CN113624043A - Temperature-equalizing distributed parallel micro-flow-channel heat exchanger and application thereof - Google Patents
Temperature-equalizing distributed parallel micro-flow-channel heat exchanger and application thereof Download PDFInfo
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- CN113624043A CN113624043A CN202110903682.7A CN202110903682A CN113624043A CN 113624043 A CN113624043 A CN 113624043A CN 202110903682 A CN202110903682 A CN 202110903682A CN 113624043 A CN113624043 A CN 113624043A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a temperature-equalizing distributed parallel micro-flow-channel heat exchanger and application thereof, relating to the technical field of thermal management of power batteries of electric vehicles, and comprising a liquid inlet shunting cavity, parallel micro-fine pipelines and a liquid outlet shunting cavity; the parallel micro-pipelines are a plurality of pipe bundles with equal length difference, sequentially penetrate through the liquid inlet shunting cavity and the liquid outlet shunting cavity from long to short, and liquid heat exchange working media enter from the liquid inlet shunting cavity and sequentially flow through the parallel micro-pipelines with different lengths and then flow into the liquid outlet shunting cavity; the liquid inlet shunting cavity and the liquid outlet shunting cavity are respectively provided with a shunting structure for improving the flow uniformity of the liquid heat exchange working medium flowing through each parallel micro-pipeline. The invention can improve the uniformity of working medium flow distribution in the parallel flow channels, can realize the transmission and release of the same heat of each single battery when being applied to the liquid cooling heat management of the power battery, and better improves the temperature equalizing performance of the whole power battery pack.
Description
Technical Field
The invention belongs to the technical field of thermal management of power batteries of electric vehicles, and particularly relates to a uniform-temperature distributed parallel micro-flow-channel heat exchanger and application thereof.
Background
The technical key of the electric automobile is a power battery, and the quality of the performance of the power battery directly determines the overall performance, safety, service life and the like of the electric automobile. Among various performance parameters of the power battery, the temperature is a key parameter which affects the safety, performance and service life of the battery, the performance of the whole vehicle is reduced due to the excessively low temperature, and a thermal runaway safety accident may be caused due to the excessively high temperature. Therefore, a thermal management system design needs to be carried out on the power battery in the battery box body of the electric automobile, the purpose is to control the temperature range of the battery within the range of 0-40 ℃, and the temperature difference level of the battery in the whole battery box body is controlled within 5 ℃;
from the heat transfer medium type that battery thermal management system used, current power battery thermal management system mainly can divide into: air-cooled thermal management (air cooling for short), liquid-cooled thermal management (liquid cooling for short), phase-change thermal storage thermal management and the like. From the perspective of three types of heat management modes, the air cooling device is simple and low in cost, is a main mode adopted by the industrialized electric automobile in the earlier stage, but needs to arrange an air pipeline in the cavity of the power battery to be communicated with the outside, and has the problem of poor wading safety; the phase-change heat storage type thermal management technology is still in a laboratory research stage at present, and a certain distance is left from practical application in view of the fact that the phase-change material has a low heat conductivity coefficient in a single phase; liquid cooling is the most widely applied technology in the current industrialized market, has higher heat transfer efficiency and better battery temperature homogenization performance, but has higher requirement on liquid sealing, complex heat exchange structure and higher cost. With the increasing demand for safe use of power batteries, liquid-cooled thermal management is becoming the main means of current and next generation research and development.
According to the flow direction of the liquid working medium in the heat exchanger in the battery box body module, two modes of serial flow and parallel flow are mainly adopted. Under the cooling working condition of the power battery flowing in series, the temperature of the liquid working medium gradually rises along with the flowing direction, the heat transfer temperature difference between the battery and the liquid working medium is gradually reduced, the heat exchange quantity obtained by the battery at the tail part of the flowing is gradually reduced, and correspondingly, the temperature of the battery is gradually increased, so that the temperature difference of the battery pack in the series flowing is larger. Compared with the serial flow, the parallel flow mode can overcome the defect and improve the temperature equalization performance of the battery pack.
However, the core of the parallel flow type thermal management structure design is to ensure that the flow in each channel is equal, but the existing parallel type inlet structure design usually causes poor flow distribution uniformity of the fluid working medium in the channel, and the temperature uniformity requirement of thermal management is seriously influenced. A journal article, "parallel flow Heat exchanger flow distribution uniformity study" (proceedings of Zhengzhou university of industry 2015, 36 (5): 53) indicates that the uniformity of fluid flow distribution at the parallel inlet is the worst. Therefore, how to effectively optimize the parallel runner structure, improve the fluid distribution uniformity and improve the temperature uniformity of the power battery pack is an urgent problem to be solved;
therefore, a temperature-equalizing distributed parallel micro flow channel heat exchanger and application thereof are provided.
Disclosure of Invention
The invention aims to solve the problems and provide a temperature-equalizing distributed parallel micro flow channel heat exchanger which is simple in structure and reasonable in design and an application thereof.
The invention realizes the purpose through the following technical scheme:
a temperature-equalizing distributed parallel micro flow channel heat exchanger comprises a liquid inlet flow dividing cavity, a parallel micro pipeline and a liquid outlet flow dividing cavity;
the parallel micro-pipelines are a plurality of pipe bundles with equal length difference, sequentially penetrate through the liquid inlet shunting cavity and the liquid outlet shunting cavity from long to short, and liquid heat exchange working media enter from the liquid inlet shunting cavity and sequentially flow through the parallel micro-pipelines with different lengths and then flow into the liquid outlet shunting cavity;
the liquid inlet shunting cavity and the liquid outlet shunting cavity are respectively provided with a shunting structure for improving the flow uniformity of the liquid heat exchange working medium flowing through each parallel micro-pipeline.
As a further optimization scheme of the invention, the liquid inlet shunting structure positioned in the liquid inlet shunting cavity comprises a liquid inlet shunting plate obliquely arranged in the liquid inlet shunting cavity, the liquid inlet shunting plate divides the liquid inlet shunting cavity into an inlet cavity and an inflow cavity, the cross sections of the inlet cavity and the inflow cavity are both in a right trapezoid shape, a liquid inlet is arranged on the narrower side of the inlet cavity, and the inlet cavity is a gradually expanding structure taking the liquid inlet as an inlet;
similarly, be located the reposition of redundant personnel structure of play liquid reposition of redundant personnel intracavity includes the play liquid flow distribution plate that sets up in a play liquid reposition of redundant personnel chamber slope, play liquid flow distribution plate will go out the liquid reposition of redundant personnel chamber and cut apart into the export chamber and the outflow chamber that the cross-sectional shape is right trapezoid, be equipped with the liquid outlet on the narrower limit of export chamber, the export chamber is with the convergent structure of liquid outlet as the export.
As a further optimized scheme of the invention, the liquid inlet and the liquid outlet are arranged on the same side of the parallel flow micro-channel heat exchanger.
As a further optimization scheme of the invention, the length of the extending part of the parallel micro-fine pipeline in the inflow cavity is gradually reduced from one side of the liquid inlet to the other side, and the length of the extending part of the parallel micro-fine pipeline in the outflow cavity is gradually reduced from one side of the liquid outlet to the other side.
As a further optimization scheme of the invention, the included angle between the connecting line of the extending end of the tail end of the same side of the parallel micro-pipeline in the inflow cavity or the outflow cavity and the horizontal line is 5-15 degrees.
As a further optimization scheme of the invention, the liquid inlet distribution holes and the liquid outlet distribution holes with the hole areas increasing in an equal ratio are arranged on the liquid inlet distribution plate and the liquid outlet distribution plate according to the direction that the extending lengths of the parallel micro-fine pipelines in the inflow cavity and the outflow cavity are reduced, and the positions of the liquid inlet distribution holes and the liquid outlet distribution holes correspond to the liquid inlet and outlet positions of each parallel micro-fine pipeline.
As a further optimization scheme of the invention, the incremental ratio of the hole areas of the liquid inlet shunting holes and the liquid outlet shunting holes on the liquid inlet shunting plate and the liquid outlet shunting plate is 1.1-1.5.
Use of a parallel flow micro flow channel heat exchanger as described above in the manufacture of a battery thermal management device.
The utility model provides a battery thermal management equipment, includes as above-mentioned the superfine runner heat exchanger of concurrent flow, cylinder battery and flexible heat conduction piece, the cylinder battery is two lines and arranges and set up on the superfine runner heat exchanger of concurrent flow, every four flexible heat conduction piece has all been inserted in the hollow body between the cylinder battery, each the vertical center department of flexible heat conduction piece corresponds and pegs graft mutually with each parallel fine pipeline of the superfine runner heat exchanger of concurrent flow.
As a further optimized scheme of the invention, the flexible heat conducting block is made of silicon rubber or foamed rubber material filled with alumina particles or mixed particles of alumina, magnesia and boron nitride.
The invention has the beneficial effects that:
1. the invention adopts the design of a novel liquid inlet shunting cavity and a novel liquid outlet shunting cavity, so that liquid heat exchange working medium enters the gradually-enlarged inlet cavity after passing through the liquid inlet, and enters the inflow cavity after flowing through liquid inlet shunting holes with different opening areas on the corresponding liquid inlet shunting plates, and then enters the liquid outlet shunting cavity after sequentially flowing through parallel micro pipelines with different lengths. Similarly, corresponding flow dividing structures are symmetrically arranged in the liquid outlet flow dividing cavity, so that the flowing resistance of the liquid heat exchange working medium flowing through each parallel micro-fine pipeline in the whole parallel flow micro-fine flow channel heat exchanger is the same, and the flow uniformity of the liquid heat exchange working medium flowing through each parallel micro-fine pipeline is finally improved.
2. The invention provides the application of the parallel flow micro-flow channel heat exchanger in the liquid cooling heat management of a cylindrical power battery, the heat of the power battery is rapidly transferred to the flexible heat-conducting block through the flexible heat-conducting block which is tightly contacted with the side wall of the cylindrical battery and a parallel micro-pipeline, the heat is rapidly transferred to the parallel micro-pipeline and a liquid heat exchange working medium flowing in the parallel micro-pipeline by utilizing the high-efficiency heat-conducting performance of the flexible heat-conducting block, the heat is rapidly taken away by the liquid heat exchange working medium, because the parallel flow micro-flow channel heat exchanger ensures the flow uniformity of the fluid heat exchange working medium in each parallel micro-pipeline, the flow speed is also equal under the same pipe diameter, the heat transferred by each parallel micro-pipeline is equal, the transfer and the release of the same heat of each single battery can be realized, thereby the temperature of the power battery is ensured to be highly consistent, the temperature equalizing performance of the whole power battery pack is improved.
Drawings
FIG. 1 is a perspective view of a parallel micro flow channel heat exchanger according to the present invention (the liquid inlet split-flow chamber is in a vertical mode);
FIG. 2 is a schematic view of the internal structure of FIG. 1;
FIG. 3 is a vertical mid-section perspective view of FIG. 2;
fig. 4 is a schematic structural diagram of a liquid inlet flow distribution plate provided by the invention;
FIG. 5 is a schematic view of a horizontal mode structure of the inlet distribution chamber of the present invention;
FIG. 6 is a perspective view of a battery thermal management module according to the present invention;
FIG. 7 is a perspective view of another embodiment of a battery thermal management module according to the present invention;
FIG. 8 is a schematic top plan view of the horizontal cross section of FIG. 6;
FIG. 9 is a schematic vertical cross-sectional elevation view of FIG. 6;
in the figure: 1. a liquid inlet flow dividing cavity; 11. a liquid inlet flow distribution plate; 12. an inflow chamber; 13. an inlet chamber; 14. a liquid inlet shunting hole; 15. a liquid inlet; 16. a through hole; 2. parallel micro-pipes; 3. a liquid outlet shunting cavity; 31. a liquid outlet flow distribution plate; 32. an outflow lumen; 33. an outlet chamber; 34. liquid outlet shunting holes; 35. a liquid outlet; 4. a cylindrical battery; 5. a flexible heat conducting block.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-5, a temperature-equalizing distributed parallel micro flow channel heat exchanger comprises a liquid inlet shunting cavity 1, a parallel micro pipeline 2 and a liquid outlet shunting cavity 3;
and the liquid inlet flow dividing cavity 1 and the liquid outlet flow dividing cavity 3 are internally provided with flow dividing structures for improving the flow uniformity of the liquid heat exchange working medium flowing through each parallel micro-fine pipeline 2.
The liquid inlet shunting cavity 1 is divided into an inlet cavity 13 and an inflow cavity 12, the cross sections of the inlet cavity 13 and the inflow cavity are both in a right trapezoid shape, the inlet cavity 13 is provided with a liquid inlet 15 on the narrower side, and the inlet cavity 13 is a gradually expanding structure taking the liquid inlet 15 as an inlet;
similarly, the liquid dividing structure in the liquid outlet dividing cavity 3 includes a liquid outlet dividing plate 31 obliquely arranged in the liquid outlet dividing cavity 3, the liquid outlet dividing plate 31 divides the liquid outlet dividing cavity 3 into an outlet cavity 33 and an outlet cavity 32, the cross sections of the outlet cavity 33 and the outlet cavity 32 are both in a right trapezoid shape, a liquid outlet 35 is arranged on a narrow side of the outlet cavity 33, and the outlet cavity 33 is a tapered structure taking the liquid outlet 35 as an outlet.
The liquid inlet 15 and the liquid outlet 35 are arranged on the same side of the parallel flow micro-channel heat exchanger.
The parallel micro-fine pipelines 2 are a plurality of tube bundles with equal length difference, in the embodiment, 4 tube bundles are adopted, and sequentially penetrate through the inflow cavity 12 and the outflow cavity 32 from long to short, the length of the extending part of the parallel micro-fine pipelines in the inflow cavity 12 is gradually reduced from one side of the liquid inlet 15 to the other side, the length of the extending part of the parallel micro-fine pipelines in the outflow cavity 32 is gradually reduced from one side of the liquid outlet 35 to the other side, as shown in fig. 2 and 3, the extending part is gradually reduced from the left side to the right side, and the included angle between the connecting line of the extending end of the same side end of the parallel micro-fine pipelines 2 in the inflow cavity 12 or the outflow cavity 32 and the horizontal line is further limited to 5-15 degrees.
On the liquid inlet flow distribution plate 11 and the liquid outlet flow distribution plate 31, liquid inlet flow distribution holes 14 and liquid outlet flow distribution holes 34 with the hole areas increasing in equal proportion are arranged according to the direction that the extension lengths of the parallel fine pipelines 2 in the inflow cavity 12 and the outflow cavity 32 decrease, and the positions of the liquid inlet flow distribution holes 14 and the liquid outlet flow distribution holes 34 correspond to the liquid inlet and outlet positions of each parallel fine pipeline 2, as shown in fig. 4.
The working principle of the parallel micro flow channel heat exchanger is that liquid heat exchange working media enter a gradually-enlarged inlet cavity 13 after passing through a liquid inlet 15, flow through liquid inlet shunting holes 14 with different opening areas on corresponding liquid inlet shunting plates 11 and then enter an inflow cavity 12, flow through parallel micro pipelines 2 with different lengths in sequence and then enter a liquid outlet shunting cavity 3, and similarly, corresponding shunting structures are symmetrically arranged in the liquid outlet shunting cavity 3, so that the flow resistance of the liquid heat exchange working media flowing through each parallel micro pipeline 2 in the whole parallel flow micro flow channel heat exchanger is the same, the flow uniformity of the liquid heat exchange working media flowing through each parallel micro pipeline 2 is finally improved, and the temperature uniformity requirement of heat management is ensured.
In addition, in this embodiment, only one circular hole is provided on the liquid inlet flow distribution plate 11 and the liquid outlet flow distribution plate 31 corresponding to each parallel fine duct 2, in actual operation, the shape of the hole may be other shapes, and the number of the holes may also be multiple, but it is only necessary to satisfy that the sum of the hole areas corresponding to each parallel fine duct 2 is in an equal ratio increasing relationship, and the increasing ratio range is 1.1-1.5.
In this embodiment, the liquid inlet and outlet branch chambers 1 and 3 of the radiator shown in fig. 1 to 3 are both vertical modes with height significantly greater than width;
if the liquid inlet shunting cavity 1 is a horizontal mode with the height obviously smaller than the width, the structure of the liquid inlet shunting cavity 1 is shown in fig. 5, and the liquid inlet shunting cavity is mainly different from the vertical mode in that the liquid inlet shunting cavity 1 is divided into an inflow cavity 12 and an inlet cavity 13 which are of a left-right structure instead of an upper-lower structure by a liquid inlet shunting plate 11, a through hole 16 is formed in the upper end face of the inflow cavity 12 for the parallel fine pipeline 2 to penetrate through, and the liquid outlet shunting cavity 3 in the horizontal mode is also designed to be vertically symmetrical with the liquid inlet shunting cavity 1 at the lower part.
If the liquid inlet shunting cavity 1 and the liquid outlet shunting cavity 3 of the parallel flow micro-flow channel heat exchanger both adopt a horizontal mode, the use space of the battery box body can be saved, and the liquid inlet shunting cavity 1 and the liquid outlet shunting cavity 3 can be considered to adopt the horizontal mode in the practical application process.
As shown in fig. 6 to 9, a battery heat management device mainly includes the parallel flow micro flow channel heat exchanger, cylindrical batteries 4 and flexible heat conducting blocks 5, wherein the cylindrical batteries 4 are arranged in two rows on the parallel flow micro flow channel heat exchanger, the flexible heat conducting blocks 5 are inserted into the hollow bodies between every four cylindrical batteries 4, and the vertical center of each flexible heat conducting block 5 is correspondingly inserted into each parallel micro duct 2 of the parallel flow micro flow channel heat exchanger.
The flexible heat conducting block 5 is made of silicon rubber or foamed rubber material filled with alumina particles or mixed particles of alumina, magnesia and boron nitride, has high heat conducting performance, is tightly contacted with the cylindrical batteries 4 around the flexible heat conducting block and the parallel micro-pipeline 2 at the center of the flexible heat conducting block, can quickly transfer heat transferred from the cylindrical batteries 4 to the parallel micro-pipeline 2, and can also transfer cooling media in the parallel micro-pipeline 2 to the cylindrical batteries 4.
The parallel flow micro-flow channel heat exchanger works in the thermal management of the battery, when the temperature of the cylindrical battery 4 is overhigh, starting the battery heat management system, enabling the low-temperature liquid heat exchange working medium to enter the parallel flow micro-flow channel heat exchanger, enters the divergent inlet cavity 13 after passing through the liquid inlet 15 and flows through the corresponding liquid inlet shunting holes 14 with different opening areas on the liquid inlet shunting plate 11, enters the inflow cavity 12, then flows through parallel micro pipelines 2 with different lengths uniformly and sequentially and enters the outflow shunting cavity 3, and flows through the outflow cavity 32, the outflow shunting hole 34 and the outlet cavity 33 in the outflow shunting cavity 3 in sequence and then flows out through the outflow port 35, because there is great heat transfer difference in temperature between the cylinder battery 4 of high temperature and the cryogenic liquid heat transfer working medium, the heat of power battery transmits rapidly for flexible heat conduction piece 5 to transmit for the liquid heat transfer working medium via parallel fine pipeline 2 and take away.
Because the parallel flow micro-flow channel heat exchanger ensures the flow uniformity of the fluid heat exchange working medium in each parallel micro-fine pipeline 2, the flow velocity is equal under the same pipe diameter, so that the heat transferred by each parallel micro-fine pipeline 2 is equal, the equal heat transfer and release of each single battery can be realized, the temperature high consistency of the power battery is ensured, and the temperature uniformity of the whole power battery pack is improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. The utility model provides a parallel fine flow channel heat exchanger of samming distributing type which characterized in that: comprises a liquid inlet flow-dividing cavity (1), a parallel micro-pipeline (2) and a liquid outlet flow-dividing cavity (3);
the parallel micro-fine pipelines (2) are a plurality of pipe bundles with equal length difference, and sequentially penetrate through the liquid inlet shunting cavity (1) and the liquid outlet shunting cavity (3) from long to short, and liquid heat exchange working medium enters from the liquid inlet shunting cavity (1), sequentially flows through the parallel micro-fine pipelines (2) with different lengths and then flows into the liquid outlet shunting cavity (3);
and the liquid inlet flow dividing cavity (1) and the liquid outlet flow dividing cavity (3) are internally provided with flow dividing structures for improving the flow uniformity of liquid heat exchange working medium flowing through each parallel fine pipeline (2).
2. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 1, wherein: the liquid inlet shunting cavity (1) is internally provided with a shunting structure, the shunting structure comprises a liquid inlet shunting plate (11) which is obliquely arranged in the liquid inlet shunting cavity (1), the liquid inlet shunting plate (11) divides the liquid inlet shunting cavity (1) into an inlet cavity (13) and an inflow cavity (12), the cross sections of the inlet cavity (1) are in right trapezoid shapes, a through hole (16) for the parallel fine pipeline (2) to penetrate through is formed in the inflow cavity (12), a liquid inlet (15) is formed in the narrow side of the inlet cavity (13), and the inlet cavity (13) is a gradually expanding structure taking the liquid inlet (15) as an inlet;
similarly, the liquid dividing structure in the liquid outlet dividing cavity (3) comprises a liquid outlet dividing plate (31) obliquely arranged in the liquid outlet dividing cavity (3), the liquid outlet dividing plate (31) divides the liquid outlet dividing cavity (3) into an outlet cavity (33) and an outlet cavity (32) with cross sections of right trapezoid shapes, a liquid outlet (35) is arranged on a narrow side of the outlet cavity (33), and the outlet cavity (33) is of a tapered structure taking the liquid outlet (35) as an outlet.
3. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 2, wherein: the liquid inlet (15) and the liquid outlet (35) are arranged on the same side of the parallel flow micro-channel heat exchanger.
4. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 2, wherein: the length of the extending part of the parallel micro-fine pipeline (2) in the inflow cavity (12) is gradually reduced from one side of the liquid inlet (15) to the other side, and the length of the extending part of the parallel micro-fine pipeline (2) in the outflow cavity (32) is gradually reduced from one side of the liquid outlet (35) to the other side.
5. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 4, wherein: the tail end of the same side of the parallel micro-pipeline (2) in the inflow cavity (12) or the outflow cavity (32) extends out of the end connecting line, and the included angle between the horizontal line and the tail end is 5-15 degrees.
6. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 2, wherein: on the liquid inlet flow distribution plate (11) and the liquid outlet flow distribution plate (31), liquid inlet flow distribution holes (14) and liquid outlet flow distribution holes (34) with the hole areas increasing in an equal ratio are arranged according to the direction that the extension lengths of the parallel fine pipelines (2) in the inflow cavity (12) and the outflow cavity (32) are reduced, and the positions of the liquid inlet flow distribution holes (14) and the liquid outlet flow distribution holes (34) correspond to the liquid inlet and outlet positions of each parallel fine pipeline (2).
7. The temperature-equalizing distributed parallel fine flow channel heat exchanger as claimed in claim 6, wherein: the incremental ratio of the hole areas of the liquid inlet shunting holes (14) and the liquid outlet shunting holes (34) on the liquid inlet shunting plate (11) and the liquid outlet shunting plate (31) is 1.1-1.5.
8. Use of a parallel flow micro flow channel heat exchanger as claimed in any one of claims 1 to 7 in the manufacture of a battery thermal management device.
9. A battery heat management device, comprising the parallel flow micro flow channel heat exchanger according to any one of claims 1 to 7, cylindrical batteries (4) and flexible heat conducting blocks (5), wherein the cylindrical batteries (4) are arranged in two rows on the parallel flow micro flow channel heat exchanger, the flexible heat conducting blocks (5) are inserted into the hollow bodies between every four cylindrical batteries (4), and the vertical center of each flexible heat conducting block (5) is correspondingly inserted into each parallel micro duct (2) of the parallel flow micro flow channel heat exchanger.
10. A battery heat management device according to claim 9, characterized in that the flexible heat conducting block (5) is made of silicone rubber or foamed rubber material filled with alumina particles or mixed particles of alumina, magnesia and boron nitride.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027510A1 (en) * | 2022-08-01 | 2024-02-08 | 南昌安亚数能科技有限公司 | Battery pack heat exchanger assembly and battery pack temperature equalization control method |
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