CN215816049U - Structure for improving temperature of battery pack by using phase-change material - Google Patents
Structure for improving temperature of battery pack by using phase-change material Download PDFInfo
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- CN215816049U CN215816049U CN202121837514.4U CN202121837514U CN215816049U CN 215816049 U CN215816049 U CN 215816049U CN 202121837514 U CN202121837514 U CN 202121837514U CN 215816049 U CN215816049 U CN 215816049U
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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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Abstract
The utility model discloses a structure for improving the temperature of a battery pack by utilizing a phase-change material. The utility model utilizes the solid-solid phase change material PCM not to generate phase state transition when in phase change, but the crystal form of the phase change material is changed, and heat is absorbed and discharged in the crystal form changing process.
Description
Technical Field
The utility model relates to the technical field of structures for improving the temperature of a battery pack, in particular to a structure for improving the temperature of the battery pack by utilizing a phase-change material.
Background
With the rapid development of the technology level, the electric bicycles, electric motorcycles, electric balance vehicles, electric scooters and electric related storage battery application products are developed vigorously nowadays, the environments for using the battery (module) are relatively complex, and one important aspect of the battery (module) is that the battery (module) needs to have an excellent thermal management function. Because the battery (module) set has no heat management structure design, the battery cells are in a state of high temperature or large temperature difference between the battery cells.
The structure of battery pack temperature in the market leads to severe shortening of the service time of products applied to the battery (module) and severe safety concerns such as fire, explosion and the like, so the battery (module) must have an effective heat management structure design, especially for the battery (module) using cylindrical cells, because the number of cells is large, the temperature of the cells in direct contact with the outside air at the periphery is low when the cells are arranged in series and parallel and the battery is charged and discharged, and the temperature of the cells arranged at the more central part is high, so the temperature difference of the battery is large, and the temperature difference cannot be effectively reduced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a structure for improving a temperature of a battery pack by using a phase change material, so as to solve the problems that the structure for improving the temperature of the battery pack in the market proposed in the background art causes severe reduction in service time of a product to which the battery (module) is applied and life of the battery (module), and more serious safety concerns such as ignition and explosion may be caused, and therefore the battery (module) must have an effective thermal management structure design, and particularly, a battery (module) using cylindrical battery cells has a large number of battery cells, and when the battery cells are arranged in series and parallel and the battery is charged and discharged, the temperature of the battery cells in direct contact with external air at the periphery is low, and the temperature of the battery cells arranged at the center is high, so that the temperature difference of the battery is large, and the temperature difference cannot be effectively reduced.
In order to achieve the purpose, the utility model provides the following technical scheme: a structure for improving the temperature of a battery pack using a phase change material, comprising:
a total positive conducting plate, wherein a total negative conducting plate is arranged on one side of the total positive conducting plate;
the battery cell upper bracket is arranged below the total negative conducting strip;
the battery cell is arranged below the battery cell upper bracket;
a solid-solid phase change material PCM disposed below the cell;
the battery cell lower bracket is arranged below the solid-solid phase change material PCM;
and the series-parallel connection conducting strips are arranged below the battery cell lower support.
Preferably, the shape structure of the total positive conducting strip is matched with that of the total negative conducting strip, and the total negative conducting strip is movably connected with the battery cell upper support.
Preferably, the battery cell upper bracket penetrates through the outside of the battery cell, and the battery cell is parallel to the solid-solid phase change material PCM.
Preferably, the solid-solid phase change material PCM and the battery cell lower bracket are attached to each other, and the battery cell lower bracket form a clamping structure through the solid-solid phase change material PCM.
Preferably, the battery cell lower support and the series-parallel connection conducting strips are movably connected, and the solid-solid phase change material PCM forms a buckle structure with the series-parallel connection conducting strips through the battery cell lower support.
Preferably, the battery cell upper bracket and the battery cell lower bracket are in threaded connection, and the total positive conducting strip and the battery cell lower bracket form a disassembly structure through the battery cell upper bracket and the battery cell lower bracket.
Compared with the prior art, the utility model has the beneficial effects that: this utilize phase change material to improve structure of group battery temperature possesses following beneficial effect: the phase change of the solid-solid phase change material PCM is not generated when the phase change is carried out, but the crystal form of the phase change material is changed, heat is absorbed and released in the crystal form change process, the solid-solid phase change material PCM is adopted for preventing the phenomenon of liquefaction after the heat is absorbed in the charging and discharging process of the battery module, the phase change material is prevented from being converted into liquid phase, the solid-solid phase change material PCM flows or overflows a shell of the battery module in the battery module, the short circuit of the battery module is prevented from being caused, or the battery module is prevented from being in contact with an electric core unevenly due to the solid-solid phase change material PCM, the temperature management of the electric core is poor, the battery module adopts the solid-solid phase change material PCM as a heat management mode, the temperature of the electric core can be effectively reduced, the temperature of the electric core in the battery module is enabled to be more consistent, and the service life of the battery pack is prolonged.
1. According to the utility model, the battery module needs to adopt the battery core lower support to ensure the structural strength of the battery module, the solid-solid phase change material PCM is placed in the battery core lower support, and the material strength is changed along with the change of the material in the phase change process of the solid-solid phase change material PCM, so that the solid-solid phase change material PCM cannot be completely used as the structural strength, and the battery module only has the functions of absorbing and emitting heat and the function of isolating the heat among the battery cores without mutual interference, thereby achieving the effect of uniform temperature of the battery cores.
2. The utility model can make the total negative conducting strip, the electric core and the solid-solid phase change material PCM arranged in the electric core upper bracket and the electric core lower bracket, the battery module uses the electric core upper bracket and the electric core lower bracket to limit the solid-solid phase change material PCM, the use of the solid-solid phase change material PCM has the double effects of strengthening the structural strength of the battery module and dissipating and absorbing heat, the heat generated by the electric core directly dissipates and absorbs heat by the solid-solid phase change material PCM, and the purposes of temperature equalization and temperature reduction are achieved.
Drawings
FIG. 1 is a schematic diagram of an explosive structure according to the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of an assembly structure according to the present invention.
In the figure: 1. a total positive conducting strip; 2. a total negative conducting strip; 3. a battery cell upper bracket; 4. an electric core; 5. solid-solid phase change material PCM; 6. a battery cell lower support; 7. and the conducting strips are connected in series and in parallel.
Detailed Description
As shown in fig. 1-2, the present invention provides a technical solution: a structure for improving the temperature of a battery pack using a phase change material, comprising: a total positive conducting plate 1, and a total negative conducting plate 2 is arranged on one side of the total positive conducting plate 1; the battery cell upper bracket 3 is arranged below the total negative conducting strip 2; the battery cell 4 is arranged below the battery cell upper bracket 3; a solid-solid phase change material PCM5 disposed below the battery cell 4; the cell lower bracket 6 is arranged below the solid-solid phase change material PCM 5; the series-parallel connection conducting strip 7 is arranged below the cell lower bracket 6, the shape structure of the total positive conducting strip 1 is matched with the shape structure of the total negative conducting strip 2, the total negative conducting strip 2 is movably connected with the cell upper bracket 3, the total positive conducting strip 1 and the total negative conducting strip 2 which are matched with each other in shape structure are movably arranged on the cell upper bracket 3, the battery module is arranged in the total positive conducting strip 1, the total negative conducting strip 2 and the cell upper bracket 3, so that a designer can carry out effective thermal management structure design on the battery module, in particular to the battery module applying a cylindrical cell, the cell upper bracket 3 penetrates through the outside of the cell 4, the cell 4 is parallel to the solid phase change material PCM5, the cell upper bracket 3 penetrates through the outside of the cell 4, the combined cell upper bracket 3 can be arranged in the solid phase change material PCM5 through the cell 4, and phase change does not occur when the solid phase change material PCM5 is utilized, the crystal form of the phase change material is changed, heat is absorbed and released in the crystal form change process, the solid-solid phase change material PCM5 is adopted to prevent the phase change material from being converted into liquid phase due to no liquefaction phenomenon after heat absorption in the charging and discharging process of the battery module, so that the solid-solid phase change material PCM5 flows or overflows from the battery module shell in the battery module, the short circuit of the battery module is prevented or the contact of the solid-solid phase change material PCM5 with the battery core is not uniform, the temperature of the battery core is poorly managed, the battery module adopts the solid-solid phase change material PCM5 as heat management, the temperature of the battery core 4 can be effectively reduced, the temperature of the battery core 4 in the battery module is enabled to be more consistent, the service life of the battery pack is prolonged, the solid-solid phase change material PCM5 is mutually attached to the lower battery core bracket 6, the battery core 4 forms a clamping structure with the lower battery core bracket 6 through the solid-solid phase change material PCM5, when the battery core 4 is installed in the solid-solid phase change material PCM5, the solid-solid phase change material PCM5 can be mutually attached and arranged inside the lower battery cell bracket 6, the lower battery cell bracket 6 is required to be adopted by the battery module to ensure the structural strength of the battery module, the solid-solid phase change material PCM5 is arranged in the lower battery cell bracket 6, the material strength is changed along with the change of the material in the phase change process of the solid-solid phase change material PCM5, the application of the material strength can not be completely used as the structural strength, and only the functions of heat absorption and heat release are undertaken, and the heat isolation between the battery cores 4 does not interfere with each other, so as to achieve the effect of temperature equalization of the battery cores 4, the battery core lower bracket 6 is movably connected with the series-parallel connection conducting strips 7, and the solid-solid phase change material PCM5 forms a buckle structure with the series-parallel connection conducting strips 7 through the cell lower bracket 6, when the solid-solid phase change material PCM5 is attached to each other and installed inside the battery cell lower bracket 6, the series-parallel connection conducting strips 7 can be buckled and installed at the bottom of the battery cell lower bracket 6 for protection.
As shown in fig. 3, the present invention provides a technical solution: the utility model provides an utilize phase change material to improve structure of group battery temperature, be threaded connection between electric core upper bracket 3 and the electric core lower carriage 6, and total positive conducting strip 1 constitutes the dismantlement structure through electric core upper bracket 3 and electric core lower carriage 6, install electric core upper bracket 3 threaded connection in electric core lower carriage 6, can make total negative conducting strip 2, electric core 4 and solid phase change material PCM5 settle in the inside of electric core upper bracket 3 and electric core lower carriage 6, the battery module uses electric core upper bracket 3 and electric core lower carriage 6 to restrict solid phase change material PCM5, use solid phase change material PCM5 have strengthen battery module structural strength and have the dual effect of heat dissipation, the heat that electric core 4 produced directly borrows solid phase change material PCM5 to dissipate the heat absorption, both reached the samming can lower the temperature.
In summary, in the structure for improving the temperature of the battery pack by using the phase change material, when in use, the upper battery cell bracket 3 penetrates through the outside of the battery cell 4, the combined upper battery cell bracket 3 can be installed inside the solid-solid phase change material PCM5 through the battery cell 4, the phase change of the solid-solid phase change material PCM5 does not occur during the phase change, but the crystal form of the phase change material changes, heat is absorbed and released during the crystal form change, the upper battery cell bracket 3 is installed in the lower battery cell bracket 6 in a threaded connection manner, the total negative conducting strip 2, the battery cell 4 and the solid-solid phase change material PCM5 can be arranged inside the upper battery cell bracket 3 and the lower battery cell bracket 6, the battery module limits the solid-solid phase change material PCM5 by using the upper battery cell bracket 3 and the lower battery cell bracket 6, the solid-solid phase change material PCM5 has double heat absorption effects of enhancing the structural strength and dissipating, and heat generated by the battery cell 4 is directly dissipated by the solid-solid phase change material PCM5, the solid-solid phase change material PCM5 is used for preventing the battery module from being short-circuited or contacting with an electric core unevenly because the electric core is not well managed due to the fact that the solid-solid phase change material PCM5 is adopted to conduct heat management because the solid-solid phase change material PCM5 is adopted to conduct heat management, and the solid-solid phase change material PCM5 does not change in phase when changing the phase but changes in crystal form of the phase change material and absorbs and emits heat in the process of changing the crystal form, and the solid-solid phase change material PCM5 is used for preventing the phenomenon that the phase change material is liquefied after absorbing the heat in the process of charging and discharging of the battery module and avoiding the phenomenon that the phase change material is changed into liquid phase so that the solid-solid phase change material PCM5 flows or overflows into the battery module.
Claims (6)
1. A structure for improving the temperature of a battery pack using a phase change material, comprising:
the device comprises a total positive conducting strip (1), wherein a total negative conducting strip (2) is arranged on one side of the total positive conducting strip (1);
the battery cell upper bracket (3) is arranged below the total negative conducting strip (2);
the battery cell (4) is arranged below the battery cell upper bracket (3);
a solid-solid phase change material PCM (5) disposed below the battery cell (4);
the cell lower bracket (6) is arranged below the solid-solid phase change material PCM (5);
and the series-parallel conducting strips (7) are arranged below the battery cell lower support (6).
2. The structure for improving the temperature of a battery pack using a phase change material as claimed in claim 1, wherein: the shape structure of the total positive conducting strip (1) is matched with that of the total negative conducting strip (2), and the total negative conducting strip (2) is movably connected with the battery cell upper support (3).
3. The structure for improving the temperature of a battery pack using a phase change material as claimed in claim 1, wherein: the battery cell upper bracket (3) penetrates through the outside of the battery cell (4), and the battery cell (4) is parallel to the solid-solid phase change material PCM (5).
4. The structure for improving the temperature of a battery pack using a phase change material as claimed in claim 1, wherein: the solid-solid phase change material PCM (5) and the battery cell lower support (6) are mutually attached, and the battery cell (4) and the battery cell lower support (6) form a clamping structure through the solid-solid phase change material PCM (5).
5. The structure for improving the temperature of a battery pack using a phase change material as claimed in claim 1, wherein: the cell lower support (6) is movably connected with the series-parallel connection conducting strips (7), and the solid-solid phase change material PCM (5) forms a buckle structure with the series-parallel connection conducting strips (7) through the cell lower support (6).
6. The structure for improving the temperature of a battery pack using a phase change material as claimed in claim 1, wherein: the battery cell upper support (3) is in threaded connection with the battery cell lower support (6), and the total positive conducting strip (1) and the battery cell lower support (6) form a dismounting structure through the battery cell upper support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121837514.4U CN215816049U (en) | 2021-08-06 | 2021-08-06 | Structure for improving temperature of battery pack by using phase-change material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121837514.4U CN215816049U (en) | 2021-08-06 | 2021-08-06 | Structure for improving temperature of battery pack by using phase-change material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215816049U true CN215816049U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121837514.4U Active CN215816049U (en) | 2021-08-06 | 2021-08-06 | Structure for improving temperature of battery pack by using phase-change material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215816049U (en) |
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2021
- 2021-08-06 CN CN202121837514.4U patent/CN215816049U/en active Active
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