CN216818568U

CN216818568U - Battery with explosion-proof function

Info

Publication number: CN216818568U
Application number: CN202122611356.7U
Authority: CN
Inventors: 刘吉虎
Original assignee: Nanjing Huawu Automation Equipment Co ltd
Current assignee: Nanjing Huawu Automation Equipment Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-06-24
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a battery with an explosion-proof function, which belongs to the technical field of batteries and comprises an explosion-proof shell, wherein the inner top wall of the explosion-proof shell is fixedly connected with a battery, the outer side of the battery is sleeved with an air bag, the inner top wall of the explosion-proof shell is fixedly connected with a fire extinguishing box, the bottoms of the fire extinguishing box are fixedly connected with symmetrically distributed air shells, the bottoms of the two air shells are fixedly connected with connecting pipes, the left side of the explosion-proof shell is fixedly connected with a pressure relief valve, and the inner sides of the two air shells are both connected with piston blocks in a sliding manner. The utility model solves the problems of poor safety, single explosion-proof function, poor explosion-proof effect and threat to the safety of human bodies once explosion occurs.

Description

Battery with explosion-proof function

The technical field is as follows:

the utility model belongs to the technical field of batteries, and particularly relates to a battery with an explosion-proof function.

Background art:

the lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a nonaqueous electrolyte solution, and the battery applies the reaction equation as follows: li + MnO2 ═ LiMnO2, the reaction is a redox reaction discharge, and in the past, lithium batteries have not been used for a long time because of the very active chemical nature of lithium metal, very high requirements for processing, storage and use, and environmental requirements, and lithium batteries have now become mainstream with the development of modern science. Compared with the traditional lead-acid storage battery, the lithium battery has obvious advantages, the energy ratio of the lithium battery is higher, the service life of the lithium battery is longer, the rated voltage of the lithium battery is higher, the self-discharge rate of the lithium battery is lower, the lithium battery is lighter in weight and more energy-saving and environment-friendly, a plurality of advantages of the lithium battery are that the lithium battery is widely applied to all corners of life, the lithium battery is mostly used in the fields of mobile phones, digital cameras, electric vehicles and the like at present, products in the fields can be rapidly developed due to the appearance of the lithium battery, but the development of the products is also limited due to the defects of the lithium battery, and the common defects of the lithium battery are as follows: lithium batteries are relatively poor in safety and prone to explosion.

Under the influence of adverse factors such as high temperature, short circuit, overcharge, lithium ion battery leads to inside certain gas that produces of lithium ion battery to make the inside pressure increase of lithium ion battery, and then make lithium ion battery get the casing and take place the swell and even explode, there is great potential safety hazard, current lithium ion battery security is relatively poor, explosion-proof function is comparatively single, lead to explosion-proof not good, in case take place the blasting, threaten to the safety of the person, provide a battery with explosion-proof function from this.

The utility model has the following contents:

the utility model provides a battery with an explosion-proof function, and aims to solve the problems that the safety is poor, the explosion-proof function is single, the explosion-proof effect is poor, and once explosion happens, the personal safety is threatened.

The utility model provides a battery with an explosion-proof function, which comprises an explosion-proof shell, wherein the inner top wall of the explosion-proof shell is fixedly connected with the battery, the outer side of the battery is sleeved with an air bag, the inner top wall of the explosion-proof shell is fixedly connected with a fire extinguishing box, the bottom of the fire extinguishing box is fixedly connected with symmetrically distributed air shells, the bottoms of the two air shells are both fixedly connected with connecting pipes, the left side of the explosion-proof shell is fixedly connected with a pressure relief valve, the inner sides of the two air shells are both connected with piston blocks in a sliding manner, the sides, close to each other, of the two piston blocks are both fixedly connected with first racks, the tops of the two first racks are both meshed with gears, the outer sides of the two gears are both meshed with second racks, the tops of the two second racks are both fixedly connected with cover plates, the top left side of the cover plate on the left side is fixedly connected with a contact head, and the bottom of the fire extinguishing box is fixedly connected with an electric plate, and a blocking mechanism is arranged at the top of the explosion-proof shell.

Further, the apron is with the bottom sliding connection of case of putting out a fire, the top fixedly connected with of apron is located the first slider of contact front and back both sides, the first spout that matches with first slider is seted up to the bottom of case of putting out a fire, the gasbag adopts fire-retardant cloth to make.

Through adopting above-mentioned technical scheme, utilize the apron to plug up the blanking mouth of case of putting out a fire under the battery normal condition, prevent that the liquid in the case of putting out a fire from flowing in battery normal use, utilize first slider can guarantee the stable removal of apron.

Further, the blanking mouth of symmetric distribution is seted up to the bottom of case of putting out a fire, the bottom and the gasbag of connecting pipe are linked together, the longitudinal length of apron is greater than the longitudinal length of blanking mouth, the middle part fixedly connected with bull stick of gear, the bull stick rotates with the lateral wall of explosion-proof shell to be connected.

Through adopting above-mentioned technical scheme, utilize the connecting pipe to drive the removal of piston block, first rack in squeezing into the air shell with gas when the battery inflation, and then make the gear action drive the removal of second rack, apron, can open the blanking mouth and make the liquid outflow in the fire extinguishing box put out a fire and prevent the explosion.

Further, the blocking mechanism comprises a shell, a limiting rod, a support frame, first electric connectors, a connecting wire, second electric connectors, clamping rods, first springs, support tables, an electromagnet, second springs and magnetic blocks, the shell is fixedly connected with the top of the explosion-proof shell, the limiting rod is fixedly connected with the inner bottom wall of the shell, the support frame is connected with the limiting rod in a sliding mode, the first electric connectors are fixedly connected with two branch ends of the support frame respectively, the connecting wire is located between the two first electric connectors and is electrically connected with the two first electric connectors, the second electric connectors are fixedly connected with the side wall of the shell respectively and are symmetrically distributed, the clamping rods are symmetrically distributed and are fixedly connected with the outer side of the bottom of the support frame, the first springs are fixedly connected with the bottoms of the two clamping rods respectively, and the support tables are fixedly connected with the left side and the left side of the shell respectively, The two electromagnets are fixedly connected with the two supporting tables respectively, one ends, far away from each other, of the second springs are fixedly connected with one sides, close to the two electromagnets respectively, and the two magnetic blocks are fixedly connected with one ends, close to the two second springs, of the magnetic blocks respectively.

By adopting the technical scheme, the blocking mechanism can play a role in the continuous discharging or charging process of the battery, and can cut off the power and stop in time when the bulge of the battery explodes in the charging and discharging process of the battery, thereby greatly reducing the explosion probability of the battery.

Furthermore, a second sliding block is fixedly connected to the bottom of the magnetic block, a second sliding groove matched with the second sliding block is formed in the outer side of the supporting table, a clamping groove matched with the clamping rod is formed in the top of the supporting table, and the clamping groove is located below the magnetic block.

Through adopting above-mentioned technical scheme, utilize the second slider can restrict the magnetic path, guarantee the stable removal of magnetic path to draw-in groove and magnetic path cooperation can guarantee that normal circuit intercommunication can be guaranteed to charge and discharge with kelly, support frame restriction, guarantee normal use in-process, block the mechanism.

Furthermore, the electromagnet and the magnetic block have opposite magnetism, and the electric plate, the contact head and the electromagnet are electrically connected.

Through adopting above-mentioned technical scheme, utilize the electromagnet, when the battery swell, the apron removes, and contact head and electroplax contact, the electro-magnet circular telegram produces magnetism, adsorbs the magnetic path and removes to make the kelly break away from and rise under the effect of first spring and make first electric connector and second electric connector break away from, cuts off the power supply, prevents to last the charge-discharge to produce bigger influence to the battery when the battery swell and explodes.

Furthermore, the bottom of the first spring is fixedly connected with the inner bottom wall of the shell, a sliding hole matched with the limiting rod is formed in the bottom of the supporting frame, the second electric connector on the right side is electrically connected with an external lead, and the second electric connector on the left side is electrically connected with a lead of a battery.

Through adopting above-mentioned technical scheme, utilize the gag lever post to guarantee the stable rising of support frame, utilize first spring can guarantee when the kelly does not have the restriction, first electric connector breaks away from with the second electric connector, utilizes the charge-discharge wire electricity of two second electric connectors and battery to be connected, communicates, can in time cut off the power supply like this when the battery swell, improves the security.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

1. according to the utility model, through the matching of the air bag, the connecting pipe, the air shell, the cover plate and the like, when the battery swells, gas in the air bag is extruded, the gas enters the air shell through the connecting pipe, the piston block and the first rack are further pushed to move, the first rack drives the gear to rotate, the gear drives the second rack and the cover plate to move, in the cover plate moving process, the blanking port opens liquid in the fire extinguishing box to fall, the battery is effectively prevented from exploding after swelling, and the fire-retardant effect is realized by matching with the air bag.

2. According to the utility model, through the matching of the first electric connector, the second electric connector, the support frame, the contact head and the like, when the contact head is contacted with the electric plate, the electromagnet is electrified to drive the magnetic blocks to move, so that the two magnetic blocks move towards the directions away from each other, at the moment, the limitation on the clamping rod disappears, the support frame is lifted under the action of the first spring, the first electric connector is separated from the second electric connector, the power is cut off in time, the situation that the battery is exploded due to the fact that the battery is continuously charged and discharged when the battery bulges is prevented, and the safety is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Description of the drawings:

the accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Reference numerals: 1. an explosion-proof shell; 2. a battery; 3. an air bag; 4. a fire extinguishing box; 5. a connecting pipe; 6. an air shell; 7. a pressure relief valve; 8. a piston block; 9. a first rack; 10. a gear; 11. A second rack; 12. a cover plate; 13. a contact head; 14. an electric board; 15. a blocking mechanism; 151. A housing; 152. a limiting rod; 153. a support frame; 154. a first electrical connector; 155. A connecting wire; 156. a second electrical connector; 157. a clamping rod; 158. a first spring; 159. a support table; 1510. an electromagnet; 1511. a second spring; 1512. a magnetic block.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.

As shown in figures 1-3, the utility model provides a battery with an explosion-proof function, which comprises an explosion-proof shell 1, wherein the inner top wall of the explosion-proof shell 1 is fixedly connected with a battery 2, the outer side of the battery 2 is sleeved with an air bag 3, the inner top wall of the explosion-proof shell 1 is fixedly connected with a fire extinguishing box 4, the bottom of the fire extinguishing box 4 is fixedly connected with symmetrically distributed air shells 6, the bottoms of the two air shells 6 are respectively and fixedly connected with a connecting pipe 5, the left side of the explosion-proof shell 1 is fixedly connected with a pressure relief valve 7, the inner sides of the two air shells 6 are respectively and slidably connected with a piston block 8, the sides, close to each other, of the two piston blocks 8 are respectively and fixedly connected with a first rack 9, the tops of the two first racks 9 are respectively engaged with a gear 10, the outer sides of the two gears 10 are respectively engaged with a second rack 11, the tops of the two second racks 11 are respectively and fixedly connected with a cover plate 12, the top left side of the cover plate 12 on the left side is fixedly connected with a contact head 13, the bottom of the fire extinguishing box 4 is fixedly connected with an electric plate 14, and the top of the explosion-proof shell 1 is provided with a blocking mechanism 15.

Apron 12 and fire extinguishing box 4's bottom sliding connection, the top fixedly connected with of apron 12 is located before contact 13, the first slider of back both sides, fire extinguishing box 4's bottom is seted up the first spout that matches with first slider, gasbag 3 adopts fire-retardant cloth to make, utilize apron 12 to plug up the blanking mouth of fire extinguishing box 4 under battery 2 normal conditions, prevent that the liquid in fire extinguishing box 4 from flowing in battery 2 normal use, utilize first slider can guarantee apron 12's steady removal.

The blanking mouth of symmetric distribution is seted up to the bottom of case 4 that goes out a fire, the bottom of connecting pipe 5 is linked together with gasbag 3, the longitudinal length of apron 12 is greater than the longitudinal length of blanking mouth, the middle part fixedly connected with bull stick of gear 10, the bull stick rotates with the lateral wall of explosion-proof shell 1 to be connected, utilize connecting pipe 5 to drive piston block 8 in the casing 6 with gas extrusion when battery 2 inflation, the removal of first rack 9, and then make gear 10 effect drive second rack 11, the removal of apron 12, can open the liquid outflow that makes in the case 4 that goes out a fire with the blanking mouth and put out a fire and prevent the explosion.

The blocking mechanism 15 includes a housing 151, a limiting rod 152, a support frame 153, first electrical connectors 154, a connecting wire 155, second electrical connectors 156, clamping rods 157, first springs 158, support tables 159, an electromagnet 1510, second springs 1511 and a magnet 1512, the housing 151 is fixedly connected with the top of the explosion-proof housing 1, the limiting rod 152 is fixedly connected with the inner bottom wall of the housing 151, the support frame 153 is slidably connected with the limiting rod 152, the two first electrical connectors 154 are respectively fixedly connected with two branch ends of the support frame 153, the connecting wire 155 is located between the two first electrical connectors 154 and is electrically connected with the two first electrical connectors 154, the two second electrical connectors 156 are respectively fixedly connected with the side wall of the housing 151 and are symmetrically distributed, the two clamping rods 157 are symmetrically distributed and are fixedly connected with the outer side of the bottom of the support frame 153, the two first springs 158 are respectively fixedly connected with the bottom of the two clamping rods 157, the two support tables 159 are respectively connected with the left side wall of the housing 151, the clamping rods 157 are respectively, Two wall fixed connection on the right side, two electro-magnets 1510 respectively with two brace table 159 fixed connection, the one end that two second springs 1511 kept away from each other respectively with the one side fixed connection that two electro-magnets 1510 are close to each other, two magnetic path 1512 respectively with the one end fixed connection that two second springs 1511 are close to each other, utilize to block mechanism 15 and can play a role in the in-process that battery 2 lasts discharge or charge, when the charge-discharge in-process of battery 2 takes place the explosion of battery 2 swell, can cut off the power supply, in time stop, greatly reduce the probability that the explosion of battery 2 takes place.

The bottom fixedly connected with second slider of magnetic block 1512, the second spout that matches with the second slider is seted up in the outside of supporting bench 159, the draw-in groove that matches with kelly 157 is seted up at the top of supporting bench 159, the draw-in groove is located the below of magnetic block 1512, utilize the second slider to restrict magnetic block 1512, guarantee the stable removal of magnetic block 1512, and the draw-in groove can restrict kelly 157, support frame 153 with magnetic block 1512 cooperation, guarantee in the normal use, block mechanism 15 and can guarantee that normal circuit intercommunication carries out the charge-discharge.

The electromagnet 1510 is opposite to the magnetic block 1512 in magnetism, the electric plate 14 and the contact head 13 are electrically connected with the electromagnet 1510, and by using the electromagnet 1510, when the battery 2 bulges, the cover plate 12 moves, the contact head 13 contacts with the electric plate 14, the electromagnet 1510 is electrified to generate magnetism, the adsorption magnetic block 1512 moves to enable the clamping rod 157 to be separated from the first electric connector 154 and the second electric connector 156 to be separated from each other under the action of the first spring 158, so that power is cut off, and explosion caused by larger influence of continuous charging and discharging on the battery 2 during bulging of the battery 2 is prevented.

The bottom of first spring 158 and the interior diapire fixed connection of shell 151, the sliding hole that matches with gag lever post 152 is seted up to the bottom of support frame 153, the second electric connector 156 that is located the right side is connected with external conductor electricity, the wire that is located left second electric connector 156 and battery 2 is connected, utilize gag lever post 152 can guarantee the stable rising of support frame 153, utilize first spring 158 can guarantee when kelly 157 does not have the restriction, first electric connector 154 breaks away from with second electric connector 156, utilize two second electric connectors 156 to be connected with battery 2's charge-discharge wire electricity, communicate, can in time cut off the power supply when battery 2 bulges like this, and the safety is improved.

The implementation mode is specifically as follows: when the battery 2 bulges, the gas in the air bag 3 is extruded, the gas enters the air shell 6 through the connecting pipe 5, and then the piston block 8 is pushed to move, the piston block 8 moves to drive the first rack 9 to move, the first rack 9 drives the gear 10 to rotate, the gear 10 drives the second rack 11 and the cover plate 12 to move, in the moving process of the cover plate 12, the blanking port is opened, the liquid in the fire extinguishing box 4 falls, the explosion after the battery 2 bulges is effectively prevented, the air bag 3 is matched to have the flame retardant effect, in addition, the contact head 13 is driven in the moving process of the cover plate 12, when the contact head 13 is contacted with the electric plate 14, the electromagnet 1510 is electrified to drive the movement of the magnetic blocks 1512, the two magnetic blocks 1512 move in the direction of being far away from each other, at the moment, the limitation on the clamping rod 157 disappears, the supporting frame 153 is lifted under the action of the first spring 158, and then the first electric connector 154 is separated from the second electric connector 156, and the power is cut off in time, so that the situation that the probability of explosion of the battery 2 is increased by continuously charging and discharging the battery 2 when the battery 2 swells is prevented, and the safety is improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The battery with the explosion-proof function comprises an explosion-proof shell (1) and is characterized in that the inner top wall of the explosion-proof shell (1) is fixedly connected with a battery (2), the outer side of the battery (2) is sleeved with an air bag (3), the inner top wall of the explosion-proof shell (1) is fixedly connected with a fire extinguishing box (4), the bottom of the fire extinguishing box (4) is fixedly connected with symmetrically distributed air shells (6), the bottoms of the two air shells (6) are both fixedly connected with a connecting pipe (5), the left side of the explosion-proof shell (1) is fixedly connected with a pressure relief valve (7), the inner sides of the two air shells (6) are both slidably connected with piston blocks (8), one sides of the two piston blocks (8) close to each other are both fixedly connected with first racks (9), the tops of the two first racks (9) are both meshed with gears (10), the outer sides of the two gears (10) are both meshed with second racks (11), two equal fixedly connected with apron (12) in top of second rack (11) is located the left fixedly connected with contact (13) in top left side of apron (12), the bottom fixedly connected with electroplax (14) of fire extinguishing chamber (4), the top of explosion-proof shell (1) is provided with blocks mechanism (15).

2. The battery with an explosion-proof function according to claim 1, characterized in that: apron (12) and the bottom sliding connection of case of putting out a fire (4), the top fixedly connected with of apron (12) is located the first slider of contact head (13) preceding, back both sides, the first spout that matches with first slider is seted up to the bottom of case of putting out a fire (4), gasbag (3) adopt fire-retardant cloth to make.

3. The battery with an explosion-proof function according to claim 1, characterized in that: the blanking mouth of symmetric distribution is seted up to the bottom of case of putting out a fire (4), the bottom and gasbag (3) of connecting pipe (5) are linked together, the longitudinal length of apron (12) is greater than the longitudinal length of blanking mouth, the middle part fixedly connected with bull stick of gear (10), the bull stick rotates with the lateral wall of explosion-proof shell (1) and is connected.

4. The battery with an explosion-proof function according to claim 1, characterized in that: the blocking mechanism (15) comprises a shell (151), a limiting rod (152), a support frame (153), first electric connectors (154), a connecting wire (155), a second electric connector (156), a clamping rod (157), a first spring (158), a support table (159), an electromagnet (1510), a second spring (1511) and a magnetic block (1512), wherein the shell (151) is fixedly connected with the top of the explosion-proof shell (1), the limiting rod (152) is fixedly connected with the inner bottom wall of the shell (151), the support frame (153) is connected with the limiting rod (152) in a sliding manner, the two first electric connectors (154) are respectively fixedly connected with two branch ends of the support frame (153), the connecting wire (155) is positioned between the two first electric connectors (154) and is electrically connected with the two first electric connectors (154), the two second electric connectors (156) are respectively fixedly connected with the side wall of the shell (151) and are symmetrically distributed, two kelly (157) symmetric distribution and with the bottom outside fixed connection of support frame (153), two first spring (158) respectively with the bottom fixed connection of two kellies (157), two prop up the platform (159) respectively with the left and right both sides wall fixed connection of shell (151), two electro-magnet (1510) respectively with two prop up platform (159) fixed connection, two one end that second spring (1511) kept away from each other respectively with the one side fixed connection that two electro-magnet (1510) are close to each other, two magnetic path (1512) respectively with the one end fixed connection that two second spring (1511) are close to each other.

5. The battery with an explosion-proof function according to claim 4, characterized in that: the bottom of the magnetic block (1512) is fixedly connected with a second sliding block, a second sliding groove matched with the second sliding block is formed in the outer side of the supporting platform (159), a clamping groove matched with the clamping rod (157) is formed in the top of the supporting platform (159), and the clamping groove is located below the magnetic block (1512).

6. The battery with an explosion-proof function according to claim 4, characterized in that: the electromagnet (1510) and the magnetic block (1512) are opposite in magnetism, and the electric plate (14), the contact head (13) and the electromagnet (1510) are electrically connected.

7. The battery with an explosion-proof function according to claim 4, characterized in that: the bottom of the first spring (158) is fixedly connected with the inner bottom wall of the shell (151), a sliding hole matched with the limiting rod (152) is formed in the bottom of the supporting frame (153), the second electric connector (156) located on the right side is electrically connected with an external lead, and the second electric connector (156) located on the left side is electrically connected with a lead of the battery (2).