Battery explosion-proof protective film

Abstract

The utility model discloses a battery explosion-proof protective film, and particularly relates to the technical field of battery explosion-proof protective films, the battery explosion-proof protective film comprises an explosion-proof protective film body sleeved on the outer wall of a battery main body, the top end and the bottom end of the explosion-proof protective film body are provided with mounting holes, and adhesive tapes are fixedly arranged in the two mounting holes. An anode end and a cathode end are respectively arranged at the top end and the bottom end of the battery main body, two adhesive tapes are respectively sleeved on the outer walls of the anode end and the cathode end, a plurality of grooves are formed in the inner wall of the explosion-proof protective film body through hot pressing, and a reinforcing ring with a buffering effect is fixedly arranged in each groove. The two air bags play a role in buffering protection on the outer wall of the explosion-proof protective film body, meanwhile, the bulges on the surfaces of the air bags can improve friction force and prevent the battery main body from rolling and falling, and the heat-conducting rubber reinforcing rings and the heat-conducting rubber reinforcing rods are matched, so that the outer wall of the battery main body can further play a role in buffering and extrusion prevention, and the service life of the battery main body is prolonged. And the heat dissipation of the battery main body can be assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of battery explosion-proof protective films, more specifically to a battery explosion-proof protective film. Background Art

[0002] Batteries are devices that convert chemical energy into electrical energy and are widely used in various portable electronic devices, electric vehicles, and energy storage systems. The basic structure of a battery consists of four main components: a positive electrode, a negative electrode, an electrolyte, and a separator. Batteries are categorized by chemical system: lithium-ion batteries, lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, lithium-manganese batteries, and so on.

[0003] Battery safety is a constant concern in today's market, particularly for new energy vehicles and electronic devices. Consequently, explosion-proof protective films have emerged to ensure battery safety under various extreme conditions. For example, high-temperature fireproof cotton, a novel self-adhesive thermal insulation film and flame-retardant insulating sponge padding material for new energy lithium battery assembly, effectively protects batteries from dangerous high-temperature environments.

[0004] Another example is the explosion-proof valve film. This protective patch is made of transparent, high-temperature resistant PET material, has good explosion-proof performance, and is suitable for various battery protections. These films and protective materials can not only effectively prevent the battery from exploding when it is impacted or overheated, but also extend the battery's service life to a certain extent. For example, the prior art publication number CN220400829U is a battery explosion-proof protective film, explosion-proof valve assembly, and battery. This utility model sets the slit width of the air vents to 0.01mm-0.03mm, thereby making the slit width of the air vents of this application smaller. Electrolyte dust and the like are not easy to fall into the explosion-proof sheet, which is not easy to affect the notching performance of the explosion-proof valve, thereby improving the performance of the explosion-proof valve.

[0005] However, the above-mentioned prior art still has the following problems when used: although the existing explosion-proof protective film wrapped around the outer wall of the battery can play an explosion-proof role, since the outer wall of the explosion-proof protective film is smooth and the film thickness is relatively thin, the battery is easy to tip over and roll when placed. When the battery rolls from a high place, it is easy to be hit and explode, which seriously affects the safety of the battery. Based on this, the utility model provides a battery explosion-proof protective film. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a battery explosion-proof protective film, which uses two airbags to play a buffering and protective role on the outer wall of the explosion-proof protective film. At the same time, the multiple protrusions on the surface of the airbags can increase the friction to prevent the battery body from rolling and falling. The heat-conducting rubber reinforcement ring and the heat-conducting rubber reinforcement rod are used in combination, which can not only further play a buffering and anti-extrusion role on the outer wall of the battery body, but also assist the battery body in heat dissipation, so as to solve the problems arising from the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a battery explosion-proof protective film, comprising an explosion-proof protective film body sleeved on the outer wall of a battery main body, the top and bottom ends of the explosion-proof protective film body are provided with mounting holes, and rubber strips are fixed inside the two mounting holes, the top and bottom ends of the battery main body are respectively provided with an anode terminal and a cathode terminal, and two rubber strips are respectively sleeved on the outer walls of the anode terminal and the cathode terminal to improve the sealing between the explosion-proof protective film body and the anode terminal and the cathode terminal.

[0008] The inner wall of the explosion-proof protective membrane body is hot-pressed to form multiple grooves, and a reinforcement ring that acts as a buffer is fixed inside each groove. Each reinforcement ring is composed of multiple arc rods, and each arc rod is fixed with multiple reinforcement rods. One end of the multiple reinforcement rods passes through the explosion-proof protective membrane body and extends to the outer surface of the explosion-proof protective membrane body. By cooperating with the reinforcement rods and the arc rods, the strength of the explosion-proof protective membrane body can be improved, and the pressure resistance of the explosion-proof protective membrane body can be improved at the same time.

[0009] The outer wall of the explosion-proof protective membrane is provided with two fixed grooves distributed up and down, and air bags for cushioning are fixed in the two fixed grooves. The outer walls of the two air bags are hot pressed to form multiple protrusions, which can greatly increase the friction of the air bag surface, thereby preventing the battery body from rolling when placed.

[0010] In a preferred embodiment, an outer wall of one side of the explosion-proof protective film body is provided with an installation groove connected to the two fixing grooves, and an inflation nozzle connected to the interior of the airbag is fixed through the side close to the two airbags. Gas can be transported into the airbag with the help of the inflation nozzle, so that the airbag becomes larger and plays a buffering role on the outer wall of the explosion-proof protective film body.

[0011] In a preferred embodiment, both inflation nozzles are threadedly connected with threaded covers, and the threaded covers and inflation nozzles are both arranged in the mounting groove. When the airbag is not inflated, the inflation nozzle and the threaded cover are stored in the mounting groove to avoid the inflation nozzle being exposed and affecting the appearance.

[0012] In a preferred embodiment, multiple reinforcement rings are distributed in a linear array from top to bottom inside the explosion-proof protective film body, and each arc rod and each reinforcement rod are made of thermally conductive rubber. Thermally conductive rubber is a rubber material used to improve thermal conductivity, so that the arc rod and the reinforcement rod have thermal conductivity, thereby improving the heat dissipation speed of the explosion-proof protective film.

[0013] In a preferred embodiment, a plurality of storage cavities are provided in the explosion-proof protective film body, and a dry powder package is stored in each storage cavity. The plurality of storage cavities are distributed in a circular array in the explosion-proof protective film body, and the plurality of storage cavities are spaced apart from the plurality of reinforcement rods. The dry powder package plays a flame retardant and fire extinguishing role when the explosion-proof protective film body burns, thereby improving the safety of the battery body.

[0014] In a preferred embodiment, the two rubber strips are provided with bonding grooves on the surfaces away from each other, and hot melt adhesive is provided in the bonding grooves to improve the firmness between the two rubber strips and the anode terminal and the cathode terminal respectively. Two rubber sealing rings are provided inside the two rubber strips, which are distributed up and down. Multiple rubber sealing rings are respectively put on the outer walls of the anode terminal and the cathode terminal. The use of rubber sealing rings can greatly improve the sealing between the rubber strips and the anode terminal and the cathode terminal.

[0015] In a preferred embodiment, the inner walls on both sides of the explosion-proof protective film are fixedly embedded with thermosensitive elements, the outer walls of the two thermosensitive elements are in contact with the outer wall of the battery body, and the two thermosensitive elements are arranged on the inner side of multiple reinforcement rings. Specifically, the thermosensitive element is a special resistor whose resistance value changes significantly with changes in temperature. This element utilizes the characteristic that the resistivity of certain materials, usually semiconductor materials, changes with temperature, thereby achieving a sensitive response to temperature. Therefore, the temperature of the battery body can be detected in real time with the help of the thermosensitive element, thereby improving the safety of the battery body during use.

[0016] The technical effects and advantages of the utility model are as follows: the utility model uses two airbags to play a buffering and protective role on the outer wall of the explosion-proof protective membrane. At the same time, due to the hot pressing of multiple protrusions on the surface of the airbags, when the battery body is placed flat, the protrusions can increase the friction force and prevent the battery body from rolling and falling, thereby improving the safety of the battery body.

[0017] By cooperating with multiple reinforcement rings and multiple reinforcement rods, a buffering and anti-extrusion effect is played on the outer wall of the battery body, which can further improve the strength of the explosion-proof protective film. At the same time, multiple reinforcement rings and multiple reinforcement rods made of thermally conductive rubber have thermal conductivity, and one end of the multiple reinforcement rods is arranged on the outer wall surface of the explosion-proof protective film, so that the heat in the explosion-proof protective film can be quickly transferred to the outside air.

[0018] By using adhesive strips to cover the outside of the anode terminal and the cathode terminal, the sealing between the explosion-proof protective film and the anode terminal and the cathode terminal can be improved. At the same time, hot melt adhesive is used for bonding to prevent dust and water from entering between the battery body and the explosion-proof protective film and causing corrosion to the battery body.

[0019] The heat of the battery body is detected in real time through the thermistor to prevent the battery body from overheating and affecting safety. At the same time, the thermistor can be connected to the battery body circuit. When the battery body overheats, the thermistor can automatically disconnect the battery body circuit to prevent the battery body from exploding due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a side view of the overall structure of the utility model.

[0022] Figure 3 It is a bottom view of the overall structure of the utility model.

[0023] Figure 4 This is a cross-sectional view of the explosion-proof protective film of the present utility model.

[0024] Figure 5 This is a bottom view of the explosion-proof protective membrane and the collar of the present invention.

[0025] Figure 6 It is a schematic diagram of the collar of the present utility model.

[0026] Figure 7 It is a bottom view of the sleeve of the present utility model.

[0027] Figure 8 It is a bottom view of the airbag of the present utility model.

[0028] Figure 9 This is a structural diagram of the arc rod and reinforcement rod of the utility model.

[0029] The accompanying drawings are marked as follows: 1. Battery body; 2. Explosion-proof protective film; 3. Mounting hole; 4. Rubber strip; 5. Groove; 6. Reinforcement ring; 7. Reinforcement rod; 8. Fixing groove; 9. Airbag; 10. Protrusion; 11. Mounting groove; 12. Inflation nozzle; 13. Threaded cover; 14. Storage cavity; 15. Dry powder bag; 16. Adhesive groove; 17. Rubber sealing ring; 18. Thermistor; 101. Anode terminal; 102. Cathode terminal; 601. Arc rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Refer to the instruction manual Figure 1-9 The utility model provides a battery explosion-proof protective film, including an explosion-proof protective film body 2 sleeved on the outer wall of a battery main body 1, the top and bottom ends of the explosion-proof protective film body 2 are provided with mounting holes 3, and the two mounting holes 3 are fixed with rubber strips 4 inside. The top and bottom ends of the battery main body 1 are respectively provided with an anode terminal 101 and a cathode terminal 102, and the two rubber strips 4 are respectively sleeved on the outer walls of the anode terminal 101 and the cathode terminal 102.

[0032] Next, a plurality of grooves 5 are formed by hot pressing on the inner wall of the explosion-proof protective film body 2, and a reinforcement ring 6 that acts as a buffer is fixed inside each groove 5, and a plurality of reinforcement rods 7 are fixed on each arc rod 601. One end of the plurality of reinforcement rods 7 passes through the explosion-proof protective film body 2 and extends to the outer surface of the explosion-proof protective film body 2. By cooperating with the reinforcement rods 7 and the arc rods 601, the strength of the explosion-proof protective film body 2 can be improved, and the pressure resistance of the explosion-proof protective film body 2 can be improved.

[0033] Multiple reinforcement rings 6 are distributed in a linear array from top to bottom inside the explosion-proof protective film body 2. Each arc rod 601 and each reinforcement rod 7 are made of thermally conductive rubber. Thermally conductive rubber is a rubber material used to improve thermal conductivity, so that the arc rod and the reinforcement rod have thermal conductivity, thereby improving the heat dissipation speed of the explosion-proof protective film.

[0034] In addition, the outer wall of the explosion-proof protective film body 2 is provided with two fixing grooves 8 distributed vertically. Air bags 9 for cushioning are fixed in the two fixing grooves 8 , and multiple protrusions 10 are formed on the outer walls of the two air bags 9 by hot pressing.

[0035] An installation groove 11 connected to the two fixing grooves 8 is provided on the outer wall of one side of the explosion-proof protective film body 2, and an inflation nozzle 12 connected to the interior of the airbag 9 is fixedly penetrated on the side close to the two airbags 9. With the help of the inflation nozzle 12, gas can be transported into the airbag 9, so that the airbag 9 becomes larger and plays a buffering role on the outer wall of the explosion-proof protective film body 2.

[0036] The two inflation nozzles 12 are both threadedly connected with a threaded cover 13, and the threaded cover 13 and the inflation nozzle 12 are both arranged in the installation groove 11. When the airbag 9 is not inflated, the inflation nozzle 12 and the threaded cover 13 are stored in the installation groove 11 to avoid the inflation nozzle 12 being exposed and affecting the appearance.

[0037] When the battery body 1 is not in use, the inflation nozzle 12 can be taken out from the two mounting grooves 11, and after unscrewing the threaded cover 13, the airbag 9 can be inflated to make it larger. The two airbags 9 are used to play a buffering and protective role on the outer wall of the explosion-proof protective film body 2. At the same time, due to the hot pressing to form multiple protrusions 10 on the surface of the airbag 9, when the battery body 1 is placed flat, the protrusions 10 can increase the friction force to prevent the battery body 1 from rolling and falling.

[0038] In addition, the multiple reinforcement rings 6 and multiple reinforcement rods 7 in the explosion-proof protective film body 2 cooperate to play a buffering and anti-extrusion role on the outer wall of the battery main body 1, which can further improve the strength of the explosion-proof protective film body 2. At the same time, since the multiple reinforcement rings 6 and the multiple reinforcement rods 7 are made of heat-conducting rubber, and one end of the multiple reinforcement rods 7 is arranged on the outer wall surface of the explosion-proof protective film body 2, the heat in the explosion-proof protective film body 2 can be quickly conducted to the outside air.

[0039] In order to improve the flame retardancy of the explosion-proof protective film 2, refer to the attached manual. Figure 4 A plurality of storage cavities 14 are provided in the explosion-proof protective film body 2, and a dry powder package 15 is stored in each storage cavity 14. The plurality of storage cavities 14 are distributed in a circular array in the explosion-proof protective film body 2, and the plurality of storage cavities 14 are spaced apart from the plurality of reinforcement rods 7. The dry powder package 15 plays a flame retardant and fire extinguishing role when the explosion-proof protective film body 2 burns, thereby improving the safety of the battery body 1.

[0040] In order to further improve the sealing between the explosion-proof protective film body 2 and the anode terminal 101 and the cathode terminal 102, refer to the attached manual. Figure 6 and 7 , an adhesive groove 16 is provided on the surface of the two rubber strips 4 on the side away from each other, and hot melt adhesive is provided in the adhesive groove 16 to improve the firmness between the two rubber strips 4 and the anode terminal 101 and the cathode terminal 102 respectively. Two rubber sealing rings 17 distributed up and down are provided inside the two rubber strips 4. Multiple rubber sealing rings 17 are respectively covered on the outer walls of the anode terminal 101 and the cathode terminal 102. The use of the rubber sealing rings 17 can greatly improve the sealing between the rubber strips 4 and the anode terminal 101 and the cathode terminal 102.

[0041] In order to improve the safety of the battery body 1 when in use, refer to the instructions attached. Figure 5 , the inner walls on both sides of the explosion-proof protective film body 2 are fixedly embedded with thermal elements 18, the outer walls of the two thermal elements 18 are in contact with the outer wall of the battery body 1, and the two thermal elements 18 are arranged on the inner side of multiple reinforcement rings 6. Specifically, the thermal element 18 is a special resistor, and its resistance value will change significantly with the change of temperature. This element utilizes the characteristic that the resistivity of certain materials, usually semiconductor materials, changes with temperature, thereby achieving sensitive response to temperature.

[0042] The thermistor 18 is used to detect the temperature of the battery body 1 in real time to prevent the battery body 1 from being overheated and affecting safety. At the same time, the thermistor 18 can be connected to the circuit of the battery body 1. When the battery body 1 is overheated, the thermistor 18 can automatically disconnect the circuit of the battery body 1 to prevent the battery body 1 from exploding due to high temperature.

[0043] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery explosion-proof protective film, comprising an explosion-proof protective film body (2) sleeved on the outer wall of a battery body (1), characterized in that: The explosion-proof protective film (2) is provided with mounting holes (3) at the top and bottom, and rubber strips (4) are fixed inside the two mounting holes (3). The battery body (1) is provided with an anode terminal (101) and a cathode terminal (102) at the top and bottom, respectively, and the two rubber strips (4) are respectively sleeved on the outer walls of the anode terminal (101) and the cathode terminal (102). The inner wall of the explosion-proof protective film (2) is hot-pressed to form a plurality of grooves (5), and a reinforcement ring (6) is fixed inside each groove (5) to play a buffering role. ), each reinforcement ring (6) is composed of a plurality of arc-shaped rods (601), and a plurality of reinforcement rods (7) are fixed on each arc-shaped rod (601), and one end of the plurality of reinforcement rods (7) passes through the explosion-proof protective film body (2) and extends to the outer surface of the explosion-proof protective film body (2); the outer wall of the explosion-proof protective film body (2) is provided with two upper and lower fixed grooves (8), and air bags (9) for playing a buffering role are fixed in the two fixed grooves (8), and the outer walls of the two air bags (9) are hot-pressed to form a plurality of protrusions (10).

2. The battery explosion-proof protective film according to claim 1, characterized in that: An installation groove (11) communicating with the two fixing grooves (8) is provided on the outer wall of one side of the explosion-proof protective film body (2), and an inflation nozzle (12) communicating with the interior of the airbag (9) is fixedly penetrated on the adjacent side of the two airbags (9).

3. The battery explosion-proof protective film according to claim 2, characterized in that: The two inflation nozzles (12) are both threadedly connected to a threaded cover (13), and the threaded cover (13) and the inflation nozzle (12) are both arranged in the installation groove (11).

4. The battery explosion-proof protective film according to claim 1, characterized in that: A plurality of reinforcement rings (6) are distributed in a linear array from top to bottom inside the explosion-proof protective film body (2), and each arc-shaped rod (601) and each reinforcement rod (7) are made of heat-conducting rubber.

5. The battery explosion-proof protective film according to claim 1, characterized in that: The explosion-proof protective film body (2) is provided with a plurality of storage cavities (14), each storage cavity (14) stores a dry powder package (15), and the plurality of storage cavities (14) are distributed in a ring array in the explosion-proof protective film body (2), and the plurality of storage cavities (14) are spaced apart from the plurality of reinforcement rods (7).

6. The battery explosion-proof protective film according to claim 1, characterized in that: The two rubber strips (4) are provided with bonding grooves (16) on the surfaces of the sides away from each other. Hot melt adhesive is provided in the bonding grooves (16) for improving the firmness between the two rubber strips (4) and the anode terminal (101) and the cathode terminal (102). Two rubber sealing rings (17) are provided in the interior of the two rubber strips (4) and are distributed up and down. The multiple rubber sealing rings (17) are respectively sleeved on the outer walls of the anode terminal (101) and the cathode terminal (102).

7. The battery explosion-proof protective film according to claim 1, characterized in that: The inner walls of both sides of the explosion-proof protective film (2) are fixedly embedded with thermosensitive elements (18), the outer walls of the two thermosensitive elements (18) are in contact with the outer wall of the battery body (1), and the two thermosensitive elements (18) are arranged on the inner sides of the multiple reinforcement rings (6).

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