioning groove (112). The battery exchange membrane sealing structure according to claim 4, wherein: the card slot (D) and the corresponding side of the exchange membrane (30) are further coated with a colloid (2). The battery exchange diaphragm sealing structure according to claim 5, wherein: the protrusion (E) structure and the second wall portion (B) structure are one of the following: an integrally formed structure, independent structure.