CN218632383U - Battery core, battery module, battery pack and electric vehicle - Google Patents
Battery core, battery module, battery pack and electric vehicle Download PDFInfo
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- CN218632383U CN218632383U CN202222641358.5U CN202222641358U CN218632383U CN 218632383 U CN218632383 U CN 218632383U CN 202222641358 U CN202222641358 U CN 202222641358U CN 218632383 U CN218632383 U CN 218632383U
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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 application discloses electric core, battery module, battery package and electric vehicle. The battery cell comprises a shell and a pole, wherein the shell is provided with a cover plate, the cover plate comprises a plurality of first connecting areas and a plurality of second connecting areas, and the second connecting areas are arranged in a protruding mode in the first connecting areas; the first connecting areas and the second connecting areas are alternately arranged, and the second connecting areas are uniformly distributed on two sides of any one first connecting area; the pole is arranged at the first connecting area; any pole does not protrude out of the second connection area.
Description
Technical Field
The application relates to the technical field of energy storage equipment, and more particularly relates to a battery cell, a battery module, a battery pack and an electric vehicle.
Background
With the increasing promotion of new energy automobiles in China, the pure electric automobile with the characteristics of green and environmental protection becomes the inevitable trend of the development of the automobile industry in the future, and the pure electric automobile gradually replaces the traditional fuel passenger car to become a common daily travel vehicle. The power source of the electric vehicle is a battery pack, and as an important component part of the electric vehicle, the improvement of various performances of the battery pack has been a major concern in the industry.
In the prior art, the pole of the battery cell in the battery pack is easily damaged when the battery pack is impacted by external force, so that the safety of the battery pack is affected.
In view of the above, a new technical solution is needed to solve at least one of the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the present application is to provide a new technical solution of a battery pack and an electric vehicle.
According to a first aspect of the present application, there is provided a battery cell, comprising:
a housing having a cover plate, the cover plate including a plurality of first connection regions and a plurality of second connection regions disposed to protrude from the first connection regions;
the first connecting areas and the second connecting areas are alternately arranged, and the second connecting areas are uniformly arranged on two sides of any one first connecting area;
a pole disposed at the first connection region; any pole does not protrude out of the second connection area.
Optionally, the second connection region is provided protruding with respect to the post.
Optionally, the first connection regions and the second connection regions are alternately arranged along the length direction of the battery cell.
According to a second aspect of the present application, a battery module is provided, where the battery module includes a plurality of battery cells as described in the first aspect, and the battery cells are arranged and connected in a thickness direction; the battery module further comprises connecting pieces, and the adjacent two poles of the battery cell are connected through the connecting pieces.
Optionally, the second connection region is arranged in a raised manner with respect to the connecting lug.
According to a third aspect of the present application, there is provided a battery pack including the battery module according to the second aspect.
Optionally, the battery pack further comprises a liquid cooling plate, and the second connecting area of each battery cell is attached to the liquid cooling plate.
Optionally, a gap is provided between the connecting piece and the liquid cooling plate.
Optionally, the battery pack further comprises a heat-conducting structural adhesive layer, and the second connection region is connected with the liquid cooling plate through the heat-conducting structural adhesive layer; the thickness of the heat-conducting structural adhesive layer is 0.5-3.0 mm.
According to a fourth aspect of the present application, there is provided an electric vehicle including the battery pack according to the third aspect.
The technical scheme adopted by the application can achieve the following beneficial effects:
in the electric core that this application embodiment provided, the second joining region of utmost point post both sides can form the guard action to utmost point post, and when this electric core received external shock, utmost point post suffered the possibility greatly reduced who damages to the security performance of electric core has been improved.
Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a cell according to an embodiment of the present application;
fig. 2 is a schematic structural view of a battery module according to an embodiment of the present application;
fig. 3 is an exploded view of a battery pack according to an embodiment of the present application;
fig. 4 is a side view of a battery pack according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a side view structure of a battery pack according to an embodiment of the present application;
fig. 6 is an enlarged schematic view at a in fig. 5.
Description of reference numerals:
1. an electric core; 11. a housing; 110. a cover plate; 1100. a first connection region; 1101. a second attachment zone; 12. a pole column; 2. connecting sheets; 3. a liquid-cooled plate; 4. a thermally conductive structural adhesive layer.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 to 5, according to an embodiment of the present application, there is provided a battery cell including: a housing 11 and a pole 12, wherein the housing 11 has a cover plate 110, the cover plate 110 includes a plurality of first connection regions 1100 and a plurality of second connection regions 1101, and the second connection regions 1101 are disposed to protrude from the first connection regions 1100; the first connection regions 1100 and the second connection regions 1101 are alternately arranged, and the second connection regions 1101 are arranged on both sides of any one of the first connection regions 1100; the pole 12 is disposed at the first connection region 1100; none of the terminals 12 protrudes from the second connection region 1101.
In the battery cell provided in the embodiment of the present application, the cover plate 110 of the casing 11 is not a regular flat planar structure, but has two regions with different heights, that is, a first connection region 1100 with a lower height and a second connection region 1101 with a higher height, that is, the second connection region 1101 is disposed to protrude from the first connection region 1100. Also, the first connection region 1100 and the second connection region 1101 are alternately arranged; that is, adjacently disposed beside first connection region 1100 is second connection region 1101, and adjacently disposed beside second connection region 1101 is first connection region 1100. The entire cover plate 110 has a shape structure in which convexes and concaves are alternated. In the electric core provided in the embodiment of the present application, the terminal 12 is disposed in the first connection region 1100 with a lower height, because the first connection region 1100 is recessed relative to the second connection region 1101, and because the first connection region 1100 and the second connection region 1101 are alternately disposed, and the second connection region 1101 is uniformly disposed on two sides of any first connection region 1100; thus, each of the poles 12 is sandwiched between the two second connection regions 1101; moreover, neither of the pole posts 12 protrudes from the second connection region 1101, i.e., either of the pole posts 12 is disposed flush with the second connection region 1101 or is disposed lower than the second connection region 1101. Therefore, the second connection regions 1101 on both sides of the terminal post 12 can protect the terminal post 12, and when the battery cell is impacted by external force, the possibility that the terminal post 12 is damaged is greatly reduced, thereby improving the safety performance of the battery cell.
Referring to fig. 1, in one embodiment, the second connection region 1101 is convexly disposed with respect to the pole post 12.
In some prior art's electric core, utmost point post 12 protrusion in the apron setting of casing is in highest position department, and when electric core received external shock like this, the utmost point post 12 that is located the highest position will be suffered external shock and destroy when it dashes.
In another part of the prior art battery cell, the terminal post 12 is disposed at a corner position of the casing cover plate, so that when the battery cell is impacted by external force, the terminal post 12 is also easily damaged.
In the present embodiment, the second connection region 1101 is not only disposed to protrude from the first connection region 1100, but also the second connection region 1101 is disposed to protrude from the post 12; the second connection region 1101 can thus provide a more comprehensive protection for the pole 12; when the battery cell is impacted by external force, the second connection areas 1101 which are arranged on two sides of the pole 12 and protrude out of the pole 12 can help the pole 12 to resist the impact of the external force, so that the pole 12 is powerfully protected, and the safety performance of the battery cell is improved.
Referring to fig. 1, in one embodiment, the first connection regions 1100 and the second connection regions 1101 are alternately arranged along the length direction of the battery cell.
Referring to fig. 1, a direction a in fig. 1 is a length direction of a battery cell, a direction b is a height direction of the battery cell, and a direction c is a thickness direction of the battery cell; generally, the cell has the largest dimension in the longitudinal direction thereof, and therefore, in this specific example, the first connection region 1100 and the second connection region 1101 are alternately arranged in the longitudinal direction of the cell. In the length direction of the battery cell, the outermost two sides are the second connection areas 1101, and each first connection area 1100 provided with the terminal 12 is clamped between the two second connection areas 1101, so that a powerful protection effect is provided for the terminal 12.
Referring to fig. 2, according to another embodiment of the present application, a battery module is provided, where the battery module includes a plurality of battery cells 1 as described above, and the battery cells 1 are arranged and connected in a thickness direction; the battery module further comprises a connecting sheet 2, and the two adjacent poles 12 of the battery cell 1 are connected through the connecting sheet 2.
The battery module in this application embodiment includes a plurality of electric cores 1 of arranging the connection along thickness direction, and wherein, the utmost point post 12 of two adjacent electric cores 1 connects through connection piece 2. The battery module of this application embodiment is owing to including above-mentioned electric core 1, every utmost point post 12 all presss from both sides and establishes between two second joining region 1101, therefore utmost point post 12 can obtain effectual protection, and when this battery module received external force striking, the second joining region 1101 that sets up in utmost point post 12 both sides can help utmost point post 12 to keep out external force and strike to carry out strong protection to utmost point post 12, improved the security performance of this battery module.
Referring to fig. 2, in one embodiment, the second connection region 1101 is arranged to protrude with respect to the tab 2.
In this specific example, the second connection region 1101 is provided so as to project not only from the terminal post 12 but also from the connection tab 2; the second connection area 1101 can thus provide protection for the tab 2, and when the battery module is impacted by an external force, the second connection area 1101 can protect the tab 2, so that the tab 2 is prevented from loosening, and the stability of the terminal 12 is further ensured.
Referring to fig. 3 to 5, according to still another embodiment of the present application, there is provided a battery pack including the battery module as described above.
The battery package of this application embodiment is owing to including above-mentioned battery module, therefore this battery package has higher security performance, and when this battery package received external impact, the second joining region 1101 that sets up in utmost point post 12 both sides can help utmost point post 12 to keep out external force and strike to carry out strong protection to utmost point post 12.
Referring to fig. 3 to 5, in an embodiment, the battery pack further includes a liquid cooling plate 3, and the second connection region 1101 of each battery cell 1 is attached to the liquid cooling plate 3.
The battery cell 1 included in the embodiment of the present application is particularly suitable for the case where the battery cell is installed in a battery pack in an inverted manner. The inverted installation means that: the cover plate 110 provided with the terminal 12 in the battery cell 1 is directed downward and connected to the liquid cooling plate 3. The battery pack of the embodiment of the application comprises the battery cell 1, the cover plate 110 of the battery cell 1 presents a convex-concave alternating special-shaped structure, the poles 12 are arranged in the first connection area 1100 with a lower height, and any pole 12 does not protrude out of the second connection area 1101; when electric core 1 is connected with liquid cooling plate 3 like this, second joining region 1101 can be used for being connected with the laminating of liquid cooling plate 3, and the second joining region 1101 of every electric core 1 provides the supporting role for electric core 1, just so need not set up special supporting structure and supports electric core to save the setting of spare part, simplified the structure of battery package, improved the assembly efficiency of battery package production and saved manufacturing cost. Moreover, the cover plate 110 is directly contacted with the liquid cooling plate 3, and the liquid cooling plate 3 can provide a good temperature regulation effect for the battery pack.
Referring to fig. 4-5, in one embodiment, the connecting piece 2 and the liquid cooling plate 3 have a gap therebetween.
In this specific example, after the liquid cooling plate 3 is connected to the second connection region 1101 of the cover plate 110, a gap is formed between the connection piece 2 located at the first connection region 1100 and the liquid cooling plate 3; the presence of this gap facilitates heat dissipation from the post 12. When electric core was carrying out charge-discharge, the temperature of utmost point post was the highest, and this application embodiment can utilize straight liquid cooling plate 3 to carry out effective heat dissipation to the apron of electric core and utmost point post, and need not to carry out special design to liquid cooling plate 3.
Moreover, because a gap is formed between the connecting sheet 2 and the liquid cooling plate 3, when the battery pack is impacted by external force at the bottom liquid cooling plate 3, the gap can play a role in buffering; therefore, the pole 12 of the battery cell 1 can be better prevented from being impacted when the bottom of the battery pack is impacted, and the protection effect on the pole 12 is further improved. Optionally, considering the safety distance of the protection pole 12 and the installation space of the protection pole 12, a gap between the connecting sheet 2 and the liquid cooling plate 3 is 8-10 mm.
Referring to fig. 3, in one embodiment, the battery pack further includes a thermal conductive structural adhesive layer 4, and the second connection region 1101 is connected to the liquid cooling plate 3 through the thermal conductive structural adhesive layer 4; the thickness of the heat-conducting structural adhesive layer 4 is 0.5-3.0 mm.
In general, the smaller the thickness of the heat conductive structure adhesive layer 4, the better, but in order to ensure the adhesion effect, the heat conductive structure adhesive layer 4 needs to satisfy a certain thickness value, and therefore, in this specific example, the thickness of the heat conductive structure adhesive layer 4 is set to 0.5 to 3.0mm, which can ensure the adhesion effect without affecting the overall structure of the battery pack.
Referring to fig. 6, the dimensions of the parameters related to the battery cell 1 are as follows:
D 0 the distance between the upper surface of the pole 12 and the liquid cooling plate 3; d 1 The distance between the upper surface of the connecting sheet 2 and the liquid cooling plate 3 is set; d 2 The distance from the upper surface of the pole 12 to the upper surface of the cover plate 110; l is the section width of the connecting sheet 2; t is the section thickness of the connecting sheet 2; t is the thickness of the heat-conducting structural adhesive layer 4; then the following relationship exists:
T＝D 0 -D 1 ；
s = L × T; s is the cross-sectional flow area of the connecting sheet 2;
when the connecting piece 2 is an aluminum sheet: s = I/3; i is the maximum peak current of the battery pack;
when the connecting piece 2 is a copper sheet: s = I/5; i is the maximum peak current of the battery pack;
thus:
when the connecting sheet is an aluminum sheet, D 2 ＝(3D 1 L+I-3tL)/3L
When the connecting piece is a copper sheet, D 2 ＝(5D 1 L+I-5tL)/5L
And D is more than or equal to 8mm 1 ≤10mm；0.5mm≤t≤3.0mm。
According to still another embodiment of the present application, there is provided an electric vehicle including the battery pack as described above.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (10)
1. A battery cell, comprising:
a housing (11), the housing (11) having a cover plate (110), the cover plate (110) comprising a plurality of first connection areas (1100) and a plurality of second connection areas (1101), the second connection areas (1101) being arranged protruding from the first connection areas (1100);
the first connecting areas (1100) and the second connecting areas (1101) are alternately arranged, and the second connecting areas (1101) are uniformly arranged on two sides of any one first connecting area (1100);
a pole (12), said pole (12) being arranged at said first connection region (1100); any one of the poles (12) does not protrude from the second connection region (1101).
2. The electrical core of claim 1, wherein the second connection region (1101) is arranged in a protruding manner with respect to the pole (12).
3. The cell of claim 1, wherein the first connection regions (1100) alternate with the second connection regions (1101) along a length of the cell.
4. A battery module, characterized in that the battery module comprises a plurality of battery cells (1) according to any one of claims 1 to 3, wherein the plurality of battery cells (1) are arranged and connected in the thickness direction; the battery module further comprises connecting pieces (2), and the adjacent two poles (12) of the battery core (1) are connected through the connecting pieces (2).
5. The battery module according to claim 4, wherein the second connection region (1101) is provided so as to protrude with respect to the tab (2).
6. A battery pack, characterized in that the battery pack comprises the battery module according to claim 4 or 5.
7. The battery pack according to claim 6, further comprising a liquid-cooled plate (3), wherein the second connection region (1101) of each of the cells (1) is in snug connection with the liquid-cooled plate (3).
8. Battery pack according to claim 7, characterized in that there is a gap between the connecting tab (2) and the liquid-cooled plate (3).
9. The battery pack according to claim 7, further comprising a thermal conductive structural adhesive layer (4), wherein the second connection region (1101) is connected to the liquid cooling plate (3) through the thermal conductive structural adhesive layer (4); the thickness of the heat-conducting structural adhesive layer (4) is 0.5-3.0 mm.
10. An electric vehicle, characterized in that the electric vehicle comprises a battery pack according to any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222641358.5U CN218632383U (en) | 2022-09-30 | 2022-09-30 | Battery core, battery module, battery pack and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222641358.5U CN218632383U (en) | 2022-09-30 | 2022-09-30 | Battery core, battery module, battery pack and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218632383U true CN218632383U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222641358.5U Active CN218632383U (en) | 2022-09-30 | 2022-09-30 | Battery core, battery module, battery pack and electric vehicle |
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| CN (1) | CN218632383U (en) |
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- 2022-09-30 CN CN202222641358.5U patent/CN218632383U/en active Active
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