CN104201435A - Sealed liquid-cooling lithium ion battery pack - Google Patents
Sealed liquid-cooling lithium ion battery pack Download PDFInfo
- Publication number
- CN104201435A CN104201435A CN201410437897.4A CN201410437897A CN104201435A CN 104201435 A CN104201435 A CN 104201435A CN 201410437897 A CN201410437897 A CN 201410437897A CN 104201435 A CN104201435 A CN 104201435A
- Authority
- CN
- China
- Prior art keywords
- upper cover
- battery pack
- cooling
- box body
- lower box
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 41
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a sealed liquid-cooling lithium ion battery pack which is applied to the technical field of batteries. The sealed liquid-cooling lithium ion battery pack comprises an upper cover, cooling pipelines, an electrical interface, storage batteries and a lower box body, wherein the upper cover and the lower box body are matched, the lower box body is covered with the upper cover hermetically, and pipeline through holes are formed in the side wall of the upper cover; the cooling pipelines penetrate through the upper cover through the pipeline through holes, and two ends of each cooling pipeline are arranged on the outer side of the upper cover; the electrical interface is formed in the side wall of the lower box body; the storage batteries are mounted in the lower box body; one end of the electrical interface is hermetically and electrically connected with the storage batteries. According to the invention, the battery pack is designed to be of a structure comprising the upper cover, the lower box body, the cooling pipelines, the electrical interface, the storage batteries and the like which can be independently produced and processed, and has the characteristics of high heat dissipation efficiency, good protection performance, easiness in production, assembly and maintenance, low cost and the like.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a sealed liquid-cooled lithium ion battery pack.
Background
The battery pack is used as a main energy storage element of a battery pack loaded on the electric automobile, is a key part of the electric automobile, and directly influences the performance of the electric automobile. Lithium ion batteries have the advantages of excellent power output characteristics, long service life and the like, and are currently well applied to electric vehicle battery packs.
Because the lithium ion battery generates reaction heat and joule heat (caused by internal resistance of the battery) in the charging and discharging processes, the temperature of the battery per se can change in the charging and discharging processes, mainly showing temperature rise, and particularly showing that the temperature rise is more obvious under the conditions of large current and high power operation. When the temperature of the battery is too high, the performance of the battery is reduced, the cycle performance of the battery is affected when the temperature of the battery exceeds 50 ℃ for a long time, and the safety accident of the battery can be caused by further increase of the temperature. Therefore, the heat dissipation of the battery needs to be considered in designing the lithium ion battery module.
At present, the electric automobile field mainly adopts two heat dissipation modes of air cooling and liquid cooling. The air cooling mode is to directly lead the air to pass through the battery pack to achieve the purpose of heat dissipation, and the heat dissipation mode has the advantages of simple design, easy maintenance and lower cost, but has the defects of low heat dissipation efficiency, inapplicability in high-temperature or severe cold areas and difficult realization of sealing. The liquid cooling mode is to adopt liquid to exchange heat with air around the battery pack to realize the purpose of heat dissipation, generally a heat transfer pipe needs to be arranged between the single batteries of the battery pack or a jacket is arranged around the single batteries, and a heat transfer medium can adopt water, glycol and the like.
In recent years, with the rapid development of the electric automobile market, the requirements on the battery heat dissipation technology are higher and higher, and a heat dissipation mode with high efficiency, safety and low cost becomes an important research and development direction of battery heat management.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a lithium ion battery pack which is high in heat dissipation efficiency, good in protection performance and easy to produce and assemble.
In order to achieve the above object, an embodiment of the present invention provides a sealed liquid-cooled lithium ion battery pack, including: the cooling device comprises an upper cover, a cooling pipeline, an electrical interface, a storage battery pack and a lower box body; wherein,
the upper cover is matched with the lower box body, the lower box body is sealed and fitted with the upper cover, and a pipeline through hole is formed in the side wall of the upper cover;
the cooling pipeline penetrates through the upper cover through the pipeline perforation, and two ends of the cooling pipeline are positioned outside the upper cover;
the side wall of the lower box body is provided with an electrical interface;
the storage battery pack is arranged in the lower box body;
one end of the electrical interface is hermetically and electrically connected with the storage battery pack.
By means of the technical scheme, the battery pack is designed into a structure consisting of the upper cover, the lower box body, the cooling pipeline, the electrical interface, the storage battery pack and the like which can be produced and processed in a separable mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic cross-sectional view of a sealed, liquid-cooled lithium ion battery pack provided by the present invention;
FIG. 2 is a schematic view of a flattened cooling tube provided by the present invention;
FIG. 3 is a schematic top view of a sealed liquid-cooled lithium ion battery pack having S-shaped cooling channels according to the present invention;
fig. 4 is a schematic top view of a sealed liquid-cooled lithium ion battery pack with dual rows of cooling ducts according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a sealed liquid-cooled lithium ion battery pack, as shown in fig. 1, which is a schematic cross-sectional view of the sealed liquid-cooled lithium ion battery pack, and the sealed liquid-cooled lithium ion battery pack comprises: the cooling device comprises an upper cover 1, a cooling pipeline 2, an electrical interface 3, a storage battery pack 4 and a lower box body 5.
The upper cover 1 is matched with the lower box body 5, the sealing cover is closed on the lower box body 5, and the side wall of the upper cover 1 is provided with a pipeline through hole 6; the cooling pipeline 2 is arranged in the upper cover 1 in a penetrating way through the pipeline perforation 6, and two ends of the cooling pipeline are positioned outside the upper cover 1 and used for transmitting cooling water or other cooling liquid (such as glycol, oil, refrigerant and the like); the side wall of the lower box body 5 is provided with an electrical interface 3; the storage battery pack 4 is arranged in the lower box body 5; one end of the electric interface 3 is hermetically and electrically connected with the storage battery pack 4.
During specific implementation, two ends of the cooling pipeline 2 can be connected with a cooling liquid pipe of the electric automobile and are respectively used for inputting and discharging cooling liquid, the circularly input cooling liquid exchanges heat with air in the upper cover 1 and the lower box body 5, heat generated by the storage battery pack 4 is taken away, and the storage battery pack 4 is cooled so as to maintain normal operation of the storage battery pack.
In the present invention, the number of the pipe through holes 6 is matched with the number of the cooling pipes 2, and in order to enhance the heat dissipation effect, the cooling pipes 2 may have a flat cavity structure as shown in fig. 2.
Furthermore, the cooling duct 2 may be disposed in an S-shape in its portion in the upper cover 1 as shown in fig. 3 (top view).
IN addition to the consideration of enhancing the heat dissipation effect, IN order to overcome the problem of the heat dissipation efficiency of a single cooling pipe IN the liquid flow direction, as shown IN fig. 4 (top view), the cooling pipes 2 of the present invention may be arranged IN two rows (or multiple rows) through the upper cover 1, and the liquid inlet ends (IN the figure) and the liquid outlet ends (OUT IN the figure) of the adjacent cooling pipes 2 are staggered, that is, the liquid inlet end of each cooling pipe 2 is close to the liquid outlet end of the adjacent cooling pipe 2.
In order to improve the sealing protection effect and ensure the safety of the storage battery pack 4, the upper cover 1 and the lower box body 5 are designed to be in a sealing cover type design, and the sealing cover type design can specifically include but is not limited to the following forms:
(1) the upper cover 1 is connected with the lower box body 5 through a buckle, and a sealing rubber gasket is arranged on the contact surface of the upper cover 1 and the lower box body 5.
(2) The upper cover 1 is connected with the lower box body 5 through a buckle, and the contact surface of the upper cover 1 and the lower box body 5 is coated with sealing colloid.
The upper cover 1 and the lower box body 5 can be conveniently disassembled and packaged through opening and buckling of the buckles, and convenience is provided for assembly, maintenance and element replacement of the battery pack.
The battery pack has the advantages of simple structure, simplicity in assembly, low maintenance cost and the like compared with the existing liquid-cooled battery pack heat dissipation structure.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A sealed, liquid-cooled lithium ion battery pack, comprising: the cooling device comprises an upper cover, a cooling pipeline, an electrical interface, a storage battery pack and a lower box body; wherein,
the upper cover is matched with the lower box body, the lower box body is sealed and fitted with the upper cover, and a pipeline through hole is formed in the side wall of the upper cover;
the cooling pipeline penetrates through the upper cover through the pipeline perforation, and two ends of the cooling pipeline are positioned outside the upper cover;
the side wall of the lower box body is provided with an electrical interface;
the storage battery pack is arranged in the lower box body;
one end of the electrical interface is hermetically and electrically connected with the storage battery pack.
2. The sealed, liquid-cooled lithium ion battery pack of claim 1, wherein the cooling conduit is flat.
3. The sealed, liquid-cooled lithium ion battery pack of claim 1, wherein the portion of the cooling conduit in the upper cover is disposed in an S-shape.
4. The sealed, liquid-cooled lithium ion battery pack of claim 1, wherein the cooling conduits are disposed through the top cover in two or more rows, and the inlet ends and the outlet ends of adjacent cooling conduits are staggered.
5. The sealed, liquid-cooled lithium ion battery pack of claim 1, wherein the upper cover is connected to the lower case by a snap fit.
6. The sealed, liquid-cooled lithium ion battery pack of claim 5, wherein a sealing rubber gasket is disposed on a contact surface of the upper cover and the lower case.
7. The sealed, liquid-cooled lithium ion battery pack according to claim 5, wherein a sealing gel is applied to a contact surface of the upper cover and the lower case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410437897.4A CN104201435A (en) | 2014-08-29 | 2014-08-29 | Sealed liquid-cooling lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410437897.4A CN104201435A (en) | 2014-08-29 | 2014-08-29 | Sealed liquid-cooling lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104201435A true CN104201435A (en) | 2014-12-10 |
Family
ID=52086691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410437897.4A Pending CN104201435A (en) | 2014-08-29 | 2014-08-29 | Sealed liquid-cooling lithium ion battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104201435A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514311A (en) * | 2015-11-30 | 2016-04-20 | 奇瑞汽车股份有限公司 | Battery pack housing and battery pack with battery pack housing |
| CN107763550A (en) * | 2017-10-27 | 2018-03-06 | 贵州德江韫韬科技有限责任公司 | A kind of civil power street lamp |
| CN107883313A (en) * | 2017-10-27 | 2018-04-06 | 贵州德江韫韬科技有限责任公司 | A kind of garden landscape lamp |
| CN108461861A (en) * | 2018-02-06 | 2018-08-28 | 华霆（合肥）动力技术有限公司 | Liquid cooling pipe and supply unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906945Y (en) * | 2005-03-11 | 2007-05-30 | 北京天睿力迈科技有限公司 | Heat sink cooling device for high power sealed lead acid storage battery for submarine vessel |
| CN201877544U (en) * | 2010-12-13 | 2011-06-22 | 成都比亚迪科技有限公司 | Efficient constant-temperature battery |
| WO2011116959A2 (en) * | 2010-03-26 | 2011-09-29 | Daimler Ag | Temperature control element for a battery |
| CN202205826U (en) * | 2011-08-25 | 2012-04-25 | 比亚迪股份有限公司 | Battery pack and power supply system with same |
| CN204045697U (en) * | 2014-08-29 | 2014-12-24 | 普天新能源车辆技术有限公司 | A kind of sealing liquid cooling lithium ion battery bag |
-
2014
- 2014-08-29 CN CN201410437897.4A patent/CN104201435A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906945Y (en) * | 2005-03-11 | 2007-05-30 | 北京天睿力迈科技有限公司 | Heat sink cooling device for high power sealed lead acid storage battery for submarine vessel |
| WO2011116959A2 (en) * | 2010-03-26 | 2011-09-29 | Daimler Ag | Temperature control element for a battery |
| CN201877544U (en) * | 2010-12-13 | 2011-06-22 | 成都比亚迪科技有限公司 | Efficient constant-temperature battery |
| CN202205826U (en) * | 2011-08-25 | 2012-04-25 | 比亚迪股份有限公司 | Battery pack and power supply system with same |
| CN204045697U (en) * | 2014-08-29 | 2014-12-24 | 普天新能源车辆技术有限公司 | A kind of sealing liquid cooling lithium ion battery bag |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514311A (en) * | 2015-11-30 | 2016-04-20 | 奇瑞汽车股份有限公司 | Battery pack housing and battery pack with battery pack housing |
| CN105514311B (en) * | 2015-11-30 | 2018-03-16 | 奇瑞汽车股份有限公司 | A kind of battery pack case and the battery bag with the battery pack case |
| CN107763550A (en) * | 2017-10-27 | 2018-03-06 | 贵州德江韫韬科技有限责任公司 | A kind of civil power street lamp |
| CN107883313A (en) * | 2017-10-27 | 2018-04-06 | 贵州德江韫韬科技有限责任公司 | A kind of garden landscape lamp |
| CN108461861A (en) * | 2018-02-06 | 2018-08-28 | 华霆（合肥）动力技术有限公司 | Liquid cooling pipe and supply unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141210 |