CN215771288U - Power battery system insulation construction - Google Patents
Power battery system insulation construction Download PDFInfo
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- CN215771288U CN215771288U CN202121828377.8U CN202121828377U CN215771288U CN 215771288 U CN215771288 U CN 215771288U CN 202121828377 U CN202121828377 U CN 202121828377U CN 215771288 U CN215771288 U CN 215771288U
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- power battery
- heat insulation
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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 heat insulation structure of a power battery system, which comprises a battery pack, wherein the battery pack comprises a group of battery modules, a side heat insulation layer and a cushion layer, the side heat insulation layer is arranged corresponding to the side surface of the battery module positioned on the outermost side, the cushion layer is positioned below the group of battery modules, the cushion layer comprises a bottom heat insulation pad and a bottom heat conduction pad, and the bottom heat insulation pad is positioned below the battery module positioned on the outermost side. The power battery system is reasonable in design of a heat insulation structure, and heat insulation cotton back glue is added to a module needing heat insulation and is adhered to a side packing belt; the heat-insulating cotton at the bottom of the module with two layers needing heat conduction is replaced by a heat-conducting pad, so that the temperature difference of the whole package is reduced, and the service life and the safety of the power battery are improved; and the structure is simple and the cost is low.
Description
Technical Field
The utility model relates to the technical field of new energy automobiles, in particular to a heat insulation structure of a power battery system.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is widely applied to various current product devices requiring battery power supply, and is one of the most practical power supplies. In the service environment of the lithium battery, the temperature has the greatest influence on the charge and discharge performance of the lithium battery. The interface between the electrode and the electrolyte is regarded as the heart of the battery, and the temperature mainly affects the reaction rate of the electrode and the transmission speed of the electrolyte, so that a proper temperature environment is the key point for maintaining the charge and discharge performance of the lithium battery. If the temperature drops, the reaction rate of the electrode drops, the discharge current decreases, and generally the discharge voltage of the lithium battery does not rise, which inevitably leads to the reduction of the output power of the lithium battery. If the temperature rises, the output power of the lithium battery is increased. Meanwhile, the temperature also affects the transfer rate of the electrolyte, and further affects the charge and discharge performance of the lithium battery. In general, lithium batteries can be between-20 ℃ and 60 ℃. When the ambient temperature is lower than-20 ℃, the electrolyte solution reaches the freezing point, the charging speed of the battery is also greatly reduced, for example, when the ambient temperature is-40 ℃, the lithium ion battery can only discharge 10-30% of electric quantity. And when ambient temperature is higher than 60 ℃, the electrochemical balance in the lithium battery can be destroyed, side reactions are caused, the service life of the lithium battery can be shortened, and even the risk of lithium battery explosion is caused. In order to enable the lithium battery to be used in a low-temperature environment, the traditional solution is to change the material inside the lithium battery, and use a special material to manufacture the battery, which is called as a "low-temperature battery", so that the battery can be used in a low-temperature environment. However, the manufacturing process of the low-temperature battery is difficult, the low-temperature battery is expensive, the low-temperature threshold capable of bearing the low-temperature battery is limited, and the low-temperature battery cannot bear high-temperature impact in an environment with large temperature difference.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a heat preservation structure of a power battery system so as to achieve the purposes of reducing the temperature difference of the whole pack and improving the service life and safety of the power battery.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
this power battery system insulation construction, including the battery package, the battery package includes a set of battery module, still includes side heat preservation and bed course, the battery module side setting that the side heat preservation corresponds to be located the outside, the bed course is located the below of a set of battery module, and the bed course includes bottom heat preservation pad and bottom heat conduction pad, and bottom heat preservation pad is located the below of outside battery module.
Further or preferred:
the bottom heat preservation pad is two, and the bottom heat conduction pad is located between two bottom heat preservation pads.
And the inner side of the side surface heat-insulating layer is provided with a heat-insulating layer back adhesive for positioning at the side surface of the battery module.
The side heat preservation and the bottom heat preservation cushion are the same in structure and respectively comprise a foaming layer and a composite glass fiber cloth layer, and the composite glass fiber cloth layer is arranged on the outer surface of the foaming layer.
The heat conductivity coefficients of the side heat-insulating layer and the bottom heat-insulating pad are less than or equal to 0.08W/m.K.
The heat conductivity coefficient of the bottom heat conducting pad is more than or equal to 1.5W/m.K.
Compared with the prior art, the utility model has the following advantages:
the power battery system is reasonable in design of a heat insulation structure, and heat insulation cotton back glue is added to a module needing heat insulation and is adhered to a side packing belt; the heat-insulating cotton at the bottom of the module with two layers needing heat conduction is replaced by a heat-conducting pad, so that the temperature difference of the whole package is reduced, and the service life and the safety of the power battery are improved; and the structure is simple and the cost is low.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of a thermal insulation structure of the present invention.
FIG. 2 is a schematic view of the thermal insulation structure of the present invention.
In the figure:
1. the battery pack comprises a battery pack, 2, a side heat-insulating layer, 3, a heat-insulating layer gum, 4, a bottom heat-insulating pad and 5, a bottom heat-conducting pad.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the heat preservation structure of the power battery system comprises a battery pack 1, a side heat preservation layer 2 and a cushion layer, wherein the battery pack comprises a group of battery modules, the side heat preservation layer is arranged on the side face of the battery module located on the outermost side correspondingly, the cushion layer is located below the group of battery modules, the cushion layer comprises a bottom heat preservation pad 4 and a bottom heat conduction pad 5, and the bottom heat preservation pad is located below the battery module located on the outermost side.
The bottom heat-insulating pads 4 are two pieces, and the bottom heat-conducting pad 5 is positioned between the two pieces of bottom heat-insulating pads; adding heat-insulating cotton back glue to the module needing heat insulation, and sticking the back glue to the side packing belt; the heat-insulating cotton at the bottom of the module with two layers needing heat conduction is replaced by the heat-conducting pad, so that the temperature difference of the whole package is reduced, and the service life and the safety of the power battery are improved.
The inboard of side heat preservation is equipped with the heat preservation gum 3 that is used for fixing a position in the battery module side, pastes in side packing area, and the location is easy and simple to handle.
The side heat-insulating layer and the bottom heat-insulating pad are identical in structure and respectively comprise a foaming layer and a composite glass fiber cloth layer, the composite glass fiber cloth layer is arranged on the outer surface of the foaming layer, the foaming layer is made of melamine foaming materials, and the heat conductivity coefficients of the side heat-insulating layer and the bottom heat-insulating pad are less than or equal to 0.08W/m.K.
The bottom of the module needing heat conduction is replaced by a heat conduction pad, and the heat conduction coefficient of the bottom heat conduction pad is more than or equal to 1.5W/m.K. Realize power lithium cell low temperature continuation of the journey and promote, find the great module of whole package difference in temperature through experiment verification and emulation and keep warm and the mode of heat conduction, reduce the difference in temperature of whole package, improve power battery's life and security.
Preferred specific examples are:
the battery pack parameters of the pure electric vehicle are as follows:
table 1 shows a comparison between the simulation before and after the battery parameter table using the measures of the present invention:
table 2 is a front and rear simulation comparison table
The power battery system adopting the heat insulation structure provided by the utility model has the advantages that the temperature difference is obviously improved, the temperature difference of the whole pack is reduced, and the service life and the safety of the power battery are improved.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The utility model is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the utility model is not limited by the above-mentioned manner, and it is within the scope of the utility model to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (6)
1. The utility model provides a power battery system insulation construction, includes the battery package, the battery package is including a set of battery module, its characterized in that: still include side heat preservation and bed course, the side heat preservation corresponds the battery module side setting that is located the outside, the bed course is located the below of a set of battery module, and the bed course includes bottom heat preservation pad and bottom heat conduction pad, and bottom heat preservation pad is located the below of outside battery module.
2. The power battery system insulation structure of claim 1, wherein: the bottom heat preservation pad is two, and the bottom heat conduction pad is located between two bottom heat preservation pads.
3. The power battery system insulation structure of claim 1, wherein: and the inner side of the side surface heat-insulating layer is provided with a heat-insulating layer back adhesive for positioning at the side surface of the battery module.
4. The power battery system insulation structure of claim 1, wherein: the side heat preservation and the bottom heat preservation cushion are the same in structure and respectively comprise a foaming layer and a composite glass fiber cloth layer, and the composite glass fiber cloth layer is arranged on the outer surface of the foaming layer.
5. The power battery system insulation structure of claim 1, wherein: the heat conductivity coefficients of the side heat-insulating layer and the bottom heat-insulating pad are less than or equal to 0.08W/m.K.
6. The power battery system insulation structure of claim 1, wherein: the heat conductivity coefficient of the bottom heat conducting pad is more than or equal to 1.5W/m.K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828377.8U CN215771288U (en) | 2021-08-06 | 2021-08-06 | Power battery system insulation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828377.8U CN215771288U (en) | 2021-08-06 | 2021-08-06 | Power battery system insulation construction |
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| Publication Number | Publication Date |
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| CN215771288U true CN215771288U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121828377.8U Active CN215771288U (en) | 2021-08-06 | 2021-08-06 | Power battery system insulation construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240784A1 (en) * | 2022-06-14 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | Prefabricated energy storage compartment, and energy storage system |
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2021
- 2021-08-06 CN CN202121828377.8U patent/CN215771288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240784A1 (en) * | 2022-06-14 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | Prefabricated energy storage compartment, and energy storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230519 Address after: Floor 18, Building 13, Science and Technology Industrial Park, No. 717 Zhongshan South Road, Wuhu High tech Industrial Development Zone, Yijiang District, Wuhu City, Anhui Province, 241000 Patentee after: Wuhu Tairui Automobile Co.,Ltd. Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Patentee before: Chery Commercial Vehicles (Anhui) Co., Ltd. |
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| TR01 | Transfer of patent right |