CN114725581A - Installation box, battery package and vehicle - Google Patents
Installation box, battery package and vehicle Download PDFInfo
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- CN114725581A CN114725581A CN202210328525.2A CN202210328525A CN114725581A CN 114725581 A CN114725581 A CN 114725581A CN 202210328525 A CN202210328525 A CN 202210328525A CN 114725581 A CN114725581 A CN 114725581A
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- 238000009434 installation Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 123
- 239000011550 stock solution Substances 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 11
- 210000005239 tubule Anatomy 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 42
- 230000001976 improved effect Effects 0.000 abstract description 15
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000001802 infusion Methods 0.000 abstract description 6
- 238000003908 quality control method Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 30
- 239000000110 cooling liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 8
- 230000001737 promoting effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008092 positive effect Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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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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- 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
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- 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 discloses an installation box, a battery pack and a vehicle, which solve the technical problems of untimely heat exchange and poor uniformity caused by complex and fussy temperature transmission chains in the prior art. At least one stock solution pipeline set up in the bottom plate of box, be equipped with a plurality of hydrojet holes along axial interval on the stock solution pipeline, the stock solution pipeline pass through a plurality of hydrojet holes with hold the chamber intercommunication. The connecting pipeline is communicated with the liquid inlet and the at least one liquid storage pipeline. The liquid storage pipeline required by cooling infusion is integrated on the bottom plate of the box body, so that the types of parts are reduced, and the strength of the lower box body can be improved to a certain degree; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result.
Description
Technical Field
The invention relates to the technical field of vehicle batteries, in particular to an installation box, a battery pack and a vehicle.
Background
The battery pack internal cooling assembly in the prior art generally comprises a liquid cooling plate 9 and a heat conducting pad 10, and as shown in fig. 1, a BMS (battery management system) controls a water pump to drive cooling liquid to flow in the liquid cooling plate 9, so that heat of the module is taken away. But harmonica pipe heat dissipation main part and the sealed requirement of peripheral collecting channel of liquid cooling board 9 are high, and the part is many moreover, and size and assembly control degree of difficulty are great, occupy the interior limited space of battery package seriously, increase weight.
Meanwhile, in the battery pack in the prior art, the cooling effect is not timely, the uniformity is poor, accurate temperature control is difficult to realize, the service life of the battery cell is more and more consistent, and the service life of the whole battery pack is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides an installation box, a battery pack and a vehicle, and solves the technical problems of untimely heat exchange and poor uniformity caused by complex and fussy temperature conduction chains in the prior art.
The technical purpose of the invention is realized by the scheme that the installation box comprises:
the box body is provided with an accommodating cavity for installing a heating component, and a liquid inlet and a liquid outlet which are communicated with the accommodating cavity;
the liquid storage pipeline is arranged on the bottom plate of the box body, a plurality of liquid spraying holes are formed in the liquid storage pipeline at intervals along the axial direction, and the liquid storage pipeline is communicated with the accommodating cavity through the liquid spraying holes;
and the connecting pipeline is communicated with the liquid inlet and the at least one liquid storage pipeline.
Further, the liquid storage pipeline is a circular pipe;
or the liquid storage pipeline comprises a first arc-shaped pipe piece and a second arc-shaped pipe piece which are fixedly connected, the first arc-shaped pipe piece and the second arc-shaped pipe piece surround a closed pipeline structure, and the first arc-shaped pipe piece is embedded in the bottom plate of the box body; the second arc-shaped pipe piece is oriented to the pipe piece bent by the bottom plate, and the second arc-shaped pipe piece is located in the accommodating cavity.
Furthermore, both sides of the second arc-shaped duct piece are provided with overlapping edges which are used for overlapping the upper surface of the bottom plate, and the overlapping edges extend out of the first arc-shaped duct piece.
Furthermore, the bottom plate is of a hollow structure, a plurality of partition plates are arranged in the bottom plate, and the inner cavity of the bottom plate is divided into a plurality of inner cavities by the partition plates;
the number of the partition plates is not less than that of the liquid storage pipelines; and along the axial direction of the liquid storage pipeline, the liquid storage pipeline is selectively arranged on at least one partition plate.
Further, the box body comprises an upper box body and a lower box body which are fixedly connected;
the bottom plate is located on the lower box body, the number of the liquid storage pipelines is more than two, and the more than two liquid storage pipelines are arranged at intervals along the length direction and/or the width direction of the bottom plate.
Further, the connecting pipeline comprises a main pipe and branch pipes, the main pipe is communicated with the liquid inlet, and the branch pipes are communicated with the liquid storage pipelines one by one.
Furthermore, the upper surface of the bottom plate is provided with a water absorption layer.
Based on the same inventive concept, the invention also provides a battery pack, comprising:
the installation box described above;
at least one module arranged in the accommodating cavity;
wherein the plurality of liquid spray holes of at least one liquid storage pipeline face the module.
Based on the same inventive concept, the present invention also provides a vehicle, including:
the battery pack described above;
circulation power subassembly, including power pump, heat exchanger and series connection intercommunication the power pump heat exchanger the inlet with the circulation pipeline of liquid outlet to make the medium be in stock solution pipeline the installation cavity with circulation is carried out outside the battery package.
Furthermore, the heat exchanger is provided with a plurality of flow channel tubules arranged in parallel, and a plurality of radiating fins are arranged on the outer surfaces of the flow channel tubules.
According to the technical scheme, the installation box provided by the invention comprises a box body, a connecting pipeline and at least one liquid storage pipeline, wherein the connecting pipeline comprises: wherein: the box body is provided with an accommodating cavity for installing a heating component, and a liquid inlet and a liquid outlet which are communicated with the accommodating cavity; the liquid storage pipeline is arranged on a bottom plate of the box body, a plurality of liquid spraying holes are formed in the liquid storage pipeline at intervals along the axial direction, and the liquid storage pipeline is communicated with the accommodating cavity through the liquid spraying holes; connecting tube intercommunication the inlet with at least one stock solution pipeline to the messenger cools off or heats the component that generates heat in the box when needs, heat transfer medium flows at connecting tube, stock solution pipeline and holding the intracavity through the inlet, flows through the liquid outlet at last, forms mobile heat transfer and dynamic cycle, realizes soaking formula direct contact heat transfer to the component that generates heat, and heat exchange is timely and even, and the shared space of pipeline distribution can effectively reduce, simplified the temperature conduction chain, is favorable to realizing accurate temperature control, and heat transfer fast and evenly. In addition, the liquid storage pipeline required by cooling infusion is integrated on the bottom plate of the box body, so that the types of parts are reduced, and the strength of the lower box body can be improved to a certain extent; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result.
According to the battery pack and the vehicle provided by the invention, the battery module is a heating component arranged in the accommodating cavity, the plurality of liquid spraying holes of at least one liquid storage pipeline face the module, so that a heat exchange medium can directly contact the module after being sprayed out through the liquid spraying holes, the module is quickly cooled, and the direct contact immersion type heat exchange mode has higher creative value and strong practicability. When being applied to battery package and vehicle with foretell install bin, equally have quick, the technological effect of even heat transfer, and then be favorable to guaranteeing the uniformity of electric core performance, avoided because of the huge difference in electric core life-span that the cooling inequality leads to, realize promoting battery system's life-span, to promoting heat transfer (cooling or heating) efficiency, promote the security of battery package, promote battery package energy density and electric core life-span and have very big positive effect.
Drawings
Fig. 1 is a schematic structural view of a cooling assembly and a battery pack in the prior art;
fig. 2 is a schematic view of an interior of an installation box and an assembly of a module according to embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional view of the mounting box of FIG. 2 taken along the width thereof;
FIG. 4 is a schematic cross-sectional view of the mounting box of FIG. 2 taken along the length thereof;
FIG. 5 is an enlarged partial schematic view of FIG. 4;
fig. 6 is a schematic view of connection between a battery pack and a circulation assembly in a vehicle according to embodiment 3 of the present invention;
fig. 7 is a schematic view of the structure of the heat exchanger in fig. 6.
Description of reference numerals: 1-an installation box, 11-a bottom plate, 12-a clapboard, 13-a liquid inlet, 14-a liquid outlet and 15-an inner cavity; 2-a liquid storage pipeline, 21-a liquid spraying hole, 22-a first arc-shaped pipe piece, 23-a second arc-shaped pipe piece and 24-a lap joint edge; 3-connecting a pipeline; 4-a water-absorbing layer; 5-module, 51-support plate; 6-a power pump; 7-heat exchanger, 71-runner tubule, 72-radiating fin; 8-a circulation pipeline; 9-liquid cooling plate; 10-heat conducting pad.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In the prior art, in order to realize heat transfer, such as cooling or heating, of devices inside a box body, a liquid cooling plate 9 is generally directly arranged in the box body, as shown in fig. 1, the basic assembly of the liquid cooling plate is composed of a harmonica pipe heat dissipation main body and a peripheral liquid collecting pipe, and the main connection mode adopts vacuum brazing and various sealing joints to ensure the sealing performance of the whole cooling system. But have the technical problem who occupies the inside limited space of box, increase weight, the component part of cooling plate is many moreover, and the size and the assembly control degree of difficulty are great, and the cooling effect is also relatively poor.
In order to solve the problems in the prior art, the invention provides the installation box 1, the battery pack and the vehicle, the structure for cooling is integrated with the installation box 1, the heat exchange mode is changed, and the timeliness and uniformity of heat exchange are ensured. The technical content of the invention is described in detail by three specific embodiments:
example 1
As shown in fig. 2 to fig. 5, the installation box 1 provided by the present embodiment includes a box body, a connecting pipe 3, and at least one liquid storage pipe 2: wherein: the box body is provided with a containing cavity for installing a heating component, and a liquid inlet 13 and a liquid outlet 14 which are communicated with the containing cavity; at least one liquid storage pipeline 2 is arranged on a bottom plate 11 of the box body, a plurality of liquid spraying holes 21 are formed in the liquid storage pipeline 2 at intervals along the axial direction, and the liquid storage pipeline 2 is communicated with the accommodating cavity through the plurality of liquid spraying holes 21; connecting tube 3 intercommunication inlet 13 and at least one stock solution pipeline 2, so that when the component that generates heat in the box needs to cool off or heat up, heat transfer medium flows at connecting tube 3 through inlet 13, stock solution pipeline 2 with hold the intracavity, flow through liquid outlet 14 at last, form mobile heat transfer and dynamic cycle, realize carrying out the heat transfer of soaking formula direct contact to the component that generates heat, heat exchange is timely and even, the shared space of pipeline distribution can effectively be reduced, the temperature conduction chain has been simplified, be favorable to realizing accurate temperature control, quick and evenly the heat transfer. In addition, the liquid storage pipeline 2 required by cooling infusion is integrated on the bottom plate 11 of the box body, so that the types of parts are reduced, and the strength of the lower box body can be improved to a certain degree; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result.
The cross-sectional shape of the liquid storage pipe 2 is not limited in the present invention, and may be circular, oval, square, etc., or even irregular, but in order to make the heat exchange medium more fluid in the accommodating cavity, preferably, the top surface of the liquid storage pipe 2 has a slope facing the bottom plate 11, i.e. the top of the liquid storage pipe 2 is not parallel to the bottom plate 11.
In a preferred embodiment, the liquid storage pipe 2 is a circular pipe. Or, the liquid storage pipeline 2 comprises a first arc-shaped pipe piece 22 and a second arc-shaped pipe piece 23 which are fixedly connected, the first arc-shaped pipe piece 22 and the second arc-shaped pipe piece 23 enclose a closed pipeline structure, and the first arc-shaped pipe piece 22 is embedded in the bottom plate 11 of the box body; the second arc-shaped pipe piece 23 is bent towards the bottom plate 11, and the second arc-shaped pipe piece 23 is positioned in the accommodating cavity, namely the upper surface of the liquid storage pipeline 2 is convex and is higher than the surface of the bottom plate 11, so that on one hand, the distance between the liquid outlet hole and the bottom surface of the heating component is reduced, and after being sprayed out from the hole, the cooling liquid can directly contact the heating component to be quickly cooled; on the other hand, the upper surface of the liquid cooling pipeline is arc-shaped, so that the cooling liquid can rapidly circulate along the arc-shaped surface to two sides, the flow speed is improved, and the cooling effect is improved.
It should be noted that, the structural design of a single liquid storage pipe 2 is referred to herein, when a plurality of liquid storage pipes 2 are involved, all the liquid storage pipes 2 may have the same structure, may have different structures, or may have the same structure, for example, a pipe structure partially formed by a circular pipe and partially formed by a first arc-shaped pipe piece 22 and a second arc-shaped pipe piece 23.
In order to enhance the guiding of the flow channel and ensure the conveying speed, in this embodiment, the arc angle of the first arc-shaped duct piece 22 is greater than 180 °, and both ends of the arc of the first arc-shaped duct piece 22 are higher than the upper surface of the bottom plate 11, so that the second arc-shaped duct piece 23 is completely located on the upper surface of the bottom plate 11.
In this embodiment, the cross-section of the liquid storage pipeline 2 is of an axisymmetric structure, and the arc vertex of the first arc-shaped segment 22 and the arc vertex of the second arc-shaped segment 23 are both located at the symmetric center.
In this embodiment, the opening position and the opening angle of the liquid ejecting hole 21 are not particularly limited, and may be designed as required. In a preferred embodiment, the liquid spray holes 21 penetrate in the radial direction of the second segment 23.
In order to facilitate the installation of the liquid storage pipeline 2 on the bottom plate 11 and ensure the connection strength and the overall strength of the installation box 1, in the embodiment, the two sides of the second arc-shaped duct piece 23 are provided with the overlapping edges 24 which are used for overlapping the upper surface of the bottom plate 11, the overlapping edges 24 extend out of the first arc-shaped duct piece 22, namely, the arc surface of the second arc-shaped duct piece 23 is connected with the two ends of the arc shape of the first arc-shaped duct piece 22 and then continuously extends outwards to form the overlapping edges 24 for connection and fixation.
In order to reduce the weight of the installation box 1 and improve the strength of the box body, in this embodiment, the bottom plate 11 is a hollow structure, a plurality of partition plates 12 are arranged in the bottom plate 11, and the inner cavity of the bottom plate 11 is divided into a plurality of inner cavities 15 by the plurality of partition plates 12. The number of the partition plates 12 is not less than that of the liquid storage pipelines 2; and along the axial of liquid storage pipeline 2, liquid storage pipeline 2 optionally sets up on at least one baffle 12, and in this embodiment, the second arc section of jurisdiction 23 part sinks to be located in the interior die cavity 15 of bottom plate 11 to by baffle 12 support, avoided concentrating the gravity of liquid storage pipeline 2 and apply to liquid storage pipeline 2 in the junction of bottom plate 11, made the comparatively dispersion of the power that bottom plate 11 received and even distribution, guaranteed the joint strength of junction.
In order to realize sealedly, avoid heat transfer medium to flow into interior cavity 15, in this embodiment, all around of stock solution pipeline 2 with bottom plate 11 sealing connection, can be supplementary through the sealing member, preferably, in this embodiment, overlap edge 24 of second arc section of jurisdiction 23 welds with the upper surface of bottom plate 11, two axle ends departments of stock solution pipeline 2 also weld with bottom plate 11 simultaneously.
The supporting manner of the partition plates 12 and the liquid storage pipe 2 is not particularly limited, and the partition plates 12 may be distributed at intervals along the axial direction of the liquid storage pipe 2, and the partitions 12 may have intersections or may not have intersections, and are supported by the partition plates 12 across the liquid storage pipe 2. Preferably, in this embodiment, the arrangement direction of at least some of the partition plates 12 is parallel to the axial direction of the liquid storage pipes 2, the liquid storage pipes 2 are arranged in parallel with one partition plate 12 one by one, and a generatrix where the vertex of the bottom of the second arc-shaped pipe piece 23 is located completely falls on the partition plate 12 and is directly contacted by the partition plate 12 for support.
The box body provided by the embodiment comprises an upper box body and a lower box body which are fixedly connected, so as to realize assembly and disassembly as in the prior art; the bottom plate 11 is located on the lower box, where the bottom plate 11 may be a part of the structure of the lower box itself, or may be a plate independently disposed on the lower box, and the present invention is not particularly limited. In order to simplify the structure, in the present embodiment, preferably, the bottom surface of the lower box is located in the box portion, which constitutes the bottom plate 11, i.e., the lower box itself in the present embodiment is a hollow structure.
In order to guarantee cooling rate and cooling effect, in this embodiment, the quantity of stock solution pipeline 2 is more than two, and stock solution pipeline 2 sets up along the length direction and/or the width direction interval of bottom plate 11 more than two, only need guarantee that stock solution pipeline 2 does not have between two liang alternately can, for example all stock solution pipelines 2 all set up along 11 length direction intervals of bottom plate, for example all stock solution pipelines 2 all set up along 11 width direction intervals of bottom plate again, or partial stock solution pipeline 2 sets up along 11 length direction intervals of bottom plate, partial stock solution pipeline 2 sets up along 11 width direction intervals of bottom plate, and the different stock solution pipeline 2 of two kinds of setting modes does not have crossing part.
For connecting oil inlet and each stock solution pipeline 2, in this embodiment, connecting tube 3 is responsible for and the branch pipe the same with 2 quantity of stock solution pipelines including the person in charge of the intercommunication, is responsible for intercommunication inlet 13, and the branch pipe communicates with stock solution pipeline 2 one by one.
In order to adapt to the shape of the matched accommodating cavity, the mounting box 1 provided by the invention has the branch pipe in a bent structure, and is provided with a first part parallel to the bottom plate 11 and a second part perpendicular to the bottom plate 11, wherein the first part is communicated with the second part, the first part is used for connecting the liquid storage pipeline 2, and the second part is used for connecting the main pipe. The present embodiment does not specifically limit the arrangement manner of the branch pipes, and the first portion may have a distance from the bottom plate 11, as an exemplary embodiment, the first portion is sunk on the bottom plate 11, and similarly, in order to prevent the heat exchange medium from entering the inner cavity 15, the first portion is welded with the bottom plate 11 to achieve a sealed connection.
In order to avoid splashing of a large amount of cooling liquid during vibration of the battery pack, in the embodiment, the water absorption layer 4 is arranged on the upper surface of the bottom plate 11 to separate the heating component from the bottom plate 11 and the liquid storage pipeline 2 arranged on the floor.
The structure and material of the water-absorbing layer 4 are not particularly limited in this embodiment, and as a preferred embodiment, the water-absorbing layer 4 is made of PU foam.
The heat exchange mode of the mounting groove is a soaking direct cooling type, so that the mounting groove has high creative value and strong practicability, and has great positive effects of improving the cooling efficiency and prolonging the service life of a heating component; the realization is to the component that generates heat carry out the formula direct contact heat transfer that soaks, and heat exchange is timely and even, and the shared space of pipeline distribution can effectively reduce, simplified the temperature conduction chain, is favorable to realizing accurate temperature control, and heat transfer fast and evenly. In addition, the liquid storage pipeline 2 required by cooling infusion is integrated on the bottom plate 11 of the box body, so that the cooling/heating function can be realized, the types of parts are reduced, and the strength of the lower box body can be improved to a certain degree; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result.
Example 2
Based on the same inventive concept, the embodiment further provides a battery pack, which comprises the installation box 1 provided by the embodiment 1 and at least one module 5 arranged in the accommodating cavity; wherein, 2 a plurality of hydrojet holes 21 of at least one stock solution pipeline are towards module 5 to make heat transfer medium can direct contact module 5 after 21 spouts of hydrojet hole, realize module 5's rapid cooling. When being applied to the battery package with install bin 1 among embodiment 1, equally have quick, the technological effect of even heat transfer, and then be favorable to guaranteeing the uniformity of electric core performance, avoided because of the huge difference in electric core life-span that the cooling inequality leads to, realize promoting battery system's life-span, to promoting heat transfer (cooling or heating) efficiency, promote the security of battery package, promote battery package energy density and electric core life-span and have very big positive effect.
In order to be the heat transfer medium that oil hydrojet hole 21 jetted and module 5 bottom surface direct contact, in this embodiment, module 5 length direction's both ends are provided with extension board 51 for with module 5 stable installation to the box in, make simultaneously have the interval between the bottom surface of module 5 and the upper surface of bottom plate 11 and the top surface of stock solution pipeline 2, at least partial stock solution pipeline 2 stretches into the direct space of module 5 and bottom plate 11.
In this embodiment, the length direction of the module 5 is the same as the length direction of the lower case. The arrangement and assembly of the module 5 are not specifically limited, and the module can be arranged side by side, in parallel, or in multiple rows and multiple columns, for example, in this embodiment, two columns of battery cells are arranged along the length direction of the module 5, and each column of battery cells is provided with 6 battery cells along the width direction of the module 5.
According to the battery pack provided by the embodiment, the liquid storage pipeline 2 required by cooling and infusion is integrated on the bottom plate 11 of the box body, so that the types of parts are reduced, and the strength of the lower box body can be improved to a certain extent; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result. The technical problems that in the prior art, the liquid cooling plate 9 occupies limited space in the battery pack, the weight is increased, and the size and the assembly control difficulty are large due to the fact that a plurality of parts are arranged are solved;
in the prior art, the liquid cooling plate 9 and the heat conducting pad are separated between the battery cell and the cooling liquid to influence the heat conducting efficiency, the temperature difference between the front and the back of the cooling pipeline is large, the improvement can be realized through self-circulation, but the accurate temperature control is difficult to realize due to the long temperature transmission chain, and the service life of the battery cell is inevitably longer and larger as a result, so that the service life of the whole battery pack is influenced. The battery package that this embodiment provided, heat transfer medium is at connecting tube 3 through inlet 13, liquid storage pipeline 2 with hold the intracavity and flow, flow through liquid outlet 14 at last, form mobile heat transfer and dynamic cycle, the realization is soaked formula direct contact heat transfer to the component that generates heat, heat exchange is timely and even, the shared space of pipeline distribution can effectively reduce, the temperature conduction chain has been simplified, be favorable to realizing accurate temperature control, quick and evenly heat transfer, the untimely and relatively poor technical problem of homogeneity of battery package cooling effect among the prior art has been solved.
Example 3
Based on the same inventive concept, the present embodiment also provides a vehicle including a circulating power assembly and the battery pack provided in embodiment 2, as shown in fig. 6 to 7. Wherein, circulation power component includes power pump 6, heat exchanger 7 and the circulation pipeline 8 of the series connection intercommunication power pump 6, heat exchanger 7, inlet 13 and liquid outlet 14 to make the medium circulate outside stock solution pipeline 2, installation cavity and battery package. Other structures of the vehicle are not improved in the embodiment, and other structures which are not described in detail can be referred to in the prior art.
When being applied to the vehicle with foretell battery package, equally have quick, the technological effect of even heat transfer, and then be favorable to guaranteeing the uniformity of electric core performance, avoided because of the huge difference in electric core life-span that the cooling inequality leads to, realize promoting battery system's life-span, to promoting heat transfer (cooling or heating) efficiency, promote the security of battery package, promote battery package energy density and electric core life-span and have very big positive effects.
In order to increase the heat exchange rate, in this embodiment, the heat exchanger 7 has a plurality of flow channel tubules 71 arranged in parallel, and a plurality of heat dissipation fins 72 are arranged on the outer surface of the flow channel tubules 71 to increase the heat exchange area, so as to perform heat exchange with the air conditioner compressor and the PTC, respectively, and thus, the coolant can be heated or cooled.
In this embodiment, adopt insulating fluorinated liquid as the coolant liquid, its specific heat capacity is only the third of liquid water, can realize the heat exchange fast, can automatic thermal equilibrium in the system when carrying out the heat exchange with electric core moreover, has still reduced the water pump energy consumption to a certain extent.
The working principle and the using method of the vehicle provided by the embodiment are as follows:
the temperature of electric core can real-time supervision by on-vehicle BMS, and when the temperature exceeded the warning line (for example 45 ℃) the work of start cooling system, and the system can realize that the temperature is even through coolant liquid self-loopa. The water is pumped into the liquid cooling pipeline through a circulating water pump 7 and enters the battery box body through the small hole on the upper outer convex pipe wall, and the module 5 is soaked and cooled; the connection end with the heat exchanger 7 can suck the cooling liquid in the lower box body, ensure that the cooling liquid forms a circulation and is subjected to heat exchange by the heat exchanger 7.
When the BMS detects that the temperature of the battery cell reaches an upper threshold value, the circulating water pump is started, the air-conditioning compressor is controlled to be started, and low-temperature circulating working media in the compressor enter the heat exchanger 7 to cool the cooling liquid; the battery pack heating process is similar to the battery pack heating process, namely, the PTC three-way valve is controlled to be opened through the BMS, the heated liquid heats the heat exchanger 7, then the temperature of the cooling liquid in the lower box body is raised, and finally the heat is transferred to the battery core.
Through the embodiment, the invention has the following beneficial effects or advantages:
1) the heat transfer medium flows in the connecting pipeline, the liquid storage pipeline and the containing cavity through the liquid inlet, and finally flows out through the liquid outlet to form flowing heat transfer and dynamic circulation, so that the heating component is immersed in direct contact for heat transfer, heat exchange is timely and uniform, the occupied space of pipeline distribution can be effectively reduced, a temperature conduction chain is simplified, accurate temperature control is facilitated, and heat transfer is fast and uniformly carried out. In addition, the liquid storage pipeline required by cooling infusion is integrated on the bottom plate of the box body, so that the types of parts are reduced, and the strength of the lower box body can be improved to a certain extent; the assembly degree of difficulty is low, thereby has reduced the sealing performance that the connector improved, reduces the quality control risk, has avoided sealed insulating and the power consumption safety problem of revealing the result.
2) When being applied to battery package and vehicle with foretell install bin, equally have quick, the technological effect of even heat transfer, and then be favorable to guaranteeing the uniformity of electric core performance, avoided because of the huge difference in electric core life-span that the cooling inequality leads to, realize promoting battery system's life-span, to promoting heat transfer (cooling or heating) efficiency, promote the security of battery package, promote battery package energy density and electric core life-span and have very big positive effect.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An installation case, comprising:
the box body is provided with an accommodating cavity for installing a heating component, and a liquid inlet and a liquid outlet which are communicated with the accommodating cavity;
the liquid storage pipeline is arranged on the bottom plate of the box body, a plurality of liquid spraying holes are formed in the liquid storage pipeline at intervals along the axial direction, and the liquid storage pipeline is communicated with the accommodating cavity through the liquid spraying holes;
and the connecting pipeline is communicated with the liquid inlet and the at least one liquid storage pipeline.
2. The mounting box of claim 1, wherein the reservoir conduit is a round tube;
or the liquid storage pipeline comprises a first arc-shaped pipe piece and a second arc-shaped pipe piece which are fixedly connected, the first arc-shaped pipe piece and the second arc-shaped pipe piece surround a closed pipeline structure, and the first arc-shaped pipe piece is embedded in a bottom plate of the box body; the second arc-shaped pipe piece is towards the pipe piece with the bent bottom plate, and the second arc-shaped pipe piece is located in the accommodating cavity.
3. The mounting box of claim 2 wherein said second arcuate duct piece is provided with overlapping edges on opposite sides for overlapping the upper surface of said floor, said overlapping edges extending beyond said first arcuate duct piece.
4. The mounting box of claim 1, wherein the bottom plate is a hollow structure, and a plurality of partition plates are arranged in the bottom plate, and divide an inner cavity of the bottom plate into a plurality of inner cavities;
the number of the partition plates is not less than that of the liquid storage pipelines; and along the axial direction of the liquid storage pipeline, the liquid storage pipeline is selectively arranged on at least one partition plate.
5. The mounting box of claim 1, wherein the box includes an upper box and a lower box fixedly connected;
the bottom plate is located on the lower box body, the number of the liquid storage pipelines is more than two, and the more than two liquid storage pipelines are arranged at intervals along the length direction and/or the width direction of the bottom plate.
6. The installation box of claim 5, wherein the connecting pipeline comprises a main pipeline and branch pipelines, the main pipeline is communicated with the liquid inlet, the branch pipelines are communicated with the liquid storage pipelines one by one, and the number of the branch pipelines is the same as that of the liquid storage pipelines.
7. A mounting box according to any one of claims 1-6, characterised in that the upper surface of the bottom plate is provided with a water-absorbing layer.
8. A battery pack, comprising:
the installation box of any one of claims 1-7;
at least one module arranged in the accommodating cavity;
wherein the plurality of liquid spray holes of at least one liquid storage pipeline face the module.
9. A vehicle, characterized by comprising:
the battery pack of claim 8;
circulation power subassembly, including power pump, heat exchanger and series connection intercommunication the power pump heat exchanger the inlet with the circulation pipeline of liquid outlet to make the medium be in stock solution pipeline the installation cavity with circulation is carried out outside the battery package.
10. The vehicle of claim 9, characterized in that the heat exchanger has a plurality of flow channel tubules arranged in parallel, and the outer surfaces of the flow channel tubules are provided with a plurality of heat radiating fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328525.2A CN114725581A (en) | 2022-03-31 | 2022-03-31 | Installation box, battery package and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328525.2A CN114725581A (en) | 2022-03-31 | 2022-03-31 | Installation box, battery package and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114725581A true CN114725581A (en) | 2022-07-08 |
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ID=82238945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210328525.2A Pending CN114725581A (en) | 2022-03-31 | 2022-03-31 | Installation box, battery package and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114725581A (en) |
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2022
- 2022-03-31 CN CN202210328525.2A patent/CN114725581A/en active Pending
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