CN114784440A - Lithium battery with protection function - Google Patents
Lithium battery with protection function Download PDFInfo
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- CN114784440A CN114784440A CN202210511557.6A CN202210511557A CN114784440A CN 114784440 A CN114784440 A CN 114784440A CN 202210511557 A CN202210511557 A CN 202210511557A CN 114784440 A CN114784440 A CN 114784440A
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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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
- H01M10/6554—Rods or plates
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
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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
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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- Chemical Kinetics & Catalysis (AREA)
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- Secondary Cells (AREA)
Abstract
The invention provides a lithium battery with a protection function, which relates to the technical field of lithium batteries and comprises the following components: the lithium battery box comprises a box body, wherein a lithium battery body is fixedly arranged in the box body; the protection boxes are fixedly arranged on two sides of the lithium battery body; the fixing box is fixedly arranged at the top of the lithium battery body, and the top of the fixing box protrudes out of the upper surface of the box body; and the heat dissipation assembly is arranged in the box body and used for cooling and dissipating heat of the lithium battery body. This kind of lithium cell passes through the box, use in the cooperation of guard box and protection component, can improve the ability of resisting to external impact, simultaneously when receiving stronger striking, can change the direction of impact, reduce the impact to lithium battery body's influence, use through the cooperation of fixed case and outage subassembly, can be when receiving the striking or carry out the outage processing to the lithium cell under the too high condition of box inside temperature, prevent the spontaneous combustion of explosion from appearing in the lithium cell, prolong the life of lithium cell.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery with a protection function.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, and the lithium metal has very high requirements on the environment for processing, storage and use due to the very active chemical characteristics of the lithium metal, and becomes a mainstream along with the development of scientific technology.
And the lithium cell is at the in-process of manufacturing, for protecting the lithium cell, generally prevents the lithium cell inside protective case or protective housing to prevent that the lithium cell from exposing in the air, receiving external environment factor's influence easily, lead to the lithium cell to appear damaging, influence the life of lithium cell.
The existing protection box or protection shell for protecting the lithium battery generally offsets and buffers external collision through the material hardness of the protection box or the rubber, the sponge or the spring arranged in the box body, when the impact with higher strength is encountered, the deformation distance of the rubber, the sponge or the spring is limited, so that the impact force generated by the impact is still transmitted to the lithium battery, the lithium battery is damaged, and after the impact occurs, the lithium battery is easy to deform or even break, so that the electrolyte leaks, and at the moment, the lithium battery is still in a state of being connected with the external world to work, so that the lithium battery is easy to explode, and a large amount of heat can be generated in the use process of the lithium battery, a structure for dissipating heat of the lithium battery is generally arranged in the protection box or protection shell, if the lithium battery works in the external high-temperature environment, the heat dissipation structure in the protection box can not effectively dissipate heat of the lithium battery, the lithium battery continuously generates and accumulates heat, and the lithium battery is subjected to high-temperature spontaneous combustion.
Disclosure of Invention
The invention aims to solve the defects in the background art, and provides a lithium battery with a protection function, wherein the lithium battery can improve the resistance to external impact force by matching a box body, a protection box and a protection assembly, and can change the direction of the impact force when being strongly impacted, reduce the influence of the impact force on a lithium battery body, and can perform power-off treatment on the lithium battery when being impacted or under the condition of overhigh temperature in the box body by matching a fixed box and a power-off assembly, so that the lithium battery is prevented from explosion and spontaneous combustion, and the service life of the lithium battery is prolonged.
In order to achieve the above object, the present invention provides the following technical solution, a lithium battery with a protection function, comprising: the lithium battery box comprises a box body, a battery cover and a battery cover, wherein a lithium battery body is fixedly arranged in the box body; the protection boxes are fixedly arranged on two sides of the lithium battery body; the fixing box is fixedly arranged on the top of the lithium battery body, and the top of the fixing box protrudes out of the upper surface of the box body; the heat dissipation assembly is arranged inside the box body and used for cooling and dissipating heat of the lithium battery body; the power-off assembly is arranged in the fixing box and used for powering off the lithium battery body under the condition of high temperature or external impact; and the protection component is arranged in the protection box and used for changing the direction of the impact force received by the lithium battery body.
Further, the heat dissipation assembly includes: the heat dissipation cavity is arranged in the box body, and a blower is fixedly arranged in the heat dissipation cavity; the air outlet hole and the air inlet hole are formed in the two sides of the box body and are communicated with the heat dissipation cavity; the cooling fins are fixedly connected to the plurality of cooling fins at the bottom of the lithium battery body and are distributed in a horizontal and uniform arrangement mode.
Further, the guard assembly includes: the pressing rods are fixedly connected to the inner walls of the two sides of the box body, and one end, close to the protection box, of each pressing rod is in a hemispherical shape; the pressing hole is formed in one side of the protection box; fixed connection in reset spring on protection box top and the bottom inner wall, reset spring is close to the one end fixedly connected with extrusion piece according to the pressure pole, just one side that extrusion piece is close to according to the pressure pole is provided with the inclined plane, be provided with a plurality of buffer spring between protection box and the box inner wall.
Furthermore, a limiting plate is fixedly mounted on the inner wall of one side of the protection box, and a limiting groove matched with the limiting plate for use is formed in one side face, away from the pressing rod, of the extrusion block.
Furthermore, the equal fixed mounting of guard box upper and lower surface has the gas storage box, the inside piston that is provided with rather than supporting use of gas storage box, two connecting rods of a side fixedly connected with of pressing the depression bar are kept away from to the extrusion piece, the one end that the extrusion piece was kept away from to the connecting rod is inserted in the gas storage box and is connected with the piston.
Furthermore, a side fixedly connected with pipe that the gas storage tank is close to lithium cell body, lithium cell body both sides all are provided with the gas-supply pipe, just the pipe switches on with the gas-supply pipe mutually.
Further, the power-off assembly includes: the cavity is arranged in the fixed box and communicated with the gas transmission pipe; the movable block is arranged in the cavity and used with the cavity in a matched mode, a movable rod of an L-shaped structure is fixedly connected to one side of the movable block, an insulating block is fixedly connected to one end, away from the movable block, of the movable rod, a first electricity connecting block is fixedly connected to the top of the insulating block, and a second electricity connecting block is fixedly mounted in the fixed box.
Further, the first external electrode of fixed box top fixedly connected with and the second external electrode, just the second external electrode connects the electric piece in the second and is connected, first external electrode bottom is connected with lithium cell body, lithium cell body top fixedly connected with connecting wire, the one end and the first electric piece that connects of connecting wire are connected.
The invention provides a lithium battery with a protection function, which has the following beneficial effects:
1. the lithium battery protection box has the advantages that the box body, the protection box and the protection assembly are matched for use, so that the resistance to external impact force can be improved, and meanwhile, when the lithium battery protection box is impacted strongly, the direction of the impact force can be changed, and the influence of the impact force on the lithium battery body is reduced.
2. Secondly, use through the cooperation of fixed case and outage subassembly, can receive when the striking or carry out the outage to the lithium cell under the too high condition of the inside temperature of box and handle, prevent that explosion spontaneous combustion from appearing in the lithium cell, prolong the life of lithium cell.
3. Then, carry out the heat dissipation cooling to lithium cell body through radiator unit, transmit the heat that lithium cell body during operation produced, reduce the accumulation of heat on lithium cell body, prevent that the heat accumulation is too much and the condition that appears spontaneous combustion.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view of the overall structure of the present invention.
Fig. 3 is a schematic structural diagram of the protection box of the present invention.
FIG. 4 is a schematic view of the extrusion block of the present invention.
FIG. 5 is a schematic view of the movable rod of the present invention.
Fig. 6 is an enlarged view of the invention at a in fig. 2.
Fig. 7 is an enlarged view of the invention at B in fig. 2.
In FIGS. 1-7: 1. a box body; 101. a heat dissipation cavity; 102. an air outlet; 103. an air inlet; 104. a blower; 105. a pressing lever; 2. a lithium battery body; 201. a heat sink; 202. a first external electrode; 203. a connecting wire; 3. a protection box; 301. pressing the hole; 302. a return spring; 303. extruding the block; 304. a limiting groove; 305. a limiting plate; 306. a connecting rod; 307. a piston; 308. a buffer spring; 4. a gas storage tank; 401. a conduit; 402. a gas delivery pipe; 5. a fixed box; 501. a cavity; 502. a moving block; 503. a travel bar; 504. an insulating block; 505. a first power connection block; 506. a second power connection block; 507. and a second external electrode.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application provides a lithium cell with safeguard function, and this lithium cell with safeguard function can realize using in the cooperation through box, guard box and protective component, can improve the ability of resisting to external impact, when receiving stronger striking, can change the direction of impact simultaneously, reduces the impact to lithium cell body's influence. The lithium battery having the protection function will be described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
The present application is described in detail below with reference to the attached drawings and the detailed description. Referring to fig. 1-7, the lithium battery with protection function provided in this embodiment includes: the lithium battery box comprises a box body 1, wherein a lithium battery body 2 is fixedly arranged in the box body 1; a plurality of protection boxes 3 fixedly installed at both sides of the lithium battery body 2; the fixing box 5 is fixedly arranged on the top of the lithium battery body 2, and the top of the fixing box 5 protrudes out of the upper surface of the box body 1; the heat dissipation assembly is arranged inside the box body 1 and used for cooling and dissipating heat of the lithium battery body 2; the power-off component is arranged in the fixing box 5 and is used for powering off the lithium battery body 2 at high temperature or under the impact of external force; the protection component is arranged inside the protection box 3 and used for changing the direction of the impact force received by the lithium battery body 2.
In this embodiment, the lithium battery with protection function mainly includes box 1, lithium cell body 2, guard box 3, fixed case 5, radiator unit, outage subassembly and protective component.
Wherein, box 1, guard box 3 and the protective assembly that lithium cell with safeguard function includes for carry out collision avoidance to lithium cell body 2, reduce lithium cell body 2 through the direction that changes the impact and receive the striking injury.
The lithium battery with the protection function comprises a heat dissipation assembly used for cooling and dissipating heat of the lithium battery body 2, and spontaneous combustion caused by overhigh working temperature of the lithium battery body 2 is prevented.
In some embodiments, a heat dissipation assembly comprises: a heat dissipation cavity 101 arranged in the box body 1, wherein a blower 104 is fixedly arranged in the heat dissipation cavity 101; the air outlet hole 102 and the air inlet hole 103 are arranged on two sides of the box body 1, and the air outlet hole 102 and the air inlet hole 103 are communicated with the heat dissipation cavity 101; fixedly connected in the polylith fin 201 of lithium cell body 2 bottom, and polylith fin 201 is horizontal align to grid and distributes.
In some embodiments, because internal resistance exists inside the lithium battery body 2, the lithium battery body 2 generates a large amount of heat in the working process, at this time, the heat generated by the lithium battery body 2 is transferred into the heat dissipation cavity 101 through the plurality of heat dissipation fins 201, and the blower 104 is started at the same time, so that the blower 104 blows the nearby gas to the heat dissipation fins 201, at this time, the air pressure near the blower 104 is reduced, so that the externally-connected gas is sucked into the heat dissipation cavity 101 through the air inlet holes 103 under the effect of the air pressure difference and circulates in the heat dissipation cavity 101, so that the air flow rate on the surface of the heat dissipation fins 201 is increased, the heat dissipation effect of the heat dissipation fins 201 is improved, and then the gas takes away the heat on the heat dissipation fins 201 and discharges the heat from the air outlet holes 102.
In some embodiments, the shield assembly comprises: a plurality of pressing rods 105 fixedly connected to the inner walls of the two sides of the box body 1, wherein one end of each pressing rod 105 close to the protection box 3 is in a hemispherical shape; a pressing hole 301 opened at one side of the protection box 3; fixed connection is in reset spring 302 on guard box 3 top and bottom inner wall, and reset spring 302 is close to the one end fixedly connected with extrusion piece 303 of pressing depression bar 105, and extrusion piece 303 is close to the one side of pressing depression bar 105 and is provided with the inclined plane, is provided with a plurality of buffer spring 308 between guard box 3 and the box 1 inner wall.
In some embodiments, when the box body 1 is impacted, the box body 1 deforms under an external force and presses the buffer spring 308, so that the buffer spring 308 elastically deforms to generate an elastic force, the generated elastic force acts on the box body 1, the kinetic energy generated by the impact is absorbed and consumed by the buffer spring 308, when the box body 1 is slightly impacted by an external foreign object, the impact force is counteracted through the material of the box body 1 and the buffer spring 308, and when the box body 1 is impacted by a larger amount, the mechanical energy generated by the impact far exceeds the elastic potential energy of the buffer spring 308, at this time, the box body 1 drives the pressing rod 105 to move towards the inside of the protection box 3 and contact with the inclined surfaces of the two extrusion blocks 303 in the protection box 3, and because the contact position of the hemispherical end of the pressing rod 105 and the inclined surfaces of the extrusion blocks 303 is a point, the friction between the pressing rod 105 and the extrusion blocks 303 is small, the pressing rod 105 presses the pressing block 303 to apply force in a vertical direction, so that the direction of the impact force is changed, the influence of the impact force on the lithium battery body 2 is reduced, then the pressing rod 105 presses the pressing block 303 to move in a direction away from the pressing rod 105, the reset spring 302 is pressed to generate elastic deformation to generate elastic force, the generated elastic force acts on the pressing block 303, and the pressing rod 105 is reduced to apply force to the pressing block 303 to offset.
In some embodiments, a limiting plate 305 is fixedly mounted on an inner wall of one side of the protection box 3, a limiting groove 304 matched with the limiting plate 305 is formed in one side surface of the extrusion block 303 away from the pressing rod 105, and the moving direction of the extrusion block 303 is limited by the limiting plate 305 and the limiting groove 304 in the moving process of the extrusion block 303.
In some embodiments, the air storage boxes 4 are fixedly installed on the upper and lower surfaces of the protection box 3, pistons 307 used with the air storage boxes 4 are arranged in the air storage boxes 4, two connecting rods 306 are fixedly connected to one side surface of the pressing block 303 far away from the pressing rod 105, and one ends of the connecting rods 306 far away from the pressing block 303 are inserted into the air storage boxes 4 and connected with the pistons 307.
In some embodiments, the squeeze block 303 drives the piston 307 to move through the connecting rod 306 during the movement, so that the piston 307 moves in the air storage tank 4 and transmits the air in the air storage tank 4 to the air transmission pipe 402 through the conduit 401 and to the inside of the cavity 501 through the air transmission pipe 402.
In some embodiments, a conduit 401 is fixedly connected to one side of the gas storage tank 4 close to the lithium battery body 2, gas pipes 402 are arranged on both sides of the lithium battery body 2, and the conduit 401 is communicated with the air delivery pipe 402, when the air in the air storage tank 4 is compressed, the air is discharged into the air delivery pipe 402 through the conduit 401, then, when the temperature inside the box body 1 is too high, the gas in the gas pipe 402 and the gas storage tank 4 is heated and expanded, the gas pressure rises, and the piston 307 in the air storage tank 4 cannot move by being pressed against the extrusion block 303, so that the moving block 502 in the cavity 501 moves under the action of air pressure, and the first electric connection block 505 is separated from the second electric connection block 506 by the moving rod 503 and the insulation block 504, cut off the power supply to lithium battery body 2, prevent that lithium battery body 2 from working under the operational environment of high temperature, lead to the condition that spontaneous combustion appears in lithium battery body 2.
In some embodiments, the power-off component comprises: a cavity 501 arranged in the fixed box 5, wherein the cavity 501 is communicated with the gas pipe 402; the movable block 502 is arranged in the cavity 501 and used with the cavity, one side of the movable block 502 is fixedly connected with a movable rod 503 in an L-shaped structure, one end of the movable rod 503, which is far away from the movable block 502, is fixedly connected with an insulating block 504, the top of the insulating block 504 is fixedly connected with a first power connection block 505, and the inside of the fixed box 5 is fixedly provided with a second power connection block 506.
In some embodiments, as the gas pipe 402 continuously injects gas into the cavity 501, so that the gas in the cavity 501 increases, the gas pressure rises, so that the moving block 502 moves under the action of the gas pressure, so that the moving block 502 drives the insulating block 504 to move through the moving rod 503, so that the first power receiving block 505 is separated from the second power receiving block 506, so that the box body 1 is powered off when being impacted by a strong force, the force generated by the impact cannot be buffered through the structure in the protection box 3, so that the lithium battery body 2 is extruded to deform or even break, thereby causing the electrolyte in the lithium battery body 2 to leak, and causing explosion.
In some embodiments, the top of the fixing box 5 is fixedly connected with a first external electrode 202 and a second external electrode 507, the second external electrode 507 is connected with a second connection block 506, the bottom end of the first external electrode 202 is connected with the lithium battery body 2, the top of the lithium battery body 2 is fixedly connected with a connection line 203, and one end of the connection line 203 is connected with the first connection block 505.
In some embodiments, the lithium battery body 2 performs charging and discharging operations with external electrical devices through the first external electrode 202 and the second external electrode 507.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The lithium battery with a protection function provided in the embodiment of the present application is described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present application, and the description of the embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A lithium battery with a protection function, comprising:
the lithium battery box comprises a box body, a battery cover and a battery cover, wherein a lithium battery body is fixedly arranged in the box body;
the protection boxes are fixedly arranged on two sides of the lithium battery body;
the fixing box is fixedly arranged on the top of the lithium battery body, and the top of the fixing box protrudes out of the upper surface of the box body;
the heat dissipation assembly is arranged inside the box body and used for cooling and dissipating heat of the lithium battery body; and
the power-off component is arranged in the fixing box and used for powering off the lithium battery body under the condition of high temperature or external impact;
and the protection component is arranged in the protection box and used for changing the direction of the impact force applied to the lithium battery body.
2. The lithium battery with protection function according to claim 1, wherein the heat dissipation assembly comprises:
the heat dissipation cavity is arranged in the box body, and a blower is fixedly arranged in the heat dissipation cavity;
the air outlet hole and the air inlet hole are formed in the two sides of the box body and are communicated with the heat dissipation cavity;
the cooling fins are fixedly connected to the plurality of cooling fins at the bottom of the lithium battery body and are distributed in a horizontal and uniform arrangement mode.
3. The lithium battery with protection function according to claim 1, wherein the protection assembly comprises:
the pressing rods are fixedly connected to the inner walls of the two sides of the box body, and one end, close to the protection box, of each pressing rod is in a hemispherical shape;
the pressing hole is formed in one side of the protection box;
fixed connection in reset spring on protection box top and the bottom inner wall, reset spring is close to the one end fixedly connected with extrusion piece according to the pressure pole, just one side that extrusion piece is close to according to the pressure pole is provided with the inclined plane, be provided with a plurality of buffer spring between protection box and the box inner wall.
4. The lithium battery with the protection function according to claim 3, wherein a limiting plate is fixedly mounted on the inner wall of one side of the protection box, and a limiting groove matched with the limiting plate is formed in one side face, away from the pressing rod, of the extrusion block.
5. The lithium battery with the protection function as claimed in claim 3, wherein the gas storage boxes are fixedly mounted on the upper and lower surfaces of the protection box, pistons used in cooperation with the gas storage boxes are arranged in the gas storage boxes, two connecting rods are fixedly connected to one side surface of the extrusion block away from the pressing rod, and one ends of the connecting rods away from the extrusion block are inserted into the gas storage boxes and connected with the pistons.
6. The lithium battery with the protection function as claimed in claim 5, wherein a conduit is fixedly connected to one side surface of the gas storage tank close to the lithium battery body, gas transmission pipes are arranged on both sides of the lithium battery body, and the conduit is communicated with the gas transmission pipes.
7. The lithium battery with protection function according to claim 1, wherein the power cutoff assembly comprises:
the cavity is arranged in the fixed box and communicated with the gas transmission pipe;
the movable block is arranged in the cavity and used with the cavity in a matched mode, a movable rod of an L-shaped structure is fixedly connected to one side of the movable block, an insulating block is fixedly connected to one end, away from the movable block, of the movable rod, a first electricity connecting block is fixedly connected to the top of the insulating block, and a second electricity connecting block is fixedly mounted in the fixed box.
8. The lithium battery with protection function as claimed in claim 1, wherein the top of the fixing box is fixedly connected with a first external electrode and a second external electrode, the second external electrode is connected to the second connection block, the bottom end of the first external electrode is connected to the lithium battery body, the top of the lithium battery body is fixedly connected with a connection wire, and one end of the connection wire is connected to the first connection block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511557.6A CN114784440A (en) | 2022-05-11 | 2022-05-11 | Lithium battery with protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511557.6A CN114784440A (en) | 2022-05-11 | 2022-05-11 | Lithium battery with protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114784440A true CN114784440A (en) | 2022-07-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117177544A (en) * | 2023-10-18 | 2023-12-05 | 深圳市鼎硕同邦科技有限公司 | Communication power supply state monitoring device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117177544A (en) * | 2023-10-18 | 2023-12-05 | 深圳市鼎硕同邦科技有限公司 | Communication power supply state monitoring device and method |
| CN117177544B (en) * | 2023-10-18 | 2024-01-12 | 深圳市鼎硕同邦科技有限公司 | Communication power supply state monitoring device and method |
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