CN114824575A - Explosion-proof lithium battery - Google Patents
Explosion-proof lithium battery Download PDFInfo
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- CN114824575A CN114824575A CN202210717148.1A CN202210717148A CN114824575A CN 114824575 A CN114824575 A CN 114824575A CN 202210717148 A CN202210717148 A CN 202210717148A CN 114824575 A CN114824575 A CN 114824575A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium batteries, in particular to an explosion-proof lithium battery, which comprises a lithium battery body, wherein two communicating components are arranged on the upper end surface of the lithium battery body, each communicating component comprises a box body, a first electric connecting piece and a second electric connecting piece are arranged on the outer side of each box body, the two second electric connecting pieces are respectively communicated with the anode and the cathode of the lithium battery body, at least two communicating pieces which are vertically arranged are arranged in each box body, each communicating piece comprises two electric connecting blocks, elastic plates are arranged on the opposite sides of the two electric connecting blocks, the other ends of the elastic plates are downwards arranged, connecting blocks are arranged at the other ends of the elastic plates, first air cylinders are arranged on the opposite sides of the two elastic plates, and the two connecting blocks are connected through fuse strips. According to the invention, when the lithium battery body is used, the temperature rises to disconnect the lithium battery body from the circuit, then the lithium battery body is subjected to heat dissipation, and then the lithium battery body can be automatically communicated with the circuit, so that the use of the lithium battery body is not influenced.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to an explosion-proof lithium battery.
Background
With the development of microelectronic technology, devices are increasing, high requirements are put on power supplies, and lithium batteries are widely used.
If patent with application number CN201820992460.0, an explosion-proof lithium battery, including the lithium cell, its characterized in that still includes the casing of lithium cell, the explosion-proof hole, lithium cell state sensor module, semiconductor refrigeration module, the screw, a support, the PCB board, explosion-proof case, the fan, netted trompil, this application's explosion-proof lithium cell, when gathering the data of lithium cell casing surface temperature and pressure through lithium cell state sensor module and surpassing the safe range, in time open the explosion-proof hole through the PCB board, release the gas and release the pressure in the lithium cell casing, open the switch of semiconductor refrigeration module through the PCB board, semiconductor refrigeration cools down for the lithium cell casing, the fan operates simultaneously, accelerate the hot-air to discharge from the trompil of explosion-proof case, in time cool down the pressure release like this, avoid the risk of lithium cell explosion; however, the applicant finds that the lithium battery is not disconnected from the connection circuit after the heating phenomenon occurs, and the lithium battery still works continuously, so that the temperature of the lithium battery is still difficult to reduce, and the lithium battery still has the risk of explosion.
Disclosure of Invention
In view of this, an object of the present invention is to provide an explosion-proof lithium battery, so as to solve the problem that the temperature of the lithium battery body 1 is difficult to decrease, and further there is a risk of explosion of the lithium battery.
Based on the above purpose, the invention provides an explosion-proof lithium battery, which comprises a lithium battery body, wherein two communicating components are arranged on the upper end surface of the lithium battery body, each communicating component comprises a box body, a first electric connecting piece and a second electric connecting piece are arranged on the outer side of each box body, the two second electric connecting pieces are respectively communicated with the anode and the cathode of the lithium battery body, at least two vertically-arranged communicating parts are arranged in each box body, each communicating part comprises two electric connecting blocks which are arranged in pairs and connected with the box bodies, the two electric connecting blocks at the uppermost end in each box body are respectively connected with the first electric connecting piece and the second electric connecting piece, elastic plates are arranged on the opposite sides of the two electric connecting blocks, the other ends of the elastic plates are arranged downwards, connecting blocks are arranged at the other ends of the elastic plates, communicating cavities are arranged in the elastic plates, conductive pieces are arranged in the communicating cavities, the two ends of the conductive pieces are respectively connected with the electric connecting blocks and the connecting blocks, a first air cylinder is arranged on one side, opposite to the two elastic plates, of each elastic plate, a first piston is arranged in each first air cylinder in a sliding mode, each first piston is hinged to the corresponding elastic plate through a first moving rod, an air outlet is communicated with each first air cylinder, and the blowing direction of the air outlet points to the corresponding power connection block; the two connecting blocks are connected through a fuse wire belt, and when the fuse wire belt tensions the two connecting blocks, the elastic plate is bent; after the fuse wire between the two connecting blocks is fused, the two elastic plates are oppositely bounced, and the two connecting blocks connected to the two elastic plates respectively contact the two connecting blocks on the adjacent connecting assembly.
Optionally, a second air cylinder connected with the box body is arranged on one side of the first air cylinder, a first heat dissipation plate is arranged on one side in the second air cylinder, the first heat dissipation plate is connected with the power connection block through a first heat conduction piece, an air bag is communicated with one side, provided with the first heat dissipation plate, of the second air cylinder through an air through pipe, and the air bag is located between the elastic plate and the box body.
After the fuse wire area is blown, the temperature of connecing the electricity piece is conducted to first heating panel, has promoted the temperature of the interior air of second inflator, and hot-air enters into the gasbag and expands, has increased and has linked to the electricity piece and be close to connect the time of electricity piece, prolonged the time of lithium cell body and circuit disconnection, improve the security that lithium cell body used, simultaneously after the temperature reduces lithium cell body can communicate with the circuit.
Optionally, a heated expansion piece is arranged on the other side in the second air cylinder, the heated expansion piece is connected with the power connection block through a second heat conduction piece, and a second piston in sliding connection with the second air cylinder is connected to one side of the heated expansion piece.
Optionally, be provided with first sub-magnet on the electricity piece, be provided with the first mother magnet that sets up with the cooperation of first sub-magnet on the even electricity piece.
Optionally, the inner side wall of the first air cylinder is connected with the first piston through a first elastic spring, and an antimagnetic coating is coated on the outer side of the first elastic spring.
Optionally, the inner side wall of one side of the first air cylinder connected with the box body is provided with a second sub magnet, and the first piston is provided with a second main magnet matched with the second sub magnet.
Optionally, a casing is arranged outside the lithium battery body, an outer heat dissipation hole is formed in a side wall of the casing, a second heat dissipation plate located on one side of the outer heat dissipation hole is arranged in the casing, the second heat dissipation plate is connected with the inner side wall of the casing in a sliding manner, an inner heat dissipation hole adaptive to the outer heat dissipation hole is formed in the second heat dissipation plate, the second heat dissipation plate is connected with a driving moving member, the driving moving member is used for controlling the second heat dissipation plate to move up and down, and when the driving moving member controls the second heat dissipation plate to move, the inner heat dissipation hole is communicated with the outer heat dissipation hole and the air in the casing is communicated with the outside air; when the driving moving piece controls the second heat dissipation plate to move, the inner heat dissipation hole is not communicated with the outer heat dissipation hole, air in the shell is not communicated with the outer air, and the lithium battery body in the shell is in a closed state.
Optionally, one side of the second heat dissipation plate, which is opposite to the lithium battery body, is provided with a plurality of fan plates.
Optionally, a cavity is formed in the side wall of the shell, inert gas is stored in the cavity, the cavity is communicated with the outer side wall of the shell through an air inlet pipe, the cavity is communicated with the inner side wall of the shell through an air outlet pipe, a third piston is arranged in the cavity, the air inlet pipe and the air outlet pipe are located on one side of the third piston, the other side of the third piston is connected with a driving piece, the driving piece is used for controlling the third piston to move up and down, the driving piece is connected with a temperature control switch arranged in the box body, the temperature in the box body reaches a set temperature value, the temperature control switch is turned off, and the driving piece controls the third piston to move so that the inert gas is input into the shell.
Optionally, a pressure switch connected with the driving moving member is arranged in the cavity, the pressure switch is located between the air inlet pipe and the third piston, after the driving member controls the third piston to move and inputs the inert gas into the shell, the third piston contacts the pressure switch to close the pressure switch, the driving moving member is started at the moment, the driving moving member controls the second heat dissipation plate to move so that the inner heat dissipation holes are not communicated with the outer heat dissipation holes, air in the shell is not communicated with the outer air, and the lithium battery body in the shell is in a closed state.
The invention has the beneficial effects that: the invention provides an explosion-proof lithium battery, two first electric connecting pieces on a lithium battery body are connected into a circuit, the lithium battery body is in a working state, when the fuse wire in the communication piece at the uppermost end in the box body is blown, the current in the circuit is overlarge at the moment, the power connection block and the power connection block are in a heating state, the two elastic plates are oppositely flicked at the moment, and the two connecting blocks respectively connected with the two elastic plates are contacted with the two connecting blocks on the communicating component which is adjacently arranged, when the elastic plates are oppositely bounced open, the two first moving rods are driven to move oppositely, the first piston moves in the first air cylinder, air in the first air cylinder is blown to the connecting block through the air outlet, so that the heat dissipation of the connecting block is facilitated, after the lithium battery body is disconnected and communicated with the circuit, the temperature of the lithium battery body is reduced, and then the risk of explosion of the lithium battery is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a communication assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is an enlarged schematic view of the structure at B in FIG. 2;
FIG. 5 is an enlarged schematic view of the structure at C in FIG. 2;
fig. 6 is a partial internal structural diagram of the housing according to the embodiment of the present invention.
In the figure: 1. a lithium battery body; 2. a communicating component; 3. a first electric connecting piece; 4. a second electric connecting piece; 5. a communicating member; 6. a box body; 7. an elastic plate; 8. a power connection block; 9. a connection block; 10. a fuse band; 11. a communicating cavity; 12. a conductive member; 13. a first gas cylinder; 14. a first piston; 15. an air bag; 16. a gas-through pipe; 17. a first heat dissipation plate; 18. a first movable bar; 19. a housing; 20. a first heat-conducting member; 21. a second heat-conducting member; 22. an outer heat dissipation aperture; 23. internal heat dissipation holes; 24. a second heat dissipation plate; 25. an air outlet pipe; 26. a second gas cylinder; 27. a second piston; 28. a cavity; 29. a third piston; 30. an air outlet; 31. a heat-expandable member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1, 2, 3 and 4, an explosion-proof lithium battery comprises a lithium battery body 1, two communicating components 2 are arranged on the upper end surface of the lithium battery body 1, each communicating component 2 comprises a box body 6, a first electric connecting piece 3 and a second electric connecting piece 4 are arranged on the outer side of each box body 6, the two second electric connecting pieces 4 are respectively communicated with the positive electrode and the negative electrode of the lithium battery body 1, at least two vertically-arranged communicating pieces 5 are arranged in each box body 6, each communicating piece 5 comprises two electric connecting blocks 8 which are arranged in pairs and connected with the box bodies 6, the two electric connecting blocks 8 at the uppermost end in each box body 6 are respectively connected with the first electric connecting piece 3 and the second electric connecting pieces 4, an elastic plate 7 is arranged on one side, opposite to each other, of the two electric connecting blocks 8, the other end of the elastic plate 7 is arranged downwards, a connecting block 9 is arranged at the other end of the elastic plate 7, and a communicating cavity 11 is arranged in the elastic plate 7, a conductive piece 12 is arranged in the communicating cavity 11, two ends of the conductive piece 12 are respectively connected with the electric connection block 8 and the electric connection block 9, one sides of the two elastic plates 7 which are opposite to each other are provided with first air cylinders 13, first pistons 14 are arranged in the first air cylinders 13 in a sliding manner, the first pistons 14 are hinged with the elastic plates 7 through first moving rods 18, the first air cylinders 13 are communicated with an air outlet 30 and an air inlet, the air inlet is communicated with the external environment through an air inlet channel, and the blowing direction of the air outlet 30 points to the electric connection block 9; the two connecting blocks 9 are connected through a fuse belt 10, and when the two connecting blocks 9 are tensioned by the fuse belt 10, the elastic plate 7 is bent; after the fuse wire 10 between the two connecting blocks 9 is fused, the two elastic plates 7 are oppositely bounced, and the two connecting blocks 9 respectively connected on the two elastic plates 7 contact the two connecting blocks 8 on the communicating component 2 adjacently arranged on the two connecting blocks.
When the fuse wire belt 10 in the uppermost communicating piece 5 in the box body 6 is blown, which indicates that the current in the circuit is too large, the power connection block 8 and the power connection block 9 are in a heating state, the two elastic plates 7 spring open oppositely, the two power connection blocks 9 connected to the two elastic plates 7 respectively contact the two power connection blocks 8 on the adjacent communicating component 2, and the elastic plates 7 spring open oppositely, the two first moving rods 18 are driven to move oppositely, the first piston 14 moves in the first air cylinder 13, air in the first air cylinder 13 is blown to the power connection blocks 9 through the air outlet 30, so that the heat dissipation of the power connection blocks 9 is facilitated, the temperature of the lithium battery body 1 is reduced after the lithium battery body 1 is disconnected and communicated with the circuit, and the explosion risk of the lithium battery is further reduced, make the user simultaneously when using lithium cell body 1, the temperature risees the intercommunication of disconnection lithium cell body 1 and circuit, then dispels the heat to lithium cell body 1, later can be automatic with the intercommunication of lithium cell body 1 and circuit, do not influence the use of lithium cell body 1.
As shown in fig. 5, in order to disconnect the lithium battery body 1 from the circuit before the temperature of the lithium battery body 1 is not reduced, and improve the safety of the lithium battery body 1 in use, the second air cylinder 26 connected with the box body 6 is arranged on one side of the first air cylinder 13, the first heat dissipation plate 17 is arranged on one side of the second air cylinder 26, the first heat dissipation plate 17 is connected with the power connection block 8 through the first heat conduction member 20, the air bag 15 is communicated with the air tube 16 on one side of the second air cylinder 26 provided with the first heat dissipation plate 17, the air bag 15 is arranged between the elastic plate 7 and the box body 6, after the fuse wire belt 10 is burnt off, the temperature of the first heat dissipation plate 17 is conducted to the power connection block 8, the temperature of the air in the second air cylinder 26 is raised, the hot air enters the air bag 15 to expand, the time that the power connection block 9 is close to the power connection block 8 is increased, the time that the lithium battery body 1 is disconnected from the circuit is prolonged, and the safety of the lithium battery body 1 in use is improved, meanwhile, the lithium battery body 1 can be communicated with a circuit after the temperature is reduced.
In order to further break the communication between the lithium battery body 1 and the circuit before the temperature of the lithium battery body 1 is not reduced and improve the safety of the use of the lithium battery body 1, the other side in the second air cylinder 26 is provided with a heated expansion piece 31, the heated expansion piece 31 is connected with the power connection block 8 through a second heat conduction piece 21, one side of the heated expansion piece 31 is connected with a second piston 27 in sliding connection with the second air cylinder 26, after the fuse wire 10 is blown, the heated expansion piece 31 conducts the temperature to the power connection block 8, the heated expansion piece 31 drives the second piston 27 to slide in the second air cylinder 26 under the heat expansion, the heat air in the second air cylinder 26 is input into the air bag 15, the expansion efficiency of the air bag 15 is accelerated, and the safety of the use of the lithium battery body 1 is further improved.
In order to contact and connect the power connection block 8 and the power connection block 9, a first sub-magnet is arranged on the power connection block 8, a first main magnet matched with the first sub-magnet is arranged on the power connection block 9, and the first sub-magnet and the first main magnet are attracted in the same polarity.
In order to improve the air outlet frequency of the air outlet 30 in the first air cylinder 13 and further reduce the temperature of the lithium battery body 1, the inner side wall of the first air cylinder 13 is connected with the first piston 14 through a first elastic spring, and the outer side of the first elastic spring is coated with an antimagnetic coating.
In order to improve the air output of the air outlet 30 in the first air cylinder 13, a second sub-magnet is arranged on the inner side wall of one side of the first air cylinder 13 connected with the box body 6, a second main magnet matched with the second sub-magnet is arranged on the first piston 14, and the second sub-magnet and the second main magnet are attracted in the same polarity.
As shown in fig. 1, in order to further perform heat dissipation treatment on the lithium battery body 1, a casing 19 is disposed outside the lithium battery body 1, an outer heat dissipation hole 22 is formed in a side wall of the casing 19, a second heat dissipation plate 24 located on one side of the outer heat dissipation hole 22 is disposed in the casing 19, the second heat dissipation plate 24 is slidably connected with an inner side wall of the casing 19, an inner heat dissipation hole 23 adapted to the outer heat dissipation hole 22 is formed in the second heat dissipation plate 24, the second heat dissipation plate 24 is connected with a driving moving member, the driving moving member is used for controlling the second heat dissipation plate 24 to move up and down, when the driving moving member controls the second heat dissipation plate 24 to move, the inner heat dissipation hole 23 is communicated with the outer heat dissipation hole 22, and is used for communicating air in the casing 19 with outside air; when the driving moving part controls the second heat dissipation plate 24 to move, the inner heat dissipation holes 23 are not communicated with the outer heat dissipation holes 22, air and outer air in the shell 19 are not communicated, the lithium battery body 1 in the shell 19 is in a closed state, the driving moving part can be driven, the second heat dissipation plate 24 is made to move up and down, the inner heat dissipation holes 23 are communicated with the outer heat dissipation holes 22, the heat exchange efficiency of the air and the outer air in the shell 19 is improved, and the heat dissipation efficiency of the lithium battery body 1 is improved.
In order to further improve the heat dissipation efficiency of the lithium battery body 1, a plurality of fan plates are arranged on one side of the second heat dissipation plate 24 opposite to the lithium battery body 1, and when the second heat dissipation plate 24 moves up and down, the fan plates drive the circulation of air in the shell 19, so that the heat exchange efficiency of the air in the shell 19 and the external air is also improved.
As shown in fig. 6, in order to further reduce the possibility of explosion of the lithium battery body 1, a cavity 28 is disposed in the side wall of the housing 19, an inert gas is stored in the cavity 28, the cavity 28 is communicated with the outer side wall of the housing 19 through an air inlet pipe, the cavity 28 is communicated with the inner side wall of the housing 19 through an air outlet pipe 25, a third piston 29 is disposed in the cavity 28, the air inlet pipe and the air outlet pipe 25 are located on one side of the third piston 29, the other side of the third piston 29 is connected with a driving member, the driving member is used for controlling the third piston 29 to move up and down, the driving member is connected with a temperature control switch disposed in the box body 6, the temperature in the box body 6 reaches a set temperature value, the temperature control switch is turned off, the driving member controls the third piston 29 to move, and inputs the inert gas into the housing 19, and the inert gas is convenient for reducing the possibility of explosion of the lithium battery body 1.
The cavity 28 is internally provided with a pressure switch connected with the driving moving part, the pressure switch is positioned between the air inlet pipe and the third piston 29, after the driving part controls the third piston 29 to move to input the inert gas into the shell 19, the third piston 29 contacts the pressure switch to close the pressure switch, the driving moving part is started at the moment, the driving moving part controls the second heat dissipation plate 24 to move to enable the inner heat dissipation hole 23 and the outer heat dissipation hole 22 not to be communicated, the air in the shell 19 is not communicated with the outer air, and the lithium battery body 1 in the shell 19 is in a closed state.
In order to reduce the collision between the shell 19 and the lithium battery body 1 arranged therein and further reduce the risk of explosion of the lithium battery body 1, buffer plates are arranged on the inner side wall of the shell 19 at equal intervals, and buffer holes and air holes are formed in the buffer plates.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to imply that the scope of the invention is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. An explosion-proof lithium battery comprises a lithium battery body (1) and is characterized in that two communicating components (2) are arranged on the upper end face of the lithium battery body (1), each communicating component (2) comprises a box body (6), a first electric connecting piece (3) and a second electric connecting piece (4) are arranged on the outer side of each box body (6), the two second electric connecting pieces (4) are respectively communicated with the positive pole and the negative pole of the lithium battery body (1), at least two vertically-arranged communicating pieces (5) are arranged in each box body (6), each communicating piece (5) comprises two electric connecting blocks (8) which are arranged in pairs and connected with the corresponding box body (6), elastic plates (7) are arranged on the opposite sides of the two electric connecting blocks (8), the other ends of the elastic plates (7) are arranged downwards, and connecting blocks (9) are arranged at the other ends of the elastic plates (7), the two uppermost electric connection blocks (8) in the box body (6) are respectively connected with the first electric connection piece (3) and the second electric connection piece (4), a communication cavity (11) is formed in the elastic plate (7), a conductive piece (12) is arranged in the communication cavity (11), two ends of the conductive piece (12) are respectively connected with the electric connection blocks (8) and the electric connection blocks (9), first air cylinders (13) are arranged on the opposite sides of the two elastic plates (7), first pistons (14) are arranged in the first air cylinders (13) in a sliding mode, the first pistons (14) are hinged to the elastic plates (7) through first moving rods (18), air outlets (30) are communicated on the first air cylinders (13), and the blowing directions of the air outlets (30) point to the electric connection blocks (9); the two connecting blocks (9) are connected through a fuse belt (10), and when the fuse belt (10) tensions the two connecting blocks (9), the elastic plate (7) is arranged in a bending mode; after the fuse wire belt (10) between the two electric connection blocks (9) is fused, the two elastic plates (7) are oppositely sprung open, and the two electric connection blocks (9) respectively connected on the two elastic plates (7) are contacted with the two electric connection blocks (8) on the communication component (2) which are adjacently arranged.
2. The explosion-proof lithium battery as claimed in claim 1, wherein a second air cylinder (26) connected with the box body (6) is arranged on one side of the first air cylinder (13), a first heat dissipation plate (17) is arranged on one side in the second air cylinder (26), the first heat dissipation plate (17) is connected with the power connection block (8) through a first heat conduction member (20), an air bag (15) is communicated with one side of the second air cylinder (26) provided with the first heat dissipation plate (17) through an air through pipe (16), and the air bag (15) is located between the elastic plate (7) and the box body (6).
3. An explosion-proof lithium battery as claimed in claim 2, characterized in that a heat-expandable member (31) is provided on the other side in the second cylinder (26), the heat-expandable member (31) is connected to the charging block (8) via a second heat-conducting member (21), and a second piston (27) slidably connected to the second cylinder (26) is connected to one side of the heat-expandable member (31).
4. An explosion-proof lithium battery as claimed in claim 2, characterized in that the inner side wall of the first cylinder (13) is connected to the first piston (14) by a first elastic spring, and the outer side of the first elastic spring is coated with a magnetic-proof coating.
5. The lithium explosion-proof battery according to claim 4, wherein the inner side wall of the side of the first air cylinder (13) connected with the box body (6) is provided with a second sub-magnet, and the first piston (14) is provided with a second main magnet matched with the second sub-magnet.
6. The explosion-proof lithium battery of claim 1 wherein the power connection block (8) is provided with a first sub-magnet, and the power connection block (9) is provided with a first parent magnet which is matched with the first sub-magnet.
7. Explosion-proof lithium battery as claimed in claim 1, characterized in that a housing (19) is arranged outside the lithium battery body (1), an outer heat dissipation hole (22) is formed in the side wall of the shell (19), a second heat dissipation plate (24) located on one side of the outer heat dissipation hole (22) is arranged in the shell (19), the second heat dissipation plate (24) is connected with the inner side wall of the shell (19) in a sliding way, the second heat dissipation plate (24) is provided with an inner heat dissipation hole (23) matched with the outer heat dissipation hole (22), the second heat dissipation plate (24) is connected with a driving moving part which is used for controlling the second heat dissipation plate (24) to move up and down, when the driving moving part controls the second heat dissipation plate (24) to move, the inner heat dissipation hole (23) is communicated with the outer heat dissipation hole (22) for communicating air in the shell (19) with the outer air; when the driving moving part controls the second heat dissipation plate (24) to move, the inner heat dissipation holes (23) are not communicated with the outer heat dissipation holes (22) and used for preventing air in the shell (19) from being communicated with the outer air, and the lithium battery body (1) in the shell (19) is in a closed state.
8. An explosion-proof lithium battery as claimed in claim 7, characterized in that the second heat sink (24) is provided with a plurality of fan plates on the side opposite to the lithium battery body (1).
9. Explosion-proof lithium battery as claimed in claim 7, characterized in that a cavity (28) is provided in the side wall of the housing (19), inert gas is stored in the cavity (28), the cavity (28) is communicated with the outer side wall of the shell (19) through an air inlet pipe, the cavity (28) is communicated with the inner side wall of the shell (19) through an air outlet pipe (25), a third piston (29) is arranged in the cavity (28), the air inlet pipe and the air outlet pipe (25) are positioned on one side of the third piston (29), the other side of the third piston (29) is connected with a driving piece which is used for controlling the third piston (29) to move up and down, the driving piece is connected with a temperature control switch arranged in the box body (6), when the temperature in the box body (6) reaches a set temperature value, the temperature control switch is closed, and the driving piece controls the third piston (29) to move so as to input the inert gas into the shell (19).
10. The explosion-proof lithium battery of claim 9, wherein a pressure switch connected to the driving moving member is disposed in the cavity (28), the pressure switch is located between the air inlet pipe and the third piston (29), after the driving member controls the third piston (29) to move to input the inert gas into the housing (19), the third piston (29) contacts the pressure switch to close the pressure switch, and at this time, the driving moving member starts, the driving moving member controls the second heat dissipation plate (24) to move to make the inner heat dissipation holes (23) not communicated with the outer heat dissipation holes (22) for the air in the housing (19) not communicated with the outer air, and the lithium battery body (1) in the housing (19) is in a closed state.
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| CN202210717148.1A CN114824575B (en) | 2022-06-23 | 2022-06-23 | Explosion-proof lithium battery |
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Cited By (1)
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| CN115882149A (en) * | 2023-02-22 | 2023-03-31 | 深圳市柯讯科技有限公司 | Battery pack based on fire prevention and explosion prevention |
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| CN114824575B (en) | 2022-09-09 |
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