CN216980779U - Battery shell, single battery and battery pack with single battery - Google Patents
Battery shell, single battery and battery pack with single battery Download PDFInfo
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- CN216980779U CN216980779U CN202220377148.7U CN202220377148U CN216980779U CN 216980779 U CN216980779 U CN 216980779U CN 202220377148 U CN202220377148 U CN 202220377148U CN 216980779 U CN216980779 U CN 216980779U
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Abstract
The application discloses battery case, battery cell and battery package that has it. The battery case includes: the first shell is provided with a first upper sheet body, a first middle sheet body and a first lower sheet body which are sequentially connected, so that a first open slot is formed in the width direction in a matching manner; the second shell is provided with a second upper sheet body, a second middle sheet body and a second lower sheet body which are sequentially connected, so that a second open slot is formed in the width direction in a matching mode, the opening of the second open slot is opposite to the opening of the first open slot, the second upper sheet body is in lap joint with the first upper sheet body, and the second lower sheet body is in lap joint with the first lower sheet body, so that a containing space is formed between the first shell and the second shell; along the width direction, the side that is close to accommodating space in at least one in first shell and second shell includes a plurality of step portions, and the plane that the side surface of two adjacent step portions is located staggers in the direction of height. The battery shell can be used for mounting various electric core groups with different sizes in one accommodating space.
Description
Technical Field
The present application relates to the field of battery technologies, and more particularly, to a battery case, a single battery using the battery case, and a battery pack using the single battery.
Background
Can only pack into the laminate polymer battery core of a size in current battery case's the battery compartment, can't satisfy the laminate polymer battery core of two kinds of sizes of a module demand or more sizes.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a new technical scheme of battery shell, can solve the technical problem that only the electric core group of a size can be packed in prior art.
An object of this application is to provide a new technical scheme of battery cell, can solve the technical problem that can only pack into the electric core of a size among the prior art.
It is a further object of the present application to provide a battery pack having the above-described battery cell.
According to an object of the present application, there is provided a battery case having a length direction, a width direction, and a height direction, the battery case including: the first shell is provided with a first upper sheet body, a first middle sheet body and a first lower sheet body which are sequentially connected, so that a first open slot is formed in the width direction in a matched mode; the second shell is provided with a second upper sheet body, a second middle sheet body and a second lower sheet body which are sequentially connected, so that a second open slot is formed in the width direction in a matched mode, the opening of the second open slot is opposite to the opening of the first open slot, the second upper sheet body is in lap joint with the first upper sheet body, and the second lower sheet body is in lap joint with the first lower sheet body, so that a containing space is formed between the first shell and the second shell; along the width direction, at least one of the first outer shell and the second outer shell comprises a plurality of step parts on one side close to the accommodating space, and planes of one side surfaces of two adjacent step parts are staggered in the height direction.
Optionally, the sizes of the receiving spaces corresponding to two adjacent stepped portions in the width direction in the height direction are different.
Optionally, along the height direction, the first upper blade and the first lower blade are distributed at intervals and are oppositely arranged, and at least one of the first upper blade and the first lower blade, which is close to one side of the accommodating space, includes the step.
Optionally, along the height direction, the second upper blade is located on a side of the first upper blade away from the accommodating space, and the second lower blade is located on a side of the first lower blade away from the accommodating space.
Optionally, an end of the first upper panel and/or the first lower panel is in contact with the second middle panel along the width direction.
Optionally, along the width direction, the first lower blade includes a plurality of the steps, a transition portion extending along the height direction is provided between two adjacent steps, and an end of the second lower blade is in contact with the transition portion close to the second middle blade.
Optionally, the first housing is welded or bonded to the second housing.
According to a further object of the present application, there is provided a single battery, comprising at least one battery case, wherein the battery case is the battery case according to any one of the above embodiments; the plurality of electric core groups are arranged in the accommodating space, each electric core group is positioned in the accommodating space and is arranged at one step part, and each electric core group comprises at least one electric core.
Optionally, the single battery further includes: the limiting part is located at least one side of the electric core group in the width direction.
According to still another object of the present application, there is provided a battery pack including: at least one single battery, wherein the single battery is the single battery according to any one of the above embodiments; the tray is provided with a bearing surface, and the bearing surface is used for bearing the single battery.
According to one embodiment of the present disclosure, a plurality of step portions are provided on one side of the first casing and/or the second casing close to the receiving space, and the heights of the plurality of step portions are different, so that the electric core pack having various height dimensions can be installed in one receiving space.
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 an exploded view of a unit cell according to an embodiment of the present application;
FIG. 2 is a schematic structural view of an electric core pack according to an embodiment of the present application;
fig. 3 is an assembly schematic of a first housing and a retaining member of a battery cell according to an embodiment of the present application;
fig. 4 is an assembly view of a first housing, a stopper and a battery core pack of a unit cell according to an embodiment of the present application;
fig. 5 is a schematic structural view of a second housing of a unit cell according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a unit cell according to an embodiment of the present application.
Reference numerals
A single battery 100;
a battery case 10;
a first housing 11; a first upper sheet 111; a first middle panel 112; a first lower sheet 113; a first open groove 114;
a second housing 12; a second upper panel 121; a second middle panel 122; a second lower blade 123; a second open groove 124;
an accommodating space 13;
a step portion 141; a transition portion 142;
the electric core group 20;
a stopper 30.
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.
The battery case 10 according to the embodiment of the present application will be described in detail below with reference to the drawings.
As shown in fig. 1 to 6, a battery case 10 according to an embodiment of the present application has a length direction, a width direction, and a height direction, and the battery case 10 includes a first case 11 and a second case 12.
Specifically, the first housing 11 has a first upper blade 111, a first middle blade 112, and a first lower blade 113 connected in sequence to cooperatively form a first open groove 114 in the width direction.
The second housing 12 has a second upper plate 121, a second middle plate 122 and a second lower plate 123 connected in sequence, so that a second opening groove 124 is formed in the width direction in a matching manner, an opening of the second opening groove 124 is opposite to an opening of the first opening groove 114, the second upper plate 121 is in lap joint with the first upper plate 111, and the second lower plate 123 is in lap joint with the first lower plate 113, so that an accommodating space 13 is formed between the first housing 11 and the second housing 12.
Wherein, along the width direction, at least one side of the first housing 11 and the second housing 12 close to the receiving space 13 includes a plurality of step portions 141, and the planes of one side surfaces of two adjacent step portions 141 are staggered in the height direction.
In other words, the battery case 10 according to the embodiment of the present application is mainly composed of the first case 11 and the second case 12, and the battery case 10 has a length direction, a width direction, and a height direction, and the length direction may be the Y axis, the width direction may be the X axis, and the height direction may be the Z axis in a three-axis coordinate system. Wherein the dimension of the battery case 10 in the length direction may be larger than the dimension in the width direction, and the relationship between the dimension in the width direction and the dimension in the height direction is not limited, that is, the dimension in the width direction may be larger than, smaller than, or equal to the dimension in the height direction.
The first shell 11 has a first upper panel 111, a first middle panel 112 and a first lower panel 113 which are connected in sequence, that is, the first middle panel 112 is located between the first upper panel 111 and the first upper panel 111. A first opening groove 114 with an opening can be enclosed by the first upper sheet 111, the first middle sheet 112 and the first lower sheet 113, the opening direction of the first opening groove 114 is opened along the width direction, and at this time, the shape of the first housing 11 can be similar to "Contraband". Similarly, the second housing 12 has a second upper blade 121, a second middle blade 122 and a second lower blade 123 connected in sequence, the second upper blade 121, the second middle blade 122 and the second lower blade 123 may enclose a slot and a second slot 124, the opening direction of the second slot 124 is also opened along the width direction, and at this time, the second housing 12 may also be shaped like "Contraband". Since the opening of the first opening groove 114 is disposed opposite to the opening of the second opening groove 124, for example, in the width direction, the first housing 11 is located on the left side, the second housing 12 is located on the right side, the opening of the first housing 11 faces the right side, and the opening of the second housing 12 faces the left side. Since the second upper blade 121 is overlapped with the first upper blade 111 and the second lower blade 123 is overlapped with the first lower blade 113, the accommodating space 13 can be formed by the first housing 11 and the second housing 12. The receiving space 13 can be used for receiving the electric core assembly 20. Wherein, the first shell 11 and the second shell 12 are overlapped, so that a longer electric core group 20 can be assembled. Before assembly, the first housing 11 and the second housing 12 can be in a separated state, and during assembly, the electric core assembly 20 can be placed in the first opening groove 114 or the second opening groove 124, and then the first housing 11 and the second housing 12 are connected together, so as to receive the electric core assembly 20.
It should be noted that, in the width direction, a side of the first housing 11 and/or the second housing 12 close to the accommodating space 13 includes a plurality of step portions 141. That is, a plurality of step portions 141 may be sequentially provided in the first housing 11 and/or the second housing 12 in the width direction. Along the height direction, the heights of the side surfaces of two adjacent step portions 141 are different, that is, the planes of the side surfaces of two adjacent step portions 141 are staggered. The heights of the step surfaces of the two adjacent step portions 141 are set to be different, so that the heights of the parts of the accommodating spaces 13 corresponding to the two adjacent step portions 141 are different in the height direction, and therefore the electric core groups 20 with various height sizes can be placed in one accommodating space 13 at the same time, namely, electric cores with different sizes are assembled in one module.
Thus, according to the battery case 10 of the embodiment of the present application, by providing the plurality of step parts 141 on the first outer case 11 and/or the second outer case 12 at the side close to the receiving space 13 and the heights of the plurality of step parts 141 are different, the battery pack 20 having various height dimensions can be mounted in one receiving space 13.
According to an embodiment of the present application, two steps 141 adjacent in the width direction are different in size in the height direction of the corresponding housing space 13. For ease of understanding, the adjacent two step portions 141 are defined as a first step portion and a second step portion, which are sequentially distributed in the width direction. Whether the first step part and the second step part are located above or below the receiving space 13, the size of the receiving space 13 corresponding to the first step part in the height direction is different from the size of the receiving space 13 corresponding to the second step part in the height direction, so that the electric core pack 20 with various heights can be mounted in one receiving space 13.
In some embodiments of the present application, as shown in fig. 1 and 3, the first upper blade 111 and the first lower blade 113 are spaced apart and opposite to each other along the height direction, and at least one of the first upper blade 111 and the first lower blade 113 includes a step 141 on a side close to the accommodating space 13, that is, the step 141 may be separately provided on the first upper blade 111, or separately provided on the first lower blade 113, or simultaneously provided on the first upper blade 111 and the first lower blade 113. In the present embodiment, by providing the step portion 141 to the first housing 11, the processing of the step portion 141 is facilitated.
According to an embodiment of the present application, as shown in fig. 6, along the height direction, the second upper blade 121 is located on a side of the first upper blade 111 away from the accommodating space 13, and the second lower blade 123 is located on a side of the first lower blade 113 away from the accommodating space 13. For example, the first upper blade 111 is located above the first lower blade 113, the second upper blade 121 is located above the first upper blade 111, and the second lower blade 123 is located below the first lower blade 113, which facilitates the assembly of the first housing 11 and the second housing 12. When mounting, it is only necessary to set the opening of the second opening groove 124 of the second housing 12 toward the opening of the first opening groove 114 of the first housing 11, and then relatively move the second housing 12 and the first housing 11 to insert at least a portion of the first housing 11 into the second opening groove 124.
According to an embodiment of the present application, as shown in fig. 6, along the width direction, the end of the first upper sheet 111 and/or the first lower sheet 113 contacts the second middle sheet 122, that is, when the end of the first upper sheet 111 contacts the second middle sheet 122, during installation, the first upper sheet 111 moves toward the second middle sheet 122 until the end of the first upper sheet 111 abuts against the second middle sheet 122, so as to perform a limiting function and improve assembly efficiency. Similarly, the contact between the end of the first lower blade 113 and the second middle blade 122 can also improve the assembly efficiency.
In some embodiments of the present application, as shown in fig. 1 and 3, along the width direction, the first lower blade 113 includes a plurality of steps 141, a transition portion 142 extending along the height direction is provided between two adjacent steps 141, and an end of the second lower blade 123 contacts the transition portion 142 adjacent to the second middle blade 122. For convenience of description, the plurality of step portions 141 on the first lower blade 113 may be divided into a left step portion and a right step portion, a step surface of the left step portion and a step surface of the right step portion respectively extend in the width direction, and the left step portion is located at the lower left of the right step portion. In the present embodiment, the shape of the upper surface of the first lower blade 113 and the shape of the lower surface of the first lower blade 113 are matched, and the height of the housing space 13 above the left step portion is larger than the height of the housing space 13 above the right step portion. The right side of left side step portion is connected with the upper end of transition portion 142, and the lower extreme of transition portion 142 is connected with the left side of right step portion, and the left end of second lower lamellar body 123 extends to the right side contact with transition portion 142 left, carries out prepositioning to second lower lamellar body 123 when not only being favorable to the assembly, still is favorable to the first shell 11 after the assembly and the injecture of second shell 12 degree of freedom in the left and right directions. The contact of the second lower blade 123 with the first lower blade 113 above also facilitates the prepositioning and the definition of the degree of freedom in the up-down direction of the relative positional relationship between the assembled first housing 11 and second housing 12. Further, the step part 141 is not disposed on the first upper sheet 111, and the step part 141 is separately disposed on the first lower sheet 113, so that the manufacturing process is simplified.
In the present embodiment, the first lower sheet 113 having the transition portion 142 and the step portion 141 may be manufactured by bending, stamping, extrusion, or other processes. Further, the first housing 11 is an integral molding piece, that is, the first upper sheet 111, the first middle sheet 112 and the first lower sheet 113 can be connected together during production and processing. Similarly, the second housing 12 may also be an integrally formed component, which is not described in detail herein.
According to an embodiment of the present application, the first housing 11 is welded or bonded to the second housing 12, for example, the first upper sheet 111 and the second upper sheet 121, and the first lower sheet 113 and the second lower sheet 123 are welded or bonded, which is beneficial to improve the assembly efficiency between the first housing 11 and the second housing 12.
The present application also provides a single battery 100, as shown in fig. 1 and 6, the single battery 100 includes: at least one battery shell 10 and a plurality of electric core groups 20, wherein the battery shell 10 is the battery shell 10 described in any one of the above embodiments; the plurality of electric core groups 20 are arranged in the accommodating space 13, each electric core group 20 is located in the accommodating space 13 and arranged at one step portion 141, and each electric core group 20 comprises at least one electric core. When the battery pack 20 has a plurality of battery cells, the plurality of battery cells may be electrically connected in series, in parallel, or in series and parallel.
When the number of the battery cases 10 is plural, a plurality of connection methods, such as welding, bonding, abutting, etc., may be adopted between two adjacent battery cases 10.
In addition, the battery cell is provided with a long side, a high side and a thick side, the long side and the high side are matched to form a large surface, the long side and the thickness can be matched to form a small surface, and the area of the small surface is smaller than that of the large surface. A plurality of electric cores can be stacked along the width direction of the battery shell 10, and the convenience of assembling the electric core groups 20 with different heights into the accommodating space 13 can be improved on the basis of improving the number of the electric cores which can be accommodated.
Because step portion 141 is located the at least one side of the direction of height of battery casing 10, step portion 141 can with the facet contact of electric core, the high edge of electric core is extending along the direction of height of battery casing 10, not only is favorable to making electric core group 20 have the width of multiple size, is favorable to piling up more electric core groups 20 along the direction of width of battery casing 10 moreover.
According to an embodiment of the present application, the single battery 100 further includes a limiting member 30, the limiting member 30 is located at least one side of the electric core pack 20 in the width direction, and by providing the limiting member 30, the position of the electric core pack 20 in the receiving space 13, for example, the position in the width direction, can be limited.
The application also provides a battery pack, which comprises at least one single battery 100 and a tray, wherein the single battery 100 is the single battery 100 in any embodiment, the tray is provided with a bearing surface, the bearing surface is used for bearing the single battery 100, the shape of the bearing surface can be consistent with the shape of the surface of one side, close to the bearing surface, of the single battery 100, and the stability of the single battery 100 in the tray is improved.
The unit battery 100 according to the embodiment of the present application will be described in detail with reference to specific embodiments.
The first housing 11 is formed with a first open groove 114 with a right opening, the first lower plate 113 is provided with a left step and a right step, and the first upper plate 111 is a flat plate. The second housing 12 is formed with a second opening groove 124 opened leftward. The first shell 11 is made of an aluminum alloy material or other metal materials, and for convenience of description, the first shell 11 may be divided into two battery cell placing areas, namely a battery cell placing area one and a battery cell placing area two. The first battery cell placing area is located above the left step portion, and the second battery cell placing area is located above the right step portion.
The second housing 12 is made of an aluminum alloy material or other metal materials.
Before the first and second housings 11 and 12 are assembled, the first electric core set may be placed on the left step portion and the second electric core set may be placed on the right step portion. The first electric core group can be formed by electric cores of the same type in a serial connection and parallel connection mode, and the second electric core group can also be formed by electric cores of the same type in a serial connection and parallel connection mode. The height dimension of the first electric core group is different from that of the second electric core group 20, and the height difference between the electric core in the first electric core group and the electric core in the second electric core group does not influence the dressing area of the electric core in the second electric core group, so that the expansion of the first electric core group is not influenced.
The first casing 11 and the second casing 12 are integrated by welding, and after the first casing 11 and the second casing 12 are assembled together, the second casing 12 can close the right side of the cell placement area.
The assembling process of the first and second cases 11 and 12 and the electric core pack 20 will be described in detail below.
1) As shown in fig. 2, two single soft-packaged cells are stacked to form a first cell group and a second cell group;
2) as shown in fig. 3, the first housing 11 is fixed, and the stopper 30 is installed in the first housing 11;
3) as shown in fig. 4, the first and second electric core sets are installed in the first housing 11, and the module is positioned by the limiting member 30;
4) as shown in fig. 5, the limiting member 30 is fitted into the second housing 12;
5) as shown in fig. 6, the second housing 12 is mounted on the first housing 11;
6) as shown in fig. 6, the steps are repeated until the number of modules meets the requirement.
In summary, according to the battery case, the single battery 100 and the battery pack of the embodiment of the present application, by employing the battery case having the step part 141, it is possible to achieve the installation of the plurality of electric core packs 20 having different sizes. Through adopting first shell 11 and second shell 12 to cooperate, not only can realize having reduced the assembly degree of difficulty to the quick installation of the electric core group 20 of longer length, reduced the destroyed risk of electric core group 20 in the assembling process moreover, but also can improve the quantity of the electric core group 20 that can hold, improved battery capacity.
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 case, characterized in that the battery case has a length direction, a width direction, and a height direction, the battery case comprising:
the first shell is provided with a first upper sheet body, a first middle sheet body and a first lower sheet body which are sequentially connected, so that a first open slot is formed in the width direction in a matched mode;
the second shell is provided with a second upper sheet body, a second middle sheet body and a second lower sheet body which are sequentially connected, so that a second open slot is formed in the width direction in a matched mode, the opening of the second open slot is opposite to the opening of the first open slot, the second upper sheet body is in lap joint with the first upper sheet body, and the second lower sheet body is in lap joint with the first lower sheet body, so that a containing space is formed between the first shell and the second shell;
along the width direction, at least one of the first outer shell and the second outer shell comprises a plurality of step parts on one side close to the accommodating space, and planes of one side surfaces of two adjacent step parts are staggered in the height direction.
2. The battery case according to claim 1, wherein the receiving spaces corresponding to two of the step portions adjacent in the width direction are different in size in the height direction.
3. The battery case according to claim 2, wherein the first upper sheet and the first lower sheet are spaced apart and disposed opposite to each other along the height direction, and at least one of the first upper sheet and the first lower sheet includes the step portion on a side thereof close to the receiving space.
4. The battery case according to claim 3, wherein the second upper piece is located on a side of the first upper piece away from the receiving space, and the second lower piece is located on a side of the first lower piece away from the receiving space, along the height direction.
5. The battery case according to claim 4, wherein an end of the first upper sheet and/or the first lower sheet is in contact with the second middle sheet along the width direction.
6. The battery case according to claim 4, wherein the first lower sheet includes a plurality of the step portions along the width direction, a transition portion extending in the height direction is provided between two adjacent step portions, and an end of the second lower sheet is in contact with the transition portion adjacent to the second middle sheet.
7. The battery case as set forth in claim 1, wherein the first case is welded or bonded to the second case.
8. A cell, comprising:
at least one battery housing according to any one of claims 1-7;
the plurality of electric core groups are arranged in the accommodating space, each electric core group is positioned in the accommodating space and is arranged at one step part, and each electric core group comprises at least one electric core.
9. The cell defined in claim 8, further comprising:
the limiting part is located at least one side of the electric core group in the width direction.
10. A battery pack, comprising:
at least one cell according to claim 8 or 9;
the tray is provided with a bearing surface, and the bearing surface is used for bearing the single battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377148.7U CN216980779U (en) | 2022-02-17 | 2022-02-17 | Battery shell, single battery and battery pack with single battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377148.7U CN216980779U (en) | 2022-02-17 | 2022-02-17 | Battery shell, single battery and battery pack with single battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216980779U true CN216980779U (en) | 2022-07-15 |
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ID=82354276
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220377148.7U Active CN216980779U (en) | 2022-02-17 | 2022-02-17 | Battery shell, single battery and battery pack with single battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216980779U (en) |
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2022
- 2022-02-17 CN CN202220377148.7U patent/CN216980779U/en active Active
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