CN109904553A - A kind of lithium-ion-power cell - Google Patents
A kind of lithium-ion-power cell Download PDFInfo
- Publication number
- CN109904553A CN109904553A CN201710503642.7A CN201710503642A CN109904553A CN 109904553 A CN109904553 A CN 109904553A CN 201710503642 A CN201710503642 A CN 201710503642A CN 109904553 A CN109904553 A CN 109904553A
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- Prior art keywords
- thermally conductive
- positive
- collection body
- heat collection
- conductive heat
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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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- 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
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Abstract
The invention discloses a kind of lithium-ion-power cells, including battery core, metal shell, electrolyte and the top cover being fixedly connected on the metal shell；Battery core includes positive plate, negative electrode tab and diaphragm；Positive pole ear and negative lug are respectively equipped in positive plate and negative electrode tab；Top cover is equipped with Positive Poles and negative pole；Negative electrode tab includes negative current collector and anode active material layer；Positive plate includes plus plate current-collecting body and anode active material layer, it is characterized in that positive plate is provided with thermally conductive heat collection body, the thermally conductive heat collection body is the positive part of plus plate current-collecting body or/and the collector of reverse side part uncoated positive active material layer, is provided with heat-exchange device on thermally conductive heat collection body.The present invention can effectively solve the problems such as battery temperature is too high or too low, reach temperature control, improve battery life and improve production efficiency and other effects.
Description
(1) technical field
The present invention relates to a kind of lithium ion battery more particularly to a kind of lithium-ion-power cells.
(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 lithium ion power 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 lithium-ion-power cell, it can effectively solve battery temperature
The problems such as too high or too low, reaches temperature control, improve battery life and improve production efficiency and other effects.
The technical solution of the present invention is as follows:
Lithium-ion-power cell, metal shell including battery core, for accommodating the battery core are injected into the metal shell
Interior electrolyte and the top cover being fixedly connected on the metal shell；The battery core includes positive plate, negative electrode tab and is interval in
Diaphragm between the positive plate and negative electrode tab, successively battery core is made in lamination or winding in order；The positive plate is equipped with anode
Tab；The negative electrode tab is equipped with negative lug；The top cover is equipped with the Positive Poles being electrically connected with the positive pole ear and institute
State the negative pole of negative lug electrical connection；The negative electrode tab includes negative current collector and coated in negative on negative current collector
Pole active material layer；Positive plate includes plus plate current-collecting body and coated in the anode active material layer on plus plate current-collecting body, feature
It is that positive plate is provided with thermally conductive heat collection body, the thermally conductive heat collection body is the positive part or/and reverse side part of plus plate current-collecting body
The collector of uncoated positive active material layer is provided with heat-exchange device on thermally conductive heat collection body.In this way, thermally conductive heat collection body with just
Pole piece is integrally formed, and is not only simplified process, is improved production efficiency, and makes by the way that thermally conductive heat collection body is heated or cooled, i.e.,
Achievable internal temperature of battery is raised and lowered, and maintains battery in suitable operating temperature always, improves battery working efficiency, prolong
Long battery life eliminates safe hidden trouble.In addition, heat-exchange device is set on thermally conductive heat collection body, it can be by heat-exchange device to just
Extremely thermally conductive heat collection body is heated or cooled, to realize the control to internal temperature of battery, guarantees battery always suitable
Work in temperature range.
The perforation of some or all of described thermally conductive heat collection body or 3D perforation or 3D are concave-convex.In this way, the surface of thermally conductive heat collection body
Product increases, and is more advantageous to cooling or heating.
Perforation is accompanied between the thermally conductive heat collection body, netted, 3D perforates, the thermally conductive heat-collecting part of 3D bumps.In this way, thermally conductive
The surface area of heat collection body increases, and is more advantageous to cooling or heating.
The perforation of bending is accompanied between the thermally conductive heat collection body, netted, 3D perforates, itself thermally conductive heat collection body of 3D bumps.
In this way, the cooling of thermally conductive heat collection body or heating effect are good.
The heat-exchange device is fluid pipe fitting or heat pipe or air conditioning refrigerant pipe or electric heating valve or cooling fin or metal
Piece is heat sink.
The sheet metal is more sheet metals.In this way, the heat on heat sink runner can run through more sheet metals from battery
Export reduces battery temperature.
The sheet metal is identical as thermally conductive heat collection body material.In this way, be conducive to connect between thermally conductive heat collection body and sheet metal,
And be conducive to thermally conductive.
Between the thermally conductive heat collection body or surface is provided with fin.In this way, the heat on thermally conductive heat collection body can pass through fin
Quickly export, and then reduce the temperature of battery.
The heat sink runner and the heat-exchange device are integrally welded.In this way, being tied between heat sink runner and heat-exchange device
It closes securely, and is not required to increase other components, be conducive to improve battery energy density.
The heat sink runner bolts with the heat-exchange device, cementing or be riveted into one.In this way, heat sink runner and heat are handed over
It is firmly combined, and diaphragm etc. will not be damaged between changing device.
There are insulating layer, thermal insulation layer or insulating film in the thermally conductive heat collection body surface.This way it is possible to avoid thermally conductive heat collection body
Short circuit occurs for place, eliminates safe hidden trouble.
The heat sink runner is located at at least side of the ipsilateral of the positive pole ear, opposite side and sides adjacent.In this way, can be with
According to demand, the position of heat sink runner is set.
The thermally conductive heat collection body protrudes from positive plate.In this way, being conducive to overlap between thermally conductive heat collection body, be conducive to heat
It imports or/and exports.
The thermally conductive heat collection body of protrusion protrudes into the electrolyte in battery case.In this way, the heat of thermally conductive heat collection body can
It importing in electrolyte, heat reaches rapidly battery surface through electrolyte, it avoids because diaphragm heat transfer property is bad, and heat is caused to exist
Inside battery gathers, and causes dangerous；The heat in electrolyte can also rapidly import pole piece by thermally conductive heat collection body simultaneously, keep away
It is too low to exempt from battery temperature.
Electrolyte heat exchanger is heated or cooled in the electrolyte.In this way, by heat-exchange device to electrolyte
It is heated or cooled, electrolyte is again heated or cooled thermally conductive heat collection body, and battery temperature is made to maintain suitable model
In enclosing.
The thermally conductive heat collection body is depressed in positive plate.In this way, being conducive to reduce battery weight, battery energy density is improved.
The thermally conductive heat collection body is connected position with positive plate with wide.In this way, in the case where not increasing battery weight, it is thermally conductive
Heat collection body and positive plate connecting portion contact area are maximum, and heat-conducting effect is best.
The collector of showing up is parallel to anode active material layer.In this way, production technology is convenient, high production efficiency.
The collector of showing up is complete or collected works' fluid.In this way, good heat conduction effect.
The collector of showing up is in the middle part of ipsilateral covering anode active material layer.
Temperature sensor is provided on the heat-exchange device.In this way, the temperature on heat-exchange device can be monitored accurately.
The temperature sensor is film temperature sensor.In this way, not only can accurately monitor temperature, but also small etc. with weight
The energy density of battery can be improved in feature.
The lamination is composite laminate or packed or shred lamination.
The positive electrode active materials are LiFePO4, cobalt acid lithium, LiMn2O4 or ternary material.
The negative electrode active material is carbon negative pole material, tin base cathode material, lithium-containing transition metal nitride negative 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 schematic diagram of cell structure in Fig. 1；
Fig. 3 is the schematic diagram of the section structure of battery core in Fig. 1；
Fig. 4 is the schematic diagram of the section structure of battery core；
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；
Fig. 7 is the structural schematic diagram of the embodiment of the present invention 7；
Fig. 8 is the structural schematic diagram of the embodiment of the present invention 8；
Fig. 9 is the structural schematic diagram of the embodiment of the present invention 9；
Figure 10 is the structural schematic diagram of the embodiment of the present invention 10
Figure 11 is the structural schematic diagram of the embodiment of the present invention 11；
Figure 12 is the structural schematic diagram of the embodiment of the present invention 12；
Figure 13 is the structural schematic diagram of the embodiment of the present invention 13.
(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: lithium-ion-power cell, including battery core, the metal-back for accommodating the battery core
Body, the top cover for being injected into the intracorporal electrolyte of the metal-back and being fixedly connected on the metal shell；The battery core includes
Positive plate, negative electrode tab and the diaphragm being interval between the positive plate and negative electrode tab, successively electricity is made in lamination or winding in order
Core；The positive plate is equipped with positive pole ear；The negative electrode tab is equipped with negative lug；The top cover is equipped with and the positive pole ear
The Positive Poles of electrical connection, the negative pole being electrically connected with the negative lug；The negative electrode tab include negative current collector and
Coated in the anode active material layer on negative current collector；Positive plate includes plus plate current-collecting body and coated on plus plate current-collecting body
Anode active material layer, it is characterised in that positive plate is provided with thermally conductive heat collection body, and the thermally conductive heat collection body is plus plate current-collecting body
The collector of positive part or/and reverse side part uncoated positive active material layer is provided with heat exchange dress on thermally conductive heat collection body
It sets.
In each attached drawing, 1 is positive pole ear, and 2 be negative lug, and 3 be positive terminal, and 4 be negative terminal, and 5 be thermally conductive thermal-arrest
Body, 6 be fluid course component, and 7 be battery core, and 8 be heat-exchange device, and 9 be metal shell, and 10 top covers, 11 be heat sink runner.
As shown in figure 1, positive and negative tab setting is provided with thermally conductive heat collection body 5 on the same end, positive/negative plate, and is arranged in pole
The positive terminal 3 being arranged on the opposite end of ear, the i.e. bottom end of metal shell 9, positive pole ear 1 and top cover 10 is by being electrically connected in succession
It connects, the negative terminal 4 being arranged in negative lug 1 and top cover 10 is by being electrically connected connection.Fig. 2 is the structural representation of battery core in Fig. 1
Figure, Fig. 3 are the diagrammatic cross-section of Fig. 2, and thermally conductive heat collection body 5 is connect integral with collector in Fig. 2, Fig. 3.It is multiple thermally conductive in Fig. 4
Heat collection body 5 links together, and forms the heat sink runner 11 of thermally conductive thermal-arrest.
As shown in figure 5, positive and negative tab setting is in the same end, thermally conductive heat collection body 5 is arranged between positive/negative plate, multiple thermally conductive
Heat collection body 5 is overlapped into heat sink runner 11, and fluid course component 6 is arranged on heat sink runner 11, and fluid course component 6 is from negative pole end
The intermediate of son 4 enters, and comes out from 3 one end of positive terminal, is reserved with fluid course in the centre of positive terminal 3 and negative terminal 4
The disengaging pore of component 6, another program fluid course component 6 can also enter from positive terminal 3, come out from negative terminal 4,
There are heat-exchange device 8 and fluid course component 6 to constitute a complete energy circulation outside battery case 9.
As shown in fig. 6, positive and negative tab setting is in the same end, thermally conductive heat collection body 5 is arranged between positive/negative plate, multiple thermally conductive
Heat collection body 5 is overlapped into heat sink runner 11, and fluid course component 6 is arranged on heat sink runner 11, and fluid course component 6 is from top cover 10
The side of end face enters, and comes out from the side of 10 end face of top cover, there is heat-exchange device 8 and fluid course portion outside battery case
Part 6 constitutes a complete energy circulation.
As shown in fig. 7, positive and negative tab setting is in the same end, thermally conductive heat collection body 5 is arranged between positive/negative plate, can be set
It on positive plate, also can be set in negative electrode tab, multiple thermally conductive heat collection bodies 5 are overlapped into heat sink runner 11, fluid course component 6
It is arranged on heat sink runner 11, the port that fluid course component 6 is reserved from 10 end face of top cover passes in and out, and inlet and outlet is respectively provided with
In the port, there are heat-exchange device 8 and fluid course component 6 to constitute a complete energy circulation outside battery case.
As shown in figure 8, positive and negative tab is arranged in the same end, the opposite end of positive and negative tab is arranged in thermally conductive heat collection body 5, can be with
It is arranged on positive plate, also can be set in negative electrode tab, multiple thermally conductive heat collection bodies 5 are overlapped into heat sink runner 11, fluid course
Component 6 is arranged on heat sink runner 11, and fluid course component 6 enters from the bottom surface side of metal shell 9, from 9 bottom of metal shell
The other side in face comes out, and has heat-exchange device 8 to constitute a complete energy with fluid course component 6 outside battery case and follows
Ring.
As shown in figure 9, positive and negative tab is arranged in the same end, the opposite end of positive and negative tab is arranged in thermally conductive heat collection body 5, can be with
It is arranged on positive plate, also can be set in negative electrode tab, multiple thermally conductive heat collection bodies 5 are overlapped into heat sink runner 11, fluid course
Component 6 be arranged on heat sink runner 11, fluid course component 6 from the bottom surface of metal shell 9 reserve port pass in and out, import and
Outlet is arranged at the port, has heat-exchange device 8 and fluid course component 6 to constitute a complete energy outside battery case
Amount circulation.
As shown in Figure 10, positive and negative tab setting is in the same end, and thermally conductive heat collection body 5 is arranged between positive/negative plate, thermally conductive collection
Hot body 5 connect integral with negative electrode tab, and multiple thermally conductive heat collection bodies 5 are overlapped into heat sink runner 11, and fluid course component 6 is arranged in heat
Converge on road 11, fluid course component 6 is come in from the pore that the centre of negative terminal 4 is reserved, in positive terminal and negative pole end
The centre of son is reserved with the disengaging pore of fluid course component 6；(thermally conductive heat collection body 5 connects into whole with positive plate in another program
Body, case fluid course component 6 reserve the disengaging pore disengaging of fluid flow path features 6 from positive terminal 3), outside battery case
There are heat-exchange device 8 and fluid course component 6 to constitute a complete energy circulation.
As shown in figure 11, positive and negative tab is arranged in the same end, and the side of battery core 7 is arranged in thermally conductive heat collection body 5, multiple thermally conductive
Heat collection body 5 is overlapped into heat sink runner 11, and fluid course component 6 is arranged on heat sink runner 11, and fluid course component 6 is from metal-back
The reserved port disengaging in the side of body 9, has heat-exchange device 8 and the composition of fluid course component 6 one complete outside battery case
Whole energy circulation.
As shown in figure 12, positive and negative tab is arranged in the same end, and the side of battery core 7, and indent is arranged in thermally conductive heat collection body 5
With pole piece, multiple thermally conductive heat collection bodies 5 are overlapped into heat sink runner 11, and fluid course component 6 is arranged on heat sink runner 11, fluid stream
The port that road component 6 is reserved from the side of metal shell 9 passes in and out, and has heat-exchange device 8 and fluid course outside battery case
Component 6 constitutes a complete energy circulation.
As shown in figure 13, positive and negative tab is arranged in the same end, and the side of battery core 7 is arranged in thermally conductive heat collection body 5, multiple thermally conductive
Heat collection body 5 is overlapped into heat sink runner 11, and fluid course component 6 is arranged on heat sink runner 11, and the entrance of fluid course component 6 is set
It sets in the side of metal shell 9, the different location of the ipsilateral of metal shell 9 is arranged in the outlet of fluid course component 6, in electricity
There are heat-exchange device 8 and fluid course component 6 to constitute a complete energy circulation outside the shell of pond.
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 (5)
1. lithium-ion-power cell, metal shell including battery core, for accommodating the battery core is injected into the metal shell
Electrolyte and the top cover that is fixedly connected on the metal shell；The battery core includes positive plate, negative electrode tab and is interval in institute
The diaphragm between positive plate and negative electrode tab is stated, successively battery core is made in lamination or winding in order；The positive plate is equipped with positive pole
Ear；The negative electrode tab is equipped with negative lug；The top cover be equipped be electrically connected with the positive pole ear Positive Poles, with it is described
The negative pole of negative lug electrical connection；The negative electrode tab includes negative current collector and coated in the cathode on negative current collector
Active material layer；Positive plate includes plus plate current-collecting body and coated in the anode active material layer on plus plate current-collecting body, and feature exists
Positive plate is provided with thermally conductive heat collection body, the positive part or/and reverse side part that the thermally conductive heat collection body is plus plate current-collecting body are not
The collector of anode active material layer is coated, is provided with heat-exchange device on thermally conductive heat collection body.
2. lithium-ion-power cell as described in claim 1, it is characterised in that some or all of thermally conductive heat collection body perforation or
3D perforation or 3D are concave-convex；Or accompanied between thermally conductive heat collection body perforation, netted, 3D perforation, 3D bumps thermally conductive heat-collecting part；Or
The perforation of bending is accompanied between the thermally conductive heat collection body of person, netted, 3D perforates, itself thermally conductive heat collection body of 3D bumps；Or the heat
Switch is fluid pipe fitting or heat pipe or air conditioning refrigerant pipe or electric heating valve or cooling fin or sheet metal or heat sink；Or it leads
Between hot heat collection body or surface is provided with fin；Or the thermally conductive heat collection body and the heat-exchange device it is integrally welded；Or
Heat sink runner described in person bolts with the heat-exchange device, cementing or be riveted into one；Or there is insulation on thermally conductive heat collection body surface
Layer, thermal insulation layer or insulating film；Or the thermally conductive heat collection body is located at the ipsilateral of the positive pole ear, opposite side and sides adjacent
At least side；Or thermally conductive heat collection body protrudes from positive plate；Or thermally conductive heat collection body is depressed in positive plate；Or thermally conductive thermal-arrest
Body is connected position with positive plate with wide；Or collector of showing up is complete or collected works' fluid；Or collector of showing up is parallel to positive-active
Material layer；Or collector of showing up is in the middle part of ipsilateral covering anode active material layer；Or it is provided on the heat-exchange device
Temperature sensor.
3. lithium-ion-power cell as claimed in claim 2, it is characterised in that the sheet metal is more sheet metals；Or it is described
Sheet metal is identical as thermally conductive heat collection body material；Or the thermally conductive heat collection body of protrusion protrudes into the electrolyte in battery case；
Or the temperature sensor is film temperature sensor.
4. lithium-ion-power cell as claimed in claim 3, it is characterised in that electrolysis is heated or cooled in the electrolyte
Liquid heat exchanger.
5. lithium-ion-power cell as described in claim 1, it is characterised in that the lamination is that composite laminate is packed or thin
Piece lamination；Or the positive electrode active materials are LiFePO4, cobalt acid lithium, LiMn2O4 or ternary material；Or the cathode is living
Property material be carbon negative pole material, tin base cathode material, lithium-containing transition metal nitride negative material or alloy type negative material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503642.7A CN109904553A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium-ion-power cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503642.7A CN109904553A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium-ion-power cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109904553A true CN109904553A (en) | 2019-06-18 |
Family
ID=66938528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710503642.7A Pending CN109904553A (en) | 2017-06-28 | 2017-06-28 | A kind of lithium-ion-power cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109904553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001896A1 (en) * | 2022-06-27 | 2024-01-04 | 陕西奥林波斯电力能源有限责任公司 | Battery temperature control system, high-capacity battery, battery pack, battery shell and heat exchange apparatus |
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| JP2005071784A (en) * | 2003-08-25 | 2005-03-17 | Nissan Motor Co Ltd | Bipolar battery having cooling tab |
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