CN115832600A - 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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- CN115832600A CN115832600A CN202310105748.7A CN202310105748A CN115832600A CN 115832600 A CN115832600 A CN 115832600A CN 202310105748 A CN202310105748 A CN 202310105748A CN 115832600 A CN115832600 A CN 115832600A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a vacuum negative pressure structure of a lithium battery cell for a vehicle, and relates to the technical field of lithium batteries. The lithium battery cell body 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 inside the lithium battery cell body for the vehicle, and an air exhaust assembly used for maintaining the internal pressure of the lithium battery cell body for the vehicle is arranged on the operation box; the air exhaust component 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 battery cell, at the in-process of whole operation, because of the inside of control box and automobile-used lithium battery cell body communicates with each other, through the outside discharge of outlet duct and the reseing of stripper plate with the inside part gas of control box, is convenient for keep automobile-used lithium battery cell body inside to be in the vacuum negative pressure state, the security in the further automobile-used lithium battery cell body use that improves.
Description
Technical Field
The invention relates to the technical field of vehicle lithium batteries, in particular to a vacuum negative pressure structure of a vehicle lithium battery core.
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 property and the like because some technical properties of the nickel-hydrogen battery, such as energy density, charge and discharge speed and the like, are close to theoretical limit values.
The lithium battery cell is a core part of the lithium battery and is divided into three types, namely 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 an aluminum-plastic composite film, and is divided into at least three layers: the middle layer is an aluminum layer and plays a role in isolating moisture; the outer layer is a glue layer and plays a role in protecting aluminum from being oxidized by the external environment; the inner layer is a glue layer and plays a role in sealing and preventing the electrolyte from corroding the aluminum layer. The aluminum plastic film is formed by punching and is manufactured into a required shell shape.
When the moisture content of the vehicle lithium battery cell is too high in the using process, the battery cell exceeds 4.5V voltage for charging, so that electrolyte is decomposed, large current is charged too much, once gas is generated in the cell, positive and negative pole pieces slide in a staggered manner, internal short circuit fire is caused, the negative pressure effect in the cell is reduced, and certain danger is brought to the use of the vehicle lithium battery cell.
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 purpose, the invention provides the following technical scheme: a vacuum negative pressure structure of a vehicle lithium battery cell comprises a vehicle lithium battery cell body and two electrode plates arranged on the vehicle lithium battery cell body, wherein an operation box is arranged inside the vehicle lithium battery cell body, and an air exhaust assembly used for maintaining the internal pressure of the vehicle lithium battery cell body 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, one end of the air outlet pipe is communicated with the outside of the lithium battery cell body for the vehicle, an unidirectional plugging assembly used for unidirectional plugging inside the air outlet pipe is arranged on the air outlet pipe, an extrusion plate is connected to the operation box in a sliding mode, the extrusion plate is matched with the inside of the operation box, a first inclined plane is formed in one side of the extrusion plate, and an extrusion assembly used for extruding gas inside the operation box is arranged on the operation box.
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 mode, one side, close to the operation box, of the connecting plate is fixedly provided with a transmission rod, the other end of the transmission rod is fixedly connected with the extrusion plate, each fixing rod is sleeved with a first spring on the side wall, and a pushing assembly used for driving the connecting plate is arranged inside the lithium battery cell body for the vehicle.
Preferably, promote the subassembly including setting up the inside mounting panel at automobile-used lithium battery electricity core body, install two wires on the mounting panel, two the wire is by being fixed with the connector to the one end of two electrode slices, two the other end of wire is connected with electric capacity, be connected with the electro-magnet on the wire, be fixed with the L template on the connecting plate, the L template is by being provided with the iron plate to the one end of electro-magnet, the inside of automobile-used lithium battery electricity core body is provided with the pulling subassembly to the mounting panel pulling under the high pressure, the inside of automobile-used lithium battery electricity core body is provided with and is used for the spacing subassembly of L template motion position.
Preferably, the pulling assembly comprises a fixing plate fixed inside the vehicle lithium battery cell body, an operating pipe is installed on the fixing plate, a piston rod is connected to the operating pipe in a sliding mode, and one end of the piston rod is fixed to one side of the mounting plate.
Preferably, limiting component is including setting up the limiting plate in automobile-used lithium battery cell body inside, the limiting plate is located the place ahead of L template atress back direction of motion, the second inclined plane has been seted up to one side that the limiting plate leaned on to the L template, automobile-used lithium battery cell body's inside is provided with the direction subassembly that is used for the adjustment subassembly of limiting plate position of use adjustment and limiting plate motion direction in the adjustment process.
Preferably, the adjusting part comprises a threaded rod connected to the vehicle lithium battery cell body in a rotating mode, a threaded pipe is connected to the threaded rod in a threaded engagement mode, 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 is including fixing the first installation pipe in the limiting plate upper end, sliding connection has first slide bar on the first installation pipe, the other end of first slide bar is fixed mutually with automobile-used lithium battery cell body's inside, automobile-used lithium battery cell body's inside is provided with the control assembly who is used for limiting plate adjustment in-process automobile-used lithium battery cell body internal pressure control.
Preferably, the control assembly is including setting up at the inside bar of automobile-used lithium battery electricity core body, and the upper end of bar is fixed with two second installation pipes, two sliding connection has the second slide bar, two on the second installation pipe the other end of second slide bar is fixed with automobile-used lithium battery electricity core body's inside, be provided with between limiting plate and the bar and be used for the driven transmission assembly of bar.
Preferably, transmission assembly is including setting up the backup pad between limiting plate and strip shaped plate, the inside at automobile-used lithium battery electricity core body is fixed to the backup pad, it is connected with the pivot to rotate in the backup pad, be fixed with the connecting rod in the pivot, the both ends of connecting rod rotate with one side of limiting plate and strip shaped plate respectively and are connected.
Preferably, one-way shutoff subassembly is including setting up the awl type groove in the outlet duct inside, awl type groove setting is inside leaning on one side to the control box at the outlet duct, the inside of outlet duct is fixed with the breather plate, be provided with the shutoff ball that is used for the shutoff of awl type groove on the awl type groove, be provided with the second spring between shutoff ball and the breather plate, the shutoff ball supports the setting with awl type groove under the spring action of 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 battery cell, at the in-process of whole operation, because of the inside of control box and automobile-used lithium battery cell body communicates with each other, through the outside discharge of outlet duct and the reseing of stripper plate with the inside part gas of control box, is convenient for keep automobile-used lithium battery cell body inside to be in the vacuum negative pressure state, the security in the further automobile-used lithium battery cell body use that improves.
(2) This kind of vacuum negative pressure structure of automobile-used lithium battery cell, rotate through runner drive threaded rod, at threaded rod pivoted in-process, through the guiding action of intermeshing transmission and direction subassembly between threaded rod and the screwed pipe, make the limiting plate atress carry out elevating movement, elevating movement through the limiting plate, make the position that the second inclined plane is different offset on stripper plate and the limiting plate and carry out spacingly, it is spacing to offset with the stripper plate through different positions on the second inclined plane, the stroke distance of motion behind the adjustment stripper plate atress, through the adjustment of stripper plate motion stroke, be convenient for adjust the quantity of gas that the stripper plate released to the control box inside according to the in-service use condition, further be convenient for adjust carminative volume according to the in-service behavior, avoid once exhausting too much or cross low being difficult to guarantee that automobile-used lithium battery cell body is inside to be in vacuum negative pressure state.
(3) This kind of vacuum negative pressure structure of automobile-used lithium battery cell, at the in-process of limiting plate lift adjustment, slide and first slide bar slides on first installation pipe because of the threaded rod on the screwed pipe, cause automobile-used lithium battery cell body internal pressure to change, and at the in-process of limiting plate motion, through transmission assembly, make two second slide bars slide on two second installation pipes respectively, and gliding direction is opposite at the slip direction of first installation pipe with first slide bar, to sliding and first slide bar slides on first installation pipe because of the threaded rod on the screwed pipe, cause the change that automobile-used lithium battery cell body internal pressure takes place to eliminate, guarantee that automobile-used lithium battery cell body inside is in the vacuum pressure state in the use, further improvement the stability of automobile-used lithium battery cell body use.
Drawings
FIG. 1 is a schematic view of the overall configuration of the present invention;
FIG. 2 is a schematic view of the internal structure of the pumping assembly of the present invention;
FIG. 3 is a schematic structural view of a position 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 at A in FIG. 1;
FIG. 6 is an enlarged view of the structure 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; 402. an air outlet pipe; 403. a pressing plate; 404. a first inclined plane; 5. an extrusion assembly; 501. a fixing rod; 502. a connecting plate; 503. a transmission rod; 504. a first spring; 6. a pushing assembly; 601. mounting a plate; 602. a wire; 603. a connector; 604. a capacitor; 605. an electromagnet; 606. an L-shaped plate; 7. a pulling assembly; 701. a fixing plate; 702. operating the tube; 703. a piston rod; 8. a limiting component; 801. a limiting plate; 802. a second inclined plane; 9. an adjustment assembly; 901. a threaded pipe; 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 component; 1101. a strip 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 one-way plugging component; 1301. a tapered groove; 1302. a breather plate; 1303. plugging the ball; 1304. a second spring.
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. 1-7, the present invention provides a technical solution: a vacuum negative pressure structure of a vehicle lithium battery cell comprises a vehicle lithium battery cell body 1 and two electrode plates 2 arranged on the vehicle lithium battery cell body 1, wherein an operation box 3 is arranged inside the vehicle lithium battery cell body 1, and an air exhaust assembly 4 for maintaining the internal pressure of the vehicle lithium battery cell body 1 is arranged on the operation box 3;
the air extracting assembly 4 comprises an air inlet 401 and an air outlet 402 which are arranged on the operation box 3, one end of the air outlet 402 is communicated with the outside of the lithium battery cell body 1 for the vehicle, a one-way plugging assembly 13 for plugging the inside of the air outlet 402 in a one-way manner is arranged on the air outlet 402, an extrusion plate 403 is connected on the operation box 3 in a sliding manner, the extrusion plate 403 is matched with the inside of the operation box 3, a first inclined plane 404 is arranged on one side of the extrusion plate 403, an extrusion assembly 5 for extruding the gas inside the operation box 3 is arranged on the operation box 3, the extrusion plate 403 is pushed to slide in the operation box 3 by the extrusion assembly 5, the extrusion plate 403 is stressed in the sliding process inside the operation box 3, the air inlet 401 is plugged by one end of the extrusion plate 403 in the stressed sliding process of the extrusion plate 403, and after plugging is completed, the gas inside the operation box 3 is discharged to the outside through the air outlet 402 by the continuous movement of the extrusion plate 403.
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 an extrusion plate 403, the side wall of each fixing rod 501 is sleeved with a first spring 504, a pushing assembly 6 used for driving the connecting plates 502 is arranged inside the lithium battery cell body 1 for the vehicle, in the process of movement of the L-shaped plates 606, the extrusion plates 403 are pushed to slide in the operation box 3 under stress through the connecting plates 502 and the transmission rods 503, in the process of pushing the connecting plates 502 to move, the fixing rods 501 guide the movement of the connecting plates 502 and drive the first springs 504 to deform under stress to generate elastic force, and the extrusion plates 403 are pushed to reset under the elastic force of the first springs 504.
The pushing assembly 6 comprises an installation plate 601 arranged inside a vehicle lithium battery cell body 1, two wires 602 are installed on the installation plate 601, connectors 603 are fixed at one ends of the two wires 602 close to two electrode plates 2, the other ends of the two wires 602 are connected with capacitors 604, electromagnets 605 are connected to the wires 602, an L-shaped plate 606 is fixed on the connection plate 502, an iron block is arranged at one end of the L-shaped plate 606 close to the electromagnets 605, a pulling assembly 7 which is pulled towards the installation plate 601 under high pressure is arranged inside the vehicle lithium battery cell body 1, a limiting assembly 8 for limiting the movement position of the L-shaped plate 606 is arranged inside the vehicle lithium battery cell body 1, the two wires 602 on the installation plate 601 are driven to move synchronously in the movement process of the installation plate 601, the connectors 603 at one ends of the two wires 602 are driven to respectively abut against the two electrode plates 2, a passage is formed between the two electrode plates 2, the two wires 602 and the capacitors 604 at the moment, the insides of the capacitors 604 are charged through the two electrode plates 2, and in the charging process, voltage is generated on the wires 602 to enable the electromagnets 605 to generate power-on the electromagnets 605 to move under the action of the magnetic force of the electromagnets 605 and pull towards the L-shaped plates 606.
The pulling assembly 7 comprises a fixing plate 701 fixed inside the vehicle lithium battery cell body 1, an operation tube 702 is installed on the fixing plate 701, a piston rod 703 is connected to the operation tube 702 in a sliding mode, 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 lowered, the piston rod 703 is pushed to move by being forced to the inside of the operation tube 702 under the effect of the internal pressure of the vehicle lithium battery cell body 1, and the mounting plate 601 is driven to move by being forced to the inside of the operation tube 702 in the moving process of the piston rod 703.
Limiting component 8 is including setting up the limiting plate 801 in automobile-used lithium battery cell body 1 inside, limiting plate 801 is located the place ahead of the direction of motion behind the L template 606 atress, second inclined plane 802 has been seted up to limiting plate 801 by one side to L template 606, automobile-used lithium battery cell body 1's inside is provided with the direction subassembly 10 that is used for the adjusting part 9 of limiting plate 801 service position adjustment and the direction of limiting plate 801 motion direction in the adjustment process, when exhausting through the inside extrusion of stripper plate 403 to control box 3, make stripper plate 403 offset with second inclined plane 802 on the limiting plate 801, carry on spacingly to stripper plate 403 through second inclined plane 802, be convenient for control the stroke of stripper plate 403.
The adjusting assembly 9 includes a threaded rod 902 rotatably connected to the lithium battery cell body 1 for a 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 by the rotating wheel 903, in the rotating process of the threaded rod 902, the limiting plate 801 is forced to move up and down by the aid of the transmission of the threaded rod 902 and the threaded pipe 901 in an engagement manner and the guiding effect of the guiding assembly 10, the extrusion plate 801 is forced to move up and down by the aid of the lifting movement of the limiting plate 801, the extrusion plate 403 abuts against different positions of the second inclined plane 802 on the limiting plate 801 to limit the position, the extrusion plate 403 abuts against different positions on the second inclined plane 802 to limit the position, the stroke distance of the extrusion plate 403 after being forced to move is adjusted, the amount of gas released from the extrusion plate 403 inside the operating box 3 is adjusted according to actual use conditions, further adjustment of the amount of exhaust gas according to actual use conditions, and excessive exhaust gas or low gas is avoided, and the vacuum negative pressure state inside the lithium battery cell body 1 is difficult to guarantee.
The guide assembly 10 is including fixing the first installation pipe 1001 in limiting plate 801 upper end, sliding connection has first slide bar 1002 on the first installation pipe 1001, the other end of first slide bar 1002 is fixed mutually with automobile-used lithium battery cell body 1's inside, automobile-used lithium battery cell body 1's inside is provided with the control assembly 11 that is used for limiting plate 801 adjustment in-process automobile-used lithium battery cell body 1 internal pressure to control, through first slide bar 1002 and first installation pipe 1001, guide the motion of limiting plate 801 after the atress.
The control assembly 11 includes a strip-shaped plate 1101 disposed inside the vehicle lithium battery cell body 1, two second mounting pipes 1102 are fixed to the upper end of the strip-shaped plate 1101, a second sliding rod 1103 is slidably connected to the two second mounting pipes 1102, the other end of the two second sliding rods 1103 is fixed to the inside of the vehicle lithium battery cell body 1, a transmission assembly 12 for transmission of the strip-shaped plate 1101 is disposed between the limiting plate 801 and the strip-shaped plate 1101, during the process of lifting and adjusting the limiting plate 801, because the threaded rod 902 slides on the threaded pipe 901 and the first sliding rod 1002 slides on the first mounting pipe 1001, the internal pressure of the vehicle lithium battery cell body 1 changes, and during the movement of the limiting plate 801, through the transmission assembly 12, the two second sliding rods 1103 slide on the two second mounting pipes 1102 respectively, and the sliding direction of the first sliding rod 1002 is opposite to the sliding direction of the first mounting pipe 1001, the sliding on the threaded pipe 901 and the first sliding rod 1002 slide on the first mounting pipe 1001, the sliding direction of the first sliding rod 1002 slides on the first mounting pipe 1001, the internal pressure of the vehicle lithium battery cell body 1 changes, and the internal pressure of the vehicle lithium battery cell body is further improved in the use process of the lithium battery cell 1.
The unidirectional plugging component 13 comprises a conical groove 1301 arranged inside the air outlet pipe 402, the conical groove 1301 is arranged on one side, close to the operation box 3, inside the air outlet pipe 402, a vent plate 1302 is fixed inside the air outlet pipe 402, a plugging ball 1303 used 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 vent plate 1302, the plugging ball 1303 is abutted to the conical groove 1301 under the elastic force action of the second spring 1304, when the air outlet pipe 402 is used, the plugging ball 1303 is pushed to abut against the conical groove 1301 through the second spring 1304 to plug the inside of the air outlet pipe 402, external gas is prevented from entering the inside of the vehicle lithium battery cell body 1 through the air outlet pipe 402, when the air outlet pipe 402 is used for exhausting, the air pressure inside the operation box 3 pushes the plugging ball 1303 not to abut against the conical groove 1301 any more, at this time, the gas is conveniently exhausted, and the air on the air outlet pipe 402 can be used for protecting and also can be sealed.
The working principle is as follows: when the moisture content in the lithium battery cell body 1 for the vehicle is too high and exceeds 4.5V voltage for charging, so that the electrolyte is decomposed, the large current is charged and discharged too much, once the electrolyte is generated in the cell such as internal short circuit temperature rise electrolyte gasification, the positive and negative pole pieces slide in a dislocation way to cause internal short circuit ignition, and the negative pressure effect in the cell is reduced, under the action of the internal pressure of the lithium battery cell body 1 for the vehicle, the piston rod 703 is pushed to move towards the inside of the operating tube 702 under stress, in the process of the movement of the piston rod 703, the mounting plate 601 is driven to move towards the operating tube 702 synchronously, in the process of the movement of the mounting plate 601, the two leads 602 on the mounting plate 601 are driven to move synchronously, in the process of the movement, the connectors 603 at one end of the two leads 602 are respectively abutted against the two electrode slices 2, and at the same time, a passage is formed between the two electrode slices 2, the two leads 602 and the capacitor 604, the inside of the capacitor 604 is charged through the two electrode plates 2, in the charging process, voltage is generated on the lead 602 to enable the electromagnet 605 to be electrified to generate magnetic force, the L-shaped plate 606 is pulled to be stressed to move towards the electromagnet 605 under the action of the magnetic force between the electromagnet 605 and one end of the L-shaped plate 606, 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 process that the extrusion plate 403 is stressed to slide in the operation box 3, because one side of the extrusion plate 403 is provided with the first inclined surface 404, the sectional area of the end surface of the extrusion plate 403 close to the air inlet hole 401 is larger than the sectional area of the end of the extrusion plate 403 close to the air outlet pipe 402, in the process that the extrusion plate 403 is stressed to slide, the air inlet hole 401 is firstly sealed through one end of the extrusion plate 403, and after the sealing is completed, through the continuous movement of the extrusion plate 403, the gas inside 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 fixed rod 501 guides the movement of the connection plate 502 and drives the first spring 504 to deform under stress to generate elastic force, the two electrode plates 2 and the conducting wires 602 are used for continuously electrifying and conveying the inside of the capacitor 604, when the voltage inside the capacitor 604 is equal to the voltage on the two electrode plates 2, the voltage on the two conducting wires 602 is zero at the moment, so that the magnetic force is not generated on the electromagnet 605 to pull the L-shaped plate 606 any more, at the moment, the extrusion plate 403, the driving rod 503 and the connection plate 502 are reset under the elastic force action of each first spring 504, and in the whole operation process, because the inside of the operation box 3 and the lithium battery cell body 1 for the vehicle is communicated, the gas inside the operation box 3 is discharged outwards through the gas outlet pipe 402 and the extrusion plate 403 is reset, so that the inside of the lithium battery cell body for the vehicle is kept in a vacuum negative pressure state, and the safety of the lithium battery cell body 1 for the vehicle is further improved in the use process;
when the interior of the operation box 3 is extruded and exhausted through the extrusion plate 403, the extrusion plate 403 is abutted against a second inclined surface 802 on the limit plate 801, the extrusion plate 403 is limited through the second inclined surface 802, so that the stroke of the extrusion plate 403 is conveniently controlled, in the whole limiting control process, the threaded rod 902 is driven to rotate through the rotating wheel 903, in the rotating process of the threaded rod 902, 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 limit plate 801 is forced to move up and down, through the lifting movement of the limit plate 801, different positions of the extrusion plate 403 and the second inclined surface 802 on the limit plate 801 are abutted against each other and limited, through different positions on the second inclined surface 802 and the extrusion plate 403 are abutted against each other for limiting, the stroke distance of the extrusion plate 403 after being stressed is adjusted, through the adjustment of the movement stroke of the extrusion plate 403, so that the extrusion plate 403 can be conveniently adjusted to push out the interior of the operation box 3 according to actual use conditions, further, the adjustment of the exhaust amount according to the actual use condition is convenient, and the situation that too much exhaust gas volume is avoided or the interior of the lithium battery cell for a lithium battery car is difficult to ensure that the vacuum state 1 is in which is in the vacuum state;
in the process of adjusting the lifting of the limiting plate 801, because the threaded rod 902 slides on the threaded pipe 901 and the first sliding rod 1002 slides on the first mounting pipe 1001, the internal pressure of the lithium battery cell body 1 for the vehicle changes, and in the process of moving the limiting plate 801, the strip-shaped plate 1101 is pushed to move in the direction opposite to the direction of the limiting plate 801 through the transmission of the rotating shaft 1202 and the connecting rod 1203 on the supporting plate 1201, in the process of moving the strip-shaped plate 1101, the two second sliding rods 1103 slide on the two second mounting pipes 1102 respectively, and 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 change of the internal pressure of the lithium battery cell body 1 for the vehicle is eliminated, it is ensured that the inside of the lithium battery cell body 1 for the vehicle is in a vacuum pressure state in the use process, and the use stability of the lithium battery cell body 1 for the vehicle is further improved.
Claims (10)
1. The utility model provides a vacuum negative pressure structure of automobile-used lithium cell electric core, includes automobile-used lithium cell electric core body (1) and sets up two electrode slice (2) on automobile-used lithium cell electric core body (1), its characterized in that: an operation box (3) is arranged inside the vehicle lithium battery cell body (1), and an air exhaust assembly (4) used for maintaining the internal pressure of the vehicle lithium battery cell body (1) 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 lithium battery cell body (1) for the vehicle, the air outlet pipe (402) is provided with a one-way plugging assembly (13) used for one-way plugging of the inside of the air outlet pipe (402), the operation box (3) is connected with an extrusion plate (403) in a sliding mode, the extrusion plate (403) is matched with the inside of the operation box (3) in a matched mode, one side of the extrusion plate (403) is provided with a first inclined plane (404), and the operation box (3) is provided with an extrusion assembly (5) used for extruding the gas inside the operation box (3).
2. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 1, characterized in that: extrusion subassembly (5) are including fixing a plurality of dead levers (501) on control box (3), each sliding connection has connecting plate (502) on dead lever (501), connecting plate (502) are by being fixed with transfer line (503) to one side of control box (3), the other end and the stripper plate (403) of transfer line (503) are fixed mutually, each the cover is equipped with first spring (504) on the lateral wall of dead lever (501), the inside of automobile-used lithium cell electricity core body (1) is provided with and is used for pushing away subassembly (6) to connecting plate (502) driven.
3. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 2, characterized in that: promote subassembly (6) including setting up at inside mounting panel (601) of automobile-used lithium battery electricity core body (1), install two wire (602), two on mounting panel (601) wire (602) are by being fixed with connector (603) to the one end of two electrode slice (2), two the other end of wire (602) is connected with electric capacity (604), be connected with electro-magnet (605) on wire (602), be fixed with L template (606) on connecting plate (502), L template (606) are by being provided with the iron plate to the one end of electro-magnet (605), the inside of automobile-used lithium battery electricity core body (1) is provided with pulling subassembly (7) to mounting panel (601) pulling under the high pressure, the inside of automobile-used lithium battery electricity core body (1) is provided with and is used for spacing subassembly (8) of L template (606) motion position.
4. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 3, characterized in that: pulling subassembly (7) is including fixing fixed plate (701) inside automobile-used lithium battery electricity core body (1), install operation pipe (702) on fixed plate (701), sliding connection has piston rod (703) on operation pipe (702), the one end of piston rod (703) is fixed mutually with one side of mounting panel (601).
5. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 3, characterized in that: spacing subassembly (8) are including setting up limiting plate (801) inside automobile-used lithium battery cell body (1), limiting plate (801) are located L template (606) atress back direction of motion's the place ahead, second inclined plane (802) have been seted up to limiting plate (801) by one side to L template (606), the inside of automobile-used lithium battery cell body (1) is provided with direction subassembly (10) that are used for limiting plate (801) use position adjustment's adjustment subassembly (9) and adjustment in-process limiting plate (801) motion direction.
6. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 5, characterized in that: the adjusting assembly (9) comprises a threaded rod (902) rotatably connected to the vehicle lithium battery cell body (1), a threaded pipe (901) is connected to the threaded rod (902) in a meshed 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).
7. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 6, characterized in that: direction subassembly (10) is including fixing first installation pipe (1001) in limiting plate (801) upper end, sliding connection has first slide bar (1002) on first installation pipe (1001), the other end of first slide bar (1002) is fixed mutually with the inside of automobile-used lithium battery electricity core body (1), the inside of automobile-used lithium battery electricity core body (1) is provided with control assembly (11) that are used for limiting plate (801) adjustment in-process automobile-used lithium battery electricity core body (1) internal pressure control.
8. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 7, characterized in that: control assembly (11) is including setting up at inside bar plate (1101) of automobile-used lithium battery electricity core body (1), and the upper end of bar plate (1101) is fixed with two second installation pipes (1102), two sliding connection has second slide bar (1103), two on second installation pipe (1102) the other end of second slide bar (1103) is fixed with the inside of automobile-used lithium battery electricity core body (1), be provided with between limiting plate (801) and bar plate (1101) and be used for driven transmission assembly (12) of bar plate (1101).
9. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 8, characterized in that: 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 the lithium battery cell body (1) for the vehicle, a rotating shaft (1202) is connected to the supporting plate (1201) in a rotating mode, a connecting rod (1203) is fixed on the rotating shaft (1202), and two ends of the connecting rod (1203) are respectively connected with one side of the limiting plate (801) and one side of the strip-shaped plate (1101) in a rotating mode.
10. The vacuum negative pressure structure of the lithium battery cell for the vehicle of claim 1, characterized in that: one-way shutoff subassembly (13) are including setting up at inside tapered groove (1301) of outlet duct (402), tapered groove (1301) set up in outlet duct (402) inside one side by to control box (3), the inside of outlet duct (402) is fixed with breather plate (1302), be provided with shutoff ball (1303) that are used for tapered groove (1301) shutoff on tapered groove (1301), be provided with second spring (1304) between shutoff ball (1303) and breather plate (1302), shutoff ball (1303) offset the setting with tapered groove (1301) under the spring action of second spring (1304).
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| CN115832600B (en) | 2023-05-05 |
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