CN214625255U - Battery pack and vehicle - Google Patents
Battery pack and vehicle Download PDFInfo
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- CN214625255U CN214625255U CN202120639622.4U CN202120639622U CN214625255U CN 214625255 U CN214625255 U CN 214625255U CN 202120639622 U CN202120639622 U CN 202120639622U CN 214625255 U CN214625255 U CN 214625255U
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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 present disclosure relates to a battery pack and a vehicle, the battery includes a casing, a battery cell, an internal thermal insulation structure and an external thermal insulation structure, the casing has a first side wall and a second side wall which are back to back each other, the battery cell is packaged in the casing, at least part of the internal thermal insulation structure is arranged between the battery cell and the first side wall, at least part of the external thermal insulation structure is arranged on the outer surface of the second side wall. Because set up inside insulation construction and outside insulation construction respectively and come to keep warm to the battery package, make its structural design more nimble, for example, set up insulation construction in the outside of the second lateral wall of casing, its inboard just can with electric core or other inner structure snap-on, improve the stability of internals.
Description
Technical Field
The present disclosure relates to the technical field of vehicle battery packs, and particularly, to a battery pack and a vehicle.
Background
At present, new energy vehicles such as electric vehicles are widely concerned by governments and large social enterprises due to the characteristics of low emission, good environmental protection, low maintenance cost and the like, and in order to improve the performance of the new energy vehicles, the performance of a battery pack, which is the power core of the new energy vehicles, is improved. However, there are many problems in the practical popularization and use of the electric vehicle, for example, the electric vehicle has a significantly shortened driving range in winter and poor low-temperature dynamic performance, and in addition, the low temperature of the battery pack also affects the charging duration and increases the energy consumption. The existing scheme for preserving the heat of the battery pack is that a heat preservation layer is usually arranged inside a shell of the battery pack so as to coat the whole battery core, but the stability of the battery core is affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery package and vehicle, this battery package thermal insulation performance is good, and structural design is nimble, and structural stability is strong.
In order to achieve the above object, the present disclosure provides a battery pack, where the battery includes a casing, a battery core, an internal thermal insulation structure, and an external thermal insulation structure, the casing has a first sidewall and a second sidewall that face away from each other, the battery core is packaged in the casing, at least a portion of the internal thermal insulation structure is disposed between the battery core and the first sidewall, and at least a portion of the external thermal insulation structure is disposed on an outer surface of the second sidewall.
Optionally, the internal insulation structure includes a main body disposed between the cell and the first sidewall, and an annular flange disposed around an edge of the main body, the annular flange being disposed around a periphery of the cell.
Optionally, a height of the annular flange relative to the body is less than or equal to a thickness of the cell.
Optionally, the housing further has a peripheral wall connecting the first side wall and the second side wall, the external thermal insulation structure includes a bottom plate and a ring-shaped side plate, the bottom plate is disposed on an outer surface of the second side wall, and the ring-shaped side plate is sleeved on the peripheral wall.
Optionally, the bottom plate is a foamed non-metal plate and includes an inner surface layer, an outer surface layer, and an intermediate layer, the inner surface layer is attached to the second sidewall, and the intermediate layer is formed with a plurality of foamed air holes.
Optionally, the battery pack further includes two insulators disposed between the battery core and the second side wall, and each insulator is configured in an elongated shape and disposed on two sides of the battery core, respectively, so that the battery core is spaced apart from the casing.
Optionally, the casing further has a peripheral wall connecting the first side wall and the second side wall, the insulating member includes a first strip and a second strip bent into a V shape, the first strip is disposed between the battery cell and the second side wall, and the second strip is disposed between the battery cell and the peripheral wall.
Optionally, the battery pack further includes a cooling plate, the cooling plate is configured in a flat plate shape and located between the electric core and the internal heat insulation structure, a flow passage allowing the cooling liquid to pass through is formed inside the cooling plate, a cooling liquid inlet and a cooling liquid outlet are arranged at two ends of the flow passage, and the cooling liquid inlet and the cooling liquid outlet are arranged to penetrate through the casing and are connected with the external heat management device.
Optionally, the housing includes a first housing configured as the first side wall and a second housing configured as the second side wall and a peripheral wall of the battery pack, the second housing having an edge beam formed thereon for connection to an external structure.
Another aspect of the present disclosure also provides a vehicle including the battery pack as described above. Through the technical scheme, the battery pack in the embodiment of the disclosure comprises the internal heat insulation structure and the external heat insulation structure, the internal heat insulation structure is arranged on the inner side of the first side wall of the shell, the speed of the heat of the battery cell consumed by the first side wall is reduced, the external heat insulation structure is arranged on the second side wall, the speed of the heat of the battery cell consumed by the second side wall can be reduced, and therefore the heat of the battery cell can be insulated from both sides, the temperature of the battery cell is maintained in the temperature range of the better temperature, the overall endurance of the battery pack is improved, the energy consumption can be reduced when the battery pack is charged, and the charging time is shortened. In addition, because set up inside insulation construction and outside insulation construction respectively and come to keep warm to the battery package, make its structural design more nimble, for example, set up insulation construction in the outside of the second lateral wall of casing, its inboard just can with electric core or other inner structure snap-on, improve the stability of internals.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is an external structural view of a battery pack in one embodiment of the present disclosure;
fig. 2 is an exploded schematic view of a battery pack in one embodiment of the present disclosure;
fig. 3 is an exploded schematic view of a battery pack in another embodiment of the present disclosure;
fig. 4 is a longitudinal sectional view of a battery pack in one embodiment of the present disclosure.
Description of the reference numerals
1. A housing; 11. a first side wall; 12. a second side wall; 13. a peripheral wall; 14. a first housing; 15. a second housing; 16. a boundary beam; 17. a first via hole; 18. a second via hole; 2. an electric core; 3. a cooling plate; 31. a coolant inlet; 32. a coolant outlet; 4. an internal insulation structure; 41. a main body; 42. an annular flange; 5. an external insulation structure; 51. a base plate; 52. an annular side plate; 6. an insulating member; 61. a first strip; 62. a second strip.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise specified, use of directional terms such as "inner" and "outer" refers to the interior and exterior of the contours of the respective component or structure. Terms such as "first," "second," and the like, are used herein to distinguish one element from another, and are not necessarily sequential or significant. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.
The embodiment of the present disclosure provides a battery pack, as shown in fig. 1 to 4, the battery includes a casing 1, a battery cell 2, an internal thermal insulation structure 4, and an external thermal insulation structure 5, the casing 1 has a first side wall 11 and a second side wall 12 facing away from each other, the battery cell 2 is packaged in the casing 1, at least part of the internal thermal insulation structure 4 is disposed between the battery cell 2 and the first side wall 11, and at least part of the external thermal insulation structure 5 is disposed on an outer surface of the second side wall 12. The internal heat insulation structure 4 is at least partially arranged between the battery cell 2 and the first side wall 11, that is, the internal heat insulation structure 4 may be completely located between the battery cell 2 and the first side wall 11, or the internal heat insulation structure 4 may be partially located between the battery cell 2 and the first side wall 11, and the other part is located between the battery cell 2 and the other side walls of the battery pack; similarly, the fact that at least part of the external insulation structure 5 is disposed on the outer surface of the second side wall 12 means that the external insulation structure 5 may be entirely disposed on the outer surface of the second side wall 12, or alternatively, the external insulation structure 5 may be partially disposed on the outer surface of the second side wall 12.
Through the technical scheme, the battery pack in the embodiment of the disclosure includes internal insulation structure 4 and external insulation structure 5, internal insulation structure 4 is arranged on the inner side of first side wall 11 of casing 1, the speed of heat of battery cell 2 consumed through first side wall 11 is reduced, and external insulation structure 5 is arranged on second side wall 12, the speed of heat of battery cell 2 consumed through second side wall 12 can also be reduced, thus, heat of battery cell 2 can be preserved from both sides, the temperature of battery cell 2 is maintained in the temperature range of the preferred temperature, the overall endurance of the battery pack is improved, the energy consumption can be reduced when the battery pack is charged, and the charging time is shortened. In addition, because set up inside insulation construction 4 and outside insulation construction 5 respectively and come to keep warm to the battery package, make its structural design more nimble, for example, set up insulation construction in the outside of casing 1's second lateral wall 12, its inboard just can with electric core 2 or other internal structure snap-on, improve the stability of internals.
The internal insulation structure 4 and the external insulation structure 5 in the embodiment of the present disclosure may be made of various insulation materials such as insulation cotton, PU material, etc., which is not limited in the present disclosure.
The internal thermal insulation material may be configured in any suitable configuration as desired, and in one example of the present disclosure, as shown in fig. 4, the internal thermal insulation structure 4 includes a main body 41 and an annular flange 42 disposed around an edge of the main body 41, the main body 41 is disposed between the battery cell 2 and the first side wall 11, and the annular flange 42 is disposed around a periphery of the battery cell 2. That is, the internal thermal insulation structure 4 is formed in a box shape with one side opened so that the battery cell 2 can be entirely covered in the internal thermal insulation structure 4, and the thermal insulation effect can be improved, in which the main body 41 can prevent the heat of the battery cell 2 from being lost from the first side wall 11, and the annular flange 42 can prevent the heat of the battery cell 2 from being lost from the peripheral wall 13 connected to the first side wall 11.
In the disclosed embodiment, as shown in fig. 4, the height of the annular flange 42 relative to the main body 41 is less than or equal to the thickness of the battery cell 2, so as to avoid the internal thermal insulation structure 4 from affecting the stability of the battery cell 2.
In another embodiment of the present disclosure, the internal thermal insulation structure 4 may be configured in a flat plate shape, and may be interposed between the battery cell 2 and the first side wall 11 to be able to insulate one side surface of the battery cell 2.
The external thermal insulation structure 5 may be designed to have a suitable configuration according to the needs, which is not limited by the present disclosure. As shown in fig. 1 to 4, the housing 1 further has a peripheral wall 13 connecting the first side wall 11 and the second side wall 12, the external thermal insulation structure 5 includes a bottom plate 51 and a ring-shaped side plate 52, the bottom plate 51 is disposed on an outer surface of the second side wall 12, and the ring-shaped side plate 52 is sleeved on the peripheral wall 13. The bottom plate 51 can reduce the heat dissipation speed of the heat of the battery cell 2 from the second side wall 12, and the annular side plate 52 can reduce the heat dissipation speed of the heat from the peripheral wall 13, so that the heat preservation performance is improved.
It should be understood that the bottom plate 51 and the annular side plate 52 may be a split structure, which is convenient to be installed outside the housing 1; alternatively, the bottom plate 51 and the annular side plate 52 may be an integral structure, which enhances the stability of the external thermal insulation structure 5.
Through the shape characteristics of the internal heat insulation structure 4 and the external heat insulation structure 5, the battery pack can be subjected to omnibearing heat insulation covering, particularly, the internal heat insulation structure 4 and the external heat insulation structure 5 are arranged on one side of the peripheral wall 13 of the shell 1 of the battery pack, and the heat insulation performance of the heat insulation structure is improved.
In the embodiment of the present disclosure, as shown in fig. 4, the bottom plate 51 may be a foamed non-metal plate, and includes an inner surface layer, an outer surface layer and an intermediate layer, the inner surface layer is attached to the second sidewall 12, the intermediate layer is formed with a plurality of foamed air holes, the bottom plate 51 not only can play a role of heat preservation, but also can play a role of protecting the housing 1 of the battery pack, and the foamed air holes inside the bottom plate can also play a role of buffering and energy absorption for the battery pack. The bottom plate 51 is made of a non-metal material, and plays a certain role in reducing weight compared with the scheme that a metal shield is arranged outside the shell 1 in the related art.
As shown in fig. 2 to 4, the battery pack further includes two insulating members 6, the insulating members 6 are disposed between the battery cell 2 and the second side wall 12, and each insulating member 6 is configured as a strip and is disposed on two sides of the battery cell 2, so that the battery cell 2 is spaced apart from the casing 1, thereby preventing the battery cell 2 from generating an electric leakage or short circuit phenomenon and reducing an electrical fault; in addition, the insulating member 6 forms a gap between the battery cell 2 and the casing 1, and can block heat transfer between the battery cell 2 and the casing 1 by utilizing the characteristic of low thermal conductivity of air in the gap, thereby playing a role in assisting in heat preservation of the external heat preservation structure 5.
Since both sides of the battery cell 2 are usually provided with positive and negative electrodes, the insulator 6 may be configured to shield both sides of the battery cell 2 in order to prevent leakage of electricity from the positive and negative electrodes. Exemplarily, in the embodiment of the present disclosure, the insulating member 6 includes a first strip 61 and a second strip 62 bent in a V shape, the first strip 61 is disposed between the battery cell 2 and the second side wall 12 to space the battery cell 2 from the second side wall 12, and the second strip 62 is disposed between the battery cell 2 and the peripheral wall 13 to space the battery cell 2 from the peripheral wall 13, so that both the bottom wall and the side wall of the battery cell 2 can be considered by the V-shaped insulating member 6, and the insulating protection effect is enhanced.
As shown in fig. 4, the second strip 62 of the insulating member 6 may be disposed outside the internal thermal insulation structure 4, so that the thermal insulation structure and the battery cell 2 are attached more tightly, and the thermal insulation effect is ensured. Alternatively, the second strips 62 of the insulating member 6 may be disposed inside the internal heat-insulating structure 4, so as to improve the insulating effect, which is not limited by the present disclosure.
In one embodiment of the present disclosure, as shown in fig. 3, the battery pack further includes a cooling plate 3, the cooling plate 3 is configured as a flat plate and is located between the battery cell 2 and the internal heat insulation structure 4, a flow channel allowing a cooling liquid to pass through is formed inside the cooling plate 3, a cooling liquid inlet 31 and a cooling liquid outlet 32 are provided at two ends of the flow channel, and the cooling liquid inlet 31 and the cooling liquid outlet 32 are arranged to penetrate through the housing 1 and are connected to an external heat management device. The cooling plate 3 can be for the heat supply or the cooling of electric core 2 in the battery package, and inside insulation construction 4 can obstruct the heat exchange of cooling plate 3 and the first lateral wall 11 of casing 1, improves the efficiency of cooling plate 3 to the heat exchange of electric core 2.
Because cooling plate 3 is when being the cold supply of electricity core 2, probably make the moisture condensation around electricity core 2 for the drop of water and adhere to on cooling plate 3, consequently, in an example of this disclosure, heat preservation cotton can be chooseed for use to the material of inside insulation construction 4, and this heat preservation cotton has certain hydroscopicity, can reduce the influence of the steam on cooling plate 3 surface to electricity core 2.
In addition, some flame retardants can be added into the material of the internal heat-insulating structure 4 to prevent electric sparks caused by over-high temperature of the battery core 2, and certain flame retardant and heat insulation effects can be achieved after the battery core 2 is ignited.
In order to facilitate installation of the battery cell 2, the internal thermal insulation material and other components into the casing 1, the casing 1 in the embodiment of the present disclosure may be formed by splicing a plurality of parts, for example, as shown in fig. 2 and 3, the casing 1 includes a first casing 14 and a second casing 15, the first casing 14 is configured as a first side wall 11, the second casing 15 is configured as a second side wall 12 and a peripheral wall 13 of the battery pack, and the first casing 14 and the second casing 15 may be fixed together by various methods such as fastening or fastening.
In addition, the second case 15 is formed with an edge beam 16 for connection to an external structure, and the edge beam 16 can be connected to an external structure such as a vehicle frame to mount and fix the battery pack.
As shown in fig. 1, a first through hole 17 and a second through hole 18 are further opened in the peripheral wall 13 of the second housing 15, the first through hole 17 is used for allowing the coolant inlet 31 of the cooling plate 3 to pass through the housing 1, and the second through hole 18 is used for allowing the coolant outlet 32 of the cooling plate 3 to pass through the housing 1. The first via hole 17 and the second via hole 18 may be disposed on the same side of the housing 1 of the battery pack, or may be disposed on different sides, which is not limited in the present disclosure.
Another embodiment of the present disclosure also provides a vehicle including the battery pack as described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A battery pack, characterized in that, the battery includes casing (1), electricity core (2), inside insulation structure (4) and outside insulation structure (5), casing (1) has first lateral wall (11) and second lateral wall (12) that back to each other, electricity core (2) encapsulation is in casing (1), at least part setting of inside insulation structure (4) is in between electricity core (2) and first lateral wall (11), at least part setting of outside insulation structure (5) is in the surface of second lateral wall (12).
2. The battery pack according to claim 1, wherein the internal insulating structure (4) comprises a main body (41) and an annular flange (42) disposed around an edge of the main body (41), the main body (41) being disposed between the cell (2) and the first side wall (11), the annular flange (42) being disposed around a periphery of the cell (2).
3. The battery pack according to claim 2, wherein the height of the annular flange (42) relative to the main body (41) is less than or equal to the thickness of the cell (2).
4. The battery pack according to claim 1, wherein the case (1) further has a peripheral wall (13) connecting the first side wall (11) and the second side wall (12), and the external thermal insulation structure (5) comprises a bottom plate (51) and a ring-shaped side plate (52), the bottom plate (51) is disposed on an outer surface of the second side wall (12), and the ring-shaped side plate (52) is fitted over the peripheral wall (13).
5. The battery pack according to claim 4, wherein the bottom plate (51) is a foamed non-metal plate and includes an inner surface layer, an outer surface layer, and an intermediate layer, the inner surface layer being disposed to be attached to the second side wall (12), the intermediate layer being formed with a plurality of foamed air holes.
6. The battery pack according to claim 1, further comprising an insulating member (6), wherein the insulating member (6) is disposed between the battery cell (2) and the second side wall (12), the number of the insulating members (6) is two, and each of the insulating members (6) is configured in an elongated shape and is disposed on both sides of the battery cell (2), respectively, so that the battery cell (2) is spaced apart from the case (1).
7. The battery pack according to claim 6, wherein the case (1) further has a peripheral wall (13) connecting the first side wall (11) and the second side wall (12), and the insulating member (6) includes a first strip (61) and a second strip (62) bent in a V shape, the first strip (61) being disposed between the battery cell (2) and the second side wall (12), and the second strip (62) being disposed between the battery cell (2) and the peripheral wall (13).
8. The battery pack according to claim 1, further comprising a cooling plate (3), wherein the cooling plate (3) is configured into a flat plate shape and is located between the battery core (2) and the internal heat insulation structure (4), a flow channel allowing a cooling liquid to pass through is formed inside the cooling plate (3), a cooling liquid inlet (31) and a cooling liquid outlet (32) are arranged at two ends of the flow channel, and the cooling liquid inlet (31) and the cooling liquid outlet (32) are arranged to penetrate out of the casing (1) and are connected with the external heat management device.
9. Battery pack according to any of claims 1 to 8, characterized in that the housing (1) comprises a first housing (14) and a second housing (15), the first housing (14) being configured as the first side wall (11), the second housing (15) being configured as the second side wall (12) and the peripheral wall (13) of the battery pack, the second housing (15) being formed with an edge beam (16) for connection to an external structure.
10. A vehicle, characterized in that the vehicle comprises a battery pack according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120639622.4U CN214625255U (en) | 2021-03-29 | 2021-03-29 | Battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120639622.4U CN214625255U (en) | 2021-03-29 | 2021-03-29 | Battery pack and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214625255U true CN214625255U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120639622.4U Active CN214625255U (en) | 2021-03-29 | 2021-03-29 | Battery pack and vehicle |
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| Country | Link |
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| CN (1) | CN214625255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173710A1 (en) * | 2022-06-13 | 2023-09-21 | 湖北亿纬动力有限公司 | Liquid cooling plate assembly, battery box and battery pack |
-
2021
- 2021-03-29 CN CN202120639622.4U patent/CN214625255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173710A1 (en) * | 2022-06-13 | 2023-09-21 | 湖北亿纬动力有限公司 | Liquid cooling plate assembly, battery box and battery pack |
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Address after: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: SVOLT Energy Technology Co.,Ltd. Address before: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: SVOLT Energy Technology Co.,Ltd. |