CN217589095U - Cooling structure for cylindrical battery core and battery module - Google Patents
Cooling structure for cylindrical battery core and battery module Download PDFInfo
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- CN217589095U CN217589095U CN202123372436.8U CN202123372436U CN217589095U CN 217589095 U CN217589095 U CN 217589095U CN 202123372436 U CN202123372436 U CN 202123372436U CN 217589095 U CN217589095 U CN 217589095U
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- cooling structure
- cylindrical battery
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- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 239000012782 phase change material Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 5
- 239000011810 insulating material Substances 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 11
- 239000012071 phase Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a cooling structure and battery module for cylinder electricity core belongs to power battery technical field. The cooling structure for the cylindrical battery core comprises a flexible cylindrical shell and a filling body, wherein the flexible cylindrical shell can be sleeved on the cylindrical battery core, the inner diameter of the flexible cylindrical shell is smaller than the outer diameter of the cylindrical battery core, and the flexible cylindrical shell is provided with a sealed inner space; the filling body is made of phase-change materials and is filled in the inner space. The battery module comprises the cooling structure for the cylindrical battery core. The utility model discloses a cooling structure and battery module for cylinder electricity core has the flexible column shell that flexible, high temperature resistant and insulating material made and sets up the obturator of making by phase change material in flexible column shell through the adoption, and the installation of being convenient for has the cost is reduced, has improved use reliability and security.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a cooling structure and battery module for cylinder electricity core.
Background
In the current industry, the cylinder electricity core mainly uses the liquid cooling structure to cool off, and the liquid cooling structure includes the coiled pipe, and it sets up in the side of cylinder electricity core, takes away the heat that cylinder electricity core produced through coiled pipe internal circulation flow coolant liquid. However, the coiled pipe has the assembly difficulty in the assembly process, and the heat conducting glue is coated between the coiled pipe and the cylindrical battery core usually, so that the heat conducting capacity can be conducted, the structural reliability can be improved, but when the heat conducting glue is coated and does not meet the theoretical design requirement, the coiled pipe extrudes the cylindrical battery core to cause poor flatness of the positive electrode and the negative electrode, and further the problem of poor welding of the top wire harness and the like can be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooling structure and battery module for cylinder electricity core, the installation of being convenient for, reduce cost improves and uses reliability and security.
To achieve the purpose, the utility model adopts the following technical proposal:
in one aspect, a cooling structure for a cylindrical cell is provided, including:
the flexible columnar shell can be sleeved on the cylindrical battery cell, the inner diameter of the flexible columnar shell is smaller than the outer diameter of the cylindrical battery cell, and the flexible columnar shell is provided with a sealed inner space;
and the filling body is made of a phase-change material and is filled in the inner space.
Optionally, the flexible cylindrical housing is made of a material that is flexible, high temperature resistant, and insulating.
Optionally, the flexible cylindrical outer shell comprises an inner shell and an outer shell sleeved outside the inner shell, the filling body is arranged between the inner shell and the outer shell, and two ends of the inner shell and two ends of the outer shell are connected through hot pressing.
Optionally, the flexible cylindrical outer shell includes an inner shell and an outer shell sleeved outside the inner shell, the filler is disposed between the inner shell and the outer shell, and two ends of the inner shell and the outer shell are respectively connected by a sealing member in a sealing manner.
Optionally, the inner housing and the outer housing are both cylindrical.
Optionally, the flexible cylindrical housing is made of PET material.
Optionally, the filling body is made of paraffin or plasticine.
Optionally, the phase transition temperature of the filling body is 38-40 ℃.
On the other hand, a battery module is provided, including cylinder electricity core and foretell a cooling structure for cylinder electricity core, a cooling structure cover for cylinder electricity core is located cylinder electricity core.
Optionally, the flexible cylindrical shell is disposed in a middle position of the cylindrical battery cell, and a height of the flexible cylindrical shell is 80% -90% of a height of the cylindrical battery cell.
The utility model has the advantages that:
the utility model provides a pair of a cooling structure and battery module for cylinder electricity core, the obturator of being made by phase change material is solid-state when low temperature normal atmospheric temperature, and the structure is comparatively soft, can change along with flexible column shell shape change. The cylindrical battery core has a rated temperature range value when working normally, the phase change temperature of the phase change material for manufacturing the filling body is lower than the rated temperature, and when the temperature of the cylindrical battery core exceeds the rated temperature, the filling body has solid-state to liquid-state phase change, absorbs heat and stores a large amount of latent heat, so that the cylindrical battery core is cooled. When the cylindrical battery core is cooled to a normal working rated temperature range value, the filling body is cooled, and the stored heat is dissipated to the environment within a certain temperature range to perform reverse phase change from liquid state to solid state. The filling body is filled in the sealed inner space, so that leakage is prevented, and reliability and safety are improved.
The flexible columnar shell is assembled on the cylindrical battery cell in an interference manner, can be tightly attached to the cylindrical battery cell to form a good heat conduction interface, has small thermal resistance, improves the heat conduction effect, can prevent the cylindrical battery cell and the flexible columnar shell from slipping in the vibration process, ensures the stability and improves the reliability; the inner diameter of the flexible columnar shell is slightly smaller than the diameter of the cylindrical battery cell in a natural state; the flexible columnar shell has flexibility, the filling body made of the phase-change material is filled in the flexible columnar shell, the whole formed by the flexible columnar shell and the filling body has flexibility, the flexible columnar shell and the filling body can adapt to the structure of a cylindrical battery core, coating heat-conducting glue is not needed, the structure and the process are simplified, and the problems of poor welding of a wire harness and the like are prevented.
The cooling structure formed by the flexible columnar shell and the filling body is used for replacing a coiled pipe structure, the sleeve is sleeved on the cylindrical battery core, the structure is flexible, the installation is convenient, the structure and the shape of the cylindrical battery core can be adapted, the tight fitting and the like are carried out, the use of heat-conducting glue or a silica gel pad and the like is cancelled, the structure is further simplified, the assembly process is simplified, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram illustrating a cylindrical battery cell sleeved with a cooling structure for the cylindrical battery cell according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the cylindrical battery cell sleeved with the cooling structure for the cylindrical battery cell according to the embodiment of the present invention;
fig. 3 is an enlarged view of fig. 2 at a.
In the figure:
100. a cylindrical cell;
1. a flexible cylindrical housing; 11. an inner housing; 12. an outer housing; 2. and a filling body.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present embodiment provides a cooling structure for a cylindrical battery cell, as shown in fig. 1 and fig. 2, which includes a flexible cylindrical casing 1 and a filling body 2; specifically, the flexible cylindrical housing 1 can be sleeved on the cylindrical battery cell 100, the inner diameter of the flexible cylindrical housing 1 is smaller than the outer diameter of the cylindrical battery cell 100, and the flexible cylindrical housing 1 has a sealed inner space; the filling body 2 is made of a phase-change material and is filled in the inner space.
During the use, the heat of cylinder electricity core 100 passes through flexible column shell 1 and transmits to obturator 2, and during the cooling of obturator 2 heat absorption, absorbs the heat to cylinder electricity core 100 through flexible column shell 1.
The filling body 2 made of the phase-change material is solid at low temperature and normal temperature, has a softer structure and can change along with the shape change of the flexible columnar shell 1. When the cylindrical electrical core 100 normally works, the range of the rated temperature is provided, the phase change temperature of the phase change material for manufacturing the filler 2 is lower than the rated temperature, and when the temperature of the cylindrical electrical core 100 exceeds the rated temperature, the filler 2 has a solid-to-liquid phase change, absorbs heat, and stores a large amount of latent heat, so that the cylindrical electrical core 100 is cooled. When the cylindrical battery cell 100 is cooled to a normal working rated temperature range value, the filler 2 is cooled, and the stored heat is dissipated to the environment within a certain temperature range to perform reverse phase change from a liquid state to a solid state. The filling body 2 is filled in the sealed inner space, so that leakage is prevented, and reliability and safety are improved.
The flexible columnar shell 1 is assembled on the cylindrical battery core 100 in an interference manner, can be tightly attached to the cylindrical battery core 100 to form a good heat conduction interface, is small in heat resistance, improves the heat conduction effect, can prevent the cylindrical battery core 100 from slipping off the flexible columnar shell 1 in the vibration process, ensures the stability and improves the reliability; the inner diameter of the flexible columnar shell 1 is slightly smaller than the diameter of the cylindrical battery core 100 in a natural state; the flexible columnar shell 1 has flexibility, the filling body 2 made of the phase-change material is filled in the flexible columnar shell 1, the whole formed by the flexible columnar shell 1 and the filling body 2 is flexible, the structure of the cylindrical battery core 100 can be adapted to, the heat-conducting glue does not need to be coated, the structure and the process are simplified, and the problems of poor welding of the wire harness and the like are prevented.
Alternatively, the flexible cylindrical housing 1 is made of a material having flexibility, high temperature resistance, and insulation. The flexible columnar shell 1 is made of a flexible material, so that the flexible columnar shell has flexibility; the flexible columnar shell 1 is made of insulating materials, and is more reliable and safer to use. The flexible columnar shell 1 is made of high-temperature-resistant materials, and the filling body 2 can absorb heat while the flexible columnar shell 1 prevents heat from spreading when thermal runaway occurs.
The cooling structure that forms through flexible column shell 1 and obturator 2 is used for replacing the coiled pipe structure, its cover locate on cylinder electricity core 100 can, and the structure has the flexibility, the installation of being convenient for can adapt to cylinder electricity core 100's structure and shape, closely laminate etc. cancel and use heat-conducting glue or silica gel pad etc. further simplify the structure, simplify the assembly process, reduce cost.
Specifically, the phase transition temperature of the filling body 2 is set according to the working range of the cylindrical battery core 100, specifically according to the actual situation, and is not limited. Specifically, the filling body 2 may generate different phase change heat absorption amounts by using different phase change materials, and the filling body 2 may be manufactured by selecting a corresponding phase change material according to calculation of a heat generation amount of the cylindrical electrical core 100. Specifically, the phase-change material is an existing material, and can be selected according to requirements, or the phase-change material can be prepared according to parameters such as selected phase-change temperature, so that the phase-change material has a corresponding phase-change temperature, and the preparation of the phase-change material is in the prior art and is not repeated. Alternatively, the filling body 2 is made of paraffin or plasticine. The rated temperature of the general cylindrical battery core 100 is not more than 45 ℃, further optionally, the phase transition temperature of the filling body 2 is 38-40 ℃, and the phase transition cooling can be started when the temperature does not exceed 45 ℃, so that the safety is improved.
In this embodiment, as shown in fig. 3, the flexible cylindrical outer shell 1 includes an inner shell 11 and an outer shell 12 sleeved outside the inner shell 11, the filling body 2 is disposed between the inner shell 11 and the outer shell 12, and two ends of the inner shell 11 and the outer shell 12 are connected by hot pressing, so that the flexible cylindrical outer shell 1 forms a sealed inner space. In this embodiment, the flexible cylindrical housing 1 is made of PET (Polyethylene terephthalate, polyester resin) material, and in other embodiments, it may be made of several existing other materials such as teflon, polyphenyl ester, etc., without limitation.
In other embodiments, the flexible cylindrical outer shell 1 includes an inner shell 11 and an outer shell 12 sleeved outside the inner shell 11, the filler 2 is disposed between the inner shell 11 and the outer shell 12, two ends of the inner shell 11 and the outer shell 12 are respectively connected by a sealing member in a sealing manner, specifically, the sealing member may be made of the same material as the inner shell 11, and the sealing member is respectively bonded to the inner shell 11 and the outer shell 12; specifically, the sealing member may also be made of a hard insulating material, such as plastic, and may be inserted or adhered to the inner casing 11 and the outer casing 12 to achieve a sealed connection.
Optionally, as shown in fig. 1 to fig. 3, the inner housing 11 and the outer housing 12 are both cylindrical, and the inner housing 11 is adapted to the shape of the cylindrical battery cell 100 to ensure that the inner housing and the cylindrical battery cell are capable of being attached; the outer shell 12 is matched with the inner shell 11 in shape, so that the volume is ensured to be minimum, and the space is saved.
The present embodiment provides a battery module, as shown in fig. 1 to fig. 3, which includes a cylindrical battery core 100 and the above cooling structure for the cylindrical battery core, and the cylindrical battery core 100 is sleeved with the cooling structure for the cylindrical battery core. By adopting the cooling structure for the cylindrical battery core, the filling body 2 made of the phase-change material and arranged in the flexible cylindrical shell 1 is sleeved outside the cylindrical battery core 100, so that the installation is convenient, the cost is reduced, and the use reliability and safety are improved. Further, by using the flexible column-shaped housing 1 made of a material having flexibility, high temperature resistance, and insulation.
Optionally, as shown in fig. 1 and fig. 2, the flexible cylindrical casing 1 is disposed in the middle of the cylindrical battery cell 100, and the height of the flexible cylindrical casing 1 is 80% -90% of the height of the cylindrical battery cell 100, and wraps up the most of the structure of the cylindrical battery cell 100, so as to well control the temperature rise and the temperature difference of the cylindrical battery cell 100, and ensure the uniformity of the temperature on the cylindrical battery cell 100.
It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A cooling structure for a cylindrical cell, comprising:
the flexible columnar shell (1) can be sleeved on the cylindrical battery core (100), the inner diameter of the flexible columnar shell (1) is smaller than the outer diameter of the cylindrical battery core (100), and the flexible columnar shell (1) is provided with a sealed inner space;
the filling body (2) is made of a phase change material and is filled in the inner space.
2. Cooling structure for cylindrical cells according to claim 1, characterized in that the flexible cylindrical casing (1) is made of a material that is flexible, resistant to high temperatures and insulating.
3. The cooling structure for the cylindrical battery cell according to claim 1, wherein the flexible cylindrical outer shell (1) comprises an inner shell (11) and an outer shell (12) sleeved outside the inner shell (11), the filler (2) is arranged between the inner shell (11) and the outer shell (12), and two ends of the inner shell (11) and the outer shell (12) are connected through hot pressing.
4. The cooling structure for the cylindrical battery core according to claim 1, wherein the flexible cylindrical outer shell (1) comprises an inner shell (11) and an outer shell (12) sleeved outside the inner shell (11), the filler (2) is arranged between the inner shell (11) and the outer shell (12), and two ends of the inner shell (11) and the outer shell (12) are respectively connected in a sealing manner through a sealing member.
5. The cooling structure for cylindrical cells according to claim 3 or 4, characterized in that the inner casing (11) and the outer casing (12) are both cylindrical.
6. Cooling structure for cylindrical cells according to any of claims 1 to 4, characterized in that the flexible cylindrical casing (1) is made of PET material.
7. Cooling structure for cylindrical cells according to any of claims 1 to 4, characterized in that the filler body (2) is made of paraffin or plasticine.
8. Cooling structure for cylindrical cells according to any of claims 1 to 4, characterized in that the phase transition temperature of the filling body (2) is 38 ℃ to 40 ℃.
9. A battery module, characterized by comprising a cylindrical cell (100) and the cooling structure for a cylindrical cell of any one of claims 1 to 8, wherein the cooling structure for a cylindrical cell is sleeved on the cylindrical cell (100).
10. The battery module according to claim 9, wherein the flexible cylindrical casing (1) is disposed in the middle of the cylindrical battery core (100), and the height of the flexible cylindrical casing (1) is 80-90% of the height of the cylindrical battery core (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123372436.8U CN217589095U (en) | 2021-12-29 | 2021-12-29 | Cooling structure for cylindrical battery core and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123372436.8U CN217589095U (en) | 2021-12-29 | 2021-12-29 | Cooling structure for cylindrical battery core and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217589095U true CN217589095U (en) | 2022-10-14 |
Family
ID=83526838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123372436.8U Active CN217589095U (en) | 2021-12-29 | 2021-12-29 | Cooling structure for cylindrical battery core and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217589095U (en) |
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2021
- 2021-12-29 CN CN202123372436.8U patent/CN217589095U/en active Active
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