CN217009456U - Battery pack and energy unit with same - Google Patents
Battery pack and energy unit with same Download PDFInfo
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- CN217009456U CN217009456U CN202220416783.1U CN202220416783U CN217009456U CN 217009456 U CN217009456 U CN 217009456U CN 202220416783 U CN202220416783 U CN 202220416783U CN 217009456 U CN217009456 U CN 217009456U
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- battery pack
- battery
- cooling plate
- opening
- water cooling
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Abstract
The utility model discloses a battery pack and an energy unit with the same, wherein the battery pack comprises: an electric core; the water cooling plate covers the surface of the electric core and is suitable for exchanging heat with the electric core; the membrane structure is arranged between the water cooling plate and the electric core and is suitable for heating the electric core and the water cooling plate, and the membrane structure is provided with an opening penetrating in the thickness direction; and at least part of the bonding glue layer is arranged at the opening, and the bonding glue layer at the opening is used for bonding and fixing the battery cell and the water cooling plate. According to the battery pack, the opening is formed in the film structure, the surface of the battery core exposed through the opening can be fixed with the water cooling plate through the adhesive layer, the battery core, the film structure and the water cooling plate can be connected more firmly through the design, and when the battery pack is subjected to external force, the film structure and the water cooling plate are not easy to separate from the battery core, so that the safety of the battery pack is improved.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a battery pack and an energy unit with the same.
Background
The revolutionary change is taking place for the automobile industry of contemporary, traditional fuel automobile is being gradually replaced by new energy automobile promptly, wherein pure electric automobile is being played as one kind of new energy automobile, many transmission fuel car platforms are direct through changing engine structure into power battery package structure, change the automobile power source into the battery by the fuel, the continuous mileage of electric motor car is seriously influenced to the heating heat preservation function of battery package, membrane structure and water-cooling board all are located the bottom of electric core among the correlation technique, membrane structure upper portion area is glued and is pasted with electric core/module bottom, when the battery package receives external force, membrane structure and water-cooling board break away from with electric core easily, and the security performance is low. The present application is directed to a battery pack to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a battery pack, in which at least a portion of a surface of a battery cell of the battery pack can be directly connected to a water-cooling plate through an opening of a membrane structure, and when an external force is applied, the membrane structure and the water-cooling plate are not easily separated, so that the safety of the battery pack is higher.
The utility model also provides an energy unit with the battery pack.
The battery pack according to the present invention includes: an electric core; the water cooling plate covers the surface of the electric core and is suitable for exchanging heat with the electric core; the membrane structure is arranged between the water cooling plate and the electric core and is suitable for heating the electric core and the water cooling plate, and the membrane structure is provided with an opening penetrating in the thickness direction; and at least part of the bonding glue layer is arranged at the opening, and the bonding glue layer at the opening is used for bonding and fixing the battery cell and the water cooling plate.
According to the battery pack, the opening is formed in the film structure, part of the surface of the battery core is exposed at the opening, and the exposed surface of the battery core can be fixed with the water cooling plate through the adhesive layer due to the adhesive layer arranged at the opening.
According to some embodiments of the utility model, the membrane structure is provided at a side wall and/or a top wall and/or a bottom wall of the cell.
According to some embodiments of the utility model, the battery pack further comprises: the casing, be formed with in the casing and open and be suitable for and hold towards the top the chamber that holds of electricity core, the water-cooling board set up in electricity core top and with casing cooperation and seal hold the chamber in order to protect electricity core.
According to some embodiments of the utility model, the battery cell is configured as a plurality of battery cells arranged in sequence in a first direction, the opening extends in the first direction and/or a second direction, each opening is arranged opposite to a plurality of battery cells, and the first direction is orthogonal to the second direction.
According to some embodiments of the utility model, the opening is configured to be a plurality of openings, the plurality of openings are arranged at intervals in the first direction, the extending directions of two adjacent openings are arranged in parallel, and the starting ends and/or the end ends of the two openings are arranged in a staggered manner.
According to some embodiments of the utility model, one end of the opening is arranged at an edge of the membrane structure and is arranged open.
According to some embodiments of the utility model, the thickness of the bond line is n and satisfies: n is more than or equal to 0.5mm and less than or equal to 1 mm.
According to some embodiments of the utility model, the battery pack further comprises: and the limiting strip is arranged between the membrane structure and the water cooling plate, and the thickness of the bonding glue layer is not more than that of the limiting strip.
According to some embodiments of the utility model, the spacing strip is configured to be plural and the extending direction of the spacing strip is the same as the stacking direction of the battery cells.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a battery pack according to an embodiment of the present invention;
fig. 3 is a partial structural view of a battery pack according to an embodiment of the present invention;
FIG. 4 is a schematic representation of a membrane structure according to one embodiment of the present invention.
Reference numerals:
100: a battery pack; 110: a housing; 120: an electric core; 130: a membrane structure; 131: an opening; 140: a bonding glue layer; 150: a water-cooling plate; 160: and (5) a limiting strip.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically, electrically or otherwise in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
In the correlation technique, the one side of the membrane structure in the battery package is equipped with the double faced adhesive tape, and the membrane structure passes through the double faced adhesive tape with electric core and bonds fixedly, and the another side of membrane structure is equipped with the bonding glue film, and the membrane structure bonds fixedly through bonding glue film and water-cooling board, because the adhesion strength of double faced adhesive tape is too late to bond the glue film, when the battery package received external force, membrane structure and water-cooling board separated from electric core easily, and the security is lower. The present application is directed to a battery pack to solve the above problems.
A battery pack according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1, a battery pack 100 provided by the present invention includes a battery cell 120, a film structure 130, a bonding adhesive layer 140, and a water-cooling plate 150, which are sequentially disposed, the water-cooling plate 150 covers a surface of the battery cell 120 and is adapted to exchange heat with the battery cell 120, the film structure 130 is disposed between the water-cooling plate 150 and the battery cell 120 and is adapted to heat the battery cell 120 and the water-cooling plate 150, the film structure 130 has an opening 131 penetrating in a thickness direction, at least a portion of the bonding adhesive layer 140 is disposed at the opening 131, and the bonding adhesive layer 140 located at the opening 131 bonds and fixes the battery cell 120 and the water-cooling plate 150.
According to the battery pack 100, the opening 131 is formed in the film structure 130, part of the surface of the battery cell 120 is exposed at the opening 131, and the bonding adhesive layer 140 is formed at the opening 131, so that the exposed surface of the battery cell 120 can be fixed with the water cooling plate 150 through the bonding adhesive layer 140, and compared with a setting mode that the battery cell 120 in the battery pack 100 is connected with the film structure 130 through a double-sided adhesive, the design can enable the battery cell 120 to be connected with the water cooling plate 150 through the bonding adhesive layer 140, and because the bonding force of the bonding adhesive layer 140 is stronger, when the battery pack 100 is subjected to an external force, the film structure 130 and the water cooling plate 150 are not easily separated from the battery cell 120, so that the safety of the battery pack 100 is improved. In addition, after the battery cell 120, the membrane structure 130 and the water cooling plate 150 are fixed by the adhesive layer 140, the deformation of the water cooling plate 150 caused in the working process of the battery pack 100 can be avoided, and the rigidity of the water cooling plate 150 is improved. It should be noted that the adhesive layer 140 may be a heat conductive structural adhesive.
According to some embodiments of the present invention, the position of the film structure 130 is not particularly limited, and may be disposed on the side wall and/or the top wall and/or the bottom wall of the battery cell 120. Specifically, the film structure 130 may be disposed on a side wall of the battery cell 120, a top wall of the battery cell 120, and a bottom wall of the battery cell 120; alternatively, in order to improve the heating effect, the film structures 130 may be disposed on a plurality of surfaces of the battery cell 120, for example, the film structures 130 may be disposed on the side walls and the top wall of the battery cell 120, the film structures 130 may be disposed on the side walls and the bottom wall of the battery cell 120, or the film structures 130 may be disposed on the top wall and the bottom wall of the battery cell 120; still alternatively, the film structures 130 may be disposed on the side walls, the top wall, and the bottom wall of the battery cell 120. Therefore, since the film structure 130 is provided with the opening 131, the surface of the battery cell 120 having the film structure 131 can be fixedly connected with other structures through the opening 131, and the safety of the battery pack 100 is further improved.
It should be noted that the membrane structure 130 may be disposed on the side wall and/or the top wall and/or the bottom wall of the battery cell 120, and the water cooling plate 150 may also be disposed on the side wall and/or the top wall and/or the bottom wall of the battery cell 120, which may be selected by a person skilled in the art according to the actual situation.
According to some embodiments of the present invention, referring to fig. 1 and 2, the battery pack 100 further includes a casing 110, a receiving cavity which is open to the top and is adapted to receive the battery cell 120 is formed in the casing 110, and a water cooling plate 150 is disposed on the top of the battery cell 120 and is matched with the casing 110 and closes the receiving cavity to protect the battery cell 120. Specifically, the battery cell 120 is disposed in a containing cavity formed by the casing 110, the bottom of the battery cell 120 is fixedly connected to the lower casing of the casing 110, and the top of the battery cell 120 is provided with the water cooling plate 150 as an upper casing of the casing 110. Therefore, the battery pack 100 does not need to be provided with an upper shell independently, which is equivalent to the extra space occupied by the raw water cooling plate 150 in the battery pack 100, and the space is increased to arrange more cells 120, thereby improving the electric quantity of the battery pack 100.
According to some embodiments of the present invention, regardless of how the cells 120 are arranged in the battery pack 100, the openings 131 in the film structure 130 may be designed according to the arrangement of the cells 120 to expose a portion of the surface of the cells 120, so the arrangement direction of the cells 120 in the battery pack 100 is not particularly limited, for example, the cells 120 may be configured as a plurality of cells arranged in sequence in a first direction, the openings 131 extend in the first direction and/or a second direction, each opening 131 is arranged opposite to a plurality of cells 120, and the first direction is orthogonal to the second direction. Specifically, when the plurality of battery cells 120 are arranged in the first direction, the openings 131 of the film structure 130 may extend in the first direction, for example, the openings 131 are long strips extending in the first direction, and at this time, the openings 131 may simultaneously expose the surfaces of the plurality of battery cells 120; when the plurality of battery cells 120 are arranged in the first direction, the openings 131 of the film structure 130 may extend in a second direction, the first direction being orthogonal to the second direction, for example, the openings 131 may be elongated extending in the second direction, and in this case, the openings 131 may also expose the surfaces of the plurality of battery cells 120. It should be noted that the term "directly opposite" as used herein means: the cells 120 in the battery pack 100 are sequentially arranged, the film structure 130 is disposed parallel to a surface of the cells 120, and the openings 131 of the film structure 130 may simultaneously expose at least a portion of the surfaces of the cells 120.
It should be noted that, a person skilled in the art may select the shape of the opening 131 according to the difficulty of the process and the design of the battery pack, for example, the opening may be rectangular, square, circular, oval, etc., as long as it can achieve the purpose of adhering and fixing a part of the surface of the battery cell 120 and the water cooling plate 150.
According to some embodiments of the present invention, referring to fig. 3 and 4, the number, size and shape of the openings 131 on the film structure 130 are not particularly limited, and a plurality of openings 131 may be provided on the film structure 130 on the basis of not affecting the function of the film, the plurality of openings 131 are arranged at intervals in the first direction, the extending directions of two adjacent openings 131 are arranged in parallel, and the starting ends and/or the ending ends of the two openings 131 are arranged alternately. In other words, in order to increase the area of the battery cells 120 exposed through the openings 131, a plurality of openings 131 may be provided on the film structure 130 without affecting the film function, for example, when the film structure 130 is a heating film, a plurality of openings 131 may be provided on the heating film, in order to avoid cutting off the heating wire in the heating film, the openings 131 may be configured to extend in the second direction, the lengths of the openings 131 may be the same or different, and the starting positions of the openings 131 on the film structure 130 are different, so that the openings 131 may be alternately covered on the film structure 130, so that the bonding positions between the battery cells 120 opposite to the openings 131 and the water cooling plates 150 are uniformly distributed, and the rigidity of the whole water cooling plates 150 is increased.
According to some embodiments of the present invention, referring to fig. 4, the form of the opening 131 is not particularly limited, for example, the opening 131 may be provided on the film structure, that is, both ends of the opening 131 are provided in the film structure 130, or one end of the opening 131 may be provided at the edge of the film structure 130 and be openly provided. The length of the opening 131 is not particularly limited, and for example, a long opening 131 may be provided in the width or length direction of the film structure 130 as long as the opening 131 does not cut the film structure 130, or a small opening 131 may be provided only at the edge of the film structure 130 in the width or length direction of the film structure 130.
According to some embodiments of the present invention, an explosion-proof valve (not shown in the drawings) is disposed on the battery cell 120, and in particular, the explosion-proof valve is disposed on a side wall of the battery cell 120, when the membrane structure 130 is disposed at the side wall of the battery cell 120, the opening 131 of the membrane structure 130 does not expose the explosion-proof valve, and the opening 131 may expose an area of the battery cell 120 other than the explosion-proof valve to prevent the adhesive layer 140 from contacting the explosion-proof valve and affecting the opening and closing of the explosion-proof valve.
According to some embodiments of the present invention, the thickness of the adhesive glue layer 140 is n and satisfies: n is more than or equal to 0.5mm and less than or equal to 1 mm. If the thickness of bonding glue film 140 is too thin, bond between electric core 120, membrane structure 130 and water-cooling plate 150 three is insecure, if the thickness of bonding glue film 140 is too thick, can influence the cooling effect of water-cooling plate 150, occupy the space of battery package 100 moreover, influence arranging of electric core 120.
According to some embodiments of the present invention, referring to fig. 2 and 3, in order to more accurately control the thickness of the adhesive layer 140, a limiting bar 160 may be disposed in the battery pack 100, the limiting bar 160 may be disposed between the membrane structure 130 and the water cooling plate 150, and the thickness of the adhesive layer 140 is not greater than the thickness of the limiting bar 160. Specifically, when the other surface of the film structure 130 is coated with the heat conducting structure adhesive, after the heat conducting structure adhesive is cured, the upper surface of the heat conducting structure adhesive should not be higher than the position limiting strip 160. Therefore, the influence of the over-thickness of the heat conducting structure glue on the cooling effect of the water cooling plate 150 is avoided. It should be noted that, in order to ensure that the thickness of the adhesive layer 140 in the battery pack 100 is kept as uniform as possible, a plurality of limiting strips 160 may be provided in the battery pack 100.
According to some embodiments of the present invention, the limiting bar 160 is configured to be plural, and the extending direction of the limiting bar 160 is the same as the stacking direction of the battery cells 120. For example, when the battery cells 120 are stacked in the first direction, the limiting strips 160 extend in the first direction, and a plurality of limiting strips 160 may be arranged in parallel in the battery pack 100, so that the limiting strips 160 can regulate and control the thickness of the adhesive layer 140, improve the strength of the battery cells 120, and suppress the expansion of the battery cells 120.
The energy cell according to the utility model is briefly described below.
The energy unit according to the present invention has the battery pack 100 according to any one of the above embodiments, and since the battery pack 100 according to any one of the above embodiments is disposed on the energy unit according to the present invention, the energy unit has all the features and advantages of the battery pack, and will not be described herein again. Overall, there is at least the advantage of higher safety performance.
In summary, the battery pack provided by the present application has the following advantages:
1) the opening 131 is formed in the film structure, part of the surface of the battery cell 120 is exposed at the opening 131, and the adhesive layer 140 is arranged at the opening 131, so that the exposed surface of the battery cell 120 can be fixed with the water cooling plate 150 through the adhesive layer 140, and compared with the arrangement mode that the battery cell 120 in the battery pack 100 is connected with the film structure 130 through the double-sided adhesive tape, the design can enable the battery cell 120 to be connected with the water cooling plate 150 through the adhesive layer 140, and because the adhesive force of the adhesive layer 140 is stronger, when the battery pack 100 is subjected to an external force, the film structure 130 and the water cooling plate 150 are not easy to be separated from the battery cell 120, so that the safety of the battery pack 100 is improved;
2) after the battery core 120, the membrane structure 130 and the water cooling plate 150 are fixed by the adhesive layer 140, the deformation of the water cooling plate 150 caused in the working process of the battery pack 100 can be avoided, and the rigidity of the water cooling plate 150 is improved;
3) the water-cooling plate 150 and the shell 110 are matched to form an accommodating cavity, the shell does not need to be arranged independently, so that the space occupied by the original water-cooling plate 150 is increased in the battery pack 100, more battery cells 120 can be arranged due to the increase of the space, and the electric quantity of the battery pack 100 is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery pack, comprising:
an electric core;
the water cooling plate covers the surface of the battery core and is suitable for exchanging heat with the battery core;
the membrane structure is arranged between the water cooling plate and the battery cell and is suitable for heating the battery cell, and the membrane structure is provided with an opening penetrating in the thickness direction;
and at least part of the bonding glue layer is arranged at the opening, and the bonding glue layer at the opening is used for bonding and fixing the battery cell and the water cooling plate.
2. The battery pack of claim 1, wherein the membrane structure is disposed on a side wall and/or a top wall and/or a bottom wall of the cell.
3. The battery pack according to claim 2, further comprising: the casing, be formed with in the casing and open and be suitable for and hold towards the top the chamber that holds of electricity core, the water-cooling board set up in electricity core top and with casing cooperation and seal hold the chamber in order to protect electricity core.
4. The battery pack of claim 1, wherein the cells are configured as a plurality arranged in a sequence in a first direction, the openings extend in the first direction and/or a second direction, each of the openings is disposed opposite to a plurality of the cells, and the first direction is orthogonal to the second direction.
5. The battery pack according to claim 4, wherein the opening is configured in plural, the plural openings are arranged at intervals in the first direction, the extending directions of two adjacent openings are arranged in parallel, and the starting ends and/or the ending ends of the two openings are arranged alternately.
6. The battery pack of claim 5, wherein the opening is disposed at one end at the edge of the membrane structure and is open.
7. The battery pack of claim 1, wherein the adhesive layer has a thickness n and satisfies: n is more than or equal to 0.5mm and less than or equal to 1 mm.
8. The battery pack of claim 7, further comprising: and the limiting strip is arranged between the membrane structure and the water cooling plate, and the thickness of the adhesive layer is not greater than that of the limiting strip.
9. The battery pack according to claim 8, wherein the stopper bar is configured in plurality and has the same extending direction as the stacking direction of the cells.
10. An energy unit, characterized in that it comprises a battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220416783.1U CN217009456U (en) | 2022-02-28 | 2022-02-28 | Battery pack and energy unit with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220416783.1U CN217009456U (en) | 2022-02-28 | 2022-02-28 | Battery pack and energy unit with same |
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| Publication Number | Publication Date |
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| CN217009456U true CN217009456U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220416783.1U Active CN217009456U (en) | 2022-02-28 | 2022-02-28 | Battery pack and energy unit with same |
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| CN (1) | CN217009456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060179A1 (en) * | 2022-09-23 | 2024-03-28 | 宁德时代新能源科技股份有限公司 | Heating curing device and heating curing method |
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2022
- 2022-02-28 CN CN202220416783.1U patent/CN217009456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060179A1 (en) * | 2022-09-23 | 2024-03-28 | 宁德时代新能源科技股份有限公司 | Heating curing device and heating curing method |
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