CN115832600B - Vacuum negative pressure structure of lithium battery cell for vehicle - Google Patents
Vacuum negative pressure structure of lithium battery cell for vehicle Download PDFInfo
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- CN115832600B CN115832600B CN202310105748.7A CN202310105748A CN115832600B CN 115832600 B CN115832600 B CN 115832600B CN 202310105748 A CN202310105748 A CN 202310105748A CN 115832600 B CN115832600 B CN 115832600B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a vacuum negative pressure structure of a battery core of a lithium battery for a vehicle, and relates to the technical field of lithium batteries. The lithium battery cell comprises a lithium battery cell body for a vehicle and two electrode plates arranged on the lithium battery cell body for the vehicle, wherein an operation box is arranged in the lithium battery cell body for the vehicle, and an air extraction assembly for keeping the internal pressure of the lithium battery cell body for the vehicle is arranged on the operation box; the air exhaust assembly comprises an air inlet hole and an air outlet pipe which are arranged on the operation box. This kind of vacuum negative pressure structure of automobile-used lithium cell battery core, at the in-process of whole operation, because of the inside of control box and automobile-used lithium cell battery core body communicates with each other, through the outside exhaust of control box inside part gas through the outlet duct and the reset of stripper plate, the inside vacuum negative pressure state that is in of automobile-used lithium cell battery core body of being convenient for keeps, further improvement automobile-used lithium cell battery core body safety in the use.
Description
Technical Field
The invention relates to the technical field of lithium batteries for vehicles, in particular to a vacuum negative pressure structure of a battery core of a lithium battery for vehicles.
Background
The lithium battery for the vehicle is a power battery of a hybrid electric vehicle and an electric vehicle, and has the advantages of high energy density, large capacity, no memory and the like because some technical properties such as energy density, charge and discharge speed and the like of the nickel-metal hydride battery are close to theoretical limit values.
The lithium battery cell is a core part of the lithium battery and is divided into an aluminum shell cell, a soft package cell and a cylindrical cell, and is used as a soul part of the lithium battery; the polymer battery is packaged by adopting an aluminum-plastic composite film, and is at least divided into three layers: the middle layer is an aluminum layer and plays a role in isolating moisture; the outer layer is a glue layer, which plays a role in protecting aluminum from being oxidized by external environment; the inner layer is a glue layer, which plays a role in sealing and preventing electrolyte from corroding the aluminum layer. The aluminum plastic film is formed by stamping, and the required shell shape is manufactured.
In the process of using the lithium battery cell, when the moisture content is too high and exceeds 4.5V voltage charge to lead to electrolyte decomposition, large current flows through charge and discharge, once gas is generated in the cell such as internal short circuit temperature rising electrolyte gasification, positive and negative pole pieces slide in a misplacement manner to cause internal short circuit ignition, negative pressure effect in the cell is reduced, and a certain danger is brought to the use of the lithium battery cell for the vehicle.
Disclosure of Invention
The invention aims to provide a vacuum negative pressure structure of a lithium battery cell for a vehicle, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the vacuum negative pressure structure of the lithium battery cell for the vehicle comprises a lithium battery cell body for the vehicle and two electrode plates arranged on the lithium battery cell body for the vehicle, wherein an operation box is arranged in the lithium battery cell body for the vehicle, and an air extraction assembly for keeping the internal pressure of the lithium battery cell body for the vehicle is arranged on the operation box;
the utility model discloses a lithium battery cell body, including the operation panel, the operation panel is provided with the operation panel, the subassembly of bleeding is including setting up inlet port and the outlet duct on the operation panel, the one end of outlet duct communicates with each other with the outside of automobile-used lithium battery cell body and sets up, be provided with the one-way shutoff subassembly that is used for the inside one-way shutoff of outlet duct on the outlet duct, sliding connection has the stripper plate on the operation panel, the inside mutual matching setting of stripper plate and operation panel, first inclined plane has been seted up to one side of stripper plate, be provided with the extrusion subassembly that is used for the inside gaseous extrusion of operation panel on the operation panel.
Preferably, the extrusion assembly comprises a plurality of fixing rods fixed on the operation box, each fixing rod is connected with a connecting plate in a sliding manner, a transmission rod is fixed on one side of the connecting plate, which is close to the operation box, the other end of the transmission rod is fixed with the extrusion plate, a first spring is sleeved on the side wall of each fixing rod, and a pushing assembly for driving the connecting plate is arranged in the lithium battery cell body of the vehicle.
Preferably, the pushing assembly comprises a mounting plate arranged inside the lithium battery cell body for the vehicle, two wires are mounted on the mounting plate, two connectors are fixed at one ends of the wires, which lean against the two electrode plates, two ends of the wires are connected with capacitors, an electromagnet is connected to the wires, an L-shaped plate is fixed on the connecting plate, an iron block is arranged at one end of the electromagnet, a pulling assembly for pulling the mounting plate under high pressure is arranged inside the lithium battery cell body for the vehicle, and a limiting assembly for limiting the movement position of the L-shaped plate is arranged inside the lithium battery cell body for the vehicle.
Preferably, the pulling assembly comprises a fixing plate fixed inside the battery cell body of the vehicle lithium battery, an operation pipe is arranged on the fixing plate, a piston rod is connected to the operation pipe in a sliding mode, and one end of the piston rod is fixed with one side of the mounting plate.
Preferably, the limiting assembly comprises a limiting plate arranged inside the lithium battery cell body for the vehicle, the limiting plate is positioned in front of the L-shaped plate in the motion direction after being stressed, a second inclined plane is formed in one side, close to the L-shaped plate, of the limiting plate, and an adjusting assembly for adjusting the using position of the limiting plate and a guiding assembly for guiding the movement of the limiting plate in the adjusting process are arranged inside the lithium battery cell body for the vehicle.
Preferably, the adjusting component comprises a threaded rod which is rotationally connected to the battery cell body of the lithium battery for the vehicle, a threaded pipe is connected to the threaded rod in a threaded engagement manner, one end of the threaded pipe is fixed to the upper end of the limiting plate, and a rotating wheel is fixed to the other end of the threaded rod.
Preferably, the guide assembly comprises a first mounting tube fixed at the upper end of the limiting plate, a first sliding rod is connected to the first mounting tube in a sliding manner, the other end of the first sliding rod is fixed with the inside of the lithium battery cell body for the vehicle, and a control assembly for controlling the internal pressure of the lithium battery cell body for the vehicle in the limiting plate adjusting process is arranged in the lithium battery cell body for the vehicle.
Preferably, the control assembly comprises a strip-shaped plate arranged inside the lithium battery cell body for the vehicle, two second mounting pipes are fixed at the upper ends of the strip-shaped plate, second sliding rods are connected to the second mounting pipes in a sliding mode, the other ends of the second sliding rods are fixed with the inside of the lithium battery cell body for the vehicle, and a transmission assembly for transmission of the strip-shaped plate is arranged between the limiting plate and the strip-shaped plate.
Preferably, the transmission assembly comprises a supporting plate arranged between the limiting plate and the strip-shaped plate, the supporting plate is fixed in the lithium battery cell body of the vehicle, a rotating shaft is rotationally connected in the supporting plate, a connecting rod is fixed in the rotating shaft, and two ends of the connecting rod are rotationally connected with one sides of the limiting plate and one side of the strip-shaped plate respectively.
Preferably, the unidirectional plugging assembly comprises a conical groove arranged in the air outlet pipe, the conical groove is arranged in the air outlet pipe and is close to one side of the operation box, the ventilation plate is fixed in the air outlet pipe, a plugging ball for plugging the conical groove is arranged on the conical groove, a second spring is arranged between the plugging ball and the ventilation plate, and the plugging ball is propped against the conical groove under the action of the elastic force of the second spring.
Compared with the prior art, the invention has the beneficial effects that:
(1) This kind of vacuum negative pressure structure of automobile-used lithium cell battery core, at the in-process of whole operation, because of the inside of control box and automobile-used lithium cell battery core body communicates with each other, through the outside exhaust of control box inside part gas through the outlet duct and the reset of stripper plate, the inside vacuum negative pressure state that is in of automobile-used lithium cell battery core body of being convenient for keeps, further improvement automobile-used lithium cell battery core body safety in the use.
(2) This kind of vacuum negative pressure structure of automobile-used lithium cell electricity core rotates through runner drive threaded rod, at threaded rod pivoted in-process, through the intermeshing transmission between threaded rod and the screwed pipe and the direction effect of direction subassembly, make limiting plate atress go on elevating movement, elevating movement through the limiting plate, make the different positions of second inclined plane offset and carry out spacingly on stripper plate and the limiting plate, different positions offset and carry out spacingly through the stripper plate on the second inclined plane, adjust the stroke distance of motion behind the stripper plate atress, through the adjustment of stripper plate motion stroke, be convenient for adjust the gas volume that the stripper plate was to the control box inside release according to the in-service use condition, further be convenient for adjust the exhaust volume according to the in-service use condition, avoid once exhausting too much or too low be difficult to guarantee that automobile-used lithium cell electricity core body is inside in vacuum negative pressure state.
(3) This kind of vacuum negative pressure structure of automobile-used lithium cell battery core, at limiting plate lift adjustment's in-process, because of the threaded rod slides on the screwed pipe and first slide bar slides on first installation tube, cause automobile-used lithium cell battery core body internal pressure to change, and at limiting plate motion's in-process, make two second slide bars slide on two second installation tubes respectively through drive assembly, and the slip direction is opposite with first slide bar at the slip direction of first installation tube, to slide on first installation tube because of the threaded rod slides on the screwed pipe and first slide bar slides, cause the change that automobile-used lithium cell battery core body internal pressure took place to eliminate, guarantee that automobile-used lithium cell battery core body in-process is inside to be in vacuum pressure state, further improved the stability that automobile-used lithium cell battery core body used.
Drawings
FIG. 1 is a schematic diagram of the overall outline structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the pumping assembly according to the present invention;
FIG. 3 is a schematic view of a limiting assembly and an adjusting assembly according to the present invention;
FIG. 4 is a schematic view of the internal structure of the one-way plugging assembly of the present invention;
FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 1;
FIG. 6 is an enlarged schematic view of the structure shown at B in FIG. 2;
fig. 7 is an enlarged schematic view of the structure at C in fig. 3.
In the figure: 1. a lithium battery cell body for a vehicle; 2. an electrode sheet; 3. an operation box; 4. an air extraction assembly; 401. an air inlet hole; 402. an air outlet pipe; 403. an extrusion plate; 404. a first inclined surface; 5. an extrusion assembly; 501. a fixed rod; 502. a connecting plate; 503. a transmission rod; 504. a first spring; 6. a pushing assembly; 601. a mounting plate; 602. a wire; 603. a connector; 604. a capacitor; 605. an electromagnet; 606. an L-shaped plate; 7. pulling the assembly; 701. a fixing plate; 702. an operating tube; 703. a piston rod; 8. a limit component; 801. a limiting plate; 802. a second inclined surface; 9. an adjustment assembly; 901. a threaded tube; 902. a threaded rod; 903. a rotating wheel; 10. a guide assembly; 1001. a first mounting tube; 1002. a first slide bar; 11. a control assembly; 1101. a strip-shaped plate; 1102. a second mounting tube; 1103. a second slide bar; 12. a transmission assembly; 1201. a support plate; 1202. a rotating shaft; 1203. a connecting rod; 13. a unidirectional plugging assembly; 1301. a conical groove; 1302. a ventilation plate; 1303. a blocking ball; 1304. and a second spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the vacuum negative pressure structure of the lithium battery cell for the vehicle comprises a lithium battery cell body 1 for the vehicle and two electrode plates 2 arranged on the lithium battery cell body 1 for the vehicle, wherein an operation box 3 is arranged in the lithium battery cell body 1 for the vehicle, an air extraction component 4 for keeping the internal pressure of the lithium battery cell body 1 for the vehicle is arranged on the operation box 3, and in the whole operation process, the operation box 3 is communicated with the internal of the lithium battery cell body 1 for the vehicle, and partial gas in the operation box 3 is discharged outwards through an air outlet pipe 402 and reset of a pressing plate 403, so that the internal of the lithium battery cell body 1 for the vehicle is kept in a vacuum negative pressure state, and the safety of the lithium battery cell body 1 for the vehicle in the use process is further improved;
the air extraction assembly 4 comprises an air inlet hole 401 and an air outlet pipe 402 which are arranged on the operation box 3, one end of the air outlet pipe 402 is communicated with the outside of the battery cell body 1 of the lithium battery for the vehicle, the air outlet pipe 402 is provided with a unidirectional plugging assembly 13 for unidirectional plugging the inside of the air outlet pipe 402, the operation box 3 is connected with an extrusion plate 403 in a sliding manner, the extrusion plate 403 and the inside of the operation box 3 are mutually matched, one side of the extrusion plate 403 is provided with a first inclined surface 404, the operation box 3 is provided with an extrusion assembly 5 for extruding air in the operation box 3, the extrusion plate 403 is pushed to slide in the operation box 3 through the extrusion assembly 5, and in the process of the extrusion plate 403 being forced to slide in the operation box 3, the sectional area of the end face of the extrusion plate 403, which is close to the air inlet hole 401, is larger than the sectional area of the end face of the extrusion plate 403, which is close to the air outlet pipe 402, in the process of the forced to slide of the extrusion plate 403, the air inlet hole 401 is plugged by one end of the extrusion plate 403, and after the plugging is finished, the air in the operation box 3 is discharged outwards through the operation box 402 by the continuous movement of the extrusion plate 403.
The extrusion assembly 5 comprises a plurality of fixed rods 501 fixed on the operation box 3, each fixed rod 501 is connected with a connecting plate 502 in a sliding manner, one side, close to the operation box 3, of each connecting plate 502 is fixedly provided with a transmission rod 503, the other end of each transmission rod 503 is fixed with the extrusion plate 403, a first spring 504 is sleeved on the side wall of each fixed rod 501, the inside of the lithium battery cell body 1 for the vehicle is provided with a pushing assembly 6 for driving the connecting plate 502, the extrusion plate 403 is pushed to slide in the operation box 3 by the connecting plate 502 and the transmission rod 503 in a stressed manner in the process of moving the connecting plate 502, the movement of the connecting plate 502 is guided and driven by the fixed rods 501 to deform by the force to generate elasticity, and the extrusion plate 403 is pushed to reset conveniently by the action of the elasticity of the first springs 504.
The pushing assembly 6 comprises a mounting plate 601 arranged inside the lithium battery cell body 1 for the vehicle, two wires 602 are mounted on the mounting plate 601, connectors 603 are fixed to one ends of two electrode plates 2 by the two wires 602, capacitors 604 are connected to the other ends of the two wires 602, electromagnets 605 are connected to the wires 602, L-shaped plates 606 are fixed to the connecting plate 502, iron blocks are arranged at one ends of the L-shaped plates 606 by the electromagnets 605, a pulling assembly 7 for pulling the mounting plate 601 under high pressure is arranged inside the lithium battery cell body 1 for the vehicle, limiting assemblies 8 for limiting the movement positions of the L-shaped plates 606 are arranged inside the lithium battery cell body 1 for the vehicle, the two wires 602 on the mounting plate 601 are driven to synchronously move and are respectively abutted to the two electrode plates 2 in the movement process, a passage is formed between the two electrode plates 2, the two wires 602 and the capacitors 604, the electromagnet 605 is charged through the two electrode plates 2, and the electromagnet 605 is enabled to be electrified in the charging process, and magnetic force is generated on the wires 605, and the electromagnet is driven to move towards one ends of the L-shaped plates 606 by the electromagnet 605 under the action of the force of the L-shaped plates 606.
The pulling assembly 7 comprises a fixing plate 701 fixed inside the lithium battery cell body 1 for the vehicle, an operation tube 702 is mounted on the fixing plate 701, a piston rod 703 is connected to the operation tube 702 in a sliding manner, one end of the piston rod 703 is fixed to one side of the mounting plate 601, when the negative pressure effect in the cell is reduced, the piston rod 703 is pushed to move towards the operation tube 702 under the action of the internal pressure of the lithium battery cell body 1 for the vehicle, and the mounting plate 601 is driven to move towards the operation tube 702 synchronously in the moving process of the piston rod 703.
The limiting assembly 8 comprises a limiting plate 801 arranged inside the lithium battery cell body 1 for the vehicle, the limiting plate 801 is positioned in front of the movement direction of the L-shaped plate 606 after being stressed, a second inclined plane 802 is formed in the side, close to the L-shaped plate 606, of the limiting plate 801, an adjusting assembly 9 for adjusting the position of the limiting plate 801 and a guiding assembly 10 for guiding movement of the limiting plate 801 in the adjusting process are arranged inside the lithium battery cell body 1 for the vehicle, when the operation box 3 is exhausted by extruding the extruding plate 403, the extruding plate 403 is abutted against the second inclined plane 802 on the limiting plate 801, the extruding plate 403 is limited by the second inclined plane 802, and the travel of the extruding plate 403 is controlled conveniently.
The adjusting component 9 comprises a threaded rod 902 which is rotationally connected to the lithium battery cell body 1 for the vehicle, a threaded pipe 901 is connected to the threaded rod 902 in a threaded engagement manner, one end of the threaded pipe 901 is fixed to the upper end of the limiting plate 801, a rotating wheel 903 is fixed to the other end of the threaded rod 902, the threaded rod 902 is driven to rotate through the rotating wheel 903, in the rotating process of the threaded rod 902, the limiting plate 801 is forced to lift and move through the guiding action of the guiding component 10 through the mutual engagement transmission between the threaded rod 902 and the threaded pipe 901, the limiting plate 801 is forced to lift and move, the limiting plate 403 is forced to abut against different positions of the second inclined surface 802 on the limiting plate 801 and limit the positions of the limiting plate, the stroke distance of the movement of the limiting plate 403 is adjusted through the adjustment of the movement stroke of the limiting plate 403, the amount of gas pushed out of the operating box 3 by the limiting plate 403 is convenient to be adjusted according to the actual use condition, and the amount of exhaust is further convenient to be adjusted according to the actual use condition, and the fact that the inside of the lithium battery cell body 1 for the vehicle is difficult to be guaranteed to be in a vacuum negative pressure state due to too much or too low exhaust.
The guiding assembly 10 comprises a first mounting tube 1001 fixed at the upper end of a limiting plate 801, a first sliding rod 1002 is slidably connected to the first mounting tube 1001, the other end of the first sliding rod 1002 is fixed with the inside of a lithium battery cell body 1 for a vehicle, a control assembly 11 for controlling the internal pressure of the lithium battery cell body 1 for the vehicle in the adjusting process of the limiting plate 801 is arranged in the lithium battery cell body 1 for the vehicle, and the movement of the limiting plate 801 after being stressed is guided through the first sliding rod 1002 and the first mounting tube 1001.
The control assembly 11 comprises a strip-shaped plate 1101 arranged inside the lithium battery cell body 1 for the vehicle, two second mounting pipes 1102 are fixed at the upper end of the strip-shaped plate 1101, second sliding rods 1103 are connected to the two second mounting pipes 1102 in a sliding manner, the other ends of the two second sliding rods 1103 are fixed with the inside of the lithium battery cell body 1 for the vehicle, a transmission assembly 12 used for driving the strip-shaped plate 1101 is arranged between the limiting plate 801 and the strip-shaped plate 1101, in the lifting adjustment process of the limiting plate 801, the threaded rod 902 slides on the threaded pipe 901 and the first sliding rods 1002 slide on the first mounting pipes 1001, so that the internal pressure of the lithium battery cell body 1 for the vehicle is changed, in the movement process of the limiting plate 801, the two second sliding rods 1103 slide on the two second mounting pipes 1102 respectively, the sliding direction of the two second sliding rods 1002 is opposite to that of the sliding direction of the first sliding rods 1002 on the first mounting pipes 1001, the threaded rod 902 slides on the threaded pipe 901 and the first sliding rods 1002 on the first mounting pipes 1001, the internal pressure of the lithium battery cell body 1 for the vehicle is caused to change, the internal pressure of the lithium battery cell body 1 for the vehicle is ensured, and the internal pressure of the lithium battery cell 1 for the vehicle is further improved, and the internal pressure of the lithium battery cell 1 for the vehicle is ensured.
The transmission assembly 12 comprises a supporting plate 1201 arranged between a limiting plate 801 and a strip-shaped plate 1101, the supporting plate 1201 is fixed in the lithium battery cell body 1 of the vehicle, a rotating shaft 1202 is rotationally connected to the supporting plate 1201, a connecting rod 1203 is fixed to the rotating shaft 1202, two ends of the connecting rod 1203 are rotationally connected with one side of the limiting plate 801 and one side of the strip-shaped plate 1101 respectively, and in the process of moving the limiting plate 801, the strip-shaped plate 1101 is pushed to move in the opposite direction of the limiting plate 801 by the transmission of the rotating shaft 1202 and the connecting rod 1203 on the supporting plate 1201.
The unidirectional plugging assembly 13 comprises a conical groove 1301 arranged inside the air outlet pipe 402, the conical groove 1301 is arranged inside the air outlet pipe 402 and is close to one side of the operation box 3, an air ventilation plate 1302 is fixed inside the air outlet pipe 402, a plugging ball 1303 for plugging the conical groove 1301 is arranged on the conical groove 1301, a second spring 1304 is arranged between the plugging ball 1303 and the air ventilation plate 1302, the plugging ball 1303 is abutted against the conical groove 1301 under the action of the elastic force of the second spring 1304, when the air outlet pipe 402 is used, the plugging ball 1303 is pushed against the conical groove 1301 through the second spring 1304 to plug the inside of the air outlet pipe 402, and when the air outlet pipe 402 is used for exhausting, the outside air is prevented from entering the inside of the vehicle lithium battery cell body 1 through the air outlet pipe 402, the plugging ball 1303 is pushed not to be abutted against the conical groove 1301 any more through the air pressure inside the operation box 3, and the air is conveniently and rapidly exhausted, so that the air on the air outlet pipe 402 can be used for exhausting and also can be used for sealing and protecting.
Working principle: in the using process of the lithium battery cell body 1 for the vehicle, when electrolyte is decomposed due to the fact that the water content is too high and the voltage is charged beyond 4.5 volts in the lithium battery cell body 1 for the vehicle, and when gas is generated in the cells such as internal short-circuit temperature rising electrolyte gasification and the like due to the fact that large current is charged and discharged, positive and negative pole pieces slide in a dislocation manner to cause internal short-circuit ignition, when negative pressure effect in the cells is reduced, under the action of the internal pressure of the lithium battery cell body 1 for the vehicle, a piston rod 703 is pushed to move towards the inside of an operation tube 702 under the action of the internal pressure of the lithium battery cell body 1 for the vehicle, in the moving process of the piston rod 703, a mounting plate 601 is driven to synchronously move towards the operation tube 702, in the moving process of the mounting plate 601, two wires 602 on the mounting plate 601 are driven to synchronously move, connectors 603 at one ends of the two wires 602 are driven to respectively prop against the two electrode pieces 2, at this time, a passage is formed between the two electrode plates 2, the two wires 602 and the capacitor 604, the two electrode plates 2 are used for charging the inside of the capacitor 604, in the charging process, voltage is generated on the wires 602 to enable the electromagnet 605 to be electrified to generate magnetic force, under the action of the magnetic force of the electromagnet 605 and one end of the L-shaped plate 606, the L-shaped plate 606 is pulled to be stressed to move towards the electromagnet 605, in the moving process of the L-shaped plate 606, the extrusion plate 403 is pushed to be stressed to slide in the operation box 3 through the connecting plate 502 and the transmission rod 503, in the sliding process of the extrusion plate 403 is pushed to slide in the operation box 3, because the first inclined plane 404 is formed on one side of the extrusion plate 403, the sectional area of the extrusion plate 403 leaning towards the end face of the air inlet 401 is larger than the sectional area of the extrusion plate 403 leaning towards the end of the air outlet pipe 402, in the stressed sliding process of the extrusion plate 403 is enabled to be plugged by one end of the extrusion plate 403, after plugging the air inlet 401 is completed, through the continuous movement of the extrusion plate 403, the gas in the operation box 3 is discharged outwards through the gas outlet pipe 402, in the process of pushing the connection plate 502 to move, the movement of the connection plate 502 is guided through the fixing rod 501 and drives the first spring 504 to deform under force to generate elasticity, along with the continuous electrifying and conveying of the two electrode plates 2 and the wires 602 in the capacitor 604, when the voltage in the capacitor 604 is equal to the voltage on the two electrode plates 2, the voltage on the two wires 602 is zero at the moment, the electromagnet 605 does not generate magnetic force to pull the L-shaped plate 606 any more, at the moment, the extrusion plate 403, the transmission rod 503 and the connection plate 502 reset under the action of the elasticity of each first spring 504, in the whole operation process, the operation box 3 is communicated with the inside of the vehicle lithium battery cell body 1, and the internal part gas in the operation box 3 is discharged outwards through the gas outlet pipe 402 and the reset of the extrusion plate 403, so that the internal part of the vehicle lithium battery cell body 1 is kept in a vacuum negative pressure state, and the safety of the vehicle lithium battery cell body 1 is further improved;
when the inside of the operation box 3 is extruded and exhausted through the extrusion plate 403, the extrusion plate 403 is propped against a second inclined plane 802 on the limit plate 801, the extrusion plate 403 is limited through the second inclined plane 802, the stroke of the extrusion plate 403 is conveniently controlled, in the whole limit control process, the threaded rod 902 is driven to rotate through the rotating wheel 903, in the rotating process of the threaded rod 902, the limit plate 801 is stressed to perform lifting movement through the mutual meshing transmission between the threaded rod 902 and the threaded pipe 901 and the guiding action of the first mounting pipe 1001 and the first sliding rod 1002, the extrusion plate 403 is propped against different positions of the second inclined plane 802 on the limit plate 801 and is limited through the lifting movement of the limit plate 801, the stroke distance of the movement of the extrusion plate 403 is adjusted through the propping against the extrusion plate 403 at different positions on the second inclined plane 802, the stroke of the extrusion plate 403 is conveniently adjusted according to the actual use condition, the air quantity pushed out by the extrusion plate 403 in the operation box 3 is conveniently adjusted according to the actual use condition, the air quantity is conveniently adjusted, and the lithium battery cell body is difficult to ensure that the inside of a vehicle battery cell is in a vacuum state under the condition that the internal negative pressure is difficult to be in a low;
in the process of lifting and adjusting the limiting plate 801, the threaded rod 902 slides on the threaded pipe 901 and the first sliding rod 1002 slides on the first mounting pipe 1001, so that the internal pressure of the vehicle lithium battery cell body 1 changes, in the process of moving the limiting plate 801, the rotating shaft 1202 and the connecting rod 1203 on the supporting plate 1201 are driven to push the strip plate 1101 to move in opposite directions of the limiting plate 801, in the process of moving the strip plate 1101, the two second sliding rods 1103 slide on the two second mounting pipes 1102 respectively, the sliding direction is opposite to the sliding direction of the first sliding rod 1002 on the first mounting pipe 1001, the threaded rod 902 slides on the threaded pipe 901 and the first sliding rod 1002 slides on the first mounting pipe 1001, so that the internal pressure change of the vehicle lithium battery cell body 1 is eliminated, the internal vacuum pressure state of the vehicle lithium battery cell body 1 in the use process is ensured, and the use stability of the vehicle lithium battery cell body 1 is further improved.
Claims (8)
1. The utility model provides a vacuum negative pressure structure of automobile-used lithium cell electricity core, includes automobile-used lithium cell electricity core body (1) and sets up two electrode slice (2) on automobile-used lithium cell electricity core body (1), its characterized in that: an operation box (3) is arranged in the lithium battery cell body (1) for the vehicle, and an air extraction component (4) for keeping the internal pressure of the lithium battery cell body (1) for the vehicle is arranged on the operation box (3);
the air exhaust assembly (4) comprises an air inlet hole (401) and an air outlet pipe (402) which are arranged on the operation box (3), one end of the air outlet pipe (402) is communicated with the outside of the battery cell body (1) of the vehicle lithium battery, a unidirectional plugging assembly (13) for unidirectional plugging of the inside of the air outlet pipe (402) is arranged on the air outlet pipe (402), an extrusion plate (403) is connected onto the operation box (3) in a sliding manner, the extrusion plate (403) and the inside of the operation box (3) are arranged in a mutually matched manner, a first inclined surface (404) is formed in one side of the extrusion plate (403), and an extrusion assembly (5) for extruding air inside the operation box (3) is arranged on the operation box (3);
the extrusion assembly (5) comprises a plurality of fixing rods (501) fixed on the operation box (3), each fixing rod (501) is connected with a connecting plate (502) in a sliding manner, one side, close to the operation box (3), of each connecting plate (502) is fixed with a transmission rod (503), the other end of each transmission rod (503) is fixed with the extrusion plate (403), the side wall of each fixing rod (501) is sleeved with a first spring (504), and a pushing assembly (6) for driving the connecting plate (502) is arranged in the lithium battery cell body (1) for the vehicle;
the pushing assembly (6) comprises a mounting plate (601) arranged inside the vehicle lithium battery cell body (1), two wires (602) are arranged on the mounting plate (601), one ends of the wires (602) leaning against the two electrode plates (2) are fixedly provided with connectors (603), the other ends of the wires (602) are connected with capacitors (604), the wires (602) are connected with electromagnets (605), the connecting plate (502) is fixedly provided with L-shaped plates (606), one ends of the L-shaped plates (606) leaning against the electromagnets (605) are provided with iron blocks, a pulling assembly (7) for pulling the mounting plate (601) under high pressure is arranged inside the vehicle lithium battery cell body (1), and limiting assemblies (8) used for limiting the movement positions of the L-shaped plates (606) are arranged inside the vehicle lithium battery cell body (1).
2. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 1, wherein: the pulling assembly (7) comprises a fixing plate (701) fixed inside the lithium battery cell body (1) for the vehicle, an operation pipe (702) is installed on the fixing plate (701), a piston rod (703) is connected to the operation pipe (702) in a sliding mode, and one end of the piston rod (703) is fixed to one side of the mounting plate (601).
3. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 1, wherein: limiting component (8) is including setting up limiting plate (801) in automobile-used lithium cell battery cell body (1), limiting plate (801) are located the place ahead of L template (606) atress back direction of motion, limiting plate (801) lean on one side of L template (606) and have been seted up second inclined plane (802), the inside of automobile-used lithium cell battery cell body (1) is provided with adjusting component (9) that are used for limiting plate (801) use position adjustment and guiding component (10) of limiting plate (801) motion direction in the adjustment process.
4. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 3, wherein: the adjusting component (9) comprises a threaded rod (902) which is rotatably connected to the lithium battery cell body (1) of the vehicle, a threaded pipe (901) is connected to the threaded rod (902) in a threaded engagement mode, one end of the threaded pipe (901) is fixed to the upper end of the limiting plate (801), and a rotating wheel (903) is fixed to the other end of the threaded rod (902).
5. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 4, wherein: the guide assembly (10) comprises a first installation tube (1001) fixed at the upper end of a limiting plate (801), a first sliding rod (1002) is connected to the first installation tube (1001) in a sliding mode, the other end of the first sliding rod (1002) is fixed with the inside of a lithium battery cell body (1) for a vehicle, and a control assembly (11) for controlling the internal pressure of the lithium battery cell body (1) for the vehicle in the adjustment process of the limiting plate (801) is arranged in the lithium battery cell body (1) for the vehicle.
6. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 5, wherein: the control assembly (11) comprises a strip-shaped plate (1101) arranged inside the lithium battery cell body (1) for the vehicle, two second mounting pipes (1102) are fixed at the upper ends of the strip-shaped plate (1101), second sliding rods (1103) are connected to the second mounting pipes (1102) in a sliding mode, the other ends of the second sliding rods (1103) are fixed with the inside of the lithium battery cell body (1) for the vehicle, and a transmission assembly (12) for the transmission of the strip-shaped plate (1101) is arranged between the limiting plate (801) and the strip-shaped plate (1101).
7. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 6, wherein: the transmission assembly (12) comprises a supporting plate (1201) arranged between a limiting plate (801) and a strip-shaped plate (1101), the supporting plate (1201) is fixed inside a lithium battery cell body (1) for a vehicle, a rotating shaft (1202) is rotationally connected to the supporting plate (1201), a connecting rod (1203) is fixed to the rotating shaft (1202), and two ends of the connecting rod (1203) are rotationally connected with one sides of the limiting plate (801) and one side of the strip-shaped plate (1101) respectively.
8. The vacuum negative pressure structure of a lithium battery cell for a vehicle according to claim 1, wherein: the one-way shutoff subassembly (13) is including setting up in the inside conical groove (1301) of outlet duct (402), conical groove (1301) set up in the inside one side of leaning on to control box (3) of outlet duct (402), the inside of outlet duct (402) is fixed with aeration board (1302), be provided with on conical groove (1301) and be used for conical groove (1301) shutoff ball (1303), be provided with second spring (1304) between shutoff ball (1303) and aeration board (1302), shutoff ball (1303) offset setting with conical groove (1301) under the elasticity effect of second spring (1304).
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| CN202758979U (en) * | 2012-06-07 | 2013-02-27 | 张孝敏 | Electric core of lithium iron phosphate battery for staring automobile |
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| CN105047985A (en) * | 2015-06-23 | 2015-11-11 | 昆明五威科工贸有限公司 | Safety protection method and device for lithium battery and lithium battery |
| CN206116533U (en) * | 2016-09-23 | 2017-04-19 | 深圳市海芝通电子股份有限公司 | Bleeder lithium is from formula battery structure |
| CN207690884U (en) * | 2017-12-21 | 2018-08-03 | 张家港清研再制造产业研究院有限公司 | A kind of lithium-ion battery systems safety guard |
| NO20180252A1 (en) * | 2018-02-19 | 2019-08-20 | Rolls Royce Marine As | Marine energy storage unit |
| CN209993663U (en) * | 2019-04-29 | 2020-01-24 | 苏州安靠电源有限公司 | Battery pack |
| CN209730109U (en) * | 2019-05-21 | 2019-12-03 | 固德电材系统（苏州）股份有限公司 | A kind of battery hot-fluid actively detaches device |
| KR20220008602A (en) * | 2020-07-14 | 2022-01-21 | 주식회사 엘지에너지솔루션 | Venting device and battery pack assembly including same, and vehicle including the battery pack assembly |
| CN213583986U (en) * | 2020-12-08 | 2021-06-29 | 江门市博硕塑胶电子有限公司 | High-strength biological steel lithium ion battery shell |
| CN215418482U (en) * | 2021-07-05 | 2022-01-04 | 湖北钛时代新能源有限公司 | Lithium battery vacuum exhaust device |
| CN218334171U (en) * | 2022-08-31 | 2023-01-17 | 无锡先导智能装备股份有限公司 | Exhaust device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202758979U (en) * | 2012-06-07 | 2013-02-27 | 张孝敏 | Electric core of lithium iron phosphate battery for staring automobile |
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