CN108565489B - Heat conduction silica gel pad and battery module - Google Patents
Heat conduction silica gel pad and battery module Download PDFInfo
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- CN108565489B CN108565489B CN201810230251.7A CN201810230251A CN108565489B CN 108565489 B CN108565489 B CN 108565489B CN 201810230251 A CN201810230251 A CN 201810230251A CN 108565489 B CN108565489 B CN 108565489B
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- Prior art keywords
- silica gel
- gel pad
- heat
- holes
- pad
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000000741 silica gel Substances 0.000 title claims abstract description 206
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 206
- 230000007306 turnover Effects 0.000 claims abstract description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 28
- 239000004020 conductor Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 210000003734 kidney Anatomy 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
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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
- H01M10/04—Construction or manufacture in general
-
- 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
- H01M10/6554—Rods or plates
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- 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 provides a heat-conducting silica gel pad and a battery module, wherein the heat-conducting silica gel pad comprises a first silica gel pad, a second silica gel pad and a silica gel pad connecting part; the silica gel pad connecting part is fixedly connected with the first silica gel pad and the second silica gel pad respectively, so that the first silica gel pad can turn over relative to the second silica gel pad through the silica gel pad connecting part; a plurality of first holes are formed in the first side face of the first silica gel pad, a plurality of second holes are formed in the second side face of the second silica gel pad, the distribution condition and the size of the first holes are correspondingly matched with the heat distribution condition of a target object in contact with the first side face, and the distribution condition and the size of the second holes are correspondingly matched with the heat distribution condition of the target object in contact with the second side face. The heat-conducting silica gel pad can conduct targeted heat conduction treatment on a target object with temperature difference, so that the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged.
Description
Technical Field
The invention relates to the technical field of heat management, in particular to a heat-conducting silica gel pad and a battery module.
Background
With the rapid development of electronic technology, the use of pure electric vehicles or hybrid electric vehicles is becoming popular, and the requirements of the pure electric vehicles or hybrid electric vehicles on battery systems are also continuously improved, and the energy of the existing battery systems is derived from a battery module, and the battery module consists of a plurality of single batteries. For each single battery, a large amount of heat is generated in the charge and discharge process, and the total amount of the heat generated by different parts of each single battery is different, so that the single battery has temperature difference, and different areas in the battery module have different temperature difference conditions. Therefore, how to conduct heat conduction and dissipation treatment to each unit cell to maintain each unit cell in a temperature balance state is an extremely important problem for the battery module.
At present, an industry main stream generally arranges a smooth silica gel pad which is intact between a heat dissipation component and each single battery, and the heat dissipation component is used for heat dissipation treatment of each single battery in a mode that the smooth silica gel pad conducts heat uniformly to each part of the single battery. However, the smooth silica gel pad in the heat conduction and radiation scheme cannot eliminate the problem that the single battery, the battery module and even the whole battery system have larger temperature difference, so that the service life of the single battery is not long.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a heat-conducting silica gel pad and a battery module, wherein the heat-conducting silica gel pad can conduct targeted heat conduction treatment on a target object with temperature difference, so that the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged.
In terms of a heat-conducting silica gel pad, an embodiment of the present invention provides a heat-conducting silica gel pad, which includes a first silica gel pad, a second silica gel pad, and a silica gel pad connection portion;
one side of the silica gel pad connecting part is fixedly connected with the first silica gel pad, and the other side of the silica gel pad connecting part opposite to the first silica gel pad is fixedly connected with the second silica gel pad, so that the first silica gel pad can turn over relative to the second silica gel pad through the silica gel pad connecting part;
a plurality of first holes are formed in the first side face of the first silica gel pad, a plurality of second holes are formed in the second side face of the second silica gel pad, the distribution condition and the size of the first holes on the first silica gel pad are correspondingly matched with the heat distribution condition of a target object in contact with the first side face, and the distribution condition and the size of the second holes on the second silica gel pad are correspondingly matched with the heat distribution condition of the target object in contact with the second side face.
Further, in the embodiment of the present invention, the corresponding orientations of the first side surface and the second side surface deviate from each other when the first silica gel pad is turned over relative to the second silica gel pad.
Further, in an embodiment of the present invention, a plurality of first serrations are provided on the first side at equal intervals, and the first side is spaced apart from the plurality of first serrations to be in contact with a corresponding target object;
a plurality of second sawteeth are arranged on the second side face of the second silica gel pad at equal intervals, and the second side face is used for enabling the plurality of second sawteeth to be in contact with a corresponding target object at intervals.
Further, in an embodiment of the present invention, the first saw teeth are obliquely disposed on the first side surface and extend in a direction away from the connection portion of the silica gel pad;
the second saw teeth are obliquely arranged on the second side surface and extend in a direction away from the silica gel pad connecting part.
Further, in an embodiment of the present invention, the shape of the first hole includes any one or a combination of a plurality of triangle, circle, square, ellipse, kidney-shaped hole;
the shape of the second hole comprises any one or more of triangle, circle, square, ellipse and kidney-shaped hole.
Further, in the embodiment of the invention, a part of the first holes and a part of the second holes are correspondingly filled with a heat conducting material, and the heat conducting material comprises at least one of heat conducting silicone grease, heat conducting insulating pouring sealant, graphene and foam metal.
In terms of a module, the embodiment of the invention provides a battery module, which comprises a plurality of single batteries, a liquid cooling flat tube and at least one heat conduction silica gel pad;
the liquid cooling flat tube comprises a plurality of sub flat tubes and at least one bending connecting part, wherein the sub flat tubes are arranged at intervals, an accommodating space for accommodating a single battery is formed between two adjacent sub flat tubes, and the two adjacent sub flat tubes are communicated through the bending connecting part;
each heat-conducting silica gel pad is correspondingly bent to clamp one sub flat tube and is mutually attached to the sub flat tube;
the plurality of single batteries are respectively accommodated in each accommodating space and are contacted with the heat-conducting silica gel pad of the corresponding flat tube in a clamping manner, so that the liquid-cooling flat tube is separated by the heat-conducting silica gel pad to radiate the plurality of single batteries.
Further, in the embodiment of the invention, each heat-conducting silica gel pad is bent through a silica gel pad connecting part, and the matched sub flat tube is clamped through a first silica gel pad and a second silica gel pad which are fixedly connected with the silica gel pad connecting part.
Further, in the embodiment of the present invention, the number of the heat-conducting silica gel pads is the same as the number of the sub flat tubes, a side surface opposite to the first side surface on a first silica gel pad in the heat-conducting silica gel pads corresponding to each sub flat tube is attached to one side surface of the sub flat tube, and a side surface opposite to the second side surface on a second silica gel pad in the heat-conducting silica gel pads is attached to the other side surface of the sub flat tube.
Further, in the embodiment of the invention, the single battery accommodated in each accommodating space is contacted with the first side surface or the second side surface of the heat-conducting silica gel pad arranged on the sub flat tube forming the accommodating space.
Compared with the prior art, the heat-conducting silica gel pad and the battery module provided by the embodiment of the invention have the following beneficial effects: the heat-conducting silica gel pad can conduct targeted heat conduction treatment on a target object with temperature difference, so that the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged. The heat-conducting silica gel pad comprises a first silica gel pad, a second silica gel pad and a silica gel pad connecting part; one side of the silica gel pad connecting part is fixedly connected with the first silica gel pad, and the opposite side of the silica gel pad connecting part is fixedly connected with the second silica gel pad, so that the first silica gel pad can turn over relative to the second silica gel pad through the silica gel pad connecting part. A plurality of first holes are formed in the first side face of the first silica gel pad, a plurality of second holes are formed in the second side face of the second silica gel pad, the distribution condition and the size of the first holes on the first silica gel pad are correspondingly matched with the heat distribution condition of a target object in contact with the first side face, and the distribution condition and the size of the second holes on the second silica gel pad are correspondingly matched with the heat distribution condition of the target object in contact with the second side face. The first holes can ensure that the contact areas of the first silica gel pad and the corresponding target object can conduct heat to different degrees on different parts of the corresponding target object, the second holes can ensure that the contact areas of the second silica gel pad and the corresponding target object can conduct heat to different degrees on different parts of the target object, so that the problem of large temperature difference on the target object with temperature difference is solved, the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope of the claims of the present invention, and that other related drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a thermal conductive silica gel pad according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of section i of fig. 1.
Fig. 3 is a second schematic structural diagram of a thermal conductive silica gel pad according to an embodiment of the present invention.
Fig. 4 is an enlarged schematic view of the portion ii in fig. 3.
Fig. 5 is a schematic structural view of a battery module according to an embodiment of the present invention.
Fig. 6 is an assembled schematic diagram of the single battery, the heat-conducting silica gel pad and the liquid-cooled flat tube in fig. 5.
Fig. 7 is an enlarged schematic view of the portion iii in fig. 6.
Icon: 10-a battery module; 100-a heat-conducting silica gel pad; 110-a first silicone pad; 120-a second silica gel pad; 130-a silica gel pad connection; 111-a first side; 112-a first hole; 113-first serrations; 121-a second side; 122-a second hole; 123-second serrations; 11-liquid cooling flat tube; 101-flattening the tube; 102-bending the connecting part; 12-single battery.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic structural diagram of a thermal conductive silica gel pad 100 according to an embodiment of the present invention, and fig. 2 is an enlarged schematic diagram of an i portion in fig. 1. In the embodiment of the present invention, the thermal conductive silica gel pad 100 can perform targeted thermal conductive treatment on a target object with a temperature difference, so that each part of the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged. The thermal conductive silica gel pad 100 includes a first silica gel pad 110, a second silica gel pad 120, and a silica gel pad connection portion 130.
In this embodiment, the first silica gel pad 110 and the second silica gel pad 120 are both in a cuboid structure, and the first silica gel pad 110 is connected with the second silica gel pad 120 through the silica gel pad connection portion 130.
Optionally, the silica gel pad connecting portion 130 is also in a cuboid structure, one side of the silica gel pad connecting portion 130 is fixedly connected with the first silica gel pad 110, the opposite side of the silica gel pad connecting portion 130 is fixedly connected with the second silica gel pad 120, the lateral dimensions of the silica gel pad connecting portion 130 and the first silica gel pad 110 are mutually matched with those of the first silica gel pad 110, and the lateral dimensions of the silica gel pad connecting portion 130 and the second silica gel pad 120 are mutually matched with those of the second silica gel pad 120.
In this embodiment, the material corresponding to the silica gel pad connection portion 130 is a flexible material, and the first silica gel pad 110 may be turned over relative to the second silica gel pad 120 by bending the silica gel pad connection portion 130. When the first silica gel pad 110 and the second silica gel pad 120 are not turned over, they may be on the same plane, or may be disposed at an angle, and the value range of the angle is 0 ° to 180 °.
In this embodiment, the first silica gel pad 110 includes a first side 111, a plurality of first holes 112 are formed in the first side 111, and when the first silica gel pad 110 contacts a target object, the contact areas of the first silica gel pad 110 with each portion of the target object can be adjusted according to the distribution of the plurality of first holes 112, so as to implement heat conduction treatment on different portions of the target object to different extents. Wherein a portion of the first holes 112 of the plurality of first holes 112 may be filled with a thermally conductive material to enhance the thermally conductive effect of the first silicone pad 110 at a corresponding location.
In this embodiment, the distribution and the size of the first holes 112 on the first silica gel pad 110 are correspondingly matched with the heat distribution of the target object contacted by the first side 111. Optionally, if the plurality of first holes 112 are not filled with the heat conducting material, the fewer the number of the first holes 112 near the heat concentration area of the target object is, the smaller the distribution density is, and the smaller the size of the corresponding first holes 112 is, so as to increase the contact area between the first silica gel pad 110 and the heat concentration area of the target object, and improve the heat conducting efficiency and the heat conducting effect; if the first holes 112 are filled with a heat-conducting material, the distribution density is greater as the number of the first holes 112 close to the heat concentration area of the target object is greater, and the size of the corresponding first holes 112 is greater, so that the heat-conducting efficiency and the heat-conducting effect of the first silica gel pad 110 on the heat concentration area of the target object are increased by the heat-conducting material in the first holes 112. The heat conducting materials correspondingly filled in the first holes 112 include at least one of heat conducting silicone grease, heat conducting insulating pouring sealant, graphene and foam metal, and the heat conducting materials filled in different first holes 112 can be set differently according to requirements, so that the contact areas between the first silica gel pads 110 and corresponding target objects can ensure that heat conduction is conducted to different parts of the corresponding target objects to different degrees, the problem of large temperature difference between the corresponding target objects with temperature difference is solved, the corresponding target objects are maintained in a temperature balance state, and the service life of the target objects is prolonged.
Similar to the first silica gel pad 110, the second silica gel pad 120 includes a second side 121, a plurality of second holes 122 are formed in the second side 121, and when the second silica gel pad 120 contacts a target object, the contact area between the second silica gel pad 120 and each part of the target object can be adjusted according to the distribution of the second holes 122, so as to implement heat conduction treatment on different parts of the target object in different degrees. Wherein a portion of the second holes 122 of the plurality of second holes 122 may be filled with a thermally conductive material to enhance the thermally conductive effect of the second silicone pad 120 at the corresponding location.
In this embodiment, the distribution and the size of the second holes 122 on the second silica gel pad 120 are correspondingly matched with the heat distribution of the target object contacted by the second side 121. The specific distribution and size of the second holes 122 are described above with reference to the first holes 112, which is not discussed herein. The heat conducting material filled in the second hole 122 includes at least one of heat conducting silicone grease, heat conducting insulating pouring sealant, graphene and foam metal, and the heat conducting materials filled in different second holes 122 can be set differently according to requirements, so that the contact area between the second silica gel pad 120 and the corresponding target object can ensure that heat conduction is conducted to different parts of the corresponding target object to different degrees, and the problem of large temperature difference between the corresponding target object with temperature difference is eliminated, so that the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged.
In this embodiment, the respective corresponding orientations of the first side 111 and the second side 121 deviate from each other when the first silica gel pad 110 is turned over relative to the second silica gel pad 120, that is, the first side 111 and the second side 121 are not disposed opposite to each other.
In this embodiment, the first holes 112 may be all through holes, blind holes, or through holes and blind holes; the second holes 122 may be all through holes, blind holes, or through holes and blind holes.
In this embodiment, the shapes of the plurality of first holes 112 include any one or more combinations of triangle, circle, square, ellipse, and kidney-shaped hole, that is, the shapes of the plurality of first holes 112 may be any one of triangle, circle, square, ellipse, and kidney-shaped hole, or may be formed by mixing a plurality of shapes of triangle, circle, square, ellipse, and kidney-shaped hole; the shapes of the second holes 122 include any one or more combinations of triangle, circle, square, ellipse, and kidney-shaped hole, that is, the shapes of the second holes 122 may be any one of triangle, circle, square, ellipse, and kidney-shaped hole, or may be mixed with any one of triangle, circle, square, ellipse, and kidney-shaped hole.
Referring to fig. 3 and 4, fig. 3 is a second schematic structural diagram of the thermal pad 100 according to the embodiment of the invention, and fig. 4 is an enlarged schematic diagram of a portion ii in fig. 3. In an embodiment of the present invention, the thermal conductive silica gel pad 100 may further be provided with a plurality of saw-tooth structures, so that the thermal conductive silica gel pad 100 contacts with a target object when contacting with the target object.
Alternatively, a plurality of first serrations 113 are provided on the first side 111 at equal intervals, and the first side 111 is in contact with a corresponding target object at intervals of the plurality of first serrations 113; a plurality of second serrations 123 are provided on the second side 121 of the second silica gel pad 120 at equal intervals, and the second side 121 is contacted with a corresponding target object at the plurality of second serrations 123. Wherein the first saw teeth 113 are obliquely disposed on the first side 111 and extend in a direction away from the silica gel pad connection part 130; the second saw teeth 123 are obliquely disposed on the second side 121 and extend in a direction away from the silicone pad connection part 130.
In this embodiment, the first saw teeth 113 and the plurality of first holes 112 may be staggered with each other, or may be covered, that is, the first holes 112 are disposed at positions corresponding to the first saw teeth 113; the second saw teeth 123 and the plurality of second holes 122 may be staggered with each other, or may be covered, that is, the second holes 122 are disposed at positions corresponding to the second saw teeth 123.
Referring to fig. 5, fig. 6 and fig. 7 in combination, fig. 5 is a schematic structural diagram of a battery module 10 according to an embodiment of the invention, fig. 6 is an assembled schematic diagram of a unit cell 12, a heat-conducting silicone rubber pad 100 and a liquid-cooled flat tube 11 in fig. 5, and fig. 7 is an enlarged schematic diagram of a portion iii in fig. 6. In the embodiment of the present invention, the thermal-conductive silica gel pad 100 may be applied to the battery module 10, and is used for conducting heat to the unit cells 12 in the battery module 10, so that each unit cell 12 in the battery module 10 is maintained in a temperature balance state, and the service life of the battery module 10 is improved.
In this embodiment, the battery module 10 includes a plurality of unit batteries 12, a liquid cooling flat tube 11, and any one of the heat-conducting silica gel pads 100 shown in fig. 1 and 3, wherein the number of the heat-conducting silica gel pads 100 is at least one.
In this embodiment, the plurality of unit cells 12 may be divided into a plurality of sub-modules, each sub-module includes a plurality of unit cells 12, and the liquid cooling flat tube 11 is diffracted between the plurality of sub-modules. Optionally, the liquid cooling flat tube 11 includes a plurality of sub flat tubes 101 and at least one bending connection portion 102, the plurality of sub flat tubes 101 are disposed at intervals, an accommodating space for accommodating the unit battery 12 is formed between two adjacent sub flat tubes 101, the two adjacent sub flat tubes 101 are communicated through the bending connection portion 102, and the sub flat tubes 101 and the bending connection portion 102 which are mutually communicated are used for cooling liquid circulation, so as to realize heat dissipation.
In this embodiment, each heat-conducting silica gel pad 100 is correspondingly bent to clamp one sub-flat tube 101, and is attached to the corresponding sub-flat tube 101, and each accommodating space can accommodate at least one sub-module, i.e. a plurality of unit batteries 12, and is in contact with the heat-conducting silica gel pad 100 on the sub-flat tube 101 corresponding to the accommodating space accommodating the corresponding unit battery 12, so that the liquid-cooling flat tube 11 separates the heat-conducting silica gel pad 100 to perform heat dissipation treatment on the plurality of unit batteries 12.
The axial direction of the single battery 12 is perpendicular to the extending direction of the corresponding flat sub-tube 101. The heating value of the middle area of each unit cell 12 in the axial direction is greater than that of the two electrode ends, if the first holes 112 and the second holes 122 of the heat-conducting silica gel pad 100 are not filled with heat-conducting materials, the distribution conditions of the first holes 112 and the second holes 122 in the area of the heat-conducting silica gel pad 100 corresponding to the unit cell 12 are as follows: the greater the open cell density in the middle of the cell 12, the greater the corresponding open cell size; if the first holes 112 and the second holes 122 of the thermal-conductive silica gel pad 100 are filled with the thermal-conductive material, the distribution of the first holes 112 and the second holes 122 in the region of the thermal-conductive silica gel pad 100 corresponding to the unit cells 12 is as follows: the smaller the aperture density is at the center of the cell 12, the smaller the corresponding aperture size is.
For the battery module 10, if the temperature of the water inlet of the liquid cooling flat tube 11 is lower than the temperature of the water outlet, the first holes 112 and the second holes 122 of the heat conducting silica gel pad 100 are not filled with the heat conducting material, and the distribution of the first holes 112 and the second holes 122 in the region of the heat conducting silica gel pad 100 corresponding to the corresponding sub flat tube 101 is as follows: the farther the ion flat tube 101 is, the smaller the opening density of the water inlet is, and the smaller the corresponding opening size is; if the first holes 112 and the second holes 122 of the thermal-conductive silica gel pad 100 are filled with the thermal-conductive material, the distribution conditions of the first holes 112 and the second holes 122 in the region of the thermal-conductive silica gel pad 100 corresponding to the corresponding sub-flat tube 101 are: the further away the ion flat tube 101 the greater the open cell density of the water inlet, the greater the corresponding open cell size.
The heat productivity of each unit cell 12 in the battery module 10 is different, and for the heat-conducting silica gel pad 100 which is not filled with the heat-conducting material after the opening, the opening density of the heat-conducting silica gel pad 100 with larger heat productivity is smaller as the heat-conducting silica gel pad 100 is closer to the opening; for the thermal silica gel pad 100 filled with the thermal conductive material after the opening, the closer to the thermal silica gel pad 100 having a large heat generation amount, the greater the opening density. Each of the thermal conductive silica gel pads 100 may be manufactured using silica gel corresponding to different thermal conductivity coefficients, so that the thermal conductive silica gel pad 100 in the battery module 10 has a capability of distributing thermal conductivity.
In this embodiment, each of the heat-conducting silica gel pads 100 clamps the matched sub-flat tube 101 by bending the corresponding silica gel pad connection portion 130, so that the first silica gel pad 110 and the second silica gel pad 120 fixedly connected with the silica gel pad connection portion 130. The sides of the first silica gel pad 110 and the second silica gel pad 120, which are clamped and attached to the corresponding sub flat tube 101, are sides without saw tooth structures.
Optionally, the number of the heat-conducting silica gel pads 100 in the battery module 10 is the same as the number of the sub flat tubes 101, a side surface opposite to the first side surface 111 on the first silica gel pad 110 in the heat-conducting silica gel pad 100 corresponding to each sub flat tube 101 is attached to one side surface of the sub flat tube 101, and a side surface opposite to the second side surface 121 on the second silica gel pad 120 in the heat-conducting silica gel pad 100 is attached to the other side surface of the sub flat tube 101. Wherein, the corresponding orientations of the two sides of the sub flat tube 101 deviate from each other.
In the present embodiment, each accommodation space, when accommodating a single cell 12, the single cell 12 will be in contact with at least one of the two sub flat tubes 101 forming the accommodation space via the thermal conductive silicone pad 100, wherein the single cell 12 will be in contact with the first side 111 of the first silicone pad 110 or the second side 121 of the second silicone pad 120 in the thermal conductive silicone pad 100.
In summary, in the thermally conductive silica gel pad and the battery module provided by the embodiments of the present invention, the thermally conductive silica gel pad includes a first silica gel pad, a second silica gel pad, and a silica gel pad connection portion; one side of the silica gel pad connecting part is fixedly connected with the first silica gel pad, and the opposite side of the silica gel pad connecting part is fixedly connected with the second silica gel pad, so that the first silica gel pad can turn over relative to the second silica gel pad through the silica gel pad connecting part. A plurality of first holes are formed in the first side face of the first silica gel pad, a plurality of second holes are formed in the second side face of the second silica gel pad, the distribution condition and the size of the first holes on the first silica gel pad are correspondingly matched with the heat distribution condition of a target object in contact with the first side face, and the distribution condition and the size of the second holes on the second silica gel pad are correspondingly matched with the heat distribution condition of the target object in contact with the second side face. The first holes can ensure that the contact areas of the first silica gel pad and the corresponding target object can conduct heat to different degrees on different parts of the corresponding target object, the second holes can ensure that the contact areas of the second silica gel pad and the corresponding target object can conduct heat to different degrees on different parts of the target object, so that the problem of large temperature difference on the target object with temperature difference is solved, the corresponding target object is maintained in a temperature balance state, and the service life of the target object is prolonged.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The heat-conducting silica gel pad is characterized by comprising a first silica gel pad, a second silica gel pad and a silica gel pad connecting part;
one side of the silica gel pad connecting part is fixedly connected with the first silica gel pad, and the other side of the silica gel pad connecting part opposite to the first silica gel pad is fixedly connected with the second silica gel pad, so that the first silica gel pad can turn over relative to the second silica gel pad through the silica gel pad connecting part;
a plurality of first holes are formed in a first side face of the first silica gel pad, a plurality of second holes are formed in a second side face of the second silica gel pad, the distribution condition and the size of the first holes on the first silica gel pad are correspondingly matched with the heat distribution condition of a target object contacted with the first side face, and the distribution condition and the size of the second holes on the second silica gel pad are correspondingly matched with the heat distribution condition of the target object contacted with the second side face;
the corresponding directions of the first side surface and the second side surface deviate from each other when the first silica gel pad is turned over relative to the second silica gel pad;
a part of the first holes and a part of the second holes are correspondingly filled with heat conducting materials, and the heat conducting materials comprise at least one of heat conducting silicone grease, heat conducting insulating pouring sealant, graphene and foam metal;
when the first holes are not filled with the heat conducting material, the distribution density of the first holes close to the heat concentration area of the target object is smaller, the corresponding first holes are smaller, and when the first holes are filled with the heat conducting material, the distribution density of the first holes close to the heat concentration area of the target object is larger, the corresponding first holes are larger;
when the second holes are not filled with the heat conducting material, the distribution density of the second holes close to the heat concentration area of the target object is smaller, the size of the corresponding second holes is smaller, and when the second holes are filled with the heat conducting material, the distribution density of the second holes close to the heat concentration area of the target object is larger, the size of the corresponding second holes is larger.
2. The thermally conductive silicone pad of claim 1, wherein the first side is provided with a plurality of first serrations equally spaced therefrom, the first side being spaced apart from the plurality of first serrations for contact with a corresponding target object;
a plurality of second sawteeth are arranged on the second side face of the second silica gel pad at equal intervals, and the second side face is used for enabling the plurality of second sawteeth to be in contact with a corresponding target object at intervals.
3. The thermally conductive silicone pad of claim 2, wherein the first serrations are disposed obliquely on the first side and extend in a direction away from the silicone pad connection;
the second saw teeth are obliquely arranged on the second side surface and extend in a direction away from the silica gel pad connecting part.
4. A thermally conductive silicone pad as set forth in any one of claims 1-3 wherein the shape of said first aperture comprises any one or a combination of triangular, circular, square, oval, kidney aperture shapes;
the shape of the second hole comprises any one or more of triangle, circle, square, ellipse and kidney-shaped hole.
5. A battery module comprising a plurality of single cells, a liquid cooled flat tube and at least one thermally conductive silicone pad of any one of claims 1-4;
the liquid cooling flat tube comprises a plurality of sub flat tubes and at least one bending connecting part, wherein the sub flat tubes are arranged at intervals, an accommodating space for accommodating a single battery is formed between two adjacent sub flat tubes, and the two adjacent sub flat tubes are communicated through the bending connecting part;
each heat-conducting silica gel pad is correspondingly bent to clamp one sub flat tube and is mutually attached to the sub flat tube;
the plurality of single batteries are respectively accommodated in each accommodating space and are contacted with the heat-conducting silica gel pad of the corresponding flat tube in a clamping manner, so that the liquid-cooling flat tube is separated by the heat-conducting silica gel pad to radiate the plurality of single batteries.
6. The battery module of claim 5, wherein each thermally conductive silicone pad is bent through a silicone pad connection, and the matched sub-flat tube is clamped through a first silicone pad and a second silicone pad fixedly connected with the silicone pad connection.
7. The battery module of claim 6, wherein the number of the heat-conducting silicone pads is the same as the number of the sub-flat tubes, a side surface opposite to the first side surface on a first silicone pad in the heat-conducting silicone pads corresponding to each sub-flat tube is attached to one side surface of the sub-flat tube, and a side surface opposite to the second side surface on a second silicone pad in the heat-conducting silicone pads is attached to the other side surface of the sub-flat tube.
8. The battery module according to any one of claims 5 to 7, wherein the unit cells received in each receiving space are in contact with a first side or a second side of a thermally conductive silicone pad provided on a sub-flat tube forming the receiving space.
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| CN110517996A (en) * | 2019-09-04 | 2019-11-29 | 成都天玙兴科技有限公司 | A kind of heat-conducting silica gel sheet and preparation method thereof, application |
| CN112310011A (en) * | 2020-02-05 | 2021-02-02 | 北京字节跳动网络技术有限公司 | Heat conduction device, chip and electronic equipment |
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