CN220138450U - Heat preservation block, heat preservation layer, box assembly and power battery of power battery box - Google Patents
Heat preservation block, heat preservation layer, box assembly and power battery of power battery box Download PDFInfo
- Publication number
- CN220138450U CN220138450U CN202320417244.4U CN202320417244U CN220138450U CN 220138450 U CN220138450 U CN 220138450U CN 202320417244 U CN202320417244 U CN 202320417244U CN 220138450 U CN220138450 U CN 220138450U
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- China
- Prior art keywords
- heat preservation
- block
- power battery
- heat
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004321 preservation Methods 0.000 title claims abstract description 88
- 238000009413 insulation Methods 0.000 claims abstract description 81
- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 239000006260 foam Substances 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- NISOCYUAQBTSBZ-UHFFFAOYSA-N n-methyl-n-(2-phenylethyl)prop-2-yn-1-amine Chemical compound C#CCN(C)CCC1=CC=CC=C1 NISOCYUAQBTSBZ-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005728 strengthening Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to the technical field of batteries, in particular to a heat insulation block, a heat insulation layer, a box assembly and a power battery of a power battery box body, and aims to solve the problem that the heat insulation effect of the heat insulation block of the existing power battery box body is poor. For this purpose, the heat-insulating block of the power battery box body is attached to the outer side of the box body, the heat-insulating block is integrally formed, the inner side surface of the heat-insulating block is matched with at least one part of the outer peripheral surface of the box body, and the shape of the heat-insulating block at least comprises two non-parallel surfaces; after the heat preservation piece adopts integral structure, need not adopt planar structure's heat preservation material to tailor the concatenation, just can laminate with some special archs, turning or strengthening rib on the box external surface, simple manufacture, laminating compactness is high, heat preservation effect preferred.
Description
Technical Field
The utility model relates to the technical field of batteries, and particularly provides a heat insulation block, a heat insulation layer, a box assembly and a power battery of a power battery box.
Background
With the rapid development of new energy industries, new energy automobiles have become a future development trend in the automobile field. The power battery is used as a main component of the new energy automobile, and the performance of the power battery is seriously degraded under the condition of low temperature, so that the power battery needs to be insulated. The power battery sets up in the box, and the outside of box can set up the heat preservation to avoid power battery temperature too low and influence performance.
At present, the heat insulation layer of the power battery box body is usually cut into a sheet-shaped structure by a traditional heat insulation material, and then is adhered to the outer side of the box body by back adhesive. Because flaky heat preservation material structure is comparatively single, and the external profile of power battery box is uneven, leads to the heat preservation to be difficult to cover the box completely, and the heat preservation effect is relatively poor.
Therefore, there is a need for a heat insulation block, a heat insulation layer, a box assembly and a power battery for a power battery box to improve the heat insulation effect of the heat insulation layer.
Disclosure of Invention
The utility model aims to solve the technical problems, namely the problem that the heat preservation effect of the heat preservation layer of the existing power battery box body is poor.
In a first aspect, the utility model provides a thermal insulation block of a power battery box, the thermal insulation block is attached to the outer side of the box, the thermal insulation block is integrally formed, the inner side surface of the thermal insulation block is matched with at least a part of the outer peripheral surface of the box, and the shape of the thermal insulation block at least comprises two non-parallel surfaces.
In the specific implementation mode of the heat insulation block of the power battery box body, the heat conductivity coefficient of the heat insulation block is 0.01W.m < -1 > K < -1 > to 0.5W.m < -1 > K < -1 >; and/or the density of the heat insulation block is 0.05 g.cm < -3 > to 1.5 g.cm < -3 >.
In the specific embodiment of the heat insulation block of the power battery box body, the heat insulation block is made of MPPE foam.
In the specific embodiment of the heat insulation block of the power battery box body, the inner surface of the heat insulation block is adhered to the outer surface of the box body.
In the specific embodiment of the heat insulation block of the power battery box body, the heat insulation block is connected with the box body through a fixing piece.
In the specific embodiment of the heat insulation block of the power battery box body, the fixing piece is a pin or a screw.
In the specific embodiment of the heat insulation block of the power battery box body, the periphery of the box body is convexly provided with the wing plates, the heat insulation block is arranged between the two wing plates, and the fixing piece penetrates through the wing plates and the heat insulation block.
In a second aspect, the utility model provides an insulation layer of a power battery box, the insulation layer is formed by splicing a plurality of insulation blocks, and the plurality of insulation blocks are wrapped at different positions of the outer peripheral surface of the box.
In a third aspect, the present utility model provides a housing assembly for a power cell, comprising: a case body formed with an accommodation space; the heat preservation layer is coated on the outer side of the box body.
In a fourth aspect, the present utility model provides a power cell comprising: the box assembly described above; and the battery cell is arranged in the accommodating space.
Compared with the prior art, the utility model has the following beneficial effects:
in a first aspect, the power battery box body heat-insulating block provided by the utility model is attached to the outer side of the box body, the heat-insulating block is integrally formed, the inner side surface of the heat-insulating block is matched with at least one part of the peripheral surface of the box body, and the shape of the heat-insulating block at least comprises two non-parallel surfaces; after the heat preservation piece adopts integral structure, need not adopt planar structure's heat preservation material to tailor the concatenation, just can laminate with some special archs, turning or strengthening rib on the box external surface, simple manufacture, laminating compactness is high, heat preservation effect preferred.
Still further, the heat preservation piece bonds and is connected through the mounting with the box, along with power battery's live time increases, even the gum between heat preservation piece and the box ages and drops, still can fix the heat preservation piece at the box outer peripheral face through the mounting to further reduce the possibility that the heat preservation piece breaks away from the box.
Furthermore, the heat preservation block is integrally formed through the die, so that the outline with more complex shape can be formed, the heat preservation block can be matched with the outline of the box with more complex shape, the attached tightness degree of the heat preservation block and the box is improved, and the aim of improving the heat preservation effect is fulfilled.
In a second aspect, the heat insulation layer of the power battery box body provided by the utility model is formed by splicing a plurality of heat insulation blocks, and the plurality of heat insulation blocks are wrapped at different positions of the outer peripheral surface of the box body, so that the installation difficulty of the heat insulation layer can be reduced, and the power battery box body can adapt to the box body with more complex outline shape of the outer peripheral surface.
Drawings
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a box assembly provided by the present utility model;
fig. 2 is an enlarged view at a portion a in fig. 1.
Reference numerals illustrate:
1. a case; 11. a wing plate; 2. a heat preservation layer; 21. a heat preservation block; 3. and a fixing piece.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of 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.
The utility model provides a power battery for solving the problem that the heat preservation effect of a heat preservation layer of the existing power battery box body is poor.
The power battery comprises a box body assembly and an electric core, wherein the box body assembly comprises a box body 1, and the electric core is installed and fixed in the box body 1, so that the electric core is kept in a stable state. The battery cells are provided with a plurality of battery cells which are sequentially arranged in the box body 1. The battery core comprises a bare cell, and the bare cell is formed by winding a lithium battery pole piece formed by laminating a positive pole piece, a negative pole piece and an isolating film. The battery cell is fragile in structure, and once the battery cell is impacted by the outside, the isolating film can be damaged, and the positive pole piece and the negative pole piece are short-circuited, so that the battery cell generates heat and even self-fires. The battery cell is arranged in the box body 1, and the battery cell can be protected from being impacted directly.
The box assembly further comprises an insulating layer 2, wherein the insulating layer 2 is attached to the outer side of the box 1 and is mainly attached to the outer peripheral surface of the box 1. The power battery provides electric energy through the battery cell, and the battery cell generates electric energy through chemical reaction of the positive pole piece, the negative pole piece and filling liquid filled in the battery cell. Under the condition of lower temperature, the speed of chemical reaction is greatly reduced, and the performance of the power battery is greatly influenced. The heat insulation layer 2 can reduce the heat exchange speed between the box body 1 and the external environment, and is helpful for keeping the temperature in the box body 1, so that the performance of the power battery is improved.
The heat preservation 2 covers the outer peripheral surface of at least a part of the box body 1, and the shape of the inner side surface of the heat preservation 2 is matched with the shape of the outer peripheral surface of the covered box body 1, so that the heat preservation 2 can be more tightly attached to the outer peripheral surface of the box body 1, the attached tightness degree of the heat preservation 2 and the box body 1 is improved, and the heat preservation effect is improved. The outer peripheral surface of the case 1 not covered with the heat insulating layer 2 is generally a position where a fixing point is provided. In addition, the complex shape of the outer contour of the case 1 is difficult to assemble due to the complex shape, and in some cases, the case is difficult to be covered by the heat insulation layer 2.
The manufacturing material of the heat preservation layer 2 is preferably a material with low heat conductivity coefficient and low density, the heat preservation effect of the heat preservation layer 2 can be improved due to the low heat conductivity coefficient, and the quality of the heat preservation layer 2 can be effectively reduced due to the low density, so that the weight of the power battery is reduced. Common materials for making the heat insulation layer 2 are silicon foam and MPPE (Modified Polypheylene ether) foam, and the heat conductivity coefficients and densities of the two materials are shown in table 1.
The heat-insulating layer 2 can be made of a material with low density and low heat conductivity, specifically, the heat conductivity of the material for making the heat-insulating layer 2 is 0.01W.m -1 ·K -1 ～0.5W·m -1 ·K -1 Density of 0.05g cm -3 ～1.5g·cm -3 . The material for manufacturing the heat insulating layer 2 is preferably a foaming material, and the density of the foaming material is low. Taking silicon foam and MPPE foam as examples, the parameters are shown in table 1, and compared with the silicon foam, the MPPE foam has lower heat conductivity coefficient and lower density, has better heat preservation effect and light weight effect, and is the optimal choice for manufacturing the heat preservation layer 2.
TABLE 1
The heat preservation 2 includes a plurality of heat preservation pieces 21, and every heat preservation piece 21 all laminates in the outer peripheral face of box 1, and the parcel is in the outer peripheral face of box 1 after all heat preservation pieces 21 splice each other. The heat insulation layer 2 is arranged into the plurality of heat insulation blocks 21 to be spliced, so that the installation difficulty of the heat insulation layer 2 can be reduced. The manner of installing the insulating layer 2 as the plurality of insulating blocks 21 is particularly suitable for the case 1 having a complicated outline shape of the outer peripheral surface.
The heat-insulating block 21 is integrally formed by a mold. For foam materials, it is necessary to foam the foam materials first, and then to inject the foamed materials into a mold to mold the heat insulating block 21. By adopting the mode, the heat preservation block 21 with more complex outline shape can be formed, so that the heat preservation block 21 can be matched with the outline of the box body 1 with more complex shape, the attached tightness degree of the heat preservation block 21 and the box body 1 is improved, and the aim of improving the heat preservation effect is fulfilled. Moreover, by adopting the mode to form the heat-insulating block 21, the heat-insulating material with a planar structure is not required to be cut and spliced, and the heat-insulating block can be attached to some special bulges, corners or reinforcing ribs on the outer surface of the box body 1, so that the heat-insulating block is simple to manufacture, high in attaching compactness and good in heat-insulating effect. In addition, the heat preservation blocks 21 can be manufactured in batches, so that the manufacturing cost and the manufacturing time of the heat preservation blocks 21 are reduced.
Before the thermal insulation block 21 is attached to the outer peripheral surface of the box body 1, the surface of the thermal insulation block 21 matched with the box body 1 is coated with back glue, so that the inner surface of the thermal insulation block 21 is adhered to the outer surface of the box body 1, the stability of connection between the thermal insulation block 21 and the box body 1 is improved, and the possibility of falling off of the thermal insulation block 21 is reduced.
In addition, a fixing member 3 is provided to fix the thermal insulation block 21 and the case 1, and the fixing member 3 is a pin or a screw. The box 1 is provided with a mounting hole, and the fixing piece 3 is inserted into the heat insulation block 21 after passing through the mounting hole. The installation direction of the fixing piece 3 is generally perpendicular to the installation direction of the heat preservation block 21, so that stability of the box body 1 and the heat preservation block 21 after being connected by the fixing piece 3 is guaranteed. With the increase of the service time of the power battery, even if the back glue between the heat insulation block 21 and the box body 1 is aged and falls off, the heat insulation block 21 can be fixed on the outer peripheral surface of the box body 1 through the fixing piece 3, so that the possibility that the heat insulation block 21 is separated from the box body 1 is further reduced.
In the present embodiment, the outer periphery of the case 1 is outwardly convex with the wing plates 11, specifically, the wing plates 11 are protruded in the outer periphery direction of the case 1, and the wing plates 11 are located above and below the heat insulation block 21, so that the heat insulation block 21 is sandwiched between the wing plates 11. The heat preservation block 21 is limited by the wing plate 11, and the stability of connection of the heat preservation block 21 and the box body 1 can be improved. The wing plates 11 comprise two groups of types, one type of wing plate 11 is a structural member of the box body 1, such as a structural member connected with rib plates or ribs, and is used for clamping a heat preservation block 21 with a complex matching surface, and the heat preservation block 21 of the type is generally smaller in volume; the other type of wing plate 11 is arranged at the upper edge and the lower edge of the periphery of the box body 1, and is mainly used for clamping a heat insulation block 21 with a simpler matching surface, and the heat insulation block 21 of the type is large in size.
The fixing piece 3 passes through the wing plate 11 and then is connected with the heat preservation block 21, so that the heat preservation block 21 is fixed with the box body 1. And the fixing piece 3 can not directly contact with the outer peripheral surface of the box body 1 wrapped by the heat insulation block 21, and the heat emitted outwards by the box body 1 through the fixing piece 3 is less, so that the heat insulation effect of the heat insulation block 21 is improved.
All the insulating blocks 21 can be fixed to the two types of wing plates 11 by using the fixing members 3. Of course, in other embodiments, a portion of the thermal insulation blocks 21 are fixed to the wing plates 11 by the fixing members 31, and the remaining thermal insulation blocks 21 are directly connected to the case 1 by the fixing members 3 or are adhered to the case 1. Wherein, the mode that the heat preservation piece 21 adopts mounting 3 and box 1 lug connection is: the fixing piece 3 passes through the heat insulation block 21 and then is connected with the box body 1 to fix the heat insulation block 21 and the box body 1. The mounting 3 is connected with the box 1 after passing through the heat preservation piece 21 in order to fix the in-process of heat preservation piece 21 and box 1, along with the increase of the depth of connection between mounting 3 and box 1, the mounting 3 can draw in the interval between heat preservation piece 21 and the box 1 to make heat preservation piece 21 and box 1 laminating ground inseparabler.
It should be noted that, although the heat insulation layer 2 is formed by splicing the plurality of heat insulation blocks 21 in the embodiment, this is not a limitation of the present utility model, and in other embodiments, a person skilled in the art may set the heat insulation layer 2 as a monolithic structure without departing from the principles of the present utility model, specifically, the heat insulation layer 2 is integrally formed, the inner side surface of the heat insulation layer 2 is adapted to at least a part of the outer peripheral surface of the case 1, and the inner side surface of the heat insulation layer 2 at least includes two non-parallel surfaces, that is, the inner side surface of the heat insulation layer 2 is not a planar structure, and can be adapted to the outer peripheral surface of the case 1 with a relatively complex shape, so as to improve the heat insulation effect of the heat insulation layer 2. Illustratively, the insulation material may be sprayed onto the outer circumferential surface of the case 1 in a spray manner to form the insulation layer 2 such that the insulation layer 2 forms a unitary structure.
The installation process of the heat preservation layer 2 of the power battery box body provided by the utility model is as follows: the heat preservation piece 21 adopts mould integrated into one piece, can obtain the higher and more complicated outline shape of precision to promote the adaptation degree of heat preservation piece 21 profile and box 1 outline, thereby promote the compactness of heat preservation piece 21 and the laminating of box 1, realize promoting the purpose of heat preservation effect. Before the heat preservation block 21 is attached, back glue is coated on the surface of the heat preservation block 21 matched with the box body 1, then the heat preservation block 21 is attached to the peripheral surface of the box body 1 matched with the outline shape of the heat preservation block 21, the heat preservation block 21 is adhered to the outer surface of the box body 1, and the heat preservation layer 2 is formed by splicing a plurality of heat preservation blocks 21. And then the fixing piece 3 is arranged at the wing plate 11 to fix the heat preservation block 21 and the wing plate 11 so as to further improve the stability of the coordination of the heat preservation block 21 and the box body 1.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a heat preservation piece of power battery box, heat preservation piece (21) laminating is in the outside of box (1), its characterized in that, heat preservation piece (21) integrated into one piece, the medial surface shape of heat preservation piece (21) with at least a part outer peripheral face looks adaptation of box (1), the shape contains two non-parallel faces at least.
2. The thermal insulation block of a power battery box according to claim 1, characterized in that the thermal conductivity of the thermal insulation block (21) is 0.01W-m -1 ·K -1 ～0.5W·m -1 ·K -1 The method comprises the steps of carrying out a first treatment on the surface of the And/or
The density of the heat insulation block (21) is 0.05g cm -3 ～1.5g·cm -3 。
3. The heat preservation block of the power battery box according to claim 2, characterized in that the heat preservation block (21) is made of MPPE foam.
4. A thermal block for a power cell housing according to claim 1, characterized in that the inner surface of the thermal block (21) is bonded to the outer surface of the housing (1).
5. The thermal insulation block of a power battery box according to claim 1, characterized in that the thermal insulation block (21) is connected with the box (1) by a fixing piece (3).
6. The thermal insulation block of a power battery box according to claim 5, characterized in that the fixing member (3) is a pin or a screw.
7. The heat preservation block of a power battery box according to claim 5, characterized in that a wing plate (11) is convexly arranged on the periphery of the box (1), the heat preservation block (21) is installed between the two wing plates (11), and the fixing piece (3) penetrates through the wing plates (11) and the heat preservation block (21).
8. An insulating layer of a power battery box body, characterized in that the insulating layer (2) is formed by splicing a plurality of insulating blocks (21) according to any one of claims 1-7, and the plurality of insulating blocks (21) are wrapped at different positions of the outer peripheral surface of the box body (1).
9. A power cell housing assembly comprising:
a case (1) having an accommodation space formed therein;
the heat preservation layer (2) as claimed in claim 8, wherein the heat preservation layer (2) is coated on the outer side of the box body (1).
10. A power cell, comprising:
the tank assembly of claim 9;
and the battery cell is arranged in the accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320417244.4U CN220138450U (en) | 2023-03-02 | 2023-03-02 | Heat preservation block, heat preservation layer, box assembly and power battery of power battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320417244.4U CN220138450U (en) | 2023-03-02 | 2023-03-02 | Heat preservation block, heat preservation layer, box assembly and power battery of power battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138450U true CN220138450U (en) | 2023-12-05 |
Family
ID=88955052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320417244.4U Active CN220138450U (en) | 2023-03-02 | 2023-03-02 | Heat preservation block, heat preservation layer, box assembly and power battery of power battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220138450U (en) |
-
2023
- 2023-03-02 CN CN202320417244.4U patent/CN220138450U/en active Active
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