CN214336785U - Battery thermal management system - Google Patents
Battery thermal management system Download PDFInfo
- Publication number
- CN214336785U CN214336785U CN202023178125.3U CN202023178125U CN214336785U CN 214336785 U CN214336785 U CN 214336785U CN 202023178125 U CN202023178125 U CN 202023178125U CN 214336785 U CN214336785 U CN 214336785U
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- Prior art keywords
- battery
- water pipeline
- cold water
- hot water
- management system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 141
- 238000001704 evaporation Methods 0.000 claims abstract description 35
- 230000008020 evaporation Effects 0.000 claims abstract description 35
- 238000009833 condensation Methods 0.000 claims abstract description 17
- 230000005494 condensation Effects 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000008400 supply water Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Secondary Cells (AREA)
Abstract
The utility model provides a battery thermal management system, include: the device comprises a cold water pipeline, a hot water pipeline, at least one micro heat pipe and at least one battery pack, wherein the micro heat pipe is provided with a first evaporation section, a second evaporation section and a condensation section which are arranged from bottom to top, and working media are filled in the micro heat pipe; the cold water pipeline is arranged at the top of the battery pack in a fitting manner, the hot water pipeline is arranged at the bottom of the battery pack in a fitting manner, and the micro heat pipe is arranged on one surface of the battery pack in a fitting manner; the first evaporation section is attached to the hot water pipeline, the second evaporation section is attached to one surface of the battery pack, and the condensation section is attached to the cold water pipeline. The battery thermal management system of the utility model combines the liquid auxiliary cooling/heating, fully exerts the advantages of the high thermal conductivity of the micro heat pipe, can rapidly discharge heat when the battery is at high temperature, shortens the heating time when the battery is at low temperature, and ensures the high-efficiency operation of the battery; the battery can be heated at high temperature and low temperature by using the micro heat pipe without adding other auxiliary heat dissipation devices, and the battery heat management system is simplified.
Description
Technical Field
The utility model relates to a power battery heat management technical field especially relates to a battery heat management system.
Background
The power battery of the electric automobile is used as a key part of the electric automobile, the performance of the power battery directly influences the popularization of the electric automobile, and the temperature has obvious influence on the overall performance of the power battery.
The improvement of the power performance of the electric automobile needs high-energy, high-power or large-size battery packs/bags to be matched with the improvement. The output voltage of the single battery is small, and dozens or even hundreds of single batteries need to be connected in series/parallel in actual use to meet the power requirement and the voltage requirement of the electric automobile.
The charging/discharging process of the battery is a complex electrochemical process, and simultaneously, the heat generated is accompanied with the heat releasing and absorbing actions, the temperature of the battery is increased, if the heat is not timely led out, the temperature of the battery is increased, the output power of the battery is further reduced, the service life of the battery is reduced, and in severe cases, even the battery can explode to cause safety accidents. Under the low-temperature environment, the internal resistance of the battery is greatly increased, the voltage of the battery is quickly reduced, and the discharge performance of the battery is greatly reduced. In extreme cases, the electrolyte may even freeze, which may cause the battery to fail to discharge and the electric vehicle to start, and the problem of low temperature heating of the power battery is unavoidable. Therefore, effective thermal management of the power battery is necessary.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery thermal management system for heating problem before the start-up under the heat dissipation problem of power battery under the high temperature environment and the low temperature environment among the solution prior art.
The utility model provides a battery thermal management system, include: the micro heat pipe comprises a cold water pipeline, a hot water pipeline, at least one micro heat pipe and at least one battery pack, wherein the micro heat pipe is provided with a first evaporation section, a second evaporation section and a condensation section which are arranged from bottom to top, and working media are filled in the micro heat pipe;
the cold water pipeline is arranged at the top of the battery pack in a laminating manner, the hot water pipeline is arranged at the bottom of the battery pack in a laminating manner, and the micro heat pipe is arranged on one surface of the battery pack in a laminating manner; the first evaporation section is attached to the hot water pipeline, the second evaporation section is attached to one side of the battery pack, and the condensation section is attached to the cold water pipeline.
According to the utility model provides a pair of battery thermal management system, little heat pipe is the inside flat venturi tube that has a plurality of independent microchannels.
According to the utility model provides a pair of battery thermal management system, the second evaporation zone with between the group battery the condensation zone with between the cold water pipeline and first evaporation zone with be equipped with the heat-conducting layer between the hot water pipeline.
According to the utility model provides a pair of battery thermal management system, the heat-conducting layer is heat conduction silicone grease or heat conduction silica gel.
According to the utility model provides a pair of battery thermal management system, cold water pipeline is the S-shaped, just cold water pipeline is two-way flow structure.
According to the utility model provides a pair of battery thermal management system, cold water pipeline has two cold water passageway, follows the length direction of cold water pipeline extends and forms first isolation, in order to form two cold water passageway.
According to the utility model provides a pair of battery thermal management system, the hot-water line is the S-shaped, just the hot-water line is two-way flow structure.
According to the utility model provides a pair of battery thermal management system, the hot-water line has two hot water passageway, follows the length direction of hot-water line extends and forms the second isolation portion, in order to form two hot water passageway.
According to the utility model provides a pair of battery thermal management system, cold water pipeline is linked together with the cold water system, the hot water pipeline is linked together with the hot water system.
According to the utility model provides a pair of battery thermal management system, battery thermal management system still includes battery temperature monitoring subassembly and controller, battery temperature monitoring subassembly the cooling water system and the hot water system all with the controller signal links to each other.
The utility model provides a battery thermal management system, when the battery temperature surpassed high temperature radiating temperature, the cold water pipeline began to supply water, and the second evaporation zone of laminating on the battery monomer exports the heat that the battery produced, carries out heat exchange with cold water through the condensation zone and discharges the heat outside the battery box to reduce battery operating temperature, guarantee battery temperature homogeneity; when the temperature of the battery is lower than the low-temperature starting temperature, the hot water pipeline starts to supply water, the first evaporation section quickly transfers the heat of the hot water to the second evaporation section, and then the heat is transferred to the battery, so that the battery is quickly and uniformly preheated; when the surface temperature of the battery is higher than the low-temperature starting temperature and lower than the high-temperature radiating temperature, the cold water pipeline and the hot water pipeline stop supplying water. The battery thermal management system of the utility model combines the liquid auxiliary cooling/heating, fully exerts the advantages of the high thermal conductivity of the micro heat pipe, can rapidly discharge heat when the battery is at high temperature, shortens the heating time when the battery is at low temperature, and ensures the high-efficiency operation of the battery; the battery can be heated at high temperature and low temperature by using the micro heat pipe without adding other auxiliary heat dissipation devices, and the battery heat management system is simplified.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an exploded schematic view of a battery thermal management system provided by the present invention;
fig. 2 is a schematic structural diagram of a battery thermal management system provided by the present invention;
fig. 3 is an assembly schematic diagram of the battery pack, the hot water pipeline, the cold water pipeline and the micro heat pipe provided by the present invention;
fig. 4 is a schematic structural diagram of a cold water pipeline provided by the present invention;
fig. 5 is a partial enlarged view of the cold water pipeline provided by the present invention;
fig. 6 is a schematic cross-sectional view of a micro heat pipe provided by the present invention;
reference numerals:
1: a housing; 2: a micro heat pipe;
21: a first evaporation section; 22: a second evaporation section;
23: a condensing section; 3: a battery cell;
4: a hot water pipeline; 5: a cold water line;
6: a cold water inlet; 7: a cold water outlet;
8: a hot water inlet; 9: a hot water outlet;
10: a cold water passage; 11: a microchannel;
12: and a vertical rib.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The heat pipe transfers heat by utilizing evaporation/condensation of a working medium in the pipe, has a plurality of excellent characteristics such as high heat-conducting property, excellent isothermal property, reversibility of heat flow direction, thermal diode and thermal switch property and the like, and is widely applied to the fields of heat dissipation of microelectronic devices, air conditioning systems, high-efficiency heat exchangers and the like.
The gravity heat pipe is also called as two-phase closed thermosiphon, and has no capillary structure in the pipe, and the liquid is made to flow back under the action of gravity.
In the existing heat management technology, a heat pipe is used for cooling a battery, a large amount of heat generated in the working process of the battery is rapidly transmitted to a condensation end from an evaporation end by the heat pipe, and then the heat is led out by an additional cooling mode which is usually air cooling, but because the air convection heat transfer coefficient is low, the heat dissipation requirement cannot be met for a large-scale power battery pack. And for the gravity heat pipe, the cooling of the battery pack can only be realized by using air cooling as an auxiliary heat dissipation means at the condensation section of the heat pipe, the preheating of the battery cannot be realized when the ambient temperature is low, and the operation efficiency of the battery in a low-temperature environment is ensured.
As shown in fig. 1, fig. 2 and fig. 3, the battery thermal management system of the present invention includes: the device comprises a cold water pipeline 5, a hot water pipeline 4, at least one micro heat pipe 2 and at least one battery pack, wherein the micro heat pipe 2 is provided with a first evaporation section 21, a second evaporation section 22 and a condensation section 23 which are arranged from bottom to top, and working media are filled in the micro heat pipe 2;
the cold water pipeline 5 is arranged at the top of the battery pack in an attaching mode, the hot water pipeline 4 is arranged at the bottom of the battery pack in an attaching mode, and the vertically arranged micro heat pipe 2 is arranged on one surface of the battery pack in an attaching mode; wherein, first evaporation zone 21 laminates with hot water pipeline 4 mutually, and second evaporation zone 22 laminates with the one side of group battery mutually, and condensation segment 23 laminates with cold water pipeline 5 mutually.
It should be noted that the battery pack is formed by densely arranging a plurality of battery cells 3 in one row or a plurality of rows, each battery cell 3 is placed horizontally, and a gap is left between two adjacent battery cells 3. Wherein, the electrodes of the plurality of battery units 3 are all positioned on the same side.
It can be understood that the micro heat pipes 2 are arranged on the opposite side surfaces of the battery pack in a fitting manner, that is, the two micro heat pipes 2 are respectively attached to the side surfaces of the two battery cells 3 on the outermost side in the battery pack. The side surface of the battery unit 3 may be provided with a plurality of micro heat pipes 2 in an attaching manner, and the number of the micro heat pipes 2 is determined by the size of the battery and the size of the micro heat pipes 2, which is not limited specifically herein.
In the embodiment of the present invention, when the temperature of the battery exceeds the high temperature heat dissipation temperature, the cold water pipeline 5 starts to supply water, the second evaporation section 22 attached to the battery monomer 3 guides out the heat generated by the battery, and the heat is exchanged with the cold water through the condensation section 23 to discharge the heat out of the battery box, thereby reducing the working temperature of the battery and ensuring the uniformity of the temperature of the battery; when the temperature of the battery is lower than the low-temperature starting temperature, the hot water pipeline 4 starts to supply water, the first evaporation section 21 quickly transfers the heat of the hot water to the second evaporation section 22, and then the heat is transferred to the battery, so that the battery is quickly and uniformly preheated; when the surface temperature of the battery is higher than the low-temperature starting temperature and lower than the high-temperature radiating temperature, the cold water pipeline 5 and the hot water pipeline 4 stop supplying water. The battery thermal management system provided by the embodiment of the utility model combines the liquid auxiliary cooling/heating, fully exerts the advantages of the high thermal conductivity of the micro heat pipe, can rapidly discharge heat when the battery is at high temperature, shortens the heating time when the battery is at low temperature, and ensures the high-efficiency operation of the battery; the battery can be heated at high temperature and low temperature by using the micro heat pipe without adding other auxiliary heat dissipation devices, and the battery heat management system is simplified.
Further, two sides of the same micro heat pipe 2 may be respectively in contact with two battery packs, i.e. the micro heat pipe 2 is arranged between two adjacent battery packs.
In addition to the above embodiments, as shown in fig. 6, in order to make the bonding area between the micro heat pipe 2 and the side surface of the battery cell 3 sufficiently large, the micro heat pipe 2 is a flat pipe having a plurality of independent microchannels inside.
It should be noted that the micro heat pipe 2 may be a multi-channel flat aluminum pipe, and a plurality of longitudinal vertical ribs 12 are disposed inside the flat pipe, so as to divide the inside of the flat pipe into a plurality of micro channels 11 that are not communicated with each other, and each micro channel 11 can operate independently.
The embodiment of the utility model provides an in, little heat pipe 2 has flat appearance increase with the area of contact on battery surface, increase heat conduction efficiency, and the fail safe nature of operation has been guaranteed to the independent microchannel 11 of little heat pipe 2 simultaneously, and the pipe wall bearing capacity is high, does not have almost the leakage problem.
On the basis of the above embodiment, in order to ensure good heat transfer, heat conducting layers are arranged between the second evaporation section 22 and the battery pack, between the condensation section 23 and the cold water pipeline 5, and between the first evaporation section 21 and the hot water pipeline 4.
It should be noted that the heat conducting layer is heat conducting silicone grease or heat conducting silicone.
On the basis of the above embodiment, as shown in fig. 4 and 5, in order to prevent the temperature from gradually increasing during the cold water flowing process and make the heat dissipation capacity of the tail end poor, the cold water pipeline 5 is S-shaped and the cross section is flat, and the cold water pipeline 5 is of a bidirectional flow structure.
The cold water pipe 5 has two cold water passages 10, and a first partition is formed to extend in the longitudinal direction of the cold water pipe 5 to form the two cold water passages 10.
Wherein, there are a cold water inlet 6 and a cold water outlet 7 respectively at both ends of the cold water pipeline 5, cold water enters from the cold water inlet 6 of one end and discharges from the cold water outlet 7 of the other end while circulating.
On the basis of the above embodiment, in order to prevent the temperature from gradually increasing during the flowing process of the cold water and make the heat dissipation capability of the tail end poor, the hot water pipeline 4 is S-shaped and the cross section is flat, and the hot water pipeline 4 is of a bidirectional flowing structure.
It should be noted that the hot water pipe 4 has two hot water passages, and a second partition is formed along the length direction of the hot water pipe 4 to form the two hot water passages.
Wherein, two ends of the hot water pipeline 4 are respectively provided with a hot water inlet 8 and a hot water outlet 9, and hot water enters from the hot water inlet 8 at one end and is discharged from the hot water outlet 9 at the other end when circulating.
On the basis of the above embodiment, the cold water pipeline 5 is communicated with a cold water system, and the hot water pipeline 4 is communicated with a hot water system.
The cold water required in the cold water line 5 is supplied through the cold water system, and the hot water required in the hot water line 4 is supplied through the hot water system. Wherein, the cold water inlet 6 and the cold water outlet 7 of the cold water channel 10 are both communicated with a cold water system, and the hot water inlet 8 and the hot water outlet 9 of the hot water channel are both communicated with a hot water system.
On the basis of the embodiment, the battery thermal management system further comprises a battery temperature monitoring assembly and a controller, and the battery temperature monitoring assembly, the cold water system and the hot water system are connected with the controller through signals.
In the embodiment of the utility model, when the battery temperature monitoring assembly monitors that the battery temperature exceeds the high-temperature heat dissipation temperature, the controller sends an instruction to the cooling water system, the cooling water system is started to supply water, the second evaporation section 22 attached to the battery monomer 3 leads out the heat generated by the battery, and the heat is discharged out of the battery box through the heat exchange between the condensation section 23 and the cooling water, so that the working temperature of the battery is reduced, and the uniformity of the battery temperature is ensured; when the battery temperature monitoring assembly monitors that the battery temperature is lower than the low-temperature starting temperature, the controller sends an instruction to the hot water system, the hot water system is started to supply water, the first evaporation section 21 quickly transfers the heat of the hot water to the second evaporation section 22, and then the heat is transferred to the battery, so that the battery is quickly and uniformly preheated; when the battery temperature monitoring assembly monitors that the surface temperature of the battery is higher than the low-temperature starting temperature and lower than the high-temperature radiating temperature, the controller respectively sends instructions to the cold water system and the hot water system, and the cold water system and the hot water system are closed.
Further, the battery box is located outside the battery pack to form a closed structure, the battery box is formed by enclosing a plurality of shells 1, and four through holes are simultaneously formed in one of the shells 1 to be used for reserving a hot water inlet 8, a hot water outlet 9, a cold water inlet 6 and a cold water outlet 7 outside the battery box.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023178125.3U CN214336785U (en) | 2020-12-25 | 2020-12-25 | Battery thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023178125.3U CN214336785U (en) | 2020-12-25 | 2020-12-25 | Battery thermal management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214336785U true CN214336785U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023178125.3U Active CN214336785U (en) | 2020-12-25 | 2020-12-25 | Battery thermal management system |
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| CN (1) | CN214336785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654962A (en) * | 2022-02-28 | 2022-06-24 | 河南科技大学 | Electric automobile heat management system, heat management method and electric automobile |
| CN114695997A (en) * | 2020-12-25 | 2022-07-01 | 中国科学院理化技术研究所 | Battery thermal management system |
-
2020
- 2020-12-25 CN CN202023178125.3U patent/CN214336785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695997A (en) * | 2020-12-25 | 2022-07-01 | 中国科学院理化技术研究所 | Battery thermal management system |
| CN114654962A (en) * | 2022-02-28 | 2022-06-24 | 河南科技大学 | Electric automobile heat management system, heat management method and electric automobile |
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