CN109860841A - A kind of cylindrical lithium ion battery - Google Patents
A kind of cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN109860841A CN109860841A CN201710503651.6A CN201710503651A CN109860841A CN 109860841 A CN109860841 A CN 109860841A CN 201710503651 A CN201710503651 A CN 201710503651A CN 109860841 A CN109860841 A CN 109860841A
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- China
- Prior art keywords
- thermally conductive
- collection body
- heat sink
- heat collection
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 239000003792 electrolyte Substances 0.000 claims abstract description 23
- 239000006183 anode active material Substances 0.000 claims abstract description 7
- 239000011149 active material Substances 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000003447 ipsilateral effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- -1 Lithium transition-metal nitride Chemical class 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
Abstract
Cylindrical lithium ion battery, it includes cylindrical shell, positive cover board, negative cover, Positive Poles, negative pole and battery core, the negative electrode tab includes negative current collector and coated in the anode active material layer on negative current collector, thermally conductive heat collection body is provided on positive plate or/and negative electrode tab, the thermally conductive heat collection body is the positive part of plus plate current-collecting body or/and negative current collector or/and the collector of the local uncoated active material layer of reverse side, thermally conductive heat collection body builds up the heat sink runner of thermally conductive thermal-arrest in the same area up and down at least more than two panels, the thermal energy for constituting battery core passes in and out heat sink runner, heat sink runner overlaps or is connected with the heat pipe that shell and liquid-sucking core are constituted, heat sink runner and heat pipe constitute heat sink runner heat pipe module, heat sink runner protrudes into the electrolyte more than needed in shell, electrolyte heat is heated or cooled in electrolyte to hand over Parallel operation can effectively solve the problems such as battery temperature is too high or too low.
Description
(1) technical field
The present invention relates to a kind of lithium ion battery more particularly to a kind of cylindrical lithium ion batteries.
(2) background technique
Traffic brings dual-pressure to energy crisis and environmental pollution, efficient, cleaning that there is an urgent need to Devoting Major Efforts To Developings and research,
The new-energy automobile of safety realizes energy-saving and emission-reduction.Lithium ion battery is due to high, pollution-free, memory-less effect etc. with specific energy
Advantage becomes the optimal candidate of new-energy automobile dynamical system.But lithium ion battery is very sensitive to temperature, in suitable temperature
Battery pack high-efficiency discharge and could keep good performance in range.High temperature can make lithium ion battery aging speed become faster, is hot
Resistance increase becomes faster, cycle-index tails off, service life shortens, or even the problems such as initiation battery thermal runaway；Low temperature can be electrolysed
The conductivity of liquid reduces, and the ability decline of conductive activity ion, impedance increases, capacity decline.
The prior art or the riding position by changing battery core increase the purpose of heat dissipation to reach improvement fluid course；
Or by the improvement to battery case, such as case material is changed to by aluminium alloy by thermoelectric material and the compound system of aluminum material
It is standby, housing side is added into many places heat dissipation convex edge；Or electrode slice extension is extend into electrolyte, by electrolyte by energy
It is transmitted to battery case, then outside batteries etc. are transferred to by battery case.Make although the prior art can play certain heat dissipation
With, but heat still cannot be exported directly to outside batteries from main heating position pole piece, heat conduction and heat radiation effect is poor.Cause
This, studying a kind of novel cylindrical lithium ion battery has been urgent need.
(3) summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of cylindrical lithium ion battery, it can effectively solve battery temperature
Spend the problems such as too high or too low.
The technical solution of the present invention is as follows: cylindrical lithium ion battery comprising cylindrical shell, positive cover board, negative cover
Plate, Positive Poles, negative pole and battery core, the anode cover board and the negative cover are respectively and fixedly installed to the shell
Both ends, the Positive Poles and the negative pole are respectively arranged in the anode cover board and the negative cover, and the battery core includes
Negative electrode tab, diaphragm and positive plate, described in negative electrode tab, diaphragm and positive plate successively overlap after be wound into it is cylindric；Positive plate
It is connected with anode ear, is connect with Positive Poles；Negative electrode tab is connected with negative electrode lug, connect with negative pole；The anode ear and negative
The ipsilateral or two sides of battery core main body are arranged in tab, and the negative electrode tab includes negative current collector and is coated on negative current collector
Anode active material layer, the positive plate includes plus plate current-collecting body and coated in the positive electrode active materials on plus plate current-collecting body
Layer, it is characterised in that: thermally conductive heat collection body is provided on positive plate or/and negative electrode tab, the thermally conductive heat collection body is plus plate current-collecting body
Or/and negative current collector positive part or/and the local uncoated active material layer of reverse side collector, at least more than two panels lead
Hot heat collection body builds up the heat sink runner of thermally conductive thermal-arrest in the same area up and down, constitutes the thermal energy disengaging heat sink runner of battery core, heat sink
Runner protrudes into the electrolyte more than needed in shell, and electrolyte heat exchanger is heated or cooled in electrolyte.In this way, main hair
Heat on the pole piece of hot spot can quickly focus on thermally conductive heat collection body, then the heat exchange by being arranged on thermally conductive heat collection body
Device quickly exports heat, avoids battery temperature excessively high；Meanwhile thermally conductive heat collection body being overlapped to form heat in upper and lower the same area
Converge road, and heat sink runner is heated or cooled by fluid course component, and internal temperature of battery can be realized and be raised and lowered,
Always it maintains battery in suitable operating temperature, improves battery working efficiency, extend battery life, eliminate safe hidden trouble；It is thermally conductive
Heat collection body can be integrally formed with positive plate, simplify process, improve production efficiency.
Optionally, of the invention to be further characterized in that the thermally conductive heat collection body of at least two panels or more is spaced in the same area up and down and builds up
The heat sink runner of the thermally conductive thermal-arrest of sandwich constitutes the heat sink runner of battery core thermal energy disengaging.
Optionally, of the invention to be further characterized in that the heat sink runner is thermally conductive heat collection body by being welded and fixed to be formed.This
Sample, thermally conductive heat collection body are not needed additionally to increase component, can be fixed together, and heat can be led rapidly by heat sink runner
Enter and export, controls battery in suitable temperature range.
Of the invention be further characterized in that described is welded as supersonic welding, Laser Welding or friction welding (FW).
Optionally, of the invention to be further characterized in that the heat sink runner is thermally conductive heat collection body by bolt or rivets fixed shape
At.In this way, thermally conductive heat collection body can be fixed together, heat can be imported rapidly and be exported by heat sink runner, control battery
In suitable temperature range.
Optionally, of the invention to be further characterized in that the heat sink runner is that thermally conductive heat collection body bending described in multilayer is fixed into one
Body.In this way, the heat on thermally conductive heat collection body would be even more beneficial to concentrate on heat sink runner, is conducive to radiate or heat.
Further, of the invention to be further characterized in that the thermally conductive heat collection body bending is vertical with pole piece or 0-89 ° of inclination angle.This
Sample, the heat on thermally conductive heat collection body would be even more beneficial to concentrate on heat sink runner, are conducive to radiate or heat.
Optionally, of the invention to be further characterized in that the heat sink runner is that the thermally conductive unidirectional bending of heat collection body described in multilayer is fixed
Integrally.In this way, heat sink runner not only installed it is more convenient, but also be conducive to radiate or heat.
Optionally, of the invention to be further characterized in that the heat sink runner is the thermally conductive forward and reverse bending of heat collection body described in multilayer
It is integrally fixed.In this way, heat sink runner is conducive to radiate or heat.
Optionally, it is of the invention be further characterized in that the heat sink runner be the bending of part multilayer the thermally conductive heat collection body with
The straight thermally conductive heat collection body is integrally fixed.In this way, heat sink runner is conducive to radiate or heat.
Optionally, the thermally conductive heat collection body of the invention for being further characterized in that part multilayer bending is unidirectional bending.In this way,
Heat sink runner not only installed it is more convenient, but also be conducive to radiate or heat.
Optionally, the thermally conductive heat collection body of the invention for being further characterized in that part multilayer bending be positive, inverse bending.This
Sample, heat sink runner are conducive to radiate or heat.
Optionally, of the invention to be further characterized in that the perforation of some or all of thermally conductive heat collection body or 3D perforation or 3D are concave-convex.
In this way, the surface area of thermally conductive heat collection body increases, it is more advantageous to heat dissipation or heating.
Optionally, of the invention to be further characterized in that that perforation, netted, 3D perforation, 3D are accompanied between thermally conductive heat collection body is concave-convex
Thermally conductive heat-collecting part.In this way, the heat dissipation of thermally conductive heat collection body or heating efficiency will be more preferable.
Optionally, of the invention be further characterized in that is characterized in that heat sink runner is provided with thermal connection part.In this way, being thermally connected part
Can heat rapidly be imported or be exported heat sink runner.
Further, of the invention to be further characterized in that the thermal connection part is cooling fin.In this way, cooling fin can rapidly will be warm
Amount export heat sink runner.
Further, of the invention to be further characterized in that the thermal connection part is sheet metal.In this way, sheet metal can be fast by heat
Speed export heat sink runner.
Further, of the invention to be further characterized in that the sheet metal is identical as thermally conductive heat collection body material.In this way, sheet metal
It would be even more beneficial to connect with thermally conductive heat collection body.
Optionally, of the invention to be further characterized in that between thermally conductive heat collection body or surface is provided with fin.In this way, thermally conductive thermal-arrest
Heat on body can quickly be exported by fin, and then reduce the temperature of battery.
Optionally, it is of the invention be further characterized in that on thermally conductive heat collection body be provided with it is heat sink.In this way, thermally conductive by heat sink control
Heat collection body is within suitable temperature range.
Optionally, of the invention be further characterized in that is characterized in that heat sink runner is provided with heat-exchanging part.In this way, passing through heat
Replacement part can control the temperature of heat sink runner within the scope of suitable, and battery performance is avoided to be done harm to.
Further, of the invention to be further characterized in that the heat sink runner and the heat-exchanging part are integrally welded.This
Sample, heat sink runner, which does not need addition additional components with heat-exchanging part, securely to be connect, and connects also more convenient.
Further, of the invention to be further characterized in that the heat sink runner and heat-exchanging part bolt, cementing or riveting
It is connected into one.In this way, heat sink runner can be securely joined together with heat-exchanging part.
Optionally, of the invention to be further characterized in that the heat sink runner connection on the housing, the shell serves as scattered
Hot device.In this way, the heat on heat sink runner is beneficial to reach the surface of battery, be conducive to radiate.
Optionally, of the invention to be further characterized in that there are insulating layer, thermal insulation layer or insulating film in thermally conductive heat collection body surface.This
Sample will avoid causing short circuit in inside battery, cause the danger such as explosion.
Optionally, of the invention to be further characterized in that the heat sink water passage surface has insulating layer or insulating film.In this way, will avoid
Short circuit is caused in inside battery, causes the danger such as explosion.
Optionally, it is of the invention be further characterized in that the heat sink runner be located at the ipsilateral of the positive pole ear, opposite side and
At least side of sides adjacent.
Optionally, of the invention to be further characterized in that the heat sink runner has one or two or three in the side of positive pole ear
It is a.It imports or exports from heat sink runner in this way, heat is more advantageous to.
Optionally, of the invention to be further characterized in that thermally conductive heat collection body protrudes from positive plate.In this way, be conducive to heat import or
Export.
Further, the thermally conductive heat collection body of the invention for being further characterized in that protrusion protrudes into the electrolyte in battery case
In.In this way, the heat of thermally conductive heat collection body can import in electrolyte, heat reaches rapidly battery surface through electrolyte, avoid because every
Film heat transfer property is bad, and heat is caused to gather in inside battery, causes dangerous；The heat in electrolyte can also be by leading simultaneously
Hot heat collection body and rapidly import pole piece, avoid battery temperature too low.
Further, electrolyte heat exchanger is heated or cooled in of the invention be further characterized in that in the electrolyte.
In this way, electrolyte can be such that battery temperature maintains in suitable range by the way that thermally conductive heat collection body is heated or cooled.
Optionally, of the invention to be further characterized in that thermally conductive heat collection body is depressed in negative electrode tab.In such manner, it is possible to save inside battery
Space can make the capacity of the battery of same volume bigger.
Optionally, of the invention to be further characterized in that thermally conductive heat collection body is connected position with negative electrode tab with wide.In this way, heating conduction
It is good, and production process is simple.
Optionally, of the invention to be further characterized in that collector of showing up is parallel to anode active material layer.
Further, of the invention to be further characterized in that collector of showing up is complete or collected works' fluid.
Optionally, of the invention to be further characterized in that collector of showing up is in the middle part of ipsilateral covering anode active material layer.
Optionally, of the invention be further characterized in that on the heat sink runner is provided with temperature sensor.In this way, can accurately obtain
Obtain the temperature data on heat sink runner.
Optionally, of the invention be further characterized in that on the heat-exchanging part is provided with temperature sensor.In this way, can be accurate
Obtain the temperature data on heat-exchanging part.
Further, of the invention to be further characterized in that the temperature sensor is film temperature sensor.
Optionally, of the invention to be further characterized in that the positive electrode active materials are LiFePO4, cobalt acid lithium, LiMn2O4 or three
First material.
Optionally, of the invention to be further characterized in that the negative electrode active material is carbon negative pole material, tin base cathode material, contains
Lithium transition-metal nitride negative electrode material or alloy type negative material.
(4) Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 3；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 4；
Fig. 5 is the structural schematic diagram of the embodiment of the present invention 5；
Fig. 6 is the structural schematic diagram of the embodiment of the present invention 6.
(5) specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The technical solution of the present invention is as follows: cylindrical lithium ion battery comprising cylindrical shell, positive cover board, negative cover
Plate, Positive Poles, negative pole and battery core, the anode cover board and the negative cover are respectively and fixedly installed to the shell
Both ends, the Positive Poles and the negative pole are respectively arranged in the anode cover board and the negative cover, and the battery core includes
Negative electrode tab, diaphragm and positive plate, described in negative electrode tab, diaphragm and positive plate successively overlap after be wound into it is cylindric；Positive plate
It is connected with anode ear, is connect with Positive Poles；Negative electrode tab is connected with negative electrode lug, connect with negative pole；The anode ear and negative
The ipsilateral or two sides of battery core main body are arranged in tab, and the negative electrode tab includes negative current collector and is coated on negative current collector
Anode active material layer, the positive plate includes plus plate current-collecting body and coated in the positive electrode active materials on plus plate current-collecting body
Layer, it is characterised in that: thermally conductive heat collection body is provided on positive plate or/and negative electrode tab, the thermally conductive heat collection body is plus plate current-collecting body
Or/and negative current collector positive part or/and the local uncoated active material layer of reverse side collector, at least more than two panels lead
Hot heat collection body builds up the heat sink runner of thermally conductive thermal-arrest in the same area up and down, constitutes the thermal energy disengaging heat sink runner of battery core, heat sink
Runner protrudes into the electrolyte more than needed in shell, and electrolyte heat exchanger is heated or cooled in electrolyte.
In each attached drawing, 1 is cylindrical shell, and 2 be positive cover plate, and 3 be Positive Poles, and 4 be battery core, and 5 be thermally conductive heat collection body,
6 be fluid course component, and 7 be heat-exchange device.
As shown in figure 1, thermally conductive heat collection body and fluid course component are arranged in anode end, the inlet and outlet of fluid course component
The different location of positive cover board side is set simultaneously, and the inlet and outlet of fluid course component and the heat-exchange device of outside batteries connect
It connects.
In Fig. 2, thermally conductive heat collection body and fluid course component are arranged in anode end, the inlet and outlet of fluid course component
The same position of positive cover board side is set simultaneously, and the inlet and outlet of fluid course component and the heat-exchange device of outside batteries connect
It connects.
In Fig. 3, thermally conductive heat collection body and fluid course component are arranged in anode end, the inlet and outlet of fluid course component
The center of Positive Poles is set simultaneously, and the inlet and outlet of fluid course component and the heat-exchange device of outside batteries connect.
In Fig. 4, thermally conductive heat collection body and fluid course component are arranged in battery cathode end, the inlet and outlet of fluid course component
The different location of the bottom (negative pole end) of cylindrical shell is set simultaneously, the inlet and outlet of fluid course component and outside batteries
Heat-exchange device connection.
In Fig. 5, thermally conductive heat collection body and fluid course component are arranged in battery cathode end, the inlet and outlet of fluid course component
The same position of the bottom (negative pole end) of cylindrical shell is set simultaneously, the inlet and outlet of fluid course component and outside batteries
Heat-exchange device connection.
In Fig. 6, thermally conductive heat collection body and fluid course component are arranged in battery cathode end, the inlet and outlet of fluid course component
The same position of the side of cylindrical shell is set simultaneously, and the inlet and outlet of fluid course component and the heat exchange of outside batteries fill
Set connection.
Above content is enumerating for specific embodiments of the present invention, for the equipment and structure of wherein not detailed description, is answered
When being interpreted as that the existing common apparatus in this field and universal method is taken to be practiced.
The above embodiment of the present invention is only to illustrate that technical solution of the present invention is used simultaneously, only the column of technical solution of the present invention
It lifts, the technical solution and its protection scope being not intended to restrict the invention.Using equivalent technologies mean, equivalent apparatus etc. to this hair
The improvement of technical solution disclosed in bright claims and specification is considered to be without departing from claims of the present invention
And range disclosed in specification.
Claims (10)
1. cylindrical lithium ion battery comprising cylindrical shell, positive cover board, negative cover, Positive Poles, negative pole and
Battery core, the anode cover board and the negative cover are respectively and fixedly installed to the both ends of the shell, the Positive Poles and institute
Negative pole to be stated to be respectively arranged in the anode cover board and the negative cover, the battery core includes negative electrode tab, diaphragm and positive plate,
Negative electrode tab, diaphragm and the positive plate is wound into cylindric after successively overlapping；Positive plate is connected with anode ear, with Positive Poles
Connection；Negative electrode tab is connected with negative electrode lug, connect with negative pole；The ipsilateral of battery core main body is arranged in the anode ear and negative electrode lug
Or two sides, the negative electrode tab includes negative current collector and coated in the anode active material layer on negative current collector, described
Positive plate includes plus plate current-collecting body and coated in the anode active material layer on plus plate current-collecting body, it is characterised in that: positive plate or/
Be provided with thermally conductive heat collection body in negative electrode tab, the thermally conductive heat collection body is the positive office of plus plate current-collecting body or/and negative current collector
The collector of the local uncoated active material layer of portion or/and reverse side, thermally conductive heat collection body is up and down in the same area at least more than two panels
The heat sink runner for building up thermally conductive thermal-arrest, constitutes the thermal energy disengaging heat sink runner of battery core, and heat sink runner protrudes into the electricity more than needed in shell
It solves in liquid, electrolyte heat exchanger is heated or cooled in electrolyte.
2. cylindrical lithium ion battery as described in claim 1, it is characterised in that at least more than two panels above and below thermally conductive heat collection body
It is spaced in the heat sink runner that the same area builds up the thermally conductive thermal-arrest of sandwich, constitutes the heat sink runner of battery core thermal energy disengaging.
3. cylindrical lithium ion battery as claimed in claim 2, it is characterised in that the heat sink runner is that thermally conductive heat collection body is logical
It crosses and is welded and fixed to be formed.
4. cylindrical lithium ion battery as claimed in claim 3, it is characterised in that the heat sink runner is that thermally conductive heat collection body is logical
It crosses and is welded and fixed to be formed.
5. cylindrical lithium ion battery as claimed in claim 4, it is characterised in that it is described be welded as supersonic welding, Laser Welding or
Friction welding (FW).
6. cylindrical lithium ion battery as claimed in claim 2, it is characterised in that the heat sink runner is that thermally conductive heat collection body is logical
Cross bolt or the fixed formation of riveting.
7. cylindrical lithium ion battery as claimed in claim 3, it is characterised in that the heat sink runner is thermally conductive described in multilayer
Heat collection body bending is integrally fixed.
8. cylindrical lithium ion battery as described in claim 1, it is characterised in that the thermally conductive heat collection body bending and pole piece
Angle is 0-90 °.
9. the cylindrical lithium ion battery as described in any claim in claim 1 to 8, it is characterised in that the heat sink stream
Road is that the thermally conductive unidirectional bending of heat collection body described in multilayer is integrally fixed；Or the heat sink runner is thermally conductive heat collection body described in multilayer
Forward and reverse bending is integrally fixed；Or the heat sink runner be multilayer bending the thermally conductive heat collection body with it is straight described
Thermally conductive heat collection body is integrally fixed；Or the thermally conductive heat collection body of multilayer bending is positive, inverse bending；Or heat sink runner is
Part multilayered thermally-conductive heat collection body bending and straight thermally conductive heat collection body are integrally welded；Or some or all of thermally conductive heat collection body is worn
Hole or 3D perforation or 3D are concave-convex；Or accompanied between thermally conductive heat collection body perforation, netted, 3D perforation, 3D bumps thermally conductive thermal-arrest portion
Part；Or accompanied between thermally conductive heat collection body the perforation of itself bending, netted, 3D perforation, 3D bumps thermally conductive heat collection body；Or heat
Confluence road is provided with thermal connection part；Or the thermal connection part is cooling fin；Or the thermal connection part is sheet metal；Or institute
Stating sheet metal is more sheet metals；Or the sheet metal is identical as thermally conductive heat collection body material；Or between thermally conductive heat collection body or table
Face is provided with fin；Or it is provided on thermally conductive heat collection body heat sink；Or heat sink runner is provided with heat-exchanging part；Or it is described
Heat sink runner and the heat-exchanging part are integrally welded；Or the heat sink runner bolts with the heat-exchanging part, is cementing
Or it is riveted into one.
10. the cylindrical lithium ion battery as described in any claim in claim 1 to 8, it is characterised in that thermally conductive thermal-arrest
There are insulating layer, thermal insulation layer or insulating film in body surface face；Or the heat sink water passage surface has insulating layer or insulating film；Or institute
State at least side that heat sink runner is located at the ipsilateral of the positive pole ear, opposite side and sides adjacent；Or the heat sink runner exists
There are one or two or three in the side of positive pole ear；Or thermally conductive heat collection body protrudes from positive plate；Or the described of protrusion is led
Hot heat collection body gos deep into the electrolyte in battery case；Or electrolyte heat exchange is heated or cooled in the electrolyte
Device；Or thermally conductive heat collection body is depressed in negative electrode tab；Or thermally conductive heat collection body is connected position with negative electrode tab with wide；Or the heat sink
Temperature sensor is provided on runner；Or temperature sensor is provided on the heat-exchanging part；Or the temperature sensing
Device is film temperature sensor or fiber grating temperature sensor；Or the temperature sensor is film temperature sensor or light
Fine grating temperature sensor；Or the heat sink runner connection is on the housing, the shell serves as radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503651.6A CN109860841A (en) | 2017-06-28 | 2017-06-28 | A kind of cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503651.6A CN109860841A (en) | 2017-06-28 | 2017-06-28 | A kind of cylindrical lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109860841A true CN109860841A (en) | 2019-06-07 |
Family
ID=66887416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710503651.6A Pending CN109860841A (en) | 2017-06-28 | 2017-06-28 | A kind of cylindrical lithium ion battery |
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| Country | Link |
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| CN (1) | CN109860841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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