CN205406677U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN205406677U CN205406677U CN201620164978.6U CN201620164978U CN205406677U CN 205406677 U CN205406677 U CN 205406677U CN 201620164978 U CN201620164978 U CN 201620164978U CN 205406677 U CN205406677 U CN 205406677U
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- battery core
- insulating barrier
- lithium ion
- naked battery
- heater
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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 relates to a lithium ion battery, including naked electric core, naked electric core parcel layer and diaphragm heater, naked electric core reaches the diaphragm heater all wraps up naked electric core parcel in situ, the diaphragm heater includes first insulation layer, second insulating layer and zone of heating, the zone of heating sets up the first insulation layer with between the second insulating layer. The lithium ion battery that this application provided, with the integration of diaphragm heater to the battery inside, directly heat it with the contact of naked electric core, adopt this kind of mode to heat naked electric core, reduced the thermal losses, the effectual heating efficiency who promotes the battery has prolonged the life of battery.
Description
Technical field
The application relates to a kind of cell art, particularly relates to a kind of lithium ion battery being integrated with heating function.
Background technology
When lithium ion battery is within the scope of 20-40 DEG C, its charge-discharge performance is best, and service life is the longest.And when battery is in low temperature environment, then the heating function requiring over heat management system makes battery temperature return within the scope of optimum working temperature.Existing heat management system generally adopts ptc heater that outside liquid is heated, the battery that then liquid communication will deliver heat in battery bag to battery bag.Liquid is when along flow path, and heat there will be loss, thus causing that the efficiency of heating surface is low, and then have impact on the service life of battery.
Utility model content
This application provides a kind of lithium ion battery, the problem that the efficiency of heating surface that its heat management system efficiently solving existing lithium ion battery exists is low.
This application provides a kind of lithium ion battery, including naked battery core, naked battery core integument and diaphragm heater, described naked battery core and described diaphragm heater are all wrapped in described naked battery core integument, described diaphragm heater includes the first insulating barrier, the second insulating barrier and zone of heating, and described zone of heating is arranged between described first insulating barrier and described second insulating barrier.
Further, also including naked battery core insulating barrier, described naked battery core integument includes housing, and described naked battery core insulating barrier is arranged in described housing, and described housing is metal duricrust.
Further, described diaphragm heater is arranged on the lateral surface of described naked battery core insulating barrier, and fits with the principal plane of described housing；
Or
Described diaphragm heater is arranged on the medial surface of described naked battery core insulating barrier, and fits with the principal plane of described naked battery core；
Or
Described first insulating barrier of described diaphragm heater and described second insulating barrier are all wholely set with described naked battery core insulating barrier.
Further, described naked battery core integument is aluminum plastic film, and described diaphragm heater is arranged between described aluminum plastic film and described naked battery core；
Or
Described first insulating barrier of described diaphragm heater and described second insulating barrier are all wholely set with described aluminum plastic film.
Further, described naked battery core includes the naked battery core of multiple monomer, and described diaphragm heater is coated on the outer surface of each naked battery core of described monomer or is arranged between the adjacent naked battery core of described monomer.
Further, described zone of heating includes heating element heater, and described heating element heater is thread, strip, lamellar or powdery.
Further, described zone of heating includes multiple thermal treatment zone with different heating power, it is preferred that the heating resistor of each described thermal treatment zone is different.
Further, described zone of heating includes heating element heater, and described heating element heater includes metal, quasiconductor or conducing composite material.
Further, the resistance of described diaphragm heater is 1-15 Ω.
Further, also include top cover, electrical connection interface, sealing structure and wire, described sealing structure is arranged on described top cover, described sealing structure arranges wire hole, described electrical connection interface is connected with the described wire through described wire hole, described wire is connected with described diaphragm heater, adopts encapsulating mode to seal between described wire and described sealing structure.
The technical scheme that the application provides can reach following beneficial effect:
Lithium ion battery provided herein, is integrated into inside battery by diaphragm heater, directly contacts with naked battery core and it is heated, adopt and in this way naked battery core is heated, reduce thermal losses, effectively improve the efficiency of heating surface of battery, extend the service life of battery.
It should be appreciated that above general description and details hereinafter describe and be merely illustrative of, the application can not be limited.
Accompanying drawing explanation
The axonometric chart of the lithium ion battery with hard shell that Fig. 1 provides for the embodiment of the present application；
The structural representation of the soft bag lithium ionic cell that Fig. 2 provides for the embodiment of the present application；
The structural representation one of the diaphragm heater that Fig. 3 provides for the embodiment of the present application；
The structural representation two of the diaphragm heater that Fig. 4 provides for the embodiment of the present application.
1, top cover；2, electrical connection interface；3, structure is sealed；4, wire；5, diaphragm heater；51, the first insulating barrier；52, the second insulating barrier；53, zone of heating；6, naked battery core insulating barrier；7, housing；8, naked battery core.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet embodiments herein, and for explaining the principle of the application together with description.
Detailed description of the invention
Below by specific embodiment and in conjunction with accompanying drawing, the application is described in further detail."front", "rear" in literary composition, "left", "right", " on ", D score is all with the laying state of the lithium ion battery in accompanying drawing for reference.
As in Figure 2-4, the embodiment of the present application provides a kind of lithium ion battery, including naked battery core 8, naked battery core integument and diaphragm heater 5, naked battery core 8 and diaphragm heater 5 are all wrapped in naked battery core integument, diaphragm heater 5 includes the first insulating barrier the 51, second insulating barrier 52 and zone of heating 53, and zone of heating 53 is arranged between the first insulating barrier 51 and the second insulating barrier 52.Wherein, the thickness of the first insulating barrier 51 and the second insulating barrier 52 is 0.08mm-0.15mm.The heat management system of existing lithium ion battery generally adopts ptc heater that outside liquid is heated, the battery that then liquid communication will deliver heat in battery bag to battery bag.Liquid is when along flow path, and owing to flow path is long, the related components related to is more, reduces the space availability ratio of lithium ion battery, and heat there will be loss in flow process, causes that the efficiency of heating surface reduces, and affects the service life of battery.
Lithium ion battery also includes naked battery core insulating barrier 6, naked battery core integument includes housing 7, naked battery core insulating barrier 6 is arranged in housing 7, housing 7 is metal duricrust, being specially Stainless Steel Shell or aluminum hull, for duricrust battery, diaphragm heater 5 can be arranged on medial surface or the lateral surface of naked battery core insulating barrier 6, namely it is arranged between housing 7 and naked battery core insulating barrier 6 or is arranged between naked battery core insulating barrier 6 and naked battery core 8, and fit with naked battery core 8 principal plane or housing 7 principal plane respectively；Diaphragm heater 5 can also replace naked battery core insulating barrier 6, first insulating barrier 51 of diaphragm heater 5 and the second insulating barrier 52 are all wholely set with naked battery core insulating barrier 6, now, naked battery core 8 both can be coated with by naked battery core insulating barrier 6 completely, it is also possible to only cladding is fitted on the both sides principal plane of naked battery core 8；This is itself to possess the first insulating barrier 51 due to diaphragm heater 5 and the second insulating barrier 52 has also been provided simultaneously with the insulating properties that naked battery core insulating barrier 6 possesses, and therefore improves the space availability ratio of lithium ion battery, improves the heats of lithium ion battery.The heating element heater of the zone of heating 53 of above-mentioned diaphragm heater 5 can be thread, lamellar, strip or Powdered, when it is Powdered, can be coated onto on the first insulating barrier 51 or the second insulating barrier 52 to realize its heating function.As shown in Figure 4, for soft-package battery, naked battery core integument in the application is aluminum plastic film, diaphragm heater 5 is arranged between aluminum plastic film and naked battery core 8, when the first insulating barrier 51 and the second insulating barrier 52 are all wholely set with aluminum plastic film, diaphragm heater 5 can also replace aluminum plastic film, thus promoting the space availability ratio of lithium ion battery, the first insulating barrier 51 of diaphragm heater 5 and the second insulating barrier 52 that use as aluminum plastic film are resin insulating barrier.
The naked battery core 8 of the application includes the naked battery core of multiple monomer, and diaphragm heater 5 is coated on the outer surface of the naked battery core of each monomer or is arranged between the naked battery core of adjacent monomer.Needed for practical situation, the heating element heater of zone of heating 53 can be copper, rustless steel, PTC thermistor or nickel alloy.And according to the heat generation characteristic of different zones of heating 53 and radiating condition, zone of heating 53 can also be designed as and include multiple thermal treatment zone with different heating power, zone of heating 53 includes heating element heater, the problem that structure is single is there is relative to existing heating element heater, the heating element heater of the application can be tinsel, conductive powder or conducing composite material, the distributed quantity of the heating element heater in the cross-sectional area of each thermal treatment zone or each thermal treatment zone there are differences, so that the heating power of each thermal treatment zone is different, namely the heating resistor of each described thermal treatment zone is different.When zone of heating is strip or lamellar, sectional area refers to thickness, and when zone of heating is thread, sectional area refers to radius.The material of conductive powder can be metal or quasiconductor, it is preferred that material is graphite or silver slurry.The resistance of semi-conducting material varies with temperature different, and under such as low temperature, resistance is only small, raises with temperature, and resistance becomes big, and this change just meets the situation that heating uses, and low temperature needs big heating power, and high temperature needs little heating power.Unit are heat production power is too big, it is easy to cause zone of heating 53 surface the first insulating barrier 51 or the second insulating barrier 52 ageing failure；It is too little that resistance is easily caused again zone of heating heat production power too greatly, does not reach the requirement of battery core heating rate.Therefore, the resistance of the diaphragm heater 5 in the application is generally 1-15 Ω, it is preferred that resistance is 10 Ω.Compared to other thermals treatment zone, the thermal treatment zone power being connected with wire 4 is relatively low, and general rated thermal power controls at 0.05W/cm2Hereinafter, the rated thermal power of the main product hot-zone of diaphragm heater 5 is typically in 0.3W/cm2To 2W/cm2Between.
In addition, as shown in Figure 1, the lithium ion battery of the application also includes top cover 1, electrical connection interface 2, seals structure 3 and wire 4, seal structure 3 and be arranged on top cover 1, seal and structure 3 arranges wire hole, electrical connection interface 2 is connected with the wire 4 through wire hole, and wire 4 is connected with diaphragm heater 5, and wire 4 and the employing encapsulating mode between structure 3 that seals seal.Adopt the dual-seal measure sealing structure 3 and encapsulating mode to make the gap between electrical connection interface 2 and top cover 1 obtain sufficient sealing, improve the security performance of lithium ion battery.
For the ease of assembling, it is possible to sealing structure 3 and top cover 1 are designed as integrated formed structure, it is also possible to utilize welding manner sealing structure 3 and top cover 1 to be welded together, in order to change the sealing structure 3 that sealing effectiveness is not good.The sealing simple in construction of the application, and sealing and mechanical strength are all better, its endurance ability can reach 1Mpa air pressure.
Sealing structure 3 in the application is the column structure with upper shed and under shed, the diameter of upper shed is more than the diameter of under shed, this structural design is the operation in order to facilitate sealant pouring and sealing, make sealant pouring and sealing more abundant, and then reach the sealing effectiveness of the best, in addition, this structural design also helps the molding of the fluid sealant of encapsulating process perfusion, and can increase fluid sealant with seal structure 3 coordinate area, to increase the frictional force at interface, and then improving the ability bearing battery core enclosure interior air pressure, the air pressure that can bear reaches more than 0.7Mpa.
The lithium ion battery that the present embodiment provides, adopt diaphragm heater 5 that naked battery core 8 is heated, and diaphragm heater 5 is integrated into inside battery, itself and inside battery structural member is made to become one structure, reduce thermal losses, effectively improve the efficiency of heating surface of battery, extend the service life of battery.
These are only the preferred embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations.All within spirit herein and principle, any amendment of making, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a lithium ion battery, it is characterized in that, including naked battery core, naked battery core integument and diaphragm heater, described naked battery core and described diaphragm heater are all wrapped in described naked battery core integument, described diaphragm heater includes the first insulating barrier, the second insulating barrier and zone of heating, and described zone of heating is arranged between described first insulating barrier and described second insulating barrier.
2. lithium ion battery according to claim 1, it is characterised in that also include naked battery core insulating barrier, described naked battery core integument includes housing, and described naked battery core insulating barrier is arranged in described housing, and described housing is metal duricrust.
3. lithium ion battery according to claim 2, it is characterised in that described diaphragm heater is arranged on the lateral surface of described naked battery core insulating barrier, and fit with the principal plane of described housing；
Or
Described diaphragm heater is arranged on the medial surface of described naked battery core insulating barrier, and fits with the principal plane of described naked battery core；
Or
Described first insulating barrier of described diaphragm heater and described second insulating barrier are all wholely set with described naked battery core insulating barrier.
4. lithium ion battery according to claim 1, it is characterised in that described naked battery core integument is aluminum plastic film, and described diaphragm heater is arranged between described aluminum plastic film and described naked battery core；
Or
Described first insulating barrier of described diaphragm heater and described second insulating barrier are all wholely set with described aluminum plastic film.
5. the lithium ion battery according to any one in claim 1-4, it is characterized in that, described naked battery core includes the naked battery core of multiple monomer, and described diaphragm heater is coated on the outer surface of each naked battery core of described monomer or is arranged between the adjacent naked battery core of described monomer.
6. the lithium ion battery according to any one in claim 1-4, it is characterised in that described zone of heating includes heating element heater, described heating element heater is thread, strip, lamellar or powdery.
7. the lithium ion battery according to any one in claim 1-4, it is characterised in that described zone of heating includes multiple thermal treatment zone with different heating power, it is preferred that the heating resistor of each described thermal treatment zone is different.
8. the lithium ion battery according to any one in claim 1-4, it is characterised in that described zone of heating includes heating element heater, and described heating element heater includes metal, quasiconductor or conducing composite material.
9. the lithium ion battery according to any one in claim 1-4, it is characterised in that the resistance of described diaphragm heater is 1-15 Ω.
10. the lithium ion battery according to any one in claim 1-4, it is characterized in that, also include top cover, electrical connection interface, sealing structure and wire, described sealing structure is arranged on described top cover, described sealing structure arranges wire hole, described electrical connection interface is connected with the described wire through described wire hole, and described wire is connected with described diaphragm heater, adopts encapsulating mode to seal between described wire and described sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164978.6U CN205406677U (en) | 2016-03-04 | 2016-03-04 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164978.6U CN205406677U (en) | 2016-03-04 | 2016-03-04 | Lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN205406677U true CN205406677U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620164978.6U Active CN205406677U (en) | 2016-03-04 | 2016-03-04 | Lithium ion battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633507A (en) * | 2016-03-04 | 2016-06-01 | 宁德时代新能源科技股份有限公司 | Lithium ion battery |
| CN108075210A (en) * | 2017-11-22 | 2018-05-25 | 湖南立方新能源科技有限责任公司 | A kind of self-heating battery and its self-heating method |
| CN112234259A (en) * | 2020-01-06 | 2021-01-15 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and lithium ion battery |
| WO2023092896A1 (en) * | 2021-11-29 | 2023-06-01 | 宁德时代新能源科技股份有限公司 | Thermal runaway triggering method |
-
2016
- 2016-03-04 CN CN201620164978.6U patent/CN205406677U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633507A (en) * | 2016-03-04 | 2016-06-01 | 宁德时代新能源科技股份有限公司 | Lithium ion battery |
| CN108075210A (en) * | 2017-11-22 | 2018-05-25 | 湖南立方新能源科技有限责任公司 | A kind of self-heating battery and its self-heating method |
| CN112234259A (en) * | 2020-01-06 | 2021-01-15 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and lithium ion battery |
| WO2023092896A1 (en) * | 2021-11-29 | 2023-06-01 | 宁德时代新能源科技股份有限公司 | Thermal runaway triggering method |
| EP4215907A4 (en) * | 2021-11-29 | 2024-04-03 | Contemporary Amperex Technology Co., Limited | Thermal runaway triggering method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |