CN213425066U - Battery heat management device based on composite heat dissipation material and liquid cooling - Google Patents
Battery heat management device based on composite heat dissipation material and liquid cooling Download PDFInfo
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- CN213425066U CN213425066U CN202022185484.5U CN202022185484U CN213425066U CN 213425066 U CN213425066 U CN 213425066U CN 202022185484 U CN202022185484 U CN 202022185484U CN 213425066 U CN213425066 U CN 213425066U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application discloses a battery thermal management device based on a composite heat dissipation material and liquid cooling, which comprises a composite heat dissipation assembly and a liquid cooling assembly; the composite heat dissipation assembly comprises a composite heat dissipation main body and an encapsulating adhesive layer; the composite heat dissipation main body is provided with a plurality of heat conduction holes for embedding the single batteries; the potting adhesive layer is attached to the outer side wall of the composite material main body; the liquid cooling assembly comprises a liquid cooling plate and a cooling liquid supply box; the liquid cooling plate is embedded in the pouring sealant layer; and the cooling liquid supply box is connected with the liquid cooling plate and is used for circularly supplying cooling liquid to the liquid cooling plate. This application is through setting up the heat conduction hole of a plurality of confession battery cells embedding on the compound radiator unit to coolant liquid through the liquid cooling inboard draws away compound radiator unit heat fast through convection current heat transfer, reaches samming, accuse temperature and secondary radiating effect, finally can make the different battery difference in temperature of battery module and control in reasonable working range with the highest temperature, overall structure is compact, and cooling efficiency is high.
Description
Technical Field
The application relates to the technical field of battery power system heat management, in particular to a battery heat management device based on a composite heat dissipation material and liquid cooling.
Background
The electric automobile is an automobile which uses electric energy as a power source and converts the electric energy into mechanical energy through a controller and a motor to drive the automobile to run. The power battery of the existing electric automobile is generally a lithium battery which forms a high-power and high-capacity lithium battery pack in a series-parallel connection mode. In the operation process, the problems of uneven heat distribution, different single batteries with different service lives and the like easily occur inside the power battery, so that the capacity and the service life of the lithium battery pack are reduced, and even the internal temperature rapidly rises and is out of control.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide a battery thermal management device based on a composite heat dissipation material and liquid cooling, which can solve the problems of poor heat dissipation and poor temperature uniformity of a power battery.
In order to achieve the technical purpose, the application provides a battery thermal management device based on a composite heat dissipation material and liquid cooling, which comprises a composite heat dissipation assembly and a liquid cooling assembly;
the composite heat dissipation assembly comprises a composite heat dissipation main body and an encapsulating adhesive layer;
the composite heat dissipation main body is provided with a plurality of heat conduction holes for embedding the single batteries;
the potting adhesive layer is attached to the outer side wall of the composite material main body;
the liquid cooling assembly comprises a liquid cooling plate and a cooling liquid supply box;
the liquid cooling plate is embedded in the pouring sealant layer;
the cooling liquid supply box is connected with the liquid cooling plate and used for circularly supplying cooling liquid to the liquid cooling plate.
Preferably, the composite heat dissipation main body is formed by coupling foam copper and pouring sealant.
Preferably, the potting adhesive layer and the potting adhesive both use a modified potting adhesive containing 1.5 mass% of expanded graphite.
Preferably, the composite heat dissipation main body is in a rectangular block structure;
the heat conduction holes are uniformly arranged in a row;
the encapsulating adhesive layers are attached to two symmetrical outer side walls of the composite heat dissipation main body, and the liquid cooling plates are embedded in the encapsulating adhesive layers.
Preferably, the cooling liquid supply tank comprises a circulation pump;
and the outlet of the circulating pump is communicated with the liquid outlet of the cooling liquid supply box.
Preferably, two circulation cavities which are distributed up and down penetrate through the liquid cooling plate along the length direction of the liquid cooling plate;
the openings of the two circulation cavities on one end face of the liquid cooling plate are respectively communicated with a liquid outlet and a liquid return port of the cooling liquid supply box through a first hose;
and the openings of the two circulation cavities on the other end surface of the liquid cooling plate are communicated through a second hose.
Preferably, the normal cross section of the circulation chamber along the flow direction of the cooling liquid is square;
the first hose and the second hose are both round pipes;
the liquid cooling plate is connected with the first hose and the second hose through the square and round reducing interface.
Preferably, each heat conducting hole is coated with heat conducting silicone grease which is in contact with the single battery.
Preferably, the device further comprises a shell;
the composite heat dissipation assembly and the liquid cooling assembly are arranged in the shell;
a buffer pad is arranged inside the shell.
The application also provides a new energy automobile, which is characterized by comprising any one of the battery thermal management device based on the composite heat dissipation material and the liquid cooling.
According to the technical scheme, the composite heat dissipation main body is provided with the plurality of heat conduction holes for the single batteries to be embedded into, so that heat generated by the batteries can be absorbed in time; and set up the liquid cooling board at compound heat dissipation main part lateral wall, the coolant liquid in the liquid cooling board is through the heat conduction of convection heat conduction heat removal, reaches samming, accuse temperature and secondary heat dissipation's effect, finally can make the different battery difference in temperature of battery module and the control of highest temperature in reasonable working range, overall structure is compact, and cooling efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a battery thermal management device based on a composite heat dissipation material and liquid cooling provided in the present application;
FIG. 2 is a cross-sectional view of a composite heat sink material and liquid cooling based battery thermal management device provided herein;
in the figure: 1. a single battery; 2. a composite heat dissipation main body; 3. a square and round reducer pipe; 4. a liquid-cooled plate; 5. a housing; 6. a coolant supply tank; 7. and (6) encapsulating the adhesive layer.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses battery thermal management device based on composite heat dissipation materials and liquid cooling.
Referring to fig. 1 and fig. 2, one embodiment provided in the embodiments of the present application includes: the composite heat dissipation assembly and the liquid cooling assembly; the composite heat dissipation assembly comprises a composite heat dissipation main body 2 and a pouring sealant layer 7; the composite heat dissipation main body 2 is provided with a plurality of heat conduction holes for embedding the single batteries 1; the potting adhesive layer 7 is attached to the outer side wall of the composite material main body 2; the liquid cooling assembly comprises a liquid cooling plate 4 and a cooling liquid supply box 6; the liquid cooling plate 4 is embedded in the potting adhesive layer 7; the cooling liquid supply tank 6 is connected to the liquid-cooled plate 4, and is used for circularly supplying the cooling liquid to the liquid-cooled plate 4.
Because the single battery 1 can generate heat during charging and discharging, in order to realize temperature equalization and temperature control of the single battery 1, the single battery is embedded in the composite heat dissipation main body 2 with high heat conductivity coefficient; in order to further improve the cooling rate and realize the large-scale cooling of the battery monomer 1, the liquid cooling plate 4 embedded with the encapsulating adhesive layer 7 is arranged on the composite heat dissipation main body 2, so that cooling liquid can circulate in the liquid cooling plate 4; the composite heat dissipation main body 2 with high heat conductivity can conduct heat to the liquid cooling plate and then pass through the cooling liquid in the liquid cooling plate 4 in a convection heat transfer mode, so that a large amount of heat of the single battery 1 can be quickly and effectively taken away, the maximum temperature rise of the single battery 1 is controlled within a reasonable working range of 25-50 ℃, and the maximum temperature difference of the single battery 1 is controlled within 5 ℃; in addition, because the liquid in the liquid cooling plate 4 does not directly pass through the battery, the risk of the liquid after leakage is greatly reduced, and the liquid cooling safety is improved.
The above is the first embodiment provided in the present application, and the following is the second embodiment provided in the present application, specifically please refer to fig. 1 to 2.
A battery thermal management device based on a composite heat dissipation material and liquid cooling comprises a composite heat dissipation assembly and a liquid cooling assembly; the composite heat dissipation assembly comprises a composite heat dissipation main body 2 and a pouring sealant layer 7; the composite heat dissipation main body 2 is provided with a plurality of heat conduction holes for embedding the single batteries 1; the potting adhesive layer 7 is attached to the outer side wall of the composite material main body 2; the liquid cooling assembly comprises a liquid cooling plate 4 and a cooling liquid supply box 6; the liquid cooling plate 4 is embedded in the potting adhesive layer 7; the cooling liquid supply tank 6 is connected to the liquid-cooled plate 4, and is used for circularly supplying the cooling liquid to the liquid-cooled plate 4.
Further, the composite heat dissipation main body 2 is formed by coupling foam copper and pouring sealant.
Specifically, the composite heat dissipation body 2 has excellent heat conductivity by filling the pores of the foam copper with the modified potting adhesive containing the expanded graphite, and the composite heat dissipation body 2 has higher strength and can better fix and protect the battery.
Furthermore, the potting adhesive layer 7 and the potting adhesive both use a modified potting adhesive containing 1.5 mass% of expanded graphite.
Specifically, after the expanded graphite is added into the pouring sealant, the heat conductivity coefficient is increased; experiments prove that the expanded graphite with the mass percentage of 1.5 percent is the optimal proportion for compounding with the pouring sealant, and if the proportion of the expanded graphite is increased, the viscosity coefficient of the pouring sealant is greatly increased and the pouring sealant cannot be poured into the foamy copper.
Further, the composite heat dissipation main body 2 is in a rectangular block structure; the heat conduction holes are uniformly arranged in a row; the encapsulating adhesive layers 7 are two layers and are attached to two symmetrical outer side walls of the composite heat dissipation main body 2, and the liquid cooling plates 4 are embedded in the two encapsulating adhesive layers 7.
Particularly, the peripheral side wall and the bottom surface of the composite heat dissipation main body 2 can be provided with the potting adhesive layers 7 and the like, and the liquid cooling plates can be correspondingly embedded into the potting adhesive layers, so that the composite heat dissipation main body can dissipate heat better.
Further, the coolant supply tank 6 includes a circulation pump; the outlet of the circulating pump is communicated with the liquid outlet of the cooling liquid supply box 6.
Furthermore, two circulation cavities which are distributed up and down penetrate through the liquid cooling plate 4 along the length direction of the liquid cooling plate; openings of two circulation cavities on one end face of the liquid cooling plate 4 are respectively communicated with a liquid outlet and a liquid return port of the cooling liquid supply box 6 through a first hose; the openings of the two circulation cavities on the other end surface of the liquid cooling plate 4 are communicated through a second hose.
Specifically, in this embodiment, the number of the cooling liquid supply boxes 6 is one, and after entering the circulation pump, the cooling liquid sequentially passes through a liquid outlet of the cooling liquid supply box 6 and the first hose, flows through the potting adhesive layer along the length direction of the circulation cavity, enters another circulation cavity through the second hose, and then flows through another first hose to meet a liquid return port of the cooling liquid supply box 6 to complete circulation of the cooling liquid; in other embodiments, the cooling liquid supply boxes 6 may be disposed on both sides of the opening of the circulation cavity, specifically, the cooling liquid inside the liquid cooling plate 4 may flow circularly.
Furthermore, the cross section of the circulation cavity along the flowing direction of the cooling liquid is square, and the square circulation cavity increases the contact area and is beneficial to heat conduction.
Furthermore, the first hose and the second hose are both round pipes; the liquid cooling plate is connected with the first hose and the second hose through the square and round reducing interface.
Specifically, in the process that the cooling liquid enters the circulation cavity of the liquid cooling plate 4 from the hose through the square-round reducing interface, the cooling liquid is gradually expanded into a square pipe through the round pipe, and the cross section area of the pipeline is increased, so that the fluid pressure and the flow velocity of the cooling liquid are reduced, and the cooling of the cooling liquid is facilitated; the process that the cooling liquid enters the hose from the circulation cavity of the liquid cooling plate 4 through the square-circle reducing interface is all processed in the process that the square tube is a round tube, and the cross section area of the tube is reduced, so that the flow speed of the cooling liquid in the hose is improved.
Furthermore, heat-conducting silicone grease which is in contact with the single battery is coated in each heat-conducting hole, so that the contact thermal resistance between the single battery 1 and the composite material main body 2 is reduced.
Further, a housing 5 is also included; the composite heat dissipation assembly and the liquid cooling assembly are arranged in the shell 5; the inside blotter that is provided with of shell 5 plays insulating buffering guard action.
Particularly, the liquid cooling module and the composite heat dissipation module can be contained in the housing 5, or the housing 5 can contain a plurality of liquid cooling modules and a plurality of composite heat dissipation modules, so that the liquid cooling modules can circularly supply cooling liquid to the composite heat dissipation modules to realize convection heat conduction, and the number of the liquid cooling modules and the composite heat dissipation modules contained in the housing 5 is not limited.
Furthermore, a plurality of single batteries are connected in series and/or in parallel, and any one of the battery thermal management devices based on the composite heat dissipation material and the liquid cooling can be applied to a new energy automobile.
It should be noted that the above mentioned embodiments are only preferred embodiments of the present application, and not intended to limit the present application, and although the present application has been described in detail with reference to examples, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the foregoing examples, or equivalent substitutions of some technical features can be made, any modifications, equivalents, improvements, etc. within the spirit and principle of the present application should be included in the scope of the present application.
Claims (9)
1. A battery thermal management device based on a composite heat dissipation material and liquid cooling is characterized by comprising a composite heat dissipation assembly and a liquid cooling assembly;
the composite heat dissipation assembly comprises a composite heat dissipation main body and an encapsulating adhesive layer;
the composite heat dissipation main body is provided with a plurality of heat conduction holes for embedding the single batteries;
the potting adhesive layer is attached to the outer side wall of the composite heat dissipation main body;
the liquid cooling assembly comprises a liquid cooling plate and a cooling liquid supply box;
the liquid cooling plate is embedded in the pouring sealant layer;
the cooling liquid supply box is connected with the liquid cooling plate and used for circularly supplying cooling liquid to the liquid cooling plate.
2. The composite heat dissipation material and liquid cooling-based battery thermal management device of claim 1, wherein the composite heat dissipation body is formed by coupling foam copper and a potting adhesive.
3. The composite heat sink material and liquid cooling based battery thermal management device of claim 2, wherein the composite heat sink body is a rectangular block structure;
the heat conduction holes are uniformly arranged in a row;
the encapsulating adhesive layers are attached to two symmetrical outer side walls of the composite heat dissipation main body, and the liquid cooling plates are embedded in the encapsulating adhesive layers.
4. The composite heat sink material and liquid cooling based battery thermal management device of claim 3, wherein the coolant supply tank is provided with a circulation pump;
and the outlet of the circulating pump is communicated with the liquid outlet of the cooling liquid supply box.
5. The composite heat dissipation material and liquid cooling based battery thermal management device according to claim 4, wherein two circulation chambers penetrate through the liquid cooling plate along the length direction of the liquid cooling plate;
the two circulation cavities are distributed in parallel at intervals along the width direction of the liquid cooling plate;
the openings of the two circulation cavities on one end face of the liquid cooling plate are respectively communicated with a liquid outlet and a liquid return port of the cooling liquid supply box through a first hose;
and the openings of the two circulation cavities on the other end surface of the liquid cooling plate are communicated through a second hose.
6. The composite heat sink material and liquid cooled battery thermal management device according to claim 5, wherein the cross-section of the flow chamber along the direction of flow of the cooling liquid is square.
7. The composite heat sink material and liquid cooling based battery thermal management apparatus of claim 6,
the first hose and the second hose are both round pipes;
the liquid cooling plate is connected with the first hose and the second hose through square and round reducing connectors respectively.
8. The composite heat sink material and liquid cooling based battery thermal management device of claim 1, wherein each of the thermally conductive vias is coated with a thermally conductive silicone grease that contacts a cell.
9. The composite heat sink material and liquid cooling based battery thermal management device of claim 1, further comprising a housing;
the composite heat dissipation assembly and the liquid cooling assembly are arranged in the shell;
a buffer pad is arranged inside the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022185484.5U CN213425066U (en) | 2020-09-29 | 2020-09-29 | Battery heat management device based on composite heat dissipation material and liquid cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022185484.5U CN213425066U (en) | 2020-09-29 | 2020-09-29 | Battery heat management device based on composite heat dissipation material and liquid cooling |
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| Publication Number | Publication Date |
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| CN213425066U true CN213425066U (en) | 2021-06-11 |
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| CN202022185484.5U Active CN213425066U (en) | 2020-09-29 | 2020-09-29 | Battery heat management device based on composite heat dissipation material and liquid cooling |
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