CN221057618U - Battery monomer, battery package and power consumption device - Google Patents
Battery monomer, battery package and power consumption device Download PDFInfo
- Publication number
- CN221057618U CN221057618U CN202420490445.1U CN202420490445U CN221057618U CN 221057618 U CN221057618 U CN 221057618U CN 202420490445 U CN202420490445 U CN 202420490445U CN 221057618 U CN221057618 U CN 221057618U
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- Prior art keywords
- explosion
- proof valve
- exhaust port
- battery
- battery cell
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- 239000000178 monomer Substances 0.000 title claims abstract description 17
- 239000012212 insulator Substances 0.000 claims description 7
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000003792 electrolyte Substances 0.000 description 27
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 10
- 238000011900 installation process Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical compound [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The embodiment of the application provides a battery monomer, a battery pack and an electricity utilization device, which belong to the technical field of batteries and comprise a shell, a polar post, a bare cell and an explosion-proof valve. The shell has and holds chamber, gas vent and location portion, and the gas vent is with holding the chamber intercommunication, and location portion encircles around the gas vent, and location portion protrusion is in the shell one side that deviates from holding the chamber, and the utmost point post is installed in the shell, and naked electric core is located and holds the intracavity, and the utmost point ear and the utmost point post electricity of naked electric core are connected, and explosion-proof valve is installed in the shell, and explosion-proof valve is located the space that location portion encloses to establish in order to seal the gas vent. According to the battery monomer, the positioning part is arranged to protrude out of one side of the shell, which is away from the accommodating cavity, so that the outwards protruding positioning part is convenient for accurately positioning the mounting position of the explosion-proof valve, the accuracy of positioning the explosion-proof valve is improved, the outwards protruding positioning part can restrict the position of the explosion-proof valve in the process of mounting the explosion-proof valve, and the explosion-proof valve is conveniently mounted on the shell, so that the convenience of mounting the explosion-proof valve is improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery monomer, a battery pack and an electric device.
Background
An explosion-proof valve is arranged on the shell of the battery cell and is used for releasing pressure to the space in the shell. When the air pressure in the shell of the battery monomer is overlarge, the explosion-proof valve is opened under the action of the air pressure in the shell so as to avoid the explosion of the shell of the battery.
In the related art, in the installation process of the explosion-proof valve, the installation is relatively inconvenient.
Disclosure of utility model
In order to solve the technical problems, the application provides a battery monomer, a battery pack and an electric device so as to improve the convenience of the installation of an explosion-proof valve.
The application is realized by the following technical scheme.
A first aspect of an embodiment of the present application provides a battery cell, including:
The shell is provided with a containing cavity, an exhaust port and a positioning part, the exhaust port is communicated with the containing cavity, the positioning part surrounds the periphery of the exhaust port, and the positioning part protrudes out of one side of the shell away from the containing cavity;
A pole mounted to the housing;
The bare cell is positioned in the accommodating cavity, and a tab of the bare cell is electrically connected with the pole;
The explosion-proof valve is arranged on the shell and is positioned in the space surrounded by the positioning part so as to seal the exhaust port.
In the embodiment of the application, the positioning part is arranged to protrude out of one side of the housing, which is away from the accommodating cavity, so that on one hand, the outwards protruding positioning part is convenient for accurately positioning the mounting position of the explosion-proof valve, and the positioning accuracy of the explosion-proof valve is improved. In the second aspect, the positioning portion protruding outwards can restrict the position of the explosion-proof valve in the process of installing the explosion-proof valve, so that the explosion-proof valve is conveniently installed on the shell, and the convenience of installing the explosion-proof valve is improved. In the third aspect, the positioning part is arranged on one side protruding from the housing and deviating from the accommodating cavity, so that the explosion-proof valve can be arranged on one side of the housing and deviating from the accommodating cavity, and therefore the explosion-proof valve can be firstly arranged after electrolyte is injected into the accommodating cavity through the exhaust port, the installation of the explosion-proof valve is not influenced after electrolyte injection, the electrolyte is injected through the exhaust port by fully utilizing the exhaust port, and in addition, the additional liquid injection hole is not required to be arranged on the housing, so that the structure is simplified.
In one embodiment, the positioning portion is arranged to extend continuously along the circumferential direction of the exhaust port.
In the embodiment of the application, the positioning parts which are arranged in a continuous extending way have higher strength and integrity, so that the possibility of damage to the positioning parts protruding out of one side of the housing away from the accommodating cavity in the process of installing the explosion-proof valve is reduced.
In one embodiment, the positioning portion is spaced apart from the exhaust port.
In the embodiment of the application, the positioning part and the exhaust port are arranged at intervals, so that a certain distance exists between the surface of one side of the positioning part facing the explosion-proof valve and the inner wall surface of the exhaust port, and the explosion-proof valve can be quickly positioned in the space surrounded by the positioning part in the process of mounting the explosion-proof valve on the shell, and the support force can be provided for the explosion-proof valve, thereby facilitating the mounting of the explosion-proof valve.
In an embodiment, a surface of the positioning portion facing one side of the explosion-proof valve is a constraint surface, and the constraint surface is arranged at equal intervals with an inner wall surface of the exhaust port.
In the embodiment of the application, the constraint surface and the inner wall surface of the exhaust port are arranged at equal intervals, so that the whole stress of the explosion-proof valve is uniform in the installation process, and the explosion-proof valve is not easy to damage, so that the yield of the battery unit is improved.
In an embodiment, the distance between the constraint surface and the inner wall surface of the exhaust port is a target distance, the area of a projection area formed by the explosion-proof valve along the axial projection of the exhaust port is a target area, when the target area is greater than 630mm 2, the target distance is greater than 3.5mm, and the target distance is less than or equal to 4.5mm.
In the embodiment of the application, when the target area is larger than 630mm 2, the area of the explosion-proof valve is larger, the bending resistance is lower, the target distance can be a value within the range of more than 3.5mm and less than or equal to 4.5mm, and the contact area between the surface of the explosion-proof valve, which is close to one side of the accommodating cavity along the axial direction of the battery monomer, and the shell is increased, so that the overall stress performance of the explosion-proof valve in the installation process is improved, the damage possibility of the explosion-proof valve is reduced, and the yield of the battery monomer is improved.
In an embodiment, the distance between the constraint surface and the inner wall surface of the exhaust port is a target distance, the area of a projection area formed by the explosion-proof valve in an axial projection of the exhaust port is a target area, and when the target area is less than or equal to 630mm 2, the target distance is greater than or equal to 3mm, and the target distance is less than or equal to 3.5mm.
In the embodiment of the application, when the target area is smaller than or equal to 630mm 2, the area of the explosion-proof valve is smaller, the bending resistance is higher, the target distance can be a value within the range of being larger than or equal to 3mm and smaller than or equal to 3.5mm, the contact area between the surface of the explosion-proof valve, which is close to one side of the accommodating cavity along the axial direction of the battery monomer, and the shell is properly reduced, and under the condition that the overall stress performance of the explosion-proof valve in the installation process is basically met, the exhaust port has a proper area for exhausting or injecting liquid, so that the production cost of the battery monomer is reduced.
In one embodiment, the housing comprises:
A housing;
The end cover is installed in the casing, the end cover with the casing encloses to be established to hold the chamber, the quantity of end cover is at least one, at least one the end cover is formed with the location portion, at least one install the utmost point post on the end cover, the end cover deviates from hold one side of chamber and have first surface and second surface, first surface encircles the location portion deviates from one side of explosion-proof valve, the second surface is located the space that the location encloses to establish, the second surface is located along the axial of gas vent the first surface deviates from hold chamber one side, the end cover orientation hold the surface of one side of chamber and be located a plane.
In the embodiment of the application, the surface of the end cover facing one side of the accommodating cavity is positioned in a plane, and the second surface is higher than the first surface along the axial direction of the exhaust port, so that the end cover has larger thickness at the position of the second surface under the condition that the space inside the accommodating cavity is not occupied by the end cover, and the explosion-proof valve can better bear alternating load generated by the expansion and the contraction of the bare cell.
In an embodiment, the battery unit further includes an insulating member, the insulating member is connected to a side of the end cover facing away from the positioning portion, and the insulating member is located in the accommodating cavity.
In the embodiment of the application, the insulating piece is arranged on one side of the end cover, which is away from the corresponding positioning part, so that the possibility of electric leakage of the battery cell to the outside is reduced, and the safety performance and the service life of the battery cell are improved. In the second aspect, the surface of the side, facing the accommodating cavity, of the end cover is located in a plane, so that the surface of the side, facing the accommodating cavity, of the end cover is smooth, the insulating piece is convenient to install, and accordingly, the shape of the insulating piece can be smooth. In the third aspect, the exhaust port of the shell is used as the electrolyte injection hole, so that the insulator does not need to be provided with a corresponding opening through a stamping device, the manufacturing cost of the insulator is reduced, the consistency and the insulativity of the insulator are improved, the insulator can play a certain role in blocking the electrolyte in the process that the electrolyte is injected into the battery unit through the exhaust port, the flow rate of the electrolyte is reduced, and the impact force of the electrolyte on the bare cell in the battery unit is reduced.
In an embodiment, the battery cell further comprises a protection piece, and the protection piece covers one side of the explosion-proof valve, which is away from the accommodating cavity.
In the embodiment of the application, the protection piece covers the surface of one side of the explosion-proof valve, which is away from the accommodating cavity, so as to protect the explosion-proof valve and prolong the service life of the explosion-proof valve.
A second aspect of an embodiment of the present application provides a battery pack including:
the battery cell of any one of the preceding embodiments;
the battery monomer is arranged in the box body.
A third aspect of an embodiment of the present application provides an electric device, including:
the battery pack of any one of the preceding embodiments;
the battery pack is arranged on the power utilization device body and provides power for the power utilization device body.
The utility model has the following effects:
According to the embodiment of the application, the positioning part is arranged to protrude out of one side of the housing, which is away from the accommodating cavity, so that on one hand, the outwards protruding positioning part is convenient for accurately positioning the mounting position of the explosion-proof valve, thereby being beneficial to improving the positioning accuracy of the explosion-proof valve, and on the other hand, the outwards protruding positioning part can restrict the position of the explosion-proof valve in the process of mounting the explosion-proof valve, thereby being convenient for mounting the explosion-proof valve on the housing and improving the mounting convenience of the explosion-proof valve.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:
FIG. 1 is an assembly view of an end cap, an explosion proof valve, an insulator and a shield member according to one embodiment of the present application, wherein the explosion proof valve is covered by the shield member;
FIG. 2 is an exploded view of the structure shown in FIG. 1;
FIG. 3 is a schematic view of an end cap according to an embodiment of the present application;
FIG. 4 is a schematic view of the structure of section A-A of FIG. 3;
FIG. 5 is an enlarged schematic view of the structure at B in FIG. 4;
FIG. 6 is a schematic cross-sectional view of a battery cell according to an embodiment of the application, not shown;
fig. 7 is an exploded perspective view of a battery pack according to an embodiment of the present application;
Fig. 8 is a schematic structural diagram of an electric device according to an embodiment of the application.
Description of the reference numerals
100. A battery cell; 1. a housing; 1a, an exhaust port; 1aa, inner wall surface; 1b, a positioning part; 1ba, constraint surface; 1c, a containing cavity; 11. an end cap; 11a, a first surface; 11b, a second surface; 12. a housing; 2. an explosion-proof valve; 3. an insulating member; 4. a guard; 5. a bare cell; 200. a battery pack; 210. a case; 211. a bottom plate; 212. a cover body; 213. a vertical plate; 300. an electric device; 310. an electric device body; 311. a controller; 312. a motor.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion.
In the description of embodiments of the present application, the technical terms "first," "second," "third," etc. are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" generally indicates that the associated object is an "or" relationship.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the term "contact" is to be understood in a broad sense as either direct contact or contact across an intermediate layer, as either contact with substantially no interaction force between the two in contact or contact with interaction force between the two in contact.
As part of the inventive concept, before describing the embodiments of the present application, the reasons for the relatively inconvenient installation in the related art should be analyzed, and the technical solution of the embodiments of the present application should be obtained through reasonable analysis.
In the related art, the surface of the shell of the battery monomer is flat, and the explosion-proof valve is directly arranged at the exhaust port of the shell. The shell with a flat surface is not restricted to the explosion-proof valve in the installation process of the explosion-proof valve, and the position of the explosion-proof valve may need to be adjusted for many times to cover the explosion-proof valve to the exhaust port, so that the positioning accuracy is low, and the installation is inconvenient.
According to the embodiment of the application, the positioning part is arranged on the shell of the battery monomer, so that the explosion-proof valve can be rapidly positioned on the exhaust port of the shell in the installation process, the position of the explosion-proof valve can be restrained, and the installation of the explosion-proof valve is facilitated. In addition, the exhaust port of the shell can be used as a liquid injection hole of electrolyte, the electrolyte is injected first, then the explosion-proof valve is installed, and the liquid injection hole is not required to be processed on the surface of the shell, so that the processing procedures of production and manufacture of the battery monomer are reduced, and the tightness of the battery monomer is improved.
The scheme of the embodiment of the application can be applied to a battery cell, a battery pack and an electric device, but is not limited to the application of the scheme. Through setting up location portion on the shell for in the installation of explosion-proof valve, the shell can retrain the position of explosion-proof valve, the installation of the explosion-proof valve of being convenient for.
The embodiment of the application provides an electric device 300, which comprises a battery pack 200 and an electric device body 310. The battery pack 200 is disposed on the power consumption device body 310, and the battery pack 200 provides power for the power consumption device body 310.
The power utilization device 300 may be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft, etc. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, spacecraft, and the like.
In the following embodiments, for convenience of description, the electric device 300 according to an embodiment of the present application is described as an example of a vehicle. The following description is made with reference to fig. 8.
Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like. As shown in fig. 8, the battery pack 200 is provided in the interior of the vehicle, and the battery pack 200 may be provided at the bottom or the head or the tail of the vehicle. The battery pack 200 may be used for power supply of a vehicle, for example, the battery pack 200 may serve as an operating power source of the vehicle. The vehicle may include an electric utility body 310, the electric utility body 310 including a controller 311 and a motor 312, the controller 311 being configured to control the battery pack 200 to power the motor 312, for example, for operating electric demands during start-up, navigation, and travel of the vehicle.
In some embodiments of the present application, the battery pack 200 may be used not only as an operating power source for a vehicle, but also as a driving power source for a vehicle, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle.
An embodiment of the application provides a battery pack 200, please refer to fig. 7, including a battery cell 100 and a case 210. The battery cell 100 is disposed in the case 210.
The case 210 is a structure having an accommodating space, and the battery cells 100 are positioned in the case 210, and the battery cells 100 of the battery pack 200 are accommodated by the case 210.
Fig. 7 is an exploded perspective view of a battery pack 200 according to an embodiment of the present application. As shown in fig. 7, the case 210 includes a bottom plate 211, a cover 212, and a vertical plate 213, and the cover 212 covers over the bottom plate 211, thereby forming a receiving space of the battery cell 100 between the bottom plate 211 and the cover 212.
The battery cell 100 may be a cylindrical battery cell, a prismatic battery cell, or a battery cell of other shapes, including a square-case battery cell, a blade-shaped battery cell, a polygonal-prismatic battery, such as a hexagonal-prismatic battery, etc., and the present application is not particularly limited.
The number of the battery cells 100 may be plural, and the plural battery cells 100 may be connected in series, parallel, or a series-parallel connection, where a series-parallel connection refers to that the plural battery cells 100 are connected in series or parallel. The battery pack 200 is formed by directly connecting a plurality of battery cells 100 in series, parallel or series-parallel. Of course, the plurality of battery cells 100 may be connected in series or parallel or series-parallel to form a battery module, and then connected in series or parallel or series-parallel to form the battery pack 200. The battery pack 200 may further include other structures, for example, the battery pack 200 may further include a bus bar member for making electrical connection between the plurality of battery cells 100.
The battery cell 100 refers to a basic unit capable of achieving the mutual conversion of chemical energy and electric energy.
In the embodiment of the present application, the battery cell 100 may be a secondary battery, and the secondary battery refers to the battery cell 100 that can be continuously used by activating the active material in a charging manner after the battery cell 100 is discharged.
In the embodiment of the present application, the battery unit 100 may be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, or the like, which is not limited in the embodiment of the present application.
The battery cell 100 of the embodiment of the application includes a case 1 and a bare cell 5 disposed in the case 1. The case 1 includes an end cap 11 and a case 12, the case 12 is provided with an opening, and the end cap 11 closes the opening to form a closed space for accommodating the bare cell 5, electrolyte, and the like. The housing 12 may be provided with one or more openings. The end cap 11 may also be provided with one or more openings.
The casing 1 is provided with an explosion-proof valve 2. The explosion-proof valve 2 serves to discharge the internal pressure of the battery cell 100. The explosion-proof valve 2 is an important component of the battery cell 100.
Referring to fig. 1, 2 and 6, a battery cell 100 according to an embodiment of the present application includes a housing 1, a pole, a bare cell 5 and an explosion-proof valve 2. The shell 1 has and holds chamber 1c, gas vent 1a and location portion 1b, gas vent 1a and hold chamber 1c intercommunication, location portion 1b encircles around gas vent 1a, location portion 1b protrusion is in the shell 1 one side that deviates from holding chamber 1c, the utmost point post is installed in shell 1, naked electric core 5 is located and holds chamber 1c, the utmost point ear and the utmost point post electricity of naked electric core 5 are connected, explosion-proof valve 2 is installed in shell 1, explosion-proof valve 2 is located the space that location portion 1b encloses and establishes in order to seal gas vent 1a.
The battery cell 100 is not limited in structure, and may be a square battery cell structure or a blade battery cell, for example.
The kind of material of the housing 1 is not limited, and may be, for example, an aluminum case or a steel case.
The kind of material of the explosion-proof valve 2 is not limited, and may be aluminum or steel, for example.
The shape of the explosion-proof valve 2 is not limited, and may be square or oblong, for example.
The kind of the explosion-proof valve 2 is not limited, and may be, for example, a scored explosion-proof valve.
The shape of the exhaust port 1a is not limited, and may be, for example, square or rectangular in shape, in conformity with the shape of the explosion-proof valve 2.
The manner of connecting the explosion-proof valve 2 to the housing 1 is not limited, and may be, for example, adhesion or welding.
For example, referring to fig. 2, the explosion-proof valve 2 is configured in an oblong shape, the exhaust port 1a is also configured in an oblong shape, and the explosion-proof valve 2 is located in a space surrounded by the positioning portion 1b and welded to the housing 1 to close the exhaust port 1a.
For example, the positioning portion 1b protruding from the housing 1 on the side facing away from the receiving chamber 1c may be integrally formed with the shell 12 of the housing 1, or may be connected by machining after the shell 12 of the housing 1 is formed.
In the embodiment of the application, the positioning part 1b is arranged to protrude from one side of the housing 1 away from the accommodating cavity 1c, so that on one hand, the positioning part 1b protruding outwards is convenient for positioning the mounting position of the explosion-proof valve 2 more accurately, and is beneficial to improving the positioning accuracy of the explosion-proof valve 2. In the second aspect, the outwardly protruding positioning portion 1b can restrict the position of the explosion-proof valve 2 in the process of mounting the explosion-proof valve 2, facilitating the mounting of the explosion-proof valve 2 on the housing 1, so as to improve the convenience of the mounting of the explosion-proof valve 2. In the third aspect, the positioning portion 1b is arranged on one side protruding from the housing 1 and deviating from the accommodating cavity 1c, so that the explosion-proof valve 2 can be installed on one side of the housing 1 and deviating from the accommodating cavity 1c, and therefore the explosion-proof valve 2 can be installed after electrolyte is injected into the accommodating cavity 1c through the exhaust port 1a, the installation of the explosion-proof valve 2 is not affected after the electrolyte is injected, the electrolyte is injected through the exhaust port 1a fully, and in addition, an additional liquid injection hole is not needed on the housing 1, so that the structure is simplified.
In the manufacturing process of the battery cell 100, the electrolyte is injected first, and then the explosion-proof valve 2 is installed, so that damage caused by injection of the electrolyte and pollution to the explosion-proof valve 2 are avoided, and the possibility of failure of the explosion-proof valve 2 caused by a machining process is reduced. The exhaust port 1a of the housing 1 can also be used as a liquid injection hole for electrolyte, and the liquid injection hole is not required to be processed on the surface of the housing 1 through a punching device, so that the processing procedures of the production and the manufacture of the battery cell 100 are reduced, and the tightness of the battery cell 100 is improved. The larger exhaust port 1a can be used as a liquid injection hole to improve the liquid injection flow rate of the electrolyte so as to improve the liquid injection efficiency of the electrolyte, and can also reduce the liquid injection flow rate of the electrolyte so as to reduce the impact force of the electrolyte on the bare cell 5 in the battery cell 100 due to too high flow rate.
Illustratively, the electrolyte is injected into the interior of the battery cell 100 through the exhaust port 1a at a large flow rate, the explosion-proof valve 2 is welded to the housing 1 in the space surrounded by the positioning portion 1b, and the exhaust port 1a is closed.
It is understood that one or more poles may be provided on the case 1 of the battery cell 100.
Illustratively, the opposite sides of the housing 1 may each be provided with a pole.
For example, the housing 1 may be provided with a pole on one side and not provided with a pole on the other side.
In one embodiment, referring to fig. 1 to 3, the positioning portion 1b is continuously arranged along the circumferential direction of the exhaust port 1 a.
For example, referring to fig. 1 to 3, the exhaust port 1a is configured in an oblong shape, and the positioning portion 1b is arranged in an oblong shape extending continuously in the circumferential direction of the exhaust port 1 a.
In the embodiment of the application, the positioning part 1b which is arranged in a continuous extending way has higher strength and integrity, so that the possibility of damage to the positioning part 1b protruding from the side of the housing 1 away from the accommodating cavity 1c in the process of installing the explosion-proof valve 2 is reduced.
It is understood that the arrangement of the positioning portions 1b is not limited. Illustratively, the positioning portion 1b includes at least two positioning sub-portions that are arranged at intervals along the circumferential direction of the exhaust port 1 a.
In one embodiment, referring to fig. 3 to 6, the positioning portion 1b is spaced from the air outlet 1 a.
It should be noted that the positioning portion 1b is disposed apart from the exhaust port 1a, and the surface of the positioning portion 1b facing the explosion-proof valve 2 is disposed apart from the inner wall surface 1aa of the exhaust port 1 a.
In the embodiment of the application, the positioning part 1b is arranged at intervals with the exhaust port 1a, so that a certain distance exists between the surface of one side of the positioning part 1b facing the explosion-proof valve 2 and the inner wall surface 1aa of the exhaust port 1a, and the explosion-proof valve 2 can be quickly positioned in the space surrounded by the positioning part 1b in the process of installing the explosion-proof valve 2 on the shell 1, and the support force can be provided for the explosion-proof valve 2, thereby facilitating the installation of the explosion-proof valve 2.
It is understood that the positional relationship between the positioning portion 1b and the exhaust port 1a is not limited. Illustratively, the surface of the positioning portion 1b facing the side of the explosion-proof valve 2 is arranged in alignment with the inner wall surface 1aa of the exhaust port 1a, and the explosion-proof valve 2 is mounted in the space surrounded by the positioning portion 1 b.
In one embodiment, referring to fig. 3 to 5, a surface of the positioning portion 1b facing the side of the explosion-proof valve 2 is a constraint surface 1ba, and the constraint surface 1ba is disposed at equal intervals with an inner wall surface 1aa of the air outlet 1 a.
It should be noted that the constraint surface 1ba is disposed at equal intervals from the inner wall surface 1aa of the exhaust port 1a means that the distance between the constraint surface 1ba and the inner wall surface 1aa of the exhaust port 1a is a certain value. The shape of the restriction surface 1ba is substantially the same as that of the inner wall surface 1aa of the exhaust port 1a, and the dimensions of the restriction surface 1ba and the inner wall surface 1aa of the exhaust port 1a are different.
In the embodiment of the application, the constraint surface 1ba and the inner wall surface 1aa of the exhaust port 1a are arranged at equal intervals, so that the whole stress of the explosion-proof valve 2 is uniform in the installation process, and the explosion-proof valve 2 is not easy to damage, so that the yield of the battery cell 100 is improved.
It is to be understood that the arrangement pitch of the restriction surface 1ba and the inner wall surface 1aa of the exhaust port 1a is not limited. Illustratively, the distance between the restricting surface 1ba and the inner wall surface 1aa of the exhaust port 1a may increase or decrease in the circumferential direction of the exhaust port 1 a.
In an embodiment, referring to fig. 3 to 5, the distance between the constraint surface 1ba and the inner wall surface 1aa of the exhaust port 1a is a target distance, the area of a projection area formed by the explosion-proof valve 2 projected along the axial direction of the exhaust port 1a is a target area, and when the target area is greater than 630mm 2, the target distance is greater than 3.5mm, and the target distance is less than or equal to 4.5mm.
It will be appreciated that as the target area changes, the target spacing is also adjusted accordingly to ensure the sealing performance of the battery cell 100.
It will be appreciated that the manner in which the target pitch is measured is not limited. The target distance may be measured by means of a vernier caliper or a tape measure, for example.
Illustratively, the target spacing may be 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, or 4.5mm.
In the embodiment of the application, when the target area is larger than 630mm 2, the area of the explosion-proof valve 2 is larger, the bending resistance is lower, the target distance can be valued within the range of being larger than 3.5mm and smaller than or equal to 4.5mm, and the contact area between the surface of the explosion-proof valve 2, which is close to one side of the accommodating cavity 1c along the axial direction of the battery cell 100, and the shell 1 is increased, so that the overall stress performance of the explosion-proof valve 2 in the installation process is improved, the damage possibility of the explosion-proof valve 2 is reduced, and the yield of the battery cell 100 is improved.
In an embodiment, referring to fig. 3 to 5, the distance between the constraint surface 1ba and the inner wall surface 1aa of the exhaust port 1a is a target distance, the area of a projection area formed by the explosion-proof valve 2 projected along the axial direction of the exhaust port 1a is a target area, and when the target area is less than or equal to 630mm 2, the target distance is greater than or equal to 3mm, and the target distance is less than or equal to 3.5mm.
It will be appreciated that the manner in which the target pitch is measured is not limited. The target distance may be measured by means of a vernier caliper or a tape measure, for example.
Illustratively, the target spacing may be 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, or 3.5mm.
In the embodiment of the application, when the target area is less than or equal to 630mm 2, the area of the explosion-proof valve 2 is smaller, the bending resistance is higher, the target distance can be a value within the range of more than or equal to 3mm and less than or equal to 3.5mm, the contact area between the surface of the explosion-proof valve 2, which is close to one side of the accommodating cavity 1c along the axial direction of the battery cell 100, and the shell 1 is properly reduced, and under the condition that the overall stress performance of the explosion-proof valve 2 in the installation process is basically met, the exhaust port 1a has a proper area for exhausting or injecting liquid, so that the production cost of the battery cell 100 is reduced.
In one embodiment, referring to fig. 3 to 6, the housing 1 includes a shell 12 and an end cap 11. The end cover 11 is installed in the casing 12, and end cover 11 and casing 12 enclose to hold chamber 1c, and the quantity of end cover 11 is at least one, and at least one end cover 11 is formed with location portion 1b, installs the utmost point post on at least one end cover 11, and the end cover 11 is facing away from and holds chamber 1 c's one side and has first surface 11a and second surface 11b, and first surface 11a encircles and is facing away from explosion-proof valve 2 in location portion 1 b's one side, and second surface 11b is located the space that location portion 1b encloses, and second surface 11b is located first surface 11a along the axial direction of gas vent 1a and is facing away from and hold chamber 1 c's one side, and the surface of end cover 11 facing towards to hold chamber 1 c's one side is located one plane.
It should be noted that the second surface 11b is located on the side of the first surface 11a facing away from the accommodating chamber 1c along the axial direction of the exhaust port 1a means that the second surface 11b is not in the same plane as the first surface 11a, and the second surface 11b is higher than the first surface 11a along the axial direction of the exhaust port 1a, and the surface of the side of the end cap 11 facing toward the accommodating chamber 1c is located in a plane such that the thickness of the end cap 11 at the position of the second surface 11b is greater than the thickness of the end cap 11 at the position of the first surface 11 a.
In the embodiment of the application, the surface of the end cover 11 facing to one side of the accommodating cavity 1c is positioned in a plane, and the second surface 11b is higher than the first surface 11a along the axial direction of the exhaust port 1a, so that the end cover 11 can have larger thickness at the position of the second surface 11b without occupying the space inside the accommodating cavity 1c, and the alternating load of the explosion-proof valve 2 due to the expansion and contraction of the bare cell 5 can be better borne.
It is understood that the positional relationship of the first surface 11a and the second surface 11b may not be limited. Illustratively, the first surface 11a and the second surface 11b lie in the same plane.
It is understood that the positioning portion 1b may be formed in the housing 12. Illustratively, the housing 12 has an air outlet 1a and a positioning portion 1b, a side of the housing 12 facing away from the accommodating chamber 1c has a first surface 11a and a second surface 11b, the first surface 11a surrounds a side of the positioning portion 1b facing away from the explosion-proof valve 2, the second surface 11b is located in a space surrounded by the positioning portion 1b, the second surface 11b is located on a side of the first surface 11a facing away from the accommodating chamber 1c in an axial direction of the air outlet 1a, and a surface of a side of the housing 12 facing toward the accommodating chamber 1c is located in one plane.
In an embodiment, referring to fig. 2 and 6, the battery unit 100 further includes an insulating member 3, where the insulating member 3 is connected to a side of the end cover 11 facing away from the corresponding positioning portion 1b, and the insulating member 3 is located in the accommodating cavity 1 c.
In the embodiment of the application, the insulating member 3 is arranged on one side of the end cover 11, which is away from the corresponding positioning part 1b, so that the possibility of electric leakage of the battery cell 100 to the outside is reduced, and the safety performance and the service life of the battery cell 100 are improved. In the second aspect, the surface of the end cover 11 facing the side of the accommodating chamber 1c is located in a plane, so that the surface of the end cover 11 facing the side of the accommodating chamber 1c is relatively flat, the insulating member 3 is convenient to mount, and accordingly, the shape of the insulating member 3 can be set relatively flat. In the third aspect, the exhaust port 1a of the housing 1 is used as a filling hole for electrolyte, so that the insulating member 3 does not need to be provided with a corresponding opening by a punching device, so that the manufacturing cost of the insulating member 3 is reduced, the consistency and the insulativity of the insulating member 3 are improved, and in the process that the electrolyte is filled into the battery cell 100 through the exhaust port 1a, the insulating member 3 can play a certain role in blocking the electrolyte so as to reduce the flow velocity of the electrolyte, and then the impact force of the electrolyte on the bare cell 5 in the battery cell 100 is reduced.
In one embodiment, referring to fig. 2, the battery cell 100 further includes a protection member 4, where the protection member 4 covers a side of the explosion-proof valve 2 facing away from the accommodating chamber 1 c.
Illustratively, the material of the guard 4 is not limited and may be, for example, polyester or polyvinyl chloride.
In the embodiment of the application, the protection piece 4 covers the surface of one side of the explosion-proof valve 2 away from the accommodating cavity 1c, so as to protect the explosion-proof valve 2 and prolong the service life of the explosion-proof valve 2.
It will be appreciated that the side of the explosion-proof valve 2 facing away from the receiving chamber 1c may also be provided without the protective element 4.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and they should be construed as falling within the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.
Claims (11)
1. A battery cell, comprising:
The shell is provided with a containing cavity, an exhaust port and a positioning part, the exhaust port is communicated with the containing cavity, the positioning part surrounds the periphery of the exhaust port, and the positioning part protrudes out of one side of the shell away from the containing cavity;
A pole mounted to the housing;
The bare cell is positioned in the accommodating cavity, and a tab of the bare cell is electrically connected with the pole;
The explosion-proof valve is arranged on the shell and is positioned in the space surrounded by the positioning part so as to seal the exhaust port.
2. The battery cell according to claim 1, wherein the positioning portion is arranged to extend continuously in a circumferential direction of the exhaust port.
3. The battery cell according to claim 1 or 2, wherein the positioning portion is arranged at a spacing from the exhaust port.
4. The battery cell according to claim 3, wherein a surface of the positioning portion on a side facing the explosion-proof valve is a restraining surface that is disposed at an equal interval from an inner wall surface of the exhaust port.
5. The battery cell according to claim 4, wherein a distance between the restriction surface and an inner wall surface of the exhaust port is a target distance, an area of a projection area formed by the explosion-proof valve projected in an axial direction of the exhaust port is a target area, and when the target area is greater than 630mm 2, the target distance is greater than 3.5mm, and the target distance is less than or equal to 4.5mm.
6. The battery cell according to claim 4, wherein a distance between the restriction surface and an inner wall surface of the exhaust port is a target distance, an area of a projection area formed by the explosion-proof valve projected in an axial direction of the exhaust port is a target area, and when the target area is less than or equal to 630mm 2, the target distance is greater than or equal to 3mm, and the target distance is less than or equal to 3.5mm.
7. The battery cell of claim 3, wherein the housing comprises:
A housing;
The end cover is installed in the casing, the end cover with the casing encloses to be established to hold the chamber, the quantity of end cover is at least one, at least one the end cover is formed with the location portion, at least one install on the end cover the utmost point post, the end cover deviates from hold one side of chamber and have first surface and second surface, first surface encircles the location portion deviates from one side of explosion-proof valve, the second surface is located the space that the location encloses is established, the second surface is located along the axial of gas vent the first surface deviates from hold chamber one side, the end cover is towards the surface of holding one side of chamber is located a plane.
8. The battery cell of claim 7, further comprising an insulator connected to a side of the end cap facing away from the corresponding locating portion, the insulator being positioned within the receiving cavity.
9. The battery cell of claim 1 or 2, further comprising a guard covering a side of the explosion-proof valve facing away from the receiving chamber.
10. A battery pack, comprising:
the battery cell according to any one of claims 1 to 9;
the battery monomer is arranged in the box body.
11. An electrical device, comprising:
The battery pack according to claim 10;
the battery pack is arranged on the power utilization device body and provides power for the power utilization device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420490445.1U CN221057618U (en) | 2024-03-14 | 2024-03-14 | Battery monomer, battery package and power consumption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420490445.1U CN221057618U (en) | 2024-03-14 | 2024-03-14 | Battery monomer, battery package and power consumption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221057618U true CN221057618U (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420490445.1U Active CN221057618U (en) | 2024-03-14 | 2024-03-14 | Battery monomer, battery package and power consumption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221057618U (en) |
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2024
- 2024-03-14 CN CN202420490445.1U patent/CN221057618U/en active Active
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