CN210224229U - Soft package lithium ion battery with heating function - Google Patents
Soft package lithium ion battery with heating function Download PDFInfo
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- CN210224229U CN210224229U CN201920926294.9U CN201920926294U CN210224229U CN 210224229 U CN210224229 U CN 210224229U CN 201920926294 U CN201920926294 U CN 201920926294U CN 210224229 U CN210224229 U CN 210224229U
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- lithium ion
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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 discloses a soft package lithium ion battery with heating function, including packing plastic film and soft package lithium ion battery, the packing plastic film cladding is at soft package lithium ion battery's surface, it includes outside macromolecular material layer, first binder layer, heating film layer, second binder layer, metallic material layer, third binder layer and inside macromolecular material layer from outside to inside in proper order, the heating film layer includes heating film layer positive terminal and heating film layer negative terminal, soft package lithium ion battery includes positive, negative terminal, connects heating film layer positive terminal and heating film layer negative terminal respectively; the utility model discloses apply the lithium ion battery flexible package plastic film that has the heating function to soft package lithium ion battery, effectively solve soft package lithium ion battery easily under the low temperature environment and analyse lithium, capacity reduction, cycle life weak point etc. drawback, effectively promoted soft package lithium ion battery's low temperature performance; furthermore, the battery manufacturing process of the utility model is convenient to implement and easy to produce and process.
Description
Technical Field
The utility model belongs to the chemical power source field specifically indicates a soft packet of lithium ion battery with heating function.
Background
The soft package lithium ion battery is also called a soft package battery core and is widely applied. The inner electrode plate structure comprises a laminated type and a winding type, and the outer part of the electrode plate structure uses a soft composite aluminum-plastic film as a packaging material. The common soft package lithium ion battery does not have a heating function, so that the application of the soft package lithium ion battery in a low-temperature environment is influenced.
Some people have studied soft package lithium ion batteries, for example, patent 201611109111.1 discloses a soft package battery cell and a manufacturing process thereof, wherein the battery cell comprises a positive plate, a negative plate, a diaphragm and a soft package shell, and electrolyte is filled in the soft package shell; patent 201710050840.2 discloses a laminated soft package battery, which includes a positive plate, a negative plate, a diaphragm, an electrolyte and an external packaging structure, wherein the external packaging structure packages the positive plate, the negative plate, the diaphragm and the electrolyte therebetween; patent 201810064055.7 discloses a method for manufacturing a button-type and soft-package full battery, which includes the steps of preparing positive pole piece slurry, preparing negative pole piece slurry, manufacturing positive and negative pole pieces, manufacturing a button-type full battery, manufacturing a soft-package battery, and the like. It can be seen from the published method that the current soft package lithium ion battery is only changed according to the used materials, has no heating function, and does not use a soft package plastic film with a heating film.
Some people also have studied the heating of lithium ion batteries, for example, patent 201610472033.5 discloses a thermal balance management system of a lithium ion battery module, which comprises a heat conduction structural member, a deformed heat conduction pad, a heating film, a heat sink, a balance and temperature control circuit board and a battery management system circuit board, wherein the heating film is arranged on one of two wider surfaces of a rectangular battery module; patent 201611071651.5 discloses a lithium ion battery module of area heating module, and it includes lithium battery module and heating module, and the electric heating cloth parcel that heats the module is on the outer wall of lithium battery cell group. As can be seen from the disclosed method, the current heating scheme mainly aims at wrapping a heating device outside the battery pack after the batteries are grouped, and the battery cells do not have a heating function.
Based on the defects of the prior art, a soft package lithium ion battery with a heating function needs to be researched.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a soft packet of lithium ion battery with heating function.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a soft package lithium ion battery with a heating function comprises a package plastic film and a soft package lithium ion battery, wherein the package plastic film is coated on the outer surface of the soft package lithium ion battery, the thickness of the package plastic film is 30-200 mu m, the package plastic film sequentially comprises an external polymer material layer, a first binder layer, a heating film layer, a second binder layer, a metal material layer, a third binder layer and an internal polymer material layer from outside to inside, the heating film layer comprises a heating film layer positive terminal and a heating film layer negative terminal, and the heating film layer positive terminal and the heating film layer negative terminal penetrate through the first binder layer and the polymer material layer and extend out of the package plastic film; the soft package lithium ion battery comprises a positive terminal and a negative terminal which are respectively connected with the positive terminal of the heating film layer and the negative terminal of the heating film layer.
Furthermore, the heating mode of the heating film layer is electric heating.
Further, the inside temperature sensing device that is provided with of soft packet of lithium ion battery to its temperature value of setting for the stop heating, when heating function during operation, when the inside temperature of battery reached the stop heating temperature value, the heating function was closed, temperature sensing device's the stop heating temperature value scope is 0~25 ℃.
Furthermore, the soft package lithium ion battery comprises a plurality of layers of pole piece groups which are overlapped, and the temperature sensing device is externally provided with a temperature sensing device outgoing line.
Has the advantages that: compared with the prior art, the utility model has the advantages of it is following: the utility model discloses apply the lithium ion battery flexible package plastic film that has the heating function to soft package lithium ion battery, effectively solve soft package lithium ion battery easily under the low temperature environment and analyse lithium, capacity reduction, cycle life weak point etc. drawback, effectively promoted soft package lithium ion battery's low temperature performance; furthermore, the battery manufacturing process of the utility model is convenient to implement and easy to produce and process.
Drawings
FIG. 1 is a schematic cross-sectional view of a plastic packaging film according to the present invention;
FIG. 2 is a schematic perspective view of the plastic packaging film of the present invention;
fig. 3 is a cross-sectional view of the soft-package lithium ion battery of the present invention;
fig. 4 is a perspective view of the soft package lithium ion battery of the present invention;
FIG. 5 is a view showing an installation state of the present invention;
the electrode comprises an outer high polymer material layer 1, an outer high polymer material layer 2, a first binder layer 3, a heating film layer 4, a second binder layer 5, a metal material layer 6, a third binder layer 7, an inner high polymer material layer 8, a heating film layer positive electrode terminal 9, a heating film layer negative electrode terminal 10, a pole piece group 11, a temperature sensing device 12 and a temperature sensing device lead-out wire.
Detailed Description
The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.
The soft package lithium ion battery with the heating function comprises a packaging plastic film and a soft package lithium ion battery, wherein the packaging plastic film is coated on the outer surface of the soft package lithium ion battery, the thickness of the packaging plastic film is 30-200 mu m, the flexible package lithium ion battery comprises an external polymer material layer 1, a first binder layer 2, a heating film layer 3, a second binder layer 4, a metal material layer 5, a third binder layer 6 and an internal polymer material layer 7 in sequence from outside to inside, wherein the heating film layer comprises a heating film layer positive terminal 8 and a heating film layer negative terminal 9, the heating film layer positive terminal 8 and the heating film layer negative terminal 9 penetrate through the first binder layer 2 and the polymer material layer 1 and extend out of a package plastic film, the defects that the flexible package lithium ion battery is easy to precipitate lithium in a low-temperature environment, the capacity is reduced, the cycle life is short and the like are effectively overcome, and the low-temperature performance of the flexible package lithium ion battery is effectively improved; the soft package lithium ion battery comprises a positive terminal and a negative terminal which are respectively connected with a heating film layer positive terminal 8 and a heating film layer negative terminal 9; the heating mode of the heating film layer 3 is electric heating; the soft package lithium ion battery internally comprises a temperature sensing device 11, and a heating stop temperature value is set for the temperature sensing device. When the heating function works, when the internal temperature of the battery reaches a heating stopping temperature value, the heating function is closed, and the heating stopping temperature value of the temperature sensing device 11 is in a range of 0-25 ℃; soft package lithium ion battery inside includes a plurality of layers of pole piece crowd 10 that fold mutually, and temperature-sensing device 11 peripheral hardware temperature-sensing device lead-out wires 12, the utility model discloses a battery manufacturing process is convenient for implement, easily production and processing.
The utility model discloses there are several kinds of embodiments as follows to make:
embodiment one
Firstly, preparing a laminated plate group consisting of a plurality of positive and negative plates and diaphragms according to the capacity and size requirements of the battery;
secondly, preparing a flexible packaging plastic film with an embedded heating function and a thickness of 30 microns according to the capacity and size requirements of the battery, wherein a heating film layer area of the flexible packaging plastic film is positioned in a pole piece group packaging area;
thirdly, preparing a temperature sensing device, and setting the induction temperature of the temperature sensing device for stopping heating to be 0 ℃;
fourthly, encapsulating the pole piece group and the temperature sensing device in the encapsulation area of the flexible packaging plastic film to form a semi-finished battery;
fifthly, the semi-finished product battery is subjected to the steps of electrolyte injection, formation, aging, capacity grading, post-treatment and the like, so that the soft package lithium ion battery with certain voltage and capacity and a heating function is obtained.
Embodiment two
Firstly, preparing a winding type pole piece group consisting of a plurality of positive and negative pole pieces and diaphragms according to the capacity and size requirements of the battery;
secondly, preparing a flexible packaging plastic film with an embedded heating function and a thickness of 200 mu m according to the capacity and size requirements of the battery, wherein a heating film layer area of the flexible packaging plastic film is positioned in a pole piece group packaging area;
thirdly, preparing a temperature sensing device, and setting the induction temperature of the temperature sensing device at 25 ℃ when the temperature sensing device stops heating;
fourthly, encapsulating the pole piece group and the temperature sensing device in the encapsulation area of the flexible packaging plastic film to form a semi-finished battery;
fifthly, the semi-finished product battery is subjected to the steps of electrolyte injection, formation, aging, capacity grading, post-treatment and the like, so that the soft package lithium ion battery with certain voltage and capacity and a heating function is obtained.
Embodiment three
Firstly, preparing a laminated plate group consisting of a plurality of positive and negative plates and diaphragms according to the capacity and size requirements of the battery;
secondly, preparing a flexible packaging plastic film with an embedded heating function and a thickness of 50 microns according to the capacity and size requirements of the battery, wherein a heating film layer area of the flexible packaging plastic film is positioned in a pole piece group packaging area;
thirdly, preparing a temperature sensing device, and setting the induction temperature of the temperature sensing device to be 5 ℃ when the temperature sensing device stops heating;
fourthly, encapsulating the pole piece group and the temperature sensing device in the encapsulation area of the flexible packaging plastic film to form a semi-finished battery;
fifthly, the semi-finished product battery is subjected to the steps of electrolyte injection, formation, aging, capacity grading, post-treatment and the like, so that the soft package lithium ion battery with certain voltage and capacity and a heating function is obtained.
Embodiment four
Firstly, preparing a winding type pole piece group consisting of a plurality of positive and negative pole pieces and diaphragms according to the capacity and size requirements of the battery;
secondly, preparing a flexible packaging plastic film with the embedded heating function and the thickness of 100 mu m according to the capacity and the size requirement of the battery, wherein a heating film layer area of the flexible packaging plastic film is positioned in a pole piece group packaging area;
thirdly, preparing a temperature sensing device, and setting the induction temperature of the temperature sensing device to 15 ℃ when the temperature sensing device stops heating;
fourthly, encapsulating the pole piece group and the temperature sensing device in the encapsulation area of the flexible packaging plastic film to form a semi-finished battery;
fifthly, the semi-finished product battery is subjected to the steps of electrolyte injection, formation, aging, capacity grading, post-treatment and the like, so that the soft package lithium ion battery with certain voltage and capacity and a heating function is obtained.
The use method comprises the following steps:
the positive and negative electrodes in the prepared soft package lithium ion battery with the heating function, the positive and negative terminals of the heating film on the shell and the outgoing line of the temperature sensing device are respectively connected to an electric control component, the electric control component controls the charging and discharging and heating of the lithium ion battery and stops heating according to the heating stopping temperature and the actual temperature value set by the temperature sensing device, and meanwhile, the electric control component can also be connected with a load and a power supply to supply power and take power.
The implementation effect is as follows:
TABLE 1 internal temperature of the working and control samples at different ambient temperatures
TABLE 2 Low temperature Capacity (%)% of working and control samples at different ambient temperatures
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a soft packet of lithium ion battery with heating function which characterized in that: the packaging plastic film comprises a packaging plastic film and a soft package lithium ion battery, wherein the packaging plastic film is coated on the outer surface of the soft package lithium ion battery, the thickness of the packaging plastic film is 30-200 mu m, the packaging plastic film sequentially comprises an external high polymer material layer (1), a first binder layer (2), a heating film layer (3), a second binder layer (4), a metal material layer (5), a third binder layer (6) and an internal high polymer material layer (7) from outside to inside, the heating film layer (3) is provided with a heating film layer positive terminal (8) and a heating film layer negative terminal (9), and the heating film layer positive terminal (8) and the heating film layer negative terminal (9) penetrate through the first binder layer (2) and the high polymer material layer (1) and extend out of the packaging plastic film; the soft package lithium ion battery comprises a positive terminal and a negative terminal which are respectively connected with the heating film layer positive terminal (8) and the heating film layer negative terminal (9).
2. The soft package lithium ion battery with the heating function according to claim 1, wherein: the heating mode of the heating film layer (3) is electric heating.
3. The soft package lithium ion battery with the heating function according to claim 1, wherein: the soft package lithium ion battery is inside to be provided with temperature sensing device (11), sets for the temperature value of stop heating to it, and when heating function during operation, when the battery internal temperature reached the stop heating temperature value, the heating function was closed, the temperature value scope of the stop heating of temperature sensing device (11) is 0~25 ℃.
4. The soft package lithium ion battery with the heating function according to claim 3, wherein: the soft package lithium ion battery is characterized in that a plurality of layers of pole piece groups (10) which are overlapped are arranged inside the soft package lithium ion battery, and a temperature sensing device outgoing line (12) is arranged outside the temperature sensing device (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920926294.9U CN210224229U (en) | 2019-06-19 | 2019-06-19 | Soft package lithium ion battery with heating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920926294.9U CN210224229U (en) | 2019-06-19 | 2019-06-19 | Soft package lithium ion battery with heating function |
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| Publication Number | Publication Date |
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| CN210224229U true CN210224229U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920926294.9U Active CN210224229U (en) | 2019-06-19 | 2019-06-19 | Soft package lithium ion battery with heating function |
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| CN (1) | CN210224229U (en) |
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- 2019-06-19 CN CN201920926294.9U patent/CN210224229U/en active Active
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