CN111987258A - Lithium ion battery pack provided with overload protection device and preparation process thereof - Google Patents
Lithium ion battery pack provided with overload protection device and preparation process thereof Download PDFInfo
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- CN111987258A CN111987258A CN202010885115.9A CN202010885115A CN111987258A CN 111987258 A CN111987258 A CN 111987258A CN 202010885115 A CN202010885115 A CN 202010885115A CN 111987258 A CN111987258 A CN 111987258A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
- H01M10/656—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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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a lithium ion battery pack with an overload protection device and a preparation process thereof, and the lithium ion battery pack comprises a box cover, a handle, a filling port, a box body, an air inlet, a filter screen, a thermometer, an air outlet, a lithium battery, a sealing layer, a first fixing rod, a second fixing rod, a dry powder layer, a slide rail, a fan, a limiting ring, a first fixing block, a second fixing block, a locking block, a second groove, a third groove, a slide block and a through hole, wherein the cold air outside is pumped into the box body by the motor, and the heat emitted by the lithium battery pack is blown out from the air outlet, so that a large amount of heat generated by the overload of the lithium battery pack can be dissipated timely, the fire caused by the lithium battery pack is avoided by the design of the sealing layer and the dry powder layer on the box cover, the use safety of the device is improved, and the quick assembly of the lithium battery, and the device is convenient to disassemble after being assembled, and the practicability of the device is greatly improved.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium ion battery pack with an overload protection device and a preparation process thereof.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of scientific technology, lithium batteries have become the mainstream.
The lithium cell all obtains extensive application in each aspect of present life because its excellent performance, but single section lithium cell battery current and voltage are less in the use, thereby need establish ties the lithium cell or parallelly connected formation group battery, the in-process of splicing into the group battery generally adopts glue bonding or welded fastening, the cost is higher, and can't dismantle after fixing, the practicality is lower, overload's phenomenon can appear in the use in lithium ion battery group, thereby cause the battery to generate heat in a large number, the life of battery has been shortened, explosion phenomenon can appear even seriously, cause the conflagration, and present group battery does not have the extinguishing device from the area, in case can enlarge rapidly in the short time in the conflagration takes place, cause very big threat to people's property and life safety.
Disclosure of Invention
The present invention is directed to a lithium ion battery pack with an overload protection device and a manufacturing process thereof, so as to solve the problems of the background art.
In order to solve the technical problems, the invention provides the following technical scheme: a lithium ion battery pack with an overload protection device comprises a case cover, a handle, a feeding hole, a case body, an air inlet, a filter screen, a thermometer, an air outlet, a single battery, a sealing layer, a first fixing rod, a second fixing rod, a dry powder layer, a mounting plate, a sliding rail, a fan, a first groove, a guide rod, a spring, a limiting ring, a first fixing block, a second fixing block, a third fixing rod, a locking block, a second groove, a third groove, a sliding block and a through hole, wherein the bottom of one side of the case cover is rotatably connected with the top of one side of the case body through a hinge, the case cover is hollow, the dry powder layer is arranged in the hollow part, the sealing layer is arranged at the center of the bottom of the case cover, the thermometer is arranged at the center top of the other side of the case body, the air outlet is formed, the bottom of the center of the other side of the box body, which is adjacent to the thermometer, is provided with an air inlet, a filter screen is arranged in the air inlet, and a plurality of single batteries are placed in the center of the bottom surface in the box body;
the single-section battery is composed of a negative terminal, a top cover, a positive terminal, a positive ear plate, a negative ear plate, a positive plate, a diaphragm, a negative plate and a shell, the bottom of the shell is placed at the center of the bottom surface in the box body, the top of the shell is fixedly connected with the bottom of the top cover, the two sides of the center of the top cover are respectively provided with the negative terminal and the positive terminal, the centers of the bottoms of the negative terminal and the positive terminal are respectively welded with the tops of the negative ear plate and the positive ear plate, the bottoms of the negative ear plate and the positive ear plate respectively penetrate through the two sides of the center of the top cover, the negative ear plate and the positive ear plate are respectively fixedly connected with the negative plate and the positive plate, the diaphragm is arranged between the positive plate and the negative plate, the positive plate, the negative plate and the diaphragm are wound in the shell, the edges of the two sides of the shell are respectively, the slide block is positioned on the mounting plate, a first groove is arranged at the top of the center of one side of the slide rail, which is contacted with the shell, a through hole is arranged at one side of the first groove, a third fixing rod penetrates through the through hole, one end of the third fixing rod penetrates out from the top of one side of the center of the slide rail, the center of the other end of the third fixing rod is fixedly connected with one end of the first fixing block, the outer circumference of the first fixing block is attached to the inner circumference of one end of the spring, the center edge of the third fixing rod is fixedly connected with one end of the limiting ring, the other end of the spring is welded with the top edges of two sides of the shell, one end of the center of the third fixing rod is fixedly connected with one side of the second fixing block, the other side of the second fixing block is fixedly connected with the bottom of the center of one side of the locking block, the third groove is formed in the position, located at the center of one side of the shell adjacent to the sliding rail, of the third groove, a guide rod is connected to the center of the second fixing block in a penetrating mode, one end of the guide rod is fixedly connected with one side of the bottom of the first groove, and the other end of the guide rod is fixedly connected with the edges of the tops of the two sides of the shell.
A preparation process of a lithium ion battery pack with an overload protection device comprises the steps of manufacturing a pole piece; step two, manufacturing a battery cell; step three, packaging the battery; step four, carrying out volume separation; step five, splicing the battery pack;
in the first step, firstly, mixing an electrode active material, a binder, a solvent and the like together, stirring by a stirrer to form slurry, uniformly coating the prepared slurry on a current collector by using a coating machine, then compacting and drying to form a positive plate and a negative plate, and then punching and cutting the plates into uniform sizes;
in the second step, the positive plate, the negative plate and the diaphragm cut in the first step are wound into a battery cell through a winding machine, then the wound battery cell is placed into a shell, and then electrolyte is injected into the battery cell by using an electrolyte injection machine to complete the manufacture of the battery cell;
in the third step, on the basis of the battery cell manufactured in the second step, a positive pole lug plate, a negative pole lug plate, a positive pole binding post and a negative pole binding post are welded, and then a top cover is installed to complete the complete packaging of the battery;
in the fourth step, the battery packaged in the third step is charged and activated to generate voltage, and the capacity of the battery is tested;
in the fifth step, the batteries subjected to capacity division in the fourth step are taken out, then the sliding blocks at the edges of the two sides of the shell are inserted in the direction of a third groove on the sliding rail, because the sliding blocks are provided with second grooves, when the second grooves and the locking blocks are in the same straight line, under the action of the elastic force of the spring, the third fixing rods are driven to move towards the opposite direction of the shell, then the second fixing blocks are driven to move towards the opposite direction of the shell, and then the locking blocks are driven to move towards the opposite direction of the shell, so that the locking blocks are clamped with the second grooves, the quick assembly of the single batteries is realized to form the battery pack, the assembled four single batteries are sequentially connected in series by using metal wires, when the disassembly is needed, the third fixing rods are pressed towards the direction of the shell, so that the second fixing blocks are driven to move towards the direction of the shell, so that the locking blocks are driven to move towards the direction of the shell, and the clamping of, at the moment, the single battery can be detached by sliding along the direction of the sliding rail, then the assembled battery pack is placed into the box body, and the box cover is covered to complete the assembly of the battery pack.
According to the technical scheme, the center of the top of the box cover is fixedly connected with the bottom of the handle, the filling opening is installed on one side of the center of the top of the box cover, and the one-way valve is installed inside the filling opening.
According to the technical scheme, electrolyte is soaked between the positive plate and the diaphragm and between the negative plate and the diaphragm.
According to the technical scheme, two sides of the center of the bottom surface inside the box body are fixedly connected with the bottom of the second fixing rod respectively, the top and the bottom of the center of two adjacent sides of the air inlet of the box body are fixedly connected with one side of the first fixing rod respectively, and the number of the first fixing rods is four and is distributed symmetrically.
According to the technical scheme, the fan is connected with the power supply through the conducting wire.
According to the technical scheme, lubricating oil is coated on the joint of the sliding block and the third groove and the joint of the guide rod and the second fixing block.
According to the technical scheme, in the first step, the positive current collector is an aluminum strip, the negative current collector is a nickel strip, and the stirrer is a vacuum planetary stirrer.
According to the technical scheme, in the second step, the diaphragm is single-layer polyethylene or three-layer composite polypropylene, and the liquid injection machine is an automatic turntable vacuum liquid injection machine.
According to the technical scheme, in the fifth step, the metal wire is a nickel wire.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the external cold air is pumped into the box body through the motor, and the heat emitted by the lithium battery pack is blown out from the air outlet, so that a large amount of heat generated by overload of the lithium battery pack can be emitted in time, and the influence of overheating on the service life of the lithium battery pack is avoided.
2. According to the invention, through the design of the sealing layer and the dry powder layer on the box cover, once the lithium battery pack has a fire disaster, the sealing layer is burnt by flame, and the dry powder falls down to put out the flame in time, so that the fire disaster caused by the lithium battery pack is avoided, and the use safety of the device is improved.
3. According to the invention, the quick assembly of the lithium battery pack is realized by using the locking block after the sliding block is inserted into the third groove on the sliding rail, and the battery is different from glue fixation and welding.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a front cross-sectional view of the overall construction of the present invention;
FIG. 3 is a top expanded view of the overall structure of the present invention;
FIG. 4 is a top cross-sectional view of the overall structure of the present invention;
FIG. 5 is an enlarged view of area A of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of the internal structure of a single cell battery of the present invention;
FIG. 7 is a process flow diagram of the present invention;
in the figure: 1. a box cover; 2. a handle; 3. a material injection port; 4. a box body; 5. an air inlet; 6. filtering with a screen; 7. a thermometer; 8. an exhaust port; 9. a single battery; 10. a sealing layer; 11. a first fixing lever; 12. a second fixing bar; 13. a dry powder layer; 14. mounting a plate; 15. a slide rail; 16. a fan; 17. a first groove; 18. a guide bar; 19. a spring; 20. a limiting ring; 21. a first fixed block; 22. a second fixed block; 23. a third fixing bar; 24. a locking block; 25. a second groove; 26. a third groove; 27. a slider; 28. a through hole; 901. a negative terminal; 902. a top cover; 903. a positive terminal; 904. a positive electrode lug plate; 905. a negative ear plate; 906. a positive plate; 907. a diaphragm; 908. a negative plate; 909. a housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-6, the present invention provides a technical solution: a lithium ion battery pack with an overload protection device comprises a box cover 1, a handle 2, a feeding port 3, a box body 4, an air inlet 5, a filter screen 6, a thermometer 7, an exhaust port 8, a single battery 9, a sealing layer 10, a first fixing rod 11, a second fixing rod 12, a dry powder layer 13, a mounting plate 14, a slide rail 15, a fan 16, a first groove 17, a guide rod 18, a spring 19, a limiting ring 20, a first fixing block 21, a second fixing block 22, a third fixing rod 23, a locking block 24, a second groove 25, a third groove 26, a slide block 27 and a through hole 28, wherein the top center of the box cover 1 is fixedly connected with the bottom of the handle 2, the feeding port 3 is installed at one side of the top center of the box cover 1, a one-way valve is installed inside the feeding port 3 and is beneficial to feeding carbon dioxide gas and dry powder into the box cover 1, the bottom of one, the box cover 1 is hollow, a dry powder layer 13 is arranged in the hollow part, a sealing layer 10 is arranged at the center of the bottom of the box cover 1, a thermometer 7 is arranged at the top of the center of the other side of the box body 4, an exhaust port 8 is arranged at the bottom of the center of one side of the box body 4 adjacent to the thermometer 7, a fan 16 is arranged in the exhaust port 8 and communicated with the inside of the box body 4, the fan 16 is connected with a power supply through a lead wire, so that the normal operation of the fan 16 is facilitated, an air inlet 5 is arranged at the bottom of the center of the other side of the box body 4 adjacent to the thermometer 7, a filter screen 6 is arranged in the air inlet 5, two sides of the center of the bottom surface in the box body 4 are respectively and fixedly connected with the bottom of a second fixing rod 12, the tops and the bottoms, a plurality of single batteries 9 are arranged at the center of the bottom surface in the box body 4;
the single battery 9 is composed of a negative terminal 901, a top cover 902, a positive terminal 903, a positive terminal plate 904, a negative terminal plate 905, a positive terminal plate 906, a diaphragm 907, a negative terminal plate 908 and a shell 909, wherein the bottom of the shell 909 is placed at the center of the bottom surface inside the box body 4, the top of the shell 909 is fixedly connected with the bottom of the top cover 902, the two sides of the center of the top cover 902 are respectively provided with the negative terminal 901 and the positive terminal plate 903, the centers of the bottoms of the negative terminal 901 and the positive terminal plate 903 are respectively welded with the tops of the negative terminal plate 905 and the positive terminal plate 904, the bottoms of the negative terminal plate 905 and the positive terminal plate 904 respectively penetrate through the two sides of the center of the top cover 902, the negative terminal plate 905 and the positive terminal plate 904 are respectively fixedly connected with the negative terminal plate 908 and the positive terminal plate 906, the diaphragm 907 is arranged between the positive terminal plate 906 and the negative terminal, the normal operation of a single battery 9 is facilitated, the positive plate 906, the negative plate 908 and the diaphragm 907 are wound inside the casing 909, the edges of two sides of the casing 909 are fixedly connected with the mounting plate 14 and one side of the slide rail 15 respectively, the two mounting plates 14 and the two slide rails 15 are symmetrically distributed, the mounting plate 14 is positioned at one side of the center of the adjacent side of the casing 909 and fixedly connected with one side of the slide block 27, the slide block 27 is positioned at one side of the center top of the adjacent side of the mounting plate 14 and provided with a second groove 25, the slide rail 15 is provided with a first groove 17 at the center top of the side contacting with the casing 909, one side of the first groove 17 is provided with a through hole 28, a third fixing rod 23 penetrates through the through hole 28, one end of the third fixing rod 23 penetrates out from the top of the center of the slide rail 15, the center of the other end of the third, the center edge of a third fixing rod 23 is fixedly connected with one end of a limiting ring 20, the other end of a spring 19 is welded with the top edges of two sides of a shell 909, one end of the center of the third fixing rod 23 is fixedly connected with one side of a second fixing block 22, the other side of the second fixing block 22 is fixedly connected with the bottom of the center of one side of a locking block 24, the locking block 24 is located at one side adjacent to the second fixing block 22 and penetrates out of the side wall of one side of a third groove 26, the third groove 26 is formed in the center of one side adjacent to the shell 909 of a sliding rail 15, a guide rod 18 is connected with the center of the second fixing block 22 in a penetrating mode, one end of the guide rod 18 is fixedly connected with one side of the bottom of a first groove 17, the other end of the guide rod 18 is fixedly connected with the top edges of.
Referring to fig. 7, the present invention provides a technical solution: a preparation process of a lithium ion battery pack with an overload protection device comprises the steps of manufacturing a pole piece; step two, manufacturing a battery cell; step three, packaging the battery; step four, carrying out volume separation; step five, splicing the battery pack;
in the first step, firstly, mixing an electrode active material, a binder, a solvent and the like together, stirring by a stirrer to form slurry, uniformly coating the prepared slurry on a current collector by using a coating machine, then compacting and drying to form a positive electrode plate and a negative electrode plate, punching and cutting the electrode plates into uniform sizes, wherein the positive electrode current collector is an aluminum strip, the negative electrode current collector is a nickel strip, and the stirrer is a vacuum planetary stirrer;
in the second step, the positive plate 906, the negative plate 908 and the diaphragm 907 cut in the first step are wound into a battery cell through a winding machine, then the wound battery cell is placed into the shell 909, then an electrolyte is injected into the battery cell by using an electrolyte injection machine to complete the manufacture of the battery cell, the diaphragm 907 is single-layer polyethylene or three-layer composite polypropylene, and the electrolyte injection machine is an automatic turntable vacuum electrolyte injection machine;
in the third step, on the basis of the battery core manufactured in the second step, a positive pole lug plate 904, a negative pole lug plate 905, a negative pole binding post 901 and a positive pole binding post 903 are welded, and then a top cover 902 is installed to complete the complete packaging of the battery;
in the fourth step, the battery packaged in the third step is charged and activated to generate voltage, and the capacity of the battery is tested;
in the fifth step, the batteries subjected to capacity division in the fourth step are taken out, then the sliding blocks 27 at the edges of the two sides of the housing 909 are inserted along the direction of the third grooves 26 on the sliding rails 15, because the sliding blocks 27 are provided with the second grooves 25, when the second grooves 25 and the locking blocks 24 are in the same straight line, under the action of the elastic force of the springs 19, the third fixing rods 23 are driven to move towards the opposite direction of the housing 909, then the second fixing blocks 22 are driven to move towards the opposite direction of the housing 909, and then the locking blocks 24 are driven to move towards the opposite direction of the housing 909, so that the locking blocks 24 are clamped with the second grooves 25, thereby realizing the rapid assembly of the single batteries 9 to form the battery pack, sequentially connecting the assembled four single batteries 9 in series by using metal wires, and when disassembly is required, pressing the third fixing rods 23 towards the housing 909 direction, thereby driving the second fixing blocks 22 to move towards the housing 909 direction, thereby drive latch segment 24 to shell 909 direction motion to loosen the joint to second recess 25, at this moment with single section battery 9 along slide rail 15 direction slip pull down can, inside box 4 was put into to the group battery of assembling afterwards, cover case lid 1 and accomplish assembling of group battery promptly, the metal wire is the nickel wire.
Based on the above, the invention has the advantages that when in use, a large amount of heat is generated, the fan 16 is used for pumping outside cold air into the box body 4 from the air inlet 5, the heat generated when the battery pack works is taken away and discharged from the air outlet 8, so that air circulation in the box body 4 is formed, the influence of a large amount of heat generated when the lithium battery pack is overloaded on the service life of the lithium battery pack is avoided, meanwhile, the filter screen 6 is designed to avoid the entrance of outside dust, carbon dioxide gas and dry powder are injected into the box cover 1 through the injection port 3, when the lithium battery pack explodes or burns, the sealing layer 10 is broken, the carbon dioxide gas and the dry powder are rapidly sprayed out to extinguish flame, the occurrence of fire caused by the explosion or spontaneous combustion of the battery is effectively avoided, the use safety of the device is improved, and the slide block 27 is fixedly locked by the locking block 24 after being inserted into the slide rail, therefore, the battery pack can be formed by quickly splicing the single batteries 9, and meanwhile, the battery pack can be detached after being assembled after being spliced with the sliding rail 15 through the sliding block 27, so that the practicability of the device is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a lithium ion battery group with overload protection device, including case lid (1), handle (2), sprue (3), box (4), air inlet (5), filter screen (6), thermometer (7), gas vent (8), single section battery (9), seal layer (10), first dead lever (11), second dead lever (12), dry powder layer (13), mounting panel (14), slide rail (15), fan (16), first recess (17), guide bar (18), spring (19), spacing ring (20), first fixed block (21), second fixed block (22), third dead lever (23), latch segment (24), second recess (25), third recess (26), slider (27) and through-hole (28), its characterized in that: the bottom of one side of the box cover (1) is rotatably connected with the top of one side of the box body (4) through a hinge, the box cover (1) is hollow, a dry powder layer (13) is arranged in the hollow part, a sealing layer (10) is installed at the center of the bottom of the box cover (1), a thermometer (7) is installed at the top of the center of the other side of the box body (4), an exhaust port (8) is formed in the bottom of the center of one side, adjacent to the thermometer (7), of the box body (4), a fan (16) is installed in the exhaust port (8), the exhaust port (8) is communicated with the interior of the box body (4), an air inlet (5) is formed in the bottom of the center of the other side, adjacent to the thermometer (7), of the box body (4), a filter screen (6;
the single battery (9) consists of a negative terminal (901), a top cover (902), a positive terminal (903), a positive ear plate (904), a negative ear plate (905), a positive plate (906), a diaphragm (907), a negative plate (908) and a shell (909), wherein the bottom of the shell (909) is placed in the center of the bottom surface inside the box body (4), the top of the shell (909) is fixedly connected with the bottom of the top cover (902), the two sides of the center of the top cover (902) are respectively provided with the negative terminal (901) and the positive terminal (903), the centers of the bottoms of the negative terminal (901) and the positive terminal (903) are respectively welded with the tops of the negative ear plate (905) and the positive ear plate (904), the bottoms of the negative ear plate (905) and the positive ear plate (904) respectively penetrate through the two sides of the center of the top cover (902), and the negative ear plate (905) and the positive ear plate (904) are respectively fixedly connected with the negative electrode plate (908) and the positive plate (, a diaphragm (907) is arranged between the positive plate (906) and the negative plate (908), the positive plate (906), the negative plate (908) and the diaphragm (907) are wound inside a shell (909), the edges of two sides of the shell (909) are fixedly connected with one side of a mounting plate (14) and one side of a sliding rail (15) respectively, the mounting plate (14) and the sliding rail (15) are distributed symmetrically, the mounting plate (14) is positioned at one side of the center of the adjacent side of the shell (909) and fixedly connected with one side of a sliding block (27), a second groove (25) is formed in one position of the center top of the adjacent side of the mounting plate (14) of the sliding block (27), a first groove (17) is formed in the top of the center of the contact side of the sliding rail (15) and the shell (909), a through hole (28) is formed in one side of the first groove (17), and a third fixing rod (23) penetrates through the, one end of a third fixing rod (23) penetrates out of the top of one side of the center of the sliding rail (15), the center of the other end of the third fixing rod (23) is fixedly connected with one end of a first fixing block (21), the outer circumference of the first fixing block (21) is attached to the inner circumference of one end of a spring (19), the center edge of the third fixing rod (23) is fixedly connected with one end of a limiting ring (20), the other end of the spring (19) is welded with the top edges of the two sides of a shell (909), one end of the center of the third fixing rod (23) is fixedly connected with one side of a second fixing block (22), the other side of the second fixing block (22) is fixedly connected with the bottom of the center of one side of a locking block (24), the locking block (24) is located on one side of the second fixing block (22) and penetrates out of the side wall of a third groove (26), and the third groove (26) is formed in, the center of the second fixing block (22) is connected with a guide rod (18) in a penetrating mode, one end of the guide rod (18) is fixedly connected with one side of the bottom of the first groove (17), and the other end of the guide rod (18) is fixedly connected with the top edges of the two sides of the shell (909).
2. A preparation process of a lithium ion battery pack with an overload protection device comprises the steps of manufacturing a pole piece; step two, manufacturing a battery cell; step three, packaging the battery; step four, carrying out volume separation; step five, splicing the battery pack; the method is characterized in that:
in the first step, firstly, mixing an electrode active material, a binder, a solvent and the like together, stirring by a stirrer to form slurry, uniformly coating the prepared slurry on a current collector by using a coating machine, then compacting and drying to form a positive plate and a negative plate, and then punching and cutting the plates into uniform sizes;
in the second step, the positive plate (906), the negative plate (908) and the diaphragm (907) cut in the first step are wound into a battery cell through a winding machine, then the wound battery cell is placed into a shell (909), and then electrolyte is injected into the battery cell through a liquid injection machine to complete the manufacture of the battery cell;
in the third step, on the basis of the battery core manufactured in the second step, a positive pole lug plate (904), a negative pole lug plate (905), a negative pole binding post (901) and a positive pole binding post (903) are welded, and then a top cover (902) is installed to finish the complete packaging of the battery;
in the fourth step, the battery packaged in the third step is charged and activated to generate voltage, and the capacity of the battery is tested;
in the fifth step, the batteries subjected to capacity division in the fourth step are taken out, then the sliding blocks (27) at the edges of the two sides of the shell (909) are inserted in the direction of the third groove (26) on the sliding rail (15), because the sliding blocks (27) are provided with the second grooves (25), when the second grooves (25) and the locking blocks (24) are in the same straight line, under the elastic force action of the spring (19), the third fixing rod (23) is driven to move towards the opposite direction of the shell (909), the second fixing block (22) is driven to move towards the opposite direction of the shell (909), then the locking blocks (24) are driven to move towards the opposite direction of the shell (909), so that the locking blocks (24) are clamped with the second grooves (25), the quick assembly of the single batteries (9) is realized to form the battery pack, the assembled four single batteries (9) are sequentially connected in series by metal wires, when needs are dismantled, press third dead lever (23) to shell (909) direction, thereby drive second fixed block (22) to shell (909) direction motion, thereby drive latch segment (24) to shell (909) direction motion, thereby loosen the joint to second recess (25), this moment with single section battery (9) along slide rail (15) direction slip pull down can, box (4) inside will be put into to the group battery of assembling afterwards, cover assembling of group battery is accomplished promptly in case lid (1).
3. A lithium ion battery pack provided with an overload protection device according to claim 1, wherein: case lid (1) top center and handle (2) bottom fixed connection, injection mouth (3) are installed to case lid (1) top center one side, injection mouth (3) internally mounted has the check valve.
4. A lithium ion battery pack provided with an overload protection device according to claim 1, wherein: electrolyte is soaked between the positive plate (906) and the diaphragm (907) and between the negative plate (908) and the diaphragm (907).
5. A lithium ion battery pack provided with an overload protection device according to claim 1, wherein: the box is characterized in that two sides of the center of the bottom surface inside the box body (4) are fixedly connected with the bottoms of the second fixing rods (12) respectively, the box body (4) is located at the top of the center of two adjacent sides of the air inlet (5) and is fixedly connected with the bottom of the center of one side of the first fixing rods (11) respectively, and the number of the first fixing rods (11) is four, and the first fixing rods are symmetrically distributed.
6. A lithium ion battery pack provided with an overload protection device according to claim 1, wherein: the fan (16) is connected with a power supply through a lead.
7. A lithium ion battery pack provided with an overload protection device according to claim 1, wherein: lubricating oil is coated on the joint of the sliding block (27) and the third groove (26) and the joint of the guide rod (18) and the second fixed block (22).
8. The process according to claim 2, wherein the process comprises the following steps: in the first step, the positive current collector is an aluminum strip, the negative current collector is a nickel strip, and the stirrer is a vacuum planetary stirrer.
9. The process according to claim 2, wherein the process comprises the following steps: in the second step, the diaphragm (907) is single-layer polyethylene or three-layer composite polypropylene, and the liquid injection machine is an automatic turntable vacuum liquid injection machine.
10. The process according to claim 2, wherein the process comprises the following steps: in the fifth step, the metal wire is a nickel wire.
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| CN202010885115.9A CN111987258B (en) | 2020-08-28 | 2020-08-28 | Lithium ion battery pack provided with overload protection device and preparation process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968242A (en) * | 2021-02-02 | 2021-06-15 | 江苏海思联新能源科技有限公司 | Solid-state lithium battery with wide-temperature charging and discharging structure and manufacturing method thereof |
| CN113036286A (en) * | 2021-03-01 | 2021-06-25 | 刘迪 | Ultrahigh-rate lithium battery and production process thereof |
| CN113437425A (en) * | 2021-08-25 | 2021-09-24 | 潍坊科技学院 | Battery box of new energy automobile |
| WO2023275991A1 (en) * | 2021-06-29 | 2023-01-05 | 株式会社テクノスヤシマ | Battery device and forklift |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317641A (en) * | 2004-04-27 | 2005-11-10 | Fujitsu Ltd | Apparatus unit removable structure and electronic apparatus |
| US20110116861A1 (en) * | 2009-11-19 | 2011-05-19 | Zhi Zhang | Battery pack locking device |
| CN103825059A (en) * | 2014-02-13 | 2014-05-28 | 浙江吉利控股集团有限公司 | Heat management and automatic-fire extinguishing system for vehicle battery |
| CN208256772U (en) * | 2018-06-08 | 2018-12-18 | 洛阳捷鑫能源科技有限公司 | A kind of battery case power supply tandem arrangement |
| CN209447892U (en) * | 2019-03-14 | 2019-09-27 | 河南台能光电科技有限公司 | A kind of energy storage lithium ion battery group for solar street light |
-
2020
- 2020-08-28 CN CN202010885115.9A patent/CN111987258B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317641A (en) * | 2004-04-27 | 2005-11-10 | Fujitsu Ltd | Apparatus unit removable structure and electronic apparatus |
| US20110116861A1 (en) * | 2009-11-19 | 2011-05-19 | Zhi Zhang | Battery pack locking device |
| CN103825059A (en) * | 2014-02-13 | 2014-05-28 | 浙江吉利控股集团有限公司 | Heat management and automatic-fire extinguishing system for vehicle battery |
| CN208256772U (en) * | 2018-06-08 | 2018-12-18 | 洛阳捷鑫能源科技有限公司 | A kind of battery case power supply tandem arrangement |
| CN209447892U (en) * | 2019-03-14 | 2019-09-27 | 河南台能光电科技有限公司 | A kind of energy storage lithium ion battery group for solar street light |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968242A (en) * | 2021-02-02 | 2021-06-15 | 江苏海思联新能源科技有限公司 | Solid-state lithium battery with wide-temperature charging and discharging structure and manufacturing method thereof |
| CN112968242B (en) * | 2021-02-02 | 2022-11-01 | 江苏海思联新能源科技有限公司 | Solid-state lithium battery with wide-temperature charging and discharging structure and manufacturing method thereof |
| CN113036286A (en) * | 2021-03-01 | 2021-06-25 | 刘迪 | Ultrahigh-rate lithium battery and production process thereof |
| WO2023275991A1 (en) * | 2021-06-29 | 2023-01-05 | 株式会社テクノスヤシマ | Battery device and forklift |
| CN113437425A (en) * | 2021-08-25 | 2021-09-24 | 潍坊科技学院 | Battery box of new energy automobile |
| CN113437425B (en) * | 2021-08-25 | 2021-10-29 | 潍坊科技学院 | Battery box of new energy automobile |
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