CN108183280B - Electric automobile power battery cooling device and cooling system thereof - Google Patents
Electric automobile power battery cooling device and cooling system thereof Download PDFInfo
- Publication number
- CN108183280B CN108183280B CN201711409484.5A CN201711409484A CN108183280B CN 108183280 B CN108183280 B CN 108183280B CN 201711409484 A CN201711409484 A CN 201711409484A CN 108183280 B CN108183280 B CN 108183280B
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- power battery
- liquid
- cooling device
- box body
- box
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
Abstract
The invention provides a power battery cooling device of an electric automobile, which comprises a containing box for containing a power battery, wherein the containing box comprises a box cover and a box body, a containing cavity for containing insulating liquid is arranged in the box cover, a liquid distribution hole is formed in the containing cavity, the power battery is positioned below the liquid distribution hole, and a liquid return hole is formed in the bottom of the box body or the bottom of the side wall of the box body; the power battery can be well cooled, and the heat dissipation balance of the whole power battery can be ensured, so that the performance of the whole power battery is effectively ensured, and the service life of the power battery is prolonged; the whole cooling device does not need to arrange other cooling pipelines in the power battery pack, saves space, is favorable for improving the energy density of the power battery, and is favorable for arranging the power battery pack in a whole vehicle.
Description
Technical Field
The invention relates to the field of power battery cooling, in particular to a power battery cooling device of an electric automobile and a cooling system thereof.
Background
The power battery is one of the core components of the electric vehicle, and because the working condition of the electric vehicle is complex and the environment is severe in the using process of the electric vehicle, the power battery of the electric vehicle heats seriously under the condition, if the power battery is not cooled in time to take away the heat generated by the battery, the performance attenuation of the power battery is serious, and even a safety accident can be caused.
In the prior art, the following methods are mainly used for cooling the power battery: natural cooling, air cooling, indirect water cooling, refrigerant direct cooling and immersion oil cooling centralized mode, however, the existing cooling mode has the following defects: the natural cooling belongs to passive cooling, the heat dissipation effect is poor, the heat dissipation balance of the power battery is poor, and the air cooling also has the defects of poor heat dissipation effect and poor heat dissipation balance; and indirect water-cooling is through being connected with whole car air conditioning system, set up water-cooling board or side arrangement coiled pipe heat dissipation in the bottom of power battery package, this kind of mode, can lead the different position difference in temperature of power battery great, and crowd the space that occupies power battery package, be unfavorable for arranging of whole car, the control strategy degree of difficulty of refrigerant direct cooling is big, although heat dissipation power is big, nevertheless, can lead the uniformity of power battery's electric core temperature relatively poor, present immersion oil cooling is all soaked in the middle of insulating liquid oil with whole inside all devices of power battery package, set up cooling fan at battery package outside box edge and take away the heat, this kind of cooling method radiating effect is not good, liquid weight is big, power battery package energy density is low.
Therefore, in order to solve the above technical problems, it is necessary to provide a new solution.
Disclosure of Invention
In view of this, the present invention provides a cooling device for a power battery of an electric vehicle, which can cool the power battery well and ensure the heat dissipation balance of the whole power battery, thereby effectively ensuring the performance of the whole power battery and prolonging the service life of the power battery; other cooling pipelines need to be arranged in the power battery pack in the whole cooling device, so that the space is saved, the improvement of the energy density of the power battery is facilitated, and the arrangement of the power battery pack in the whole vehicle is facilitated.
The invention provides a power battery cooling device of an electric automobile, which comprises a containing box for containing a power battery, wherein the containing box comprises a box cover and a box body, a containing cavity for containing insulating liquid is arranged in the box cover, a liquid distribution hole is formed in the containing cavity, the power battery is positioned below the liquid distribution hole, and a liquid return hole is formed in the bottom of the box body or the bottom of the side wall of the box body.
Further, the case lid includes the lid and sets up the cloth liquid board in the lid, the cloth liquid board is parallel with the lower surface at lid top, it has the clearance and forms and holds the chamber to have between cloth liquid board and the lid top, the cloth liquid hole sets up in the cloth liquid board.
Furthermore, the liquid distribution holes are multiple.
Further, the lid is provided with annotates the liquid hole and be located the top of cloth liquid board.
Furthermore, the bottom of the box body is of an inclined structure, and the liquid return hole is located at the tail end of the inclined structure.
Further, still including the plummer that is used for bearing power battery, the plummer sets up in the box, the plummer is provided with the liquid flow hole.
Further, the plummer is the wedge structure, the upper surface of plummer is parallel with the cloth liquid board, and the lower surface is fit for with the bottom of box.
Furthermore, the liquid return hole is positioned in the geometric center of the bottom of the box body, and the bottom of the box body inclines towards the liquid return hole.
Correspondingly, the invention also provides a power battery cooling system of the electric automobile, which comprises the cooling device, the heat exchanger, the oil pump and the oil tank for containing the insulating liquid, wherein the input end of the oil pump is communicated with the oil tank, the output end of the oil pump is communicated with the liquid injection hole of the cooling device, the liquid return hole of the cooling device is communicated with the input end of the heat exchanger, and the output end of the heat exchanger is communicated with the oil tank.
The invention has the beneficial effects that: according to the invention, the power battery can be well cooled, and the heat dissipation balance of the whole power battery can be ensured, so that the performance of the whole power battery is effectively ensured, and the service life of the power battery is prolonged; other cooling pipelines need to be arranged in the power battery pack in the whole cooling device, so that the space is saved, the improvement of the energy density of the power battery is facilitated, and the arrangement of the power battery pack in the whole vehicle is facilitated.
Drawings
The invention is further described below with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of an embodiment of the cooling device of the present invention.
Fig. 2 is a schematic diagram of the cooling system of the present invention.
Fig. 3 is a schematic structural view of another embodiment of the cooling device of the present invention.
Fig. 4 is a schematic structural diagram of the carrier stage in fig. 1 according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings of the specification:
the invention provides a power battery cooling device of an electric automobile, which comprises a containing box 1 for containing a power battery, wherein the containing box 1 comprises a box cover and a box body 2, a containing cavity 16 for containing insulating liquid is arranged in the box cover, a liquid distribution hole 6 is formed in the containing cavity 16, the power battery is positioned below the liquid distribution hole 6, and a liquid return hole 10 is formed in the bottom of the box body 2 or the bottom of the side wall of the box body 2; the whole cooling device needs to arrange other cooling pipelines in the power battery pack, so that the space is saved, the energy density of the power battery is improved, and the arrangement of the power battery pack in the whole vehicle is facilitated; the insulating liquid collects and flows out at the bottom of the tank, wherein the insulating liquid is generally an existing insulating oil.
In this embodiment, the case lid includes lid 3 and sets up the cloth liquid board 5 in lid 3, cloth liquid board 5 is parallel with the lower surface at lid 3 top, it holds chamber 16 to have the clearance and form between cloth liquid board 5 and the lid 3 top, cloth liquid hole 6 sets up in cloth liquid board 5, through this kind of structure, does benefit to processing for whole simple structure is compact, and does benefit to the adjustment and holds the volume size in chamber.
In this embodiment, the liquid distribution holes 6 are multiple, wherein the aperture sizes of the liquid distribution holes 6 may be different, and the aperture sizes of the liquid distribution holes are set smaller in a region where the liquid distribution plate is relatively larger and where the heat is not serious corresponding to a region where the heat is serious, and the aperture sizes of the liquid distribution holes may also be equal, but the density of the liquid distribution holes is higher in a region where the heat is serious and the density of the liquid distribution holes is lower in a region where the heat is not serious corresponding to a region where the heat is serious, such as a node position.
In this embodiment, the lid 3 is provided with the liquid injection hole 4 and the liquid injection hole 4 is located above the liquid distribution plate 5, that is, the liquid injection hole may be arranged on the top of the lid or on the skirt of the lid, but it is only necessary to ensure that the liquid injection hole is located above the liquid distribution plate, and preferably, as shown in fig. 1, the liquid distribution hole is selected to be located on the top of the lid; wherein, annotate liquid hole 4 and can also arrange a plurality ofly and evenly to make whole cloth liquid board can both obtain sufficient insulating liquid, thereby do benefit to and realize good cooling to power battery.
In this embodiment, the bottom of the box body 2 is an inclined structure, and the liquid return hole 10 is located at the tail end of the inclined structure; preferably, the liquid return hole 10 is located at the geometric center of the bottom of the tank 2, as shown in fig. 1, such as: if the bottom of the box body is of a circular structure, the axis of the liquid return hole penetrates through the circle center of the bottom of the box body, and if the bottom of the box body is of a rectangular structure, the axis of the liquid return hole penetrates through the intersection point of the diagonal lines of the bottom of the box body; the bottom of the box body 2 inclines towards the liquid return hole 10, and by the structure, the insulating liquid can be guaranteed to be collected at the bottom of the box body rapidly, so that the circulating flow of the insulating liquid is accelerated, of course, the structure in fig. 3 can also be adopted, the bottom of the box body 2 inclines towards one direction, but the structure is located far away from the tail end of the inclined insulating liquid, and the flowing distance of the insulating liquid is not beneficial to the collection of the liquid, wherein, the inclined angle of the bottom of the box body is 5-15 degrees, especially, the inclined angle of 10 degrees is optimal, the backflow collecting speed of the liquid can be guaranteed, and the bottom of the box body can not be too convex to influence the arrangement of the whole structure, as shown in fig. 3, if the inclined structure of the bottom of the box body inclines from one end to the other.
In this embodiment, the device further comprises a bearing platform 8 for bearing the power battery 7, the bearing platform 8 is disposed in the box body 2, the bearing platform 8 is provided with a liquid flow hole 9, the bearing platform 8 is of a wedge-shaped structure, the upper surface of the bearing platform 8 is parallel to the liquid distribution plate, and the lower surface of the bearing platform is in form fit with the bottom of the box body 2, as shown in fig. 1, in order to ensure the arrangement of the electric core of the power battery, the upper surface of the bearing platform should be kept in a horizontal structure, which is not an absolute horizontal structure, i.e. the upper surface of the bearing platform is parallel to the surface of the liquid distribution plate, so that the insulating liquid can flow to the electric core of the power battery as long as the side wall of the box body is perpendicular to the bearing surface of the vehicle body during the installation process of the device, and through the structure, on one hand, the arrangement and, of course, if the tank is of cylindrical configuration, the platform could be of frustoconical configuration as shown in FIG. 4 and likewise be provided with a flow orifice.
Correspondingly, the invention also provides a power battery cooling system of the electric automobile, which comprises the cooling device, the heat exchanger 12, the oil pump and the oil tank 13 for containing insulating liquid, wherein the input end of the oil pump is communicated with the oil tank 13, the output end of the oil pump is communicated with the liquid injection hole 4 of the cooling device, the liquid return hole 10 of the cooling device is communicated with the input end of the heat exchanger 12, and the output end of the heat exchanger is communicated with the oil tank; the whole cooling device needs to arrange other cooling pipelines in the power battery pack, so that the space is saved, the energy density of the power battery is improved, and the arrangement of the power battery pack in the whole vehicle is facilitated; of course, in the system, in order to ensure the smoothness of the flow of the insulating liquid, two oil pumps may be provided, wherein the oil pump i 14 is used to provide the insulating oil in the insulating oil tank to the cooling device, the oil pump ii 11 is used to convey the insulating liquid at the bottom of the tank 2 to the heat exchanger 12, perform heat exchange cooling on the hot insulating liquid, and return the insulating liquid to the oil tank 13, in order to adjust the flow rate of the insulating liquid injected into the cooling device, an electromagnetic valve 15 may be provided at the output end of the oil pump i 14 to control the flow rate, a temperature sensor may be provided in the cooling device to detect the temperature parameter of the power battery as the control basis of the electromagnetic valve, and the control of the electromagnetic valve may be controlled by a whole vehicle controller or by a.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A power battery cooling device of an electric automobile comprises a containing box for containing a power battery, wherein the containing box comprises a box cover and a box body, a containing cavity for containing insulating liquid is formed in the box cover, a liquid distribution hole is formed in the containing cavity, the power battery is located below the liquid distribution hole, and a liquid return hole is formed in the bottom of the box body or the bottom of the side wall of the box body;
the box cover comprises a cover body and a liquid distribution plate arranged in the cover body, the liquid distribution plate is parallel to the lower surface of the top of the cover body, a gap is formed between the liquid distribution plate and the top of the cover body to form an accommodating cavity, and the liquid distribution holes are formed in the liquid distribution plate;
the liquid distribution holes are uniformly distributed;
still including the plummer that is used for bearing power battery, the plummer sets up in the box, the plummer is provided with the liquid flow hole.
2. The cooling device for the power battery of the electric automobile according to claim 1, characterized in that: the lid is provided with annotates the liquid hole and annotates the top that the liquid hole is located the cloth liquid board.
3. The cooling device for the power battery of the electric automobile according to claim 1, characterized in that: the bottom of the box body is of an inclined structure, and the liquid return hole is located at the tail end of the inclined structure.
4. The cooling device for the power battery of the electric automobile according to claim 3, characterized in that: the bearing table is of a wedge-shaped structure, the upper surface of the bearing table is parallel to the liquid distribution plate, and the lower surface of the bearing table is in fit with the bottom of the box body.
5. The cooling device for the power battery of the electric automobile according to claim 4, characterized in that: the liquid return hole is positioned at the geometric center of the bottom of the box body, and the bottom of the box body inclines towards the liquid return hole.
6. The utility model provides an electric automobile power battery cooling system which characterized in that: the cooling device comprises the cooling device, a heat exchanger, an oil pump and an oil tank for containing insulating liquid, wherein the input end of the oil pump is communicated with the oil tank, the output end of the oil pump is communicated with a liquid injection hole of the cooling device, a liquid return hole of the cooling device is communicated with the input end of the heat exchanger, and the output end of the heat exchanger is communicated with the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711409484.5A CN108183280B (en) | 2017-12-22 | 2017-12-22 | Electric automobile power battery cooling device and cooling system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711409484.5A CN108183280B (en) | 2017-12-22 | 2017-12-22 | Electric automobile power battery cooling device and cooling system thereof |
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| Publication Number | Publication Date |
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| CN108183280A CN108183280A (en) | 2018-06-19 |
| CN108183280B true CN108183280B (en) | 2020-11-13 |
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| CN201711409484.5A Active CN108183280B (en) | 2017-12-22 | 2017-12-22 | Electric automobile power battery cooling device and cooling system thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747022B (en) * | 2018-06-21 | 2020-08-21 | 哈尔滨工业大学（威海） | Laser powder filling swing welding method for new energy power battery cooling box |
| CN113937383B (en) * | 2020-06-29 | 2023-10-13 | 比亚迪股份有限公司 | Battery module, battery pack and vehicle |
| CN113488717A (en) * | 2021-06-08 | 2021-10-08 | 同济大学 | Atomization cooling method and device for vehicle soft package lithium ion power battery |
| CN113471576A (en) * | 2021-07-19 | 2021-10-01 | 合肥工业大学 | Oil-cooled battery thermal management system and control method |
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| JP2009054303A (en) * | 2007-08-23 | 2009-03-12 | Toyota Motor Corp | Battery pack |
| CN102157715A (en) * | 2011-03-16 | 2011-08-17 | 东莞新能源科技有限公司 | Battery pack |
| CN103401044A (en) * | 2013-07-18 | 2013-11-20 | 三门峡速达交通节能科技股份有限公司 | Power battery heat management system based on flat plate heat pipes |
| CN105932187A (en) * | 2016-05-31 | 2016-09-07 | 三门峡博睿化工技术研发有限公司 | Quick charge type electric vehicle battery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102723446B (en) * | 2012-05-29 | 2015-02-18 | 郑州宇通客车股份有限公司 | Battery inner box and battery temperature control box employing battery inner box |
| CN104124492A (en) * | 2014-07-24 | 2014-10-29 | 谢彦君 | Power battery heat management device and manufacturing method thereof |
| CN205141099U (en) * | 2015-12-02 | 2016-04-06 | 北京无极合一新能源科技有限公司 | Group battery and batteries of electric vehicle thermal management system |
| CN106876823A (en) * | 2017-03-15 | 2017-06-20 | 苏州安靠电源有限公司 | Fountain heats refrigerating integrated safety battery bag |
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2017
- 2017-12-22 CN CN201711409484.5A patent/CN108183280B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009054303A (en) * | 2007-08-23 | 2009-03-12 | Toyota Motor Corp | Battery pack |
| CN102157715A (en) * | 2011-03-16 | 2011-08-17 | 东莞新能源科技有限公司 | Battery pack |
| CN103401044A (en) * | 2013-07-18 | 2013-11-20 | 三门峡速达交通节能科技股份有限公司 | Power battery heat management system based on flat plate heat pipes |
| CN105932187A (en) * | 2016-05-31 | 2016-09-07 | 三门峡博睿化工技术研发有限公司 | Quick charge type electric vehicle battery system |
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| CN108183280A (en) | 2018-06-19 |
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