CN219801059U - Battery box, battery pack and automobile - Google Patents
Battery box, battery pack and automobile Download PDFInfo
- Publication number
- CN219801059U CN219801059U CN202320811720.0U CN202320811720U CN219801059U CN 219801059 U CN219801059 U CN 219801059U CN 202320811720 U CN202320811720 U CN 202320811720U CN 219801059 U CN219801059 U CN 219801059U
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- China
- Prior art keywords
- hole
- heat insulation
- insulation pad
- cold plate
- box frame
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- 238000009413 insulation Methods 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000565 sealant Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery box, a battery pack and an automobile, and relates to the field of automobile parts. According to the scheme, the connecting piece sequentially passes through the cold plate, the through hole and the box frame to realize fixed connection, the connecting piece passes through the through hole on the heat insulation pad, the heat insulation pad does not need to be deformed and inserted into the first connecting hole of the box frame along with the connecting piece, the connection reliability of the connecting piece and the first connecting hole is ensured, the heat insulation pad with larger thickness can be arranged, and the heat insulation effect between the cold plate and the box frame is improved.
Description
Technical Field
The utility model relates to the field of automobile parts, in particular to a battery box, a battery pack and an automobile.
Background
The electric automobile is one of the vehicles of people's daily trip, and the electric automobile generally adopts the battery package as the power supply, and the performance of battery package is vital. The battery package includes battery box and inside battery module, the box frame of current battery box generally adopts aluminium alloy frame construction, it is connected with the cold plate through the heat insulating mattress, FDS screw (stream bores the screw) is passed the cold plate in order to extrude the heat insulating mattress to the screw hole of box frame, in order to realize the fixed between cold plate, heat insulating mattress and the box frame three, because utilize the friction heat softening heat insulating board that FDS screw high-speed rotation produced, the heat insulating mattress warp in order to be crowded into the screw hole of box frame, it is less to need the thickness setting of heat insulating mattress under the prerequisite of satisfying the connection fastness, but so, the thermal insulation effect between cold plate and the box frame is unobvious, the thermal insulation performance of battery package receives certain influence.
Disclosure of Invention
The utility model aims to solve the technical problems of unsatisfactory heat insulation effect between the existing cold plate and the aluminum profile frame and poor heat insulation performance of a battery pack.
In a first aspect, the utility model provides a battery box, which comprises a box frame, a cold plate, a heat insulation pad and a connecting piece, wherein the cold plate is arranged on one side of the box frame, the heat insulation pad is positioned between the box frame and the cold plate, a through hole is formed in the heat insulation pad, a first connecting hole corresponding to the through hole is formed in the box frame, a second connecting hole corresponding to the through hole is formed in the cold plate, and the connecting piece sequentially penetrates through the second connecting hole, the through hole and the first connecting hole so as to connect the cold plate, the heat insulation pad and the box frame.
According to the battery box body disclosed by the utility model, the heat insulation pad is arranged between the box body frame and the cold plate, the box body frame is connected with the cold plate through the heat insulation pad, so that heat insulation between the cold plate and the box body frame is realized, as the heat insulation pad is provided with the through holes, the connecting piece sequentially passes through the second connecting hole on the cold plate, the through holes and the first connecting hole on the box body frame, so that fixed connection among the cold plate, the heat insulation pad and the box body frame is realized, the connecting piece passes through the through holes on the heat insulation pad, the heat insulation pad does not need to be deformed and is inserted into the first connecting hole of the box body frame along with the connecting piece, the connection reliability of the connecting piece and the first connecting hole is ensured, and on the basis, the heat insulation pad with larger thickness can be arranged, the heat insulation effect between the cold plate and the box body frame is improved, and the heat insulation performance of a battery pack is improved.
Optionally, the connecting piece includes a rivet nut and a bolt, the rivet nut is fixed in the first connecting hole, and the bolt sequentially passes through the second connecting hole, the through hole and the rivet nut.
Optionally, one end of the blind rivet nut is provided with a boss, the boss is arranged in the through hole, the height of the boss is smaller than or equal to the depth of the through hole, and the diameter of the boss is larger than the diameter of the first connecting hole.
Optionally, the connector is an FDS screw.
Optionally, the heat insulation pad is a plastic heat insulation pad, and the thickness of the heat insulation pad is greater than 1mm.
Optionally, a sealant is disposed between the cold plate and the heat insulation pad, and/or a sealant is disposed between the heat insulation pad and the frame of the box body.
Optionally, a groove is formed in the outer side face of the frame of the box body along the circumferential direction, the groove is matched with the shape of the heat insulation pad, and the heat insulation pad is arranged in the groove.
Optionally, the battery box further comprises a sealing strip, the sealing strip is located at the inner side of the heat insulation pad, and the box frame is in sealing connection with the cold plate through the sealing strip.
In a second aspect, the present utility model provides a battery pack, including the battery case described above. The battery pack has the same advantages as the battery case as described above compared to the prior art, and the description thereof will not be repeated.
In a third aspect, the present utility model provides an automobile comprising the battery pack. The automobile has the same advantages as the battery pack described above over the prior art, and the description thereof will not be repeated.
Drawings
Fig. 1 is a partially enlarged view of a first battery case according to an embodiment of the present utility model;
fig. 2 is a partially enlarged view of a second battery case according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a heat insulation mat according to an embodiment of the present utility model;
fig. 4 is an exploded view of a first battery case or a second battery case (with connectors removed) according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a frame of the box body; 11. a first connection hole; 2. a cold plate; 21. a second connection hole; 3. a heat insulating mat; 31. a through hole; 41. pulling and riveting a nut; 411. a boss; 42. a bolt; 43. FDS screws; 5. and (5) a sealing strip.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "coupled," and "mated" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
In addition, in the description of the present utility model, it should be noted that terms such as "upper", "lower", "front", "rear", etc. in the embodiments indicate terms of orientation, and only for simplifying the positional relationship of the description based on the drawings of the specification, it does not represent that the elements and devices etc. referred to must be operated according to the operations and methods and configurations defined in the specific orientation and limitation of the present utility model, and such orientation terms do not constitute limitations of the present utility model.
Herein, a coordinate system XYZ is established, in which the forward direction of the X-axis represents the front, the reverse direction of the X-axis represents the rear, the forward direction of the Y-axis represents the left, the reverse direction of the Y-axis represents the right, the forward direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.
As shown in fig. 1-4, the battery box according to the embodiment of the utility model includes a box frame 1, a cold plate 2, a heat insulation pad 3 and a connecting piece, wherein the cold plate 2 is disposed at one side of the box frame 1, the heat insulation pad 3 is disposed between the box frame 1 and the cold plate 2, a through hole 31 is disposed on the heat insulation pad 3, a first connecting hole 11 corresponding to the through hole 31 is disposed on the box frame 1, a second connecting hole 21 corresponding to the through hole 31 is disposed on the cold plate 2, and the connecting piece sequentially passes through the second connecting hole 21, the through hole 31 and the first connecting hole 11 to connect the cold plate 2, the heat insulation pad 3 and the box frame 1.
In this embodiment, the box frame 1 may be a rectangular frame or a square frame, the bottom of the box frame 1 is connected with the cold plate 2, the box frame 1 is in contact with the external environment of the vehicle, the heat of the cold plate 2 is transferred to the external environment of the vehicle through the box frame 1, and the heat transfer between the cold plate 2 and the box frame 1 is reduced by adding the heat insulation pad 3 between the cold plate 2 and the box frame 1 and using the heat insulation pad 3.
Still further, be provided with through-hole 31 on the heat insulating mattress 3, the connecting piece passes through the second connecting hole 21 on cold plate 2 in proper order, through-hole 31 and the first connecting hole 11 on box frame 1, in order to realize the fixed connection between cold plate 2, heat insulating mattress 3 and the box frame 1, the connecting piece passes in the through-hole 31 on the heat insulating mattress 3, heat insulating mattress 3 need not warp and inserts in the first connecting hole 11 of box frame 1 along with the connecting piece together, ensure the connection reliability of connecting piece and first connecting hole 11, can set up the heat insulating mattress 3 of bigger thickness on this basis, promote the thermal-insulated effect between cold plate 2 and the box frame 1, improve the thermal insulation performance of battery package, reduce the energy consumption of battery package, improve the vehicle continuation mileage in winter.
Here, the connecting piece may have a rod-shaped structure, the first connecting hole 11 and the second connecting hole 21 are matched with different positions of the connecting piece to press the heat insulation pad 3 to the frame 1 of the box body through the cold plate 2, and the first connecting hole 11 and the second connecting hole 21 may be threaded holes or through holes; the through hole 31 may be of any shape, and the size of the through hole 31 is slightly larger than the cross-sectional size of the connection member so that the connection member can smoothly pass through the through hole 31 to be inserted into the first connection hole 11.
As shown in fig. 1, optionally, the connecting member includes a rivet nut 41 and a bolt 42, wherein the rivet nut 41 is fixed in the first connecting hole 11, and the bolt 42 sequentially passes through the second connecting hole 21, the through hole 31, and the rivet nut 41.
In this embodiment, the rivet nut 41 may be inserted into the first connection hole 11 and welded to the first connection hole 11, the rivet nut 41 is provided with a threaded hole penetrating therethrough along the axial direction, the second connection hole 21 is a threaded hole, and the bolt 42 is inserted into the rivet nut 41 after passing through the second connection hole 21.
Here, a spacer may be provided between the end of the bolt 42 and the cold plate 2, and the bolt 42 passes through the spacer, the second connection hole 21, and the rivet nut 41 in order.
As shown in fig. 1, optionally, one end of the blind rivet nut 41 has a boss 411, the boss 411 is disposed in the through hole 31, the height of the boss 411 is less than or equal to the depth of the through hole 31, and the diameter of the boss 411 is greater than the diameter of the first connection hole 11.
In this embodiment, the rivet nut 41 is in a stepped structure, and includes a cylindrical nut body and a boss 411 at one end, where the nut body is connected to the first connection hole 11, the boss 411 is inserted into the through hole 31 downward, the through hole 31 penetrates through the heat insulation pad 3 in the vertical direction, the depth of the through hole 31 is consistent with the thickness of the heat insulation pad 3, and if the height of the boss 411 is greater than the depth of the through hole 31, that is, the height of the boss 411 is greater than the thickness of the heat insulation pad 3, the cold plate 2 cannot press the heat insulation pad 3 to the box frame 1 when screwing the bolt 42.
Conversely, if the height of the boss 411 is less than or equal to the depth of the through hole 31, that is, if the height of the boss 411 is not greater than the depth of the through hole 31, the cold plate 2 may press the heat insulation pad 3 against the case frame 1 when the bolts 42 are tightened, so that the upper and lower end surfaces of the heat insulation pad 3 are reliably contacted with the case frame 1 and the cold plate 2. Preferably, the height of the boss 411 is slightly smaller than the depth of the through hole 31.
Here, the diameter of the boss 411 is larger than that of the first coupling hole 11, and the rivet nut 41 is restricted from being pulled out upward by the boss 411.
The diameter of the through hole 31 is greater than the diameters of the second connecting hole 21 and the first connecting hole 11, the diameter of the through hole 31 is greater than or equal to the diameter of the boss 411, and the diameter of the rivet nut 41 and the diameter of the second connecting hole 21 may be equal to the diameter of the bolt 42.
As shown in fig. 2, the attachment is optionally an FDS screw 43.
In this embodiment, the FDS screws sequentially pass through the second connection holes 21, the through holes 31, and the first connection holes 11, so as to achieve a firm connection between the cold plate 2, the heat insulation pad 3, and the box frame 1. Through opening hole 31 on heat insulating mattress 3, compare with the current technical scheme that does not open the through-hole on heat insulating mattress 3, the friction heat generation of directly utilizing the FDS screw makes heat insulating mattress 3 warp to make heat insulating mattress 3 insert first connecting hole 11 along with the FDS screw, improve the connection stability of FDS screw and first connecting hole 11.
Optionally, the heat insulation pad 3 is a plastic heat insulation pad, and the thickness of the heat insulation pad 3 is greater than 1mm.
In this embodiment, the plastic heat insulation pad may be made of a PC material, and has a thermal conductivity coefficient of about 0.2W/(m·k), and the thickness of the heat insulation pad 3 is greater than 1mm, so that the thickness is greater, the heat insulation effect is improved, and the heat transfer between the cold plate 2 and the box frame 1 can be effectively blocked. Preferably 2-3mm.
Optionally, a sealant is disposed between the cold plate 2 and the heat insulation pad 3, and/or a sealant is disposed between the heat insulation pad 3 and the box frame 1.
In this embodiment, the contact surfaces of the box frame 1 and the cold plate 2 are bonded by sealant, and the contact surfaces of the cold plate 2 and the heat insulation pad 3 are also bonded by sealant, wherein the sealant is structural sealant, so that the tightness between adjacent contact surfaces can be improved, and the load borne by the cold plate 2 can be transferred to the box frame 1 through the heat insulation pad 3.
As shown in fig. 1-2, optionally, a groove is circumferentially formed on the outer side surface of the frame 1 of the box, the groove matches with the shape of the heat insulation pad 3, and the heat insulation pad 3 is placed in the groove.
In this embodiment, a circle of rectangular groove is formed on an end surface of the box frame 1 contacting with the heat insulation pad 3, the heat insulation pad 3 is a frame type heat insulation pad and is placed in the groove, and an embedded installation mode is adopted, so that the heat insulation pad 3 is prevented from shifting, and the installation accuracy of the heat insulation pad 3 is improved.
As shown in fig. 1, 2 and 4, the battery box optionally further comprises a sealing strip 5, the sealing strip 5 is located at the inner side of the heat insulation pad 3, and the box frame 1 is in sealing connection with the cold plate 2 through the sealing strip 5.
In this embodiment, the sealing strip 5 is a frame structure, and is located at the inner side of the frame heat insulation pad, and the sealing strip 5 is disposed between the box frame 1 and the cold plate 2, and has a certain compression deformation amount, so as to play a role in enhancing the sealing effect between the box frame 1 and the cold plate 2.
The battery pack comprises the battery box body. The battery pack has the same advantages as the battery case as described above compared to the prior art, and the description thereof will not be repeated.
An automobile according to still another embodiment of the present utility model includes the above-described battery pack. The automobile has the same advantages as the battery pack described above over the prior art, and the description thereof will not be repeated.
Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. The utility model provides a battery box, its characterized in that, includes box frame (1), cold plate (2), heat insulating mattress (3) and connecting piece, one side of box frame (1) is equipped with cold plate (2), heat insulating mattress (3) are located box frame (1) with between cold plate (2), be equipped with through-hole (31) on heat insulating mattress (3), be equipped with on box frame (1) with first connecting hole (11) corresponding to through-hole (31), be equipped with on cold plate (2) with second connecting hole (21) corresponding to through-hole (31), the connecting piece passes in proper order second connecting hole (21) through-hole (31) with first connecting hole (11), with cold plate (2) heat insulating mattress (3) and box frame (1) are connected.
2. The battery box according to claim 1, wherein the connecting piece comprises a rivet nut (41) and a bolt (42), the rivet nut (41) is fixed in the first connecting hole (11), and the bolt (42) sequentially passes through the second connecting hole (21), the through hole (31) and the rivet nut (41).
3. The battery box according to claim 2, characterized in that one end of the rivet nut (41) has a boss (411), the boss (411) is placed in the through hole (31), the height of the boss (411) is smaller than or equal to the depth of the through hole (31), and the diameter of the boss (411) is larger than the diameter of the first connection hole (11).
4. The battery box according to claim 1, characterized in that the connection piece is an FDS screw (43).
5. The battery box according to any of claims 1-4, characterized in that the heat insulation pad (3) is a plastic heat insulation pad, and the thickness of the heat insulation pad (3) is larger than 1mm.
6. Battery box according to any of claims 1-4, characterized in that a sealing glue is arranged between the cold plate (2) and the heat insulation pad (3) and/or a sealing glue is arranged between the heat insulation pad (3) and the box frame (1).
7. The battery box according to claim 1, characterized in that a groove is circumferentially arranged on the outer side surface of the box frame (1), the groove is matched with the shape of the heat insulation pad (3), and the heat insulation pad (3) is arranged in the groove.
8. The battery box according to claim 7, further comprising a sealing strip (5), wherein the sealing strip (5) is located at the inner side of the heat insulation pad (3), and the box frame (1) is in sealing connection with the cold plate (2) through the sealing strip (5).
9. A battery pack comprising the battery case according to any one of claims 1 to 8.
10. An automobile comprising the battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320811720.0U CN219801059U (en) | 2023-04-12 | 2023-04-12 | Battery box, battery pack and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320811720.0U CN219801059U (en) | 2023-04-12 | 2023-04-12 | Battery box, battery pack and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219801059U true CN219801059U (en) | 2023-10-03 |
Family
ID=88156725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320811720.0U Active CN219801059U (en) | 2023-04-12 | 2023-04-12 | Battery box, battery pack and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219801059U (en) |
-
2023
- 2023-04-12 CN CN202320811720.0U patent/CN219801059U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |