CN211042083U - Lithium ion battery pack - Google Patents
Lithium ion battery pack Download PDFInfo
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- CN211042083U CN211042083U CN201922348578.7U CN201922348578U CN211042083U CN 211042083 U CN211042083 U CN 211042083U CN 201922348578 U CN201922348578 U CN 201922348578U CN 211042083 U CN211042083 U CN 211042083U
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- battery
- management system
- lithium ion
- battery management
- ion battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of lithium ion battery, especially, relate to a lithium ion battery package, including battery management system and a plurality of with the battery monomer that the battery management system electricity is connected, every the surface on its utmost point ear of battery monomer department encapsulation limit all is fixed with force-sensitive resistance, be provided with information acquisition module on the battery management system, force-sensitive resistance with information acquisition moduleThe blocks are electrically connected. When the battery management system is used, a resistor safety threshold value R is preset in the battery management system, and the information acquisition module acquires the resistance value R on each force-sensitive resistornAnd transmitting the information to a battery management system; when R isnAnd when the R is larger than or equal to the R, the battery management system stops the charging and discharging of the lithium ion battery pack. Compared with the prior art, the utility model discloses can detect the battery physiosis condition more accurately, discover suddenly worsening of electric core early, get rid of the potential safety hazard.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, especially, relate to a lithium ion battery package.
Background
Lithium ion batteries have attracted extensive attention because of their advantages of high safety, long cycle life, environmental friendliness, and relatively low price, and have been widely used in the fields of mobile phones, electric vehicles, and other electric devices.
In practical use of lithium ion batteries, the batteries often swell and deform due to the types of electrode materials, unstable film formation, moisture control and the like. In the soft package battery, the battery flatulence can cause the unsafe of the battery, and the safety accident of the battery is easily caused. At present, in the production of lithium ion batteries, before battery cells are assembled into a battery module, the deformation amount of the battery cells is usually checked, and a certain deformation allowance is reserved when the battery cells are assembled into the battery module. However, in the use process of the lithium ion battery, the flatulence deformation of the lithium ion battery can be gradually changed in an accumulated mode, and when the battery monomers have differences, the flatulence amount has large differences, and once the flatulence deformation amount of the battery monomers exceeds a preset value, the battery package can be only broken, so that the dangers of liquid leakage, corrosion and the like are caused. Therefore, patent CN209150260U discloses a lithium ion battery inflation deformation detection alarm device, which is to set a force sensitive resistor between two adjacent batteries, and when collecting the resistance value of each force sensitive resistor, determine whether it is within the preset safety threshold range, so as to be used as the basis for cutting off the discharge loop of the circuit module. Although the device can warn the battery of the flatulence to a certain degree, the force sensitive resistor is positioned between the intervals of the two batteries, so that the device cannot be accurate to the battery which is flatulence, and the flatulence battery cannot be accurately replaced or maintained.
In view of this, it is necessary to provide a battery pack with an inflated deformation detection and early warning function, so as to detect the inflated battery more timely and accurately and better eliminate the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the defects of the prior art, the lithium ion battery pack is provided, when the battery monomer in the lithium ion battery pack generates gas, the potential safety hazard can be found more accurately and early, and the loss is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a lithium ion battery package, including battery management system and a plurality of with the battery monomer that the battery management system electricity is connected, every the battery monomer all is fixed with the force sensing resistance at the surface of its utmost point ear encapsulation limit, be provided with information acquisition module on the battery management system, the force sensing resistance with the information acquisition module electricity is connected.
As an improvement of the lithium ion battery pack, the force sensitive resistor is fixed on the outer surface of the packaging edge where the electrode lug of the battery cell is located through the fixing piece. The gas generated in the battery monomer in the battery pack can be concentrated on the packaging edge where the lug is located, so that the pressure of the packaging edge is increased, and therefore the force-sensitive resistor is arranged on the packaging edge where the lug is located, and the resistance value change of the force-sensitive resistor can be seen more directly.
As a lithium ion battery package's an improvement, free two poles of the earth ear of battery set up in free same one end of battery, the mounting is fixed in two between the utmost point ear.
As a lithium ion battery package's an improvement, two free utmost point ears of battery set up in the relative both ends of battery monomer, the mounting is fixed in at least one arbitrary side of utmost point ear. That is, the battery cell has two package edges, and the fixing member is disposed on at least one of the package edges.
As a lithium ion battery package's an improvement, the mounting is provided with and holds the chamber, force sensing resistor hold in hold the intracavity and laminate in the surface on encapsulation limit that utmost point ear was located.
As an improvement of the lithium ion battery pack of the present invention, the two leads of the force sensitive resistor are led out from the accommodating chamber.
As an improvement of the lithium ion battery pack, the lithium ion battery pack further comprises an alarm device, wherein the alarm device is electrically connected with the battery management system. The alarm means may be in the form of a flashing light and/or an alarm sound, which responds when the resistance exceeds a safety threshold.
As an improvement of lithium ion battery package, still include data display device, data display device with the battery management system electricity is connected. The data display device is mainly used for displaying the detected resistance value, so that data are visualized, and when the resistance value sharply increases, the charging and discharging of the battery pack can be directly stopped.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model discloses fix the force-sensitive resistor to the encapsulation limit that its utmost point ear of battery monomer was located, when battery monomer produced the flatulence, because battery monomer in battery package the inside, the inside gas that produces of battery can concentrate on the encapsulation limit that utmost point ear was located, causes the pressure increase on the encapsulation limit that utmost point ear was located to the resistance of force-sensitive resistor produces the change. The utility model discloses still set up safety threshold in battery management system, when the resistance that detects is greater than this threshold value, the prediction is taking place the flatulence for this battery monomer, and meanwhile, battery management system can stop the charge-discharge of lithium ion battery package. Compare in the interval with the setting of force sensing resistor between two batteries, the utility model discloses can detect out more accurately which battery monomer takes place the flatulence, can in time replace or maintain.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the working principle of each element in the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
Wherein: 1-battery management system, 2-battery monomer, 3-force sensitive resistor, 4-fixing piece, 5-alarm device, 6-data display device, 21-packaging edge and 22-tab.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
Example 1
As shown in fig. 1-2, a lithium ion battery pack includes a battery management system 1 and a plurality of battery cells 2 electrically connected to the battery management system 1, each battery cell 2 has a force-sensitive resistor 3 fixed on an outer surface of a package edge 21 where a tab 22 is located, an information acquisition module is disposed on the battery management system 1, and the force-sensitive resistor 3 is electrically connected to the information acquisition module.
Preferably, the force-sensitive resistor 3 is fixed to the outer surface of the sealing edge 21 of the battery cell 2 where the tab 22 is located by the fixing member 4.
Preferably, the two electrode tabs 22 of the battery unit 2 are disposed at the same end of the battery unit 2, and the fixing member 4 is fixed between the two electrode tabs 22.
Preferably, the two electrode tabs 22 of the battery unit 2 are disposed at the same end of the battery unit 2, and the fixing member 4 is fixed between the two electrode tabs 22.
Preferably, the fixing element 4 is provided with a receiving cavity, and the force-sensitive resistor 3 is received in the receiving cavity and attached to the outer surface of the sealing edge 21 where the tab 22 is located.
Preferably, the two leads of the force-sensitive resistor 3 are led out of the accommodating cavity.
The lithium ion battery pack of the embodiment further comprises an alarm device 5, and the alarm device 5 is electrically connected with the battery management system 1.
The lithium ion battery pack of the present embodiment further includes a data display device 6, and the data display device 6 is electrically connected to the battery management system 1.
The method for detecting and warning the air inflation deformation of the lithium ion battery pack comprises the following steps: s1, presetting a resistance safety threshold R in the battery management system 1, and acquiring the resistance R on each force sensitive resistor 3 by the information acquisition modulenAnd transmits the information to the battery management system 1; s2, comparing RnAnd R is both the size of R whennWhen R is greater than or equal to R, the battery management system 1 stops charging and discharging of the lithium ion battery pack.
Further, in step S1, the battery management system 1 will also collect the resistance value RnTo the data display device 6.
Further, in step S2, the battery management system 1 stops charging and discharging of the lithium ion battery pack, and the alarm device 5 issues an alarm signal.
Example 2
As shown in fig. 3, unlike embodiment 1: two tabs 22 of the battery unit 2 are disposed at opposite ends of the battery unit 2, and the fixing member 4 is fixed to one side of one tab 22. Namely, the battery unit 2 has two package edges 21, and the fixing member 4 is disposed on one package edge 21.
The rest is the same as embodiment 1, and the description is omitted here.
Example 3
As shown in fig. 4, unlike embodiment 1: two tabs 22 of the battery unit 2 are disposed at opposite ends of the battery unit 2, and the fixing member 4 is fixed to one side of the two tabs 22. Namely, the battery cell 2 has two sealing edges 21, and the fixing member 4 is disposed on both the sealing edges 21.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. A lithium ion battery pack, characterized in that: the battery management system comprises a battery management system and a plurality of battery monomers electrically connected with the battery management system, wherein each battery monomer is provided with a force-sensitive resistor on the outer surface of a packaging edge where a tab of the battery monomer is located, the battery management system is provided with an information acquisition module, and the force-sensitive resistors are electrically connected with the information acquisition module.
2. The lithium ion battery pack of claim 1, wherein: the force-sensitive resistor is fixed on the outer surface of the packaging edge of the single battery at which the pole lug is positioned through a fixing piece.
3. The lithium ion battery pack of claim 2, wherein: the two pole ears of the battery monomer are arranged at the same end of the battery monomer, and the fixing piece is fixed between the two pole ears.
4. The lithium ion battery pack of claim 2, wherein: two lugs of the battery monomer are arranged at two opposite ends of the battery monomer, and the fixing piece is fixed on any side of at least one lug.
5. The lithium ion battery pack according to any one of claims 2 to 4, wherein: the fixing piece is provided with an accommodating cavity, and the force-sensitive resistor is accommodated in the accommodating cavity and attached to the outer surface of the packaging edge where the lug is located.
6. The lithium ion battery pack of claim 5, wherein: two leads of the force-sensitive resistor are led out from the accommodating cavity.
7. The lithium ion battery pack of claim 1, wherein: the battery management system further comprises an alarm device, and the alarm device is electrically connected with the battery management system.
8. The lithium ion battery pack of claim 1, wherein: the battery management system further comprises a data display device, and the data display device is electrically connected with the battery management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348578.7U CN211042083U (en) | 2019-12-24 | 2019-12-24 | Lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348578.7U CN211042083U (en) | 2019-12-24 | 2019-12-24 | Lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042083U true CN211042083U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922348578.7U Active CN211042083U (en) | 2019-12-24 | 2019-12-24 | Lithium ion battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211042083U (en) |
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2019
- 2019-12-24 CN CN201922348578.7U patent/CN211042083U/en active Active
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