A high thermal conductivity flame retardant sealing ring for new energy vehicle power battery and its production method

Abstract

The invention relates to the technical field of sealing rings, and specifically to a high thermal conductivity and flame retardant sealing ring for a power battery of a new energy vehicle and a production method thereof; the sealing effect of a second sealing ring and a sealing portion where a power battery is installed is better; and after the sealant in the rubber ring flows out completely, the rubber ring still exists, so that the second sealing ring squeezes the rubber ring, and the rubber ring squeezes the sealing portion of the power battery, so that the rubber part of the upper sealing ring located at the triangular groove squeezes the second sealing ring, and the second sealing ring squeezes the rubber ring, and the three are in a constant squeezing state. If looseness occurs, due to the existence of squeezing force, the second sealing ring will immediately fill the gap caused by the looseness, thereby improving the sealing effect, and thereby reducing the problem of poor sealing effect when the power battery shakes.

Description

Technical Field

[0001] The invention relates to the technical field of sealing rings, and in particular to a high thermal conductivity and flame retardant sealing ring for a new energy vehicle power battery and a production method thereof. Background Art

[0002] New energy power batteries refer to batteries used to drive new energy vehicles (such as electric vehicles, hybrid vehicles and fuel cell vehicles) and energy storage systems; they are the core components of new energy vehicles, responsible for converting chemical energy into electrical energy to power the motor;

[0003] Compared with traditional lead-acid batteries or nickel-cadmium batteries, new energy power batteries have the advantages of higher energy density, longer cycle life, faster charging and discharging speed, and more environmental protection;

[0004] In addition, during the production of power batteries, since there is electrolyte inside the power batteries, which is the core component of the power batteries, once leaked, it will cause safety hazards, such as short circuit, corrosion, and even fire or explosion; therefore, during the production of power batteries, it is necessary to install sealing rings on the power batteries to prevent the leakage of electrolyte inside the power batteries;

[0005] When the sealing ring of the above-mentioned battery is installed, since the power battery used in the new energy vehicle will release heat when working, and the new energy vehicle will generate vibration during driving, it is easy to cause the sealing ring to loosen when sealing the power battery, or the sealing effect is reduced, which will cause a short circuit in the internal power system and even cause a fire.

[0006] In summary, in order to solve the technical problem raised in this article, the present invention proposes a high thermal conductivity and flame retardant sealing ring for a new energy vehicle power battery and a production method thereof. Summary of the invention

[0007] The present invention proposes a high thermal conductivity and flame retardant sealing ring for a new energy vehicle power battery; the sealing ring comprises an upper sealing ring and a lower sealing ring;

[0008] An embedding groove is provided in an annular manner inside the lower sealing ring, the cross section of which is inclined toward the middle of the lower sealing ring, and one end of the embedding groove located inside the lower sealing ring is parallel to the horizontal plane; arc grooves are evenly provided inside the embedding groove and one end inside the lower sealing ring;

[0009] An insert is provided at the lower end of the upper sealing ring. The insert is composed of a plurality of arc-shaped plates. In the initial state, the plurality of arc-shaped plates make the insert form a complete ring. The shape of the insert composed of the plurality of arc-shaped plates is the same as the shape of the embedding groove, and the arc-shaped plates are made of elastic material. The end of the arc-shaped plate away from the upper sealing ring is evenly provided with arc-shaped protrusions.

[0010] The outer rings of the upper sealing ring and the lower sealing ring are both sleeved with rigid rings, the lower end of the rigid ring located outside the upper sealing ring is provided with a clamping block in an annular manner, the outer ring of the clamping block is provided with a plurality of arc-shaped blocks, and the rigid ring outside the lower sealing ring is provided with an annular clamping groove, the cross section of the clamping groove is L-shaped, and a plurality of arc-shaped grooves are evenly provided on one side of the clamping groove, and the number and size of the arc-shaped grooves are the same as those of the arc-shaped blocks;

[0011] An extrusion piece is arranged between the upper sealing ring and the lower sealing ring.

[0012] Preferably, the extrusion member comprises:

[0013] The second sealing ring is arranged at the upper end of the lower sealing ring, the inner diameter of the second sealing ring is the same as the inner diameter of the lower sealing ring, and the second sealing ring and the lower sealing ring are the same as a whole; the inner diameter of the upper sealing ring is the same as the inner diameter of the second sealing ring; rubber rings are evenly arranged on the inner side of the second sealing ring, the inside of the rubber ring is hollow, and the inside of the rubber ring is filled with sealant;

[0014] The upper end of the lower sealing ring is provided with an annular triangular block, and the lower end of the upper sealing ring is provided with an annular triangular groove. The cross section of the triangular block is an isosceles triangle, and the cross section of the triangular groove is a right triangle; and the cross section of the triangular groove is smaller than that of the triangular block.

[0015] Preferably, an arc-shaped protrusion is provided on the inner side of the triangular groove.

[0016] Preferably, the sealant filled inside the rubber ring is silicone sealant.

[0017] Preferably, an annular connecting block is provided at the lower end of the upper sealing ring, and an arc-shaped connecting groove is provided at the upper end of the lower sealing ring; and a sealant is provided inside the connecting groove.

[0018] Preferably, the connection block is located inside the embedding groove.

[0019] Preferably, the surfaces of the upper sealing ring, the lower sealing ring and the second sealing ring are coated with a flame retardant during processing; and reinforcing fillers are added inside them.

[0020] Preferably, the flame retardant is a composite system of magnesium hydroxide and zinc borate, wherein the mass ratio of magnesium hydroxide to zinc borate is 7:3.

[0021] Preferably, the reinforcing filler is a composite system of carbon nanotubes and graphene, wherein the mass ratio of carbon nanotubes to graphene is 6:4.

[0022] A method for producing a high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery, the method being applicable to the above-mentioned high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery; the method comprising the following steps;

[0023] S1: The upper sealing ring and the lower sealing ring are produced by using a casting mold, wherein the triangular groove, the second sealing ring, the embedding groove, the triangular block, the connecting groove and the connecting block on the upper sealing ring can all be produced by casting molds, specifically by formulating corresponding mold cavities;

[0024] S2: The rigid rings on the outer sides of the upper and lower sealing rings can be produced by machining, the rigid ring on the outer side of the lower sealing ring is grooved, and the block on the upper sealing ring is processed; after the upper and lower sealing rings are produced, the rigid rings corresponding to the upper and lower sealing rings are installed on their outer sides;

[0025] S3: Then, a rubber ring is produced. The rubber ring is formed by connecting strip-shaped rubber tubes. After the strip-shaped rubber tubes are connected to form the rubber ring, a sealant is injected into the rubber ring using a syringe. After the sealant injection is completed, a plurality of through holes are pierced into the rubber ring using a syringe. Then, the rubber ring is installed on the side wall of the second sealing ring.

[0026] S4: The arc plate on the insert is produced by a casting method. After the arc plate is produced, the arc plate is installed below the upper sealing ring in a circular arrangement.

[0027] The beneficial effects of the present invention are as follows:

[0028] This makes the sealing effect between the second sealing ring and the power battery installation sealing part better; and when the sealant in the rubber ring completely flows out, the rubber ring still exists, so that the second sealing ring squeezes the rubber ring, and the rubber ring squeezes the sealing part of the power battery, so that the rubber part of the upper sealing ring located at the triangular groove squeezes the second sealing ring, and the second sealing ring squeezes the rubber ring, and the three are in a constant squeezing state. If looseness occurs, due to the existence of squeezing force, the second sealing ring will immediately fill the gap caused by the looseness, thereby improving the sealing effect, thereby reducing the problem of poor sealing effect due to shaking of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural view of the upper sealing ring and the lower sealing ring in the present invention;

[0030] Figure 2 is a half-section view of the upper sealing ring and the lower sealing ring in the present invention;

[0031] Figure 3 Yes Figure 2 The front view in;

[0032] Figure 4 It is a structural view of the upper curved plate in the present invention;

[0033] Figure 5 It is a structural view of the triangular groove and the connecting groove in the present invention;

[0034] Figure 6 is a half-section view of the lower sealing ring of the present invention;

[0035] Figure 7 is a cross-sectional view of another part of the lower sealing ring of the present invention;

[0036] Figure 8 It is a flow chart of the method in the present invention.

[0037] In the figure; upper sealing ring 1, arc plate 11, arc shaped protrusion 12, connecting block 13, lower sealing ring 2, embedding groove 21, arc shaped groove 22, triangular block 23, triangular groove 24, arc shaped protrusion 25, connecting groove 26, rigid ring 3, clamping block 31, arc block 32, clamping groove 33, arc groove 34, second sealing ring 4, rubber ring 41. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] Embodiment 1:

[0040] like Figures 1 to 7 As shown; a high thermal conductivity and flame retardant sealing ring for a new energy vehicle power battery; the sealing ring comprises an upper sealing ring 1 and a lower sealing ring 2;

[0041] An embedding groove 21 is formed in an annular manner inside the lower sealing ring 2. The cross section of the embedding groove 21 is inclined toward the middle of the lower sealing ring 2, and one end of the embedding groove 21 located inside the lower sealing ring 2 is parallel to the horizontal plane. An arc-shaped groove 22 is formed evenly inside one end of the embedding groove 21 located inside the lower sealing ring 2.

[0042] An insert is provided at the lower end of the upper sealing ring 1. The insert is composed of a plurality of arc-shaped plates 11. In the initial state, the plurality of arc-shaped plates 11 make the insert form a complete ring. The shape of the plurality of arc-shaped plates 11 is the same as that of the embedding groove 21, and the insert is made of elastic material. The end of the arc-shaped plate 11 away from the upper sealing ring 1 is evenly provided with arc-shaped protrusions 12.

[0043] The outer rings of the upper sealing ring 1 and the lower sealing ring 2 are both sleeved with a rigid ring 3, and a clamping block 31 is provided in an annular manner at the lower end of the rigid ring 3 located outside the upper sealing ring 1, and a plurality of arc-shaped blocks 32 are provided on the outer ring of the clamping block 31, and an annular clamping groove 33 is provided on the rigid ring 3 outside the lower sealing ring 2, and the cross section of the clamping groove 33 is L-shaped, and a plurality of arc-shaped grooves 34 are evenly provided on one side of the clamping groove 33, and the number and size of the arc-shaped grooves 34 are the same as those of the arc-shaped blocks 32;

[0044] An extrusion piece is provided between the upper sealing ring 1 and the lower sealing ring 2;

[0045] The extrusion member comprises:

[0046] The second sealing ring 4 is arranged at the upper end of the lower sealing ring 2, the inner diameter of the second sealing ring 4 is the same as the inner diameter of the lower sealing ring 2, and the second sealing ring 4 and the lower sealing ring 2 are the same as a whole; the inner side of the second sealing ring 4 is evenly arranged with a rubber ring 41, the inside of the rubber ring 41 is hollow, and the inside of the rubber ring 41 is filled with sealant;

[0047] An annular triangular block 23 is provided at the upper end of the lower sealing ring 2, and an annular triangular groove 24 is provided at the lower end of the upper sealing ring 1. The cross section of the triangular block 23 is an isosceles triangle, and the cross section of the triangular groove 24 is a right triangle; and the cross section of the triangular groove 24 is smaller than that of the triangular block 23;

[0048] An arc-shaped protrusion 25 is disposed inside the triangular groove 24 .

[0049] The specific workflow is as follows:

[0050] When installing the sealing ring on the power battery, first manually or using a tool to pry open the arc plate 11 on the embedded part (the arc plate 11 is made of elastic plastic material), and then align the arc plate 11 on the pried-open embedded part with the embedded groove 21. During the process, the block 31 is aligned with the groove 33. During the process, the arc block 32 set on the outer ring of the block 31 is aligned with the arc groove 34. Then, the upper sealing ring 1 is pressed downward to make the arc plate 11 on the embedded part move downward inside the embedded groove 21. Since the lower sealing ring 2 is made of rubber, when the arc plate 11 on the embedded part is embedded into the embedded groove 21, the embedded groove 21 will be slightly propped up to meet the arc plate 11 moving downward inside the embedded groove 21, the block 31 moves downward inside the groove 33, and the arc block 32 moves downward inside the arc groove 34 until the lower end of the block 31 moves completely to The bottom of the card slot 33, at this time, the embedded groove 21 is completely moved to the inside of the embedded groove 21, and the lower sealing ring 2 and the upper sealing ring 1 seal the sealing part of the power battery; and when the arc plate 11 on the embedded part moves to the inside of the embedded groove 21, the arc protrusion 12 of the arc plate 11 away from one end of the upper sealing ring 1 is located inside the arc groove 22, and then the staff manually rotates the rigid ring 3 (rigid ring 3 is a steel material) on the outside of the upper sealing ring 1. When the rigid ring 3 on the outside of the upper sealing ring 1 rotates, the block 31 rotates along with it, and then the arc block 32 on the outside of the block 31 rotates from the inside of the arc groove 34 to the inside of one end of the card slot 33 parallel to the horizontal plane. Since the rigid ring 3 on the outside of the upper sealing ring 1 and the rigid ring 3 on the outside of the lower sealing ring 2 are made of the same material, the block 31 and the card slot 33 are used to engage the upper sealing ring 1 and the lower sealing ring 2;

[0051] When the upper sealing ring 1 rotates, the embedded part composed of the arc plate 11 will rotate accordingly, and the arc-shaped protrusions 12 on the arc-shaped plate 11 will move between adjacent arc-shaped grooves 22, and the arc-shaped protrusions 12 squeeze the rubber material between adjacent arc-shaped grooves 22. Since the material of the lower sealing ring 2 is rubber material, when the arc-shaped protrusions 12 squeeze the rubber part inside the lower sealing ring 2, the rubber part will bulge toward the inner side of the lower sealing ring 2, and the inner side of the lower sealing ring 2 is a sealing part, so that the inner ring of the lower sealing ring 2 squeezes the sealing part on the power battery, so that the sealing effect of the power battery is better;

[0052] And a second sealing ring 4 is provided at the upper end of the lower sealing ring 2, and the second sealing ring 4 is integrated with the lower sealing ring 2; so that when the lower sealing ring 2 is installed on the power battery, the second sealing ring 4 simultaneously wraps the power battery after it needs to be sealed; and the outer ring of the second sealing ring 4 is the same size as the inner ring of the upper sealing ring 1; so in the process of the upper sealing ring 1 moving downward, the inner side of the upper sealing ring 1 moves downward on the outer side of the second sealing ring 4, and in this process, the triangular groove 24 on the upper sealing ring 1 moves downward; until the top of the triangular block 23 on the lower sealing ring 2 enters the interior of the triangular groove 24, at this time, because the cross-section of the triangular block 23 is an isosceles triangle, and the inclined surface of the triangular groove 24 is a right triangle, and the cross-sectional area of ​​the triangular groove 24 is smaller than the cross-sectional area of ​​the triangular block 23; so when the upper sealing ring 1 moves downward, the triangular block 23 will squeeze the triangular groove 24, so that the inner side of the upper sealing ring 1 is close to the second sealing ring 4 The second sealing ring 4 is squeezed in the direction of the rubber ring 41. Since there is sealant inside the rubber ring 41, and the sealant inside the rubber ring 41 is injected through a needle syringe, the rubber ring 41 is covered with holes, so that when the second sealing ring 4 squeezes the rubber ring 41, the sealant inside the rubber ring 41 flows out until the upper sealing ring 1 finishes moving downward, and the upper sealing ring 1 and the lower sealing ring 2 form a whole. At this time, the part of the upper sealing ring 1 located on the inner side of the triangular groove 24 is in a squeezed state, and the arc-shaped protrusion 25 provided inside the triangular groove 24 will also be squeezed by the inclined surface of the triangular block 23. The arc-shaped protrusion 25 will further squeeze the part of the upper sealing ring 1 at the triangular groove 24, so that the rubber part of the upper sealing ring 1 located at the triangular groove 24 squeezes the second sealing ring 4, so that the second sealing ring 4 is always under the squeezing of the upper sealing ring 1, thereby improving the sealing effect of the lower sealing ring 2 and the second sealing ring 4 on the power battery;

[0053] In the above process, after the sealant in the rubber ring 41 flows out, the sealing effect between the second sealing ring 4 and the power battery installation sealing part is better; and when the sealant in the rubber ring 41 flows out completely, the rubber ring 41 still exists, so that the second sealing ring 4 squeezes the rubber ring 41, and the rubber ring 41 squeezes the sealing part of the power battery, so that the rubber part of the upper sealing ring 1 located in the triangular groove 24 squeezes the second sealing ring 4, and the second sealing ring 4 squeezes the rubber ring 41, and the three are in a constant squeezing state. If looseness occurs, due to the existence of squeezing force, the second sealing ring 4 will immediately fill the gap caused by the looseness, thereby improving the sealing effect, thereby reducing the problem of poor sealing effect when the power battery shakes.

[0054] Embodiment 2:

[0055] like Figures 2 to 7 As shown; the sealant filled inside the rubber ring 41 is silicone sealant.

[0056] The specific workflow is as follows:

[0057] On the basis of the above-mentioned embodiment 1, the sealant inside the rubber ring 41 is a silicone sealant; the silicone sealant has excellent high and low temperature resistance, weather resistance, electrical insulation, shock resistance, thermal conductivity and flame retardancy, so that when the sealant inside the rubber ring 41 seals the power battery seal and the second sealing ring 4, it further avoids the power battery from releasing heat, and the new energy vehicle will vibrate during driving, causing the sealing ring to loosen when sealing the power battery.

[0058] Embodiment three:

[0059] like Figures 2 to 6 As shown; the lower end of the upper sealing ring 1 is provided with an annular connecting block 13, and the upper end of the lower sealing ring 2 is provided with an arc-shaped connecting groove 26; the interior of the connecting groove 26 is provided with a sealant;

[0060] The connecting block 13 is located inside the embedding groove 21 .

[0061] The specific workflow is as follows:

[0062] An annular connecting block 13 is arranged at the lower end of the upper sealing ring 1, and an arc-shaped connecting groove 26 is opened at the upper end of the lower sealing ring 2, and a sealing is arranged inside the connecting groove 26. The sealing glue inside the connecting groove 26 is the same as the sealing glue inside the rubber ring 41, so that when the upper sealing ring 1 moves downward, the connecting block 13 moves downward with it until the connecting block 13 is embedded in the connecting groove 26. During the process, the sealing glue overflowing from the connecting groove 26 flows out, so that the connecting block 13 is sealed inside the connecting groove 26, and the overflowing sealing glue makes the lower end surface of the upper sealing ring 1 and the lower end surface of the lower sealing ring 2 adhere together, and the air tightness, flame retardancy and thermal conductivity between the two are better, thereby improving the sealing effect on the power battery.

[0063] Embodiment 4:

[0064] like Figures 1 to 6 As shown; the upper sealing ring 1, the lower sealing ring 2 and the second sealing ring 4 are coated with a flame retardant on their surfaces during the processing; and reinforcing fillers are added inside them;

[0065] The flame retardant is a composite system of magnesium hydroxide and zinc borate, wherein the mass ratio of magnesium hydroxide to zinc borate is 7:3;

[0066] The reinforcing filler is a composite system of carbon nanotubes and graphene, wherein the mass ratio of the carbon nanotubes to the graphene is 6:4.

[0067] The specific workflow is as follows:

[0068] On the basis of the above embodiment, the upper sealing ring 1, the lower sealing ring 2 and the second sealing ring 4 are coated with a flame retardant during processing, and the flame retardant is a mixture of magnesium hydroxide and zinc borate; when the power battery is used, when the temperature rises to a certain level, the magnesium hydroxide will undergo a dehydration reaction, absorb a large amount of heat, thereby reducing the combustion temperature of the rubber, and release water vapor to dilute the combustible gas, while the zinc borate will release boron oxide at high temperature to inhibit combustion; at the same time, it can also react with the polymer in the rubber to form a flame-retardant carbon layer, thereby improving the protection effect of the power battery during driving;

[0069] In addition, during the processing of the upper sealing ring 1, the lower sealing ring 2 and the second sealing ring 4, reinforcing fillers mixed with carbon nanotubes and graphene are added therein. Since carbon nanotubes and graphene have extremely high strength and rigidity, they can be added to rubber to form a reinforcing phase, which significantly improves the tensile strength and elongation at break of the rubber, making it more resistant to stretching and tearing; thereby improving the stability of the sealing ring when hybrid power is generated during driving of the energy vehicle; and reducing the possibility of deformation. In addition, carbon nanotubes and graphene have high thermal conductivity coefficients, and adding them to rubber can improve the thermal conductivity of the rubber, which is beneficial to heat dissipation, avoid local overheating, improve the heat resistance of the sealing ring, and further improve the sealing effect on the power battery;

[0070] After adding the carbon nanotube and graphene mixed material, PC, ABS and PBT mixed materials can be added to the raw materials when preparing the sealing ring. After adding the mixed materials to prepare the sealing ring, since PC, ABS and PBT are all hard plastics, adding them to rubber can increase the hardness of the rubber, making it more wear-resistant and increasing the rigidity of the sealing ring, thereby increasing the tensile strength and tear resistance of the sealing ring to a certain extent;

[0071] In addition, PBT has good heat resistance, and adding it to rubber can improve the heat resistance and flame retardancy of the rubber; PC and PBT have good chemical resistance after mixing, and adding it to the sealing ring can improve the chemical resistance of the sealing ring, thereby improving the tolerance to the electrolyte inside the power battery.

[0072] Embodiment five:

[0073] like Figure 8 As shown; a method for producing a high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery, the method is applicable to the above-mentioned high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery; the method comprises the following steps;

[0074] S1: The upper sealing ring 1 and the lower sealing ring 2 are produced by using a casting mold, wherein the triangular groove 24, the second sealing ring 4, the embedding groove 21, the triangular block 23, the connecting groove 26 and the connecting block 13 on the upper sealing ring 1 can all be produced by casting molds, specifically by formulating corresponding mold cavities;

[0075] S2: The rigid rings 3 on the outer sides of the upper sealing ring 1 and the lower sealing ring 2 can be produced by machining, and the slots 33 are made on the rigid ring 3 on the outer side of the lower sealing ring 2, and the clamping blocks 31 on the upper sealing ring 1 are processed; after the upper sealing ring 1 and the lower sealing ring 2 are produced, the rigid rings 3 corresponding to the upper sealing ring 1 and the lower sealing ring 2 are installed on their outer sides;

[0076] S3: Then produce the rubber ring 41, which is formed by connecting strip-shaped rubber tubes. After the strip-shaped rubber tubes are connected to form the rubber ring 41, a syringe is used to inject sealant into the inside thereof. After the sealant injection is completed, a syringe is used to pierce a plurality of through holes in the rubber ring 41; then install the rubber ring 41 on the side wall of the second sealing ring 4;

[0077] S4: The arc plate 11 on the insert is produced by casting. After the arc plate 11 is produced, the arc plate 11 is installed below the upper sealing ring 1 in a circular arrangement.

Claims

1. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery; characterized in that: The sealing ring comprises an upper sealing ring (1) and a lower sealing ring (2); An embedding groove (21) is provided in an annular shape inside the lower sealing ring (2), the cross section of the embedding groove (21) is inclined toward the middle of the lower sealing ring (2), and one end of the embedding groove (21) located inside the lower sealing ring (2) is parallel to a horizontal plane; an arc-shaped groove (22) is evenly provided at one end of the embedding groove (21) located inside the lower sealing ring (2); An insert is provided at the lower end of the upper sealing ring (1), and the insert is composed of a plurality of arc-shaped plates (11). In an initial state, the plurality of arc-shaped plates (11) form a complete ring shape for the insert. The shape of the insert composed of the plurality of arc-shaped plates (11) is the same as the shape of the insert groove (21), and the arc-shaped plates (11) are made of elastic material. An end of the arc-shaped plate (11) away from the upper sealing ring (1) is evenly provided with arc-shaped protrusions (12); The outer rings of the upper sealing ring (1) and the lower sealing ring (2) are both sleeved with a rigid ring (3); a clamping block (31) is provided in an annular shape at the lower end of the rigid ring (3) located outside the upper sealing ring (1); a plurality of arc-shaped blocks (32) are provided on the outer ring of the clamping block (31); an annular clamping groove (33) is provided on the rigid ring (3) outside the lower sealing ring (2); the cross section of the clamping groove (33) is L-shaped; and a plurality of arc-shaped grooves (34) are evenly provided on one side of the clamping groove (33); the number and size of the arc-shaped grooves (34) are the same as those of the arc-shaped blocks (32); An extrusion piece is provided between the upper sealing ring (1) and the lower sealing ring (2); The extrusion member comprises: The second sealing ring (4) is arranged at the upper end of the lower sealing ring (2), the inner diameter of the second sealing ring (4) is the same as the inner diameter of the lower sealing ring (2), and the second sealing ring (4) and the lower sealing ring (2) are a whole; the inner diameter of the upper sealing ring (1) is the same as the inner diameter of the second sealing ring (4); a rubber ring (41) is evenly arranged on the inner side of the second sealing ring (4), the interior of the rubber ring (41) is hollow, and the interior of the rubber ring (41) is filled with sealing glue.

2. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 1, characterized in that: An annular triangular block (23) is arranged at the upper end of the lower sealing ring (2), and an annular triangular groove (24) is opened at the lower end of the upper sealing ring (1); the cross section of the triangular block (23) is an isosceles triangle, and the cross section of the triangular groove (24) is a right triangle; and the cross section of the triangular groove (24) is smaller than the cross section of the triangular block (23).

3. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 2, characterized in that: An arc-shaped protrusion (25) is arranged inside the triangular groove (24).

4. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 2, characterized in that: The lower end of the upper sealing ring (1) is provided with an annular connecting block (13), and the upper end of the lower sealing ring (2) is provided with an arc-shaped connecting groove (26); the interior of the connecting groove (26) is provided with sealing glue.

5. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 2, characterized in that: The sealant is silicone sealant.

6. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 4, characterized in that: The connecting block (13) is located inside the embedding groove (21).

7. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 1, characterized in that: The upper sealing ring (1), the lower sealing ring (2) and the second sealing ring (4) are coated with a flame retardant on their surfaces during the processing, and reinforcing fillers are added inside them.

8. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 7, characterized in that: The flame retardant is a composite system of magnesium hydroxide and zinc borate, wherein the mass ratio of magnesium hydroxide to zinc borate is 7:

3.

9. A high thermal conductivity flame retardant sealing ring for a new energy vehicle power battery as claimed in claim 7, characterized in that: The reinforcing filler is a composite system of carbon nanotubes and graphene, wherein the mass ratio of the carbon nanotubes to the graphene is 6:4.

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