CN218569109U - Battery and electronic equipment - Google Patents
Battery and electronic equipment Download PDFInfo
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- CN218569109U CN218569109U CN202223092540.6U CN202223092540U CN218569109U CN 218569109 U CN218569109 U CN 218569109U CN 202223092540 U CN202223092540 U CN 202223092540U CN 218569109 U CN218569109 U CN 218569109U
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- edge
- battery
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- battery cell
- encapsulation
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- 238000005538 encapsulation Methods 0.000 claims abstract description 93
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000012785 packaging film Substances 0.000 claims abstract description 7
- 229920006280 packaging film Polymers 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 16
- 230000007306 turnover Effects 0.000 abstract description 9
- 230000004308 accommodation Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The embodiment of the application provides a battery and electronic equipment, wherein the battery comprises a first battery cell, a second battery cell, a packaging film and a partition board; the packaging film forms a packaging cavity, the packaging cavity is divided into a first containing cavity and a second containing cavity which are arranged in a stacked mode by a partition board, a first battery cell is contained in the first containing cavity, a second battery cell is contained in the second containing cavity, and the projection of the first edge of the first battery cell on the second battery cell is located in the area where the second battery cell is located; the packaging film comprises a first packaging edge close to a first edge, the first packaging edge is turned over towards the first battery cell, and the projection of the first packaging edge in the thickness direction of the first battery cell is located in the area where the second battery cell is located. Like this, turn over towards first electric core through the first encapsulation limit that will be close to the first edge of first electric core and turn over the book, and turn over the edge that the book back first encapsulation limit can not bulge and set up with first edge homonymy on the second electric core, can reduce the occupation of encapsulation limit in the space outside electric core edge to improve battery energy density.
Description
Technical Field
The present application relates to the field of battery technology, and in particular, to a battery and an electronic device.
Background
The lithium ion battery is widely applied to products such as cameras, electric tools, electric automobiles and the like, and along with the improvement of market requirements, the improvement of the working voltage of the lithium ion battery is more and more urgent.
At present, in a method for increasing the operating voltage of a lithium ion battery, a plurality of identical battery cells are stacked and connected in series in the same package casing, and for example, two identical battery cells are stacked, in order to increase the space utilization rate of the battery, a sealing edge extending from the direction of the battery cell is usually folded, so as to reduce the occupied space of the sealing edge in the battery. Because the folded sealing edge protrudes out of the surface of the battery core, the space of the battery in the direction of the sealing edge is increased, and further, the energy density of the battery is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a battery and electronic equipment to solve when a plurality of single electric cores stack, folding banding protrusion has increased the space of battery in this banding place direction in electric core surface, makes the problem that battery energy density is low.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a battery, including a first battery cell, a second battery cell, an encapsulation film, and a separator;
the packaging film forms a packaging cavity, the packaging cavity is divided into a first containing cavity and a second containing cavity which are arranged in a stacked mode by a partition board, the first containing cavity contains the first electric core, the second containing cavity contains the second electric core, and the projection of the first edge of the first electric core on the second electric core is located in the area where the second electric core is located;
the packaging film comprises a first packaging edge close to the first edge, the first packaging edge turns over towards the first battery cell, and the projection of the first packaging edge in the thickness direction of the first battery cell is located in the area where the second battery cell is located.
Optionally, a projection of a second edge of the first cell on the second cell is located in an area where the second cell is located, and the first edge and the second edge are two edges of the first cell that are oppositely disposed in a width direction of the first cell.
Optionally, the encapsulation film includes a second encapsulation edge close to the second edge, the second encapsulation edge is turned over toward the first battery cell, and a projection of the second encapsulation in the thickness direction of the first battery cell is located in an area where the second battery cell is located.
Optionally, wherein a width of the first cell is less than a width of the second cell.
Optionally, in the thickness direction of the first cell, the height of the first encapsulation edge is less than or equal to the thickness of the first cell.
Optionally, the encapsulation film further includes at least one bending edge extending from the first encapsulation edge toward the first cell direction;
in the thickness direction of the first battery cell, the bending height of the bending edge is less than or equal to the thickness of the first battery cell.
Optionally, the bending edge is located in an edge region of the first cell on the same side as the first edge of the first cell and the second cell.
Optionally, the distance between the first edge of the first battery cell and the same-side edge of the second battery cell is greater than or equal to 0.2mm. Optionally, a first included angle is formed between the first package edge and the first edge, and the angle of the first included angle is smaller than or equal to 90 degrees.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the battery according to the first aspect.
In this application embodiment, this battery includes first electric core, second electric core, encapsulation membrane and baffle, and the encapsulation membrane forms the encapsulation chamber, and the baffle separates into first holding chamber and the second holding chamber of range upon range of arrangement with the encapsulation chamber, and first holding chamber holding first electric core, and second holding chamber holding second electric core, first edge are located second electric core place region at the projection of second electric core, and the encapsulation membrane is including the first encapsulation limit that is close to first edge, and first encapsulation limit turns over towards first electric core, just first encapsulation limit is in the projection of the thickness direction of first electric core is located in the region that second electric core place. Like this, turn over through the first encapsulation limit that will be close to first edge and turn over towards first electric core, and turn over the edge that the first encapsulation limit that turns over the setting can not bulge on the second electric core and set up with first edge homonymy, can reduce the occupation of encapsulation limit in the outer space of electric core edge to improve battery energy density.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of two cells arranged in an overlapping manner in the related art;
fig. 2 is a schematic structural diagram of a receiving cavity of two batteries in the related art;
fig. 3 is a schematic view of a battery according to the related art;
fig. 4 is a schematic view of a package structure of a battery in the related art;
fig. 5 is a first schematic structural diagram of a battery according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a battery according to an embodiment of the present application;
fig. 7 is a schematic structural diagram three of a battery provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance. But merely to distinguish between different components. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
In order to increase the operating voltage of a lithium ion battery, two cells are usually stacked and connected in series in the same package. Referring to fig. 1 to 3, a partition is disposed in the package case, the partition divides the package case into an upper package case and a lower package case, and then the upper package body and the lower package body of the package case are hermetically connected to each other by the partition to realize packaging. To improve the space utilization of the battery, the sealing edge extending in the width direction of the battery is usually folded, as shown in fig. 4 below. However, the thickness of the aluminum-plastic film and the separator is overlapped to form a thicker packaging edge, and further, the thicker folding edge occupies the space of the battery, so that the energy density of the lithium ion battery is influenced.
In order to solve the above technical problems, embodiments of the present application provide a battery and an electronic device, and the present application is specifically described in detail by the following embodiments.
Fig. 5 to 7 are schematic structural diagrams of a battery according to an embodiment of the present disclosure. The battery comprises a first battery core 10, a second battery core 20, an encapsulation film 30 and a partition plate 40;
the encapsulation film 30 forms an encapsulation cavity, the partition plate 40 divides the encapsulation cavity into a first accommodation cavity and a second accommodation cavity which are arranged in a stacked manner, the first accommodation cavity accommodates the first electric core 10, the second accommodation cavity accommodates the second electric core 20, and a projection of the first edge 11 of the first electric core 10 on the second electric core 20 is located in a region where the second electric core 20 is located;
the encapsulation film 30 includes a first encapsulation edge 31 close to the first edge 11, the first encapsulation edge 31 is folded toward the first battery cell 10, and a projection of the first encapsulation edge 31 in the thickness direction of the first battery cell 10 is located in the area of the second battery cell 20.
It should be understood that the tabs of the first cell 10 and the second cell 20 in the stacked arrangement are located at the same encapsulation edge on the encapsulation film 30, and the first encapsulation edge 31 may be any encapsulation edge of the encapsulation film 30 except the encapsulation edge where the tabs of the first cell 10 and the second cell 20 are located.
Taking the first battery cell 10 and the second battery cell 20 as an example, both of which are rectangular cells, in this case, the separator 40 is also rectangular. The first encapsulation edge 31 is an encapsulation edge sandwiched between the first side of the separator 40, and the first side of the separator 40 may be one of three sides except the side of the separator 40 where the tabs of the first cell 10 and the second cell 20 are located. The first edge 11 of the first battery cell 10 is located in an area where the second battery cell 20 is located in the projection of the second battery cell 20, the first encapsulation edge 31 is turned over toward the first battery cell 10, and the first encapsulation edge 31 after turning over cannot exceed an edge on the second battery cell 20, which is located on the same side as the first edge 11.
In the embodiment of the present application, the battery includes a first battery cell 10, a second battery cell 20, an encapsulation film 30 and a partition board 40, the encapsulation film 30 forms an encapsulation cavity, the partition board 40 separates the encapsulation cavity into a first accommodation cavity and a second accommodation cavity which are arranged in a stacked manner, the first accommodation cavity accommodates the first battery cell 10, the second accommodation cavity accommodates the second battery cell 20, the projection of the first edge 11 on the second battery cell 20 is located in the area where the second battery cell 20 is located, the encapsulation film 30 includes a first encapsulation edge 31 close to the first edge 11, the first encapsulation edge 31 is turned over towards the first battery cell 10, and the projection of the first encapsulation edge 31 in the thickness direction of the first battery cell 10 is located in the area where the second battery cell 20 is located. Like this, turn over through the first encapsulation limit 31 that will be close to first edge 11 and turn over towards first electric core 10, and turn over the edge that first encapsulation limit 31 that turns over the setting can not bulge on second electric core 20 and set up with first edge 11 homonymy, can reduce the occupation of first encapsulation limit 31 in the outer space of electric core edge to improve battery energy density.
In an alternative embodiment, the distance between the first edge 11 of the first battery cell 10 and the same-side edge of the second battery cell 20 is greater than or equal to 0.2mm.
In this embodiment, the distance between the first edge 11 of the first battery cell 10 and the edge on the same side of the second battery cell 20 is greater than or equal to 0.2mm, so that the first package edge 31, which is turned over toward the first battery cell 10, does not exceed the edge on the second battery cell 20, which is disposed on the same side as the first edge 11.
In an alternative embodiment, the first encapsulation edge 31 and the first edge 11 have a first included angle therebetween, and the angle of the first included angle is smaller than or equal to 90 degrees.
It should be understood that, the first encapsulation edge 31 is the first encapsulation edge 31 after being turned over, and the angle of the included angle between the first encapsulation edge 31 and the first edge 11 is smaller than or equal to 90, that is, the first encapsulation edge 31 after being turned over toward the first cell 10 does not exceed the edge on the second cell 20, which is disposed on the same side as the first edge 11, and does not occupy the space outside the edge on the same side of the second cell 20 as the first edge 11 of the first cell 10, so as to improve the energy density of the battery.
In an alternative embodiment, a projection of the second edge 12 of the first battery cell 10 on the second battery cell 20 is located in an area where the second battery cell 20 is located, and the first edge 11 and the second edge 12 are two oppositely disposed edges.
It is to be understood that the second edge 12 of the first cell 10 may be an edge disposed opposite to the first edge 11 of the first cell 10, in which case the first encapsulation edge 31 and the second encapsulation edge 32 are two encapsulation edges disposed opposite to each other on the encapsulation film 30.
Taking the first battery cell 10, the second battery cell 20, and the separator 40 as rectangular shapes, and the first battery cell 10 and the second battery cell 12 are two oppositely disposed edges of the first edge 11 of the first battery cell 10, the projection of the second edge 12 of the first battery cell 10 on the second battery cell 20 is located in an area where the second battery cell 20 is located, when the second encapsulation edge 32 is turned over toward the first battery cell 10, the turned-over second encapsulation edge 32 may not exceed an edge of the second battery cell 20 that is disposed on the same side as the second edge 12, where a distance between an edge of the first battery cell 10 that is disposed on the same side as the first edge 11 on the first battery cell 20 and a distance between an edge of the second battery cell 12 that is disposed on the same side as the second edge 12 on the second battery cell 20 are both greater than or equal to 0.2mm. At this time, in the case where the first edge 11 and the second edge 12 are two edges that are oppositely disposed in the width direction on the first battery cell 10, that is, in the width direction of the first battery cell 10, the width of the first battery cell 10 is smaller than the width of the second battery cell 20, and specifically, the two battery cells differ by a width value greater than or equal to 0.4mm.
In another alternative embodiment, the second edge 12 of the first cell 10 may also be an edge connected to the first edge 11 of the first cell 10, in which case the first encapsulation edge 31 and the second encapsulation edge 32 are two encapsulation edges adjacently disposed on the encapsulation film 30.
It should be understood that, also taking the first battery cell 10, the second battery cell 20 and the separator 40 as an example, all have a rectangular shape, in this case, in the width direction of the first battery cell 10, the width of the first battery cell 10 is smaller than the width of the second battery cell 20, and in the length direction of the first battery cell 10, the length of the first battery cell 10 is smaller than the length of the second battery cell 20, specifically, the width value of the difference between the two battery cells is greater than or equal to 0.2mm, and the length value of the difference between the two battery cells is greater than or equal to 0.2mm.
In an alternative embodiment, the encapsulation film 30 includes a second encapsulation edge 32 close to the second edge 12, the second encapsulation edge 32 is folded toward one side of the first battery cell 10, and a projection of the second encapsulation edge 12 in the thickness direction of the first battery cell 10 is located in an area where the second battery cell 20 is located.
In this embodiment, the second encapsulation edge 32 close to the second edge 12 is turned over toward the first electrical core 10, and the second encapsulation edge 32 that is turned over and provided does not protrude from the edge that is provided on the second electrical core 20 and on the same side as the second edge 12, so that the occupation of the space of the second encapsulation edge 32 outside the electrical core edge can be reduced, and the energy density of the battery can be improved.
In some optional embodiments, in the thickness direction of the first battery cell 10, the height of the first encapsulation edge 31 is less than or equal to the thickness of the first battery cell 10.
It should be understood that the first package edge 31 may have a narrower package width, so that the folded first package edge 31 is smaller than or equal to the thickness of the first battery cell 10.
In some optional embodiments, the encapsulation film 30 further includes at least one bending edge extending from the first encapsulation edge 31 toward the first battery cell 10;
in the thickness direction of the first battery cell 10, the bending height of the bending edge is less than or equal to the thickness of the first battery cell 10.
It should be understood that, at this time, the first encapsulation edge 31 has a larger encapsulation width, so that the folded first encapsulation edge 31 is greater than the thickness of the first battery cell 10, and at this time, the first encapsulation edge 31 exceeding the thickness of the first battery cell 10 (i.e., the bending edge) may be bent toward the first battery cell 10, so that the first encapsulation edge 31 is less than or equal to the thickness of the first battery cell 10. In a specific implementation, the number of the bent edges is related to the size of the first package edge 31 before being folded, and this embodiment is not limited thereto.
In some optional embodiments, the bending edge is located in the same side edge region of the first edge 11 of the first cell 10 and the second cell 20. In some optional embodiments, in the thickness direction of the first battery cell 10, the height of the second encapsulation edge 32 is less than or equal to the thickness of the first battery cell 10.
In some optional embodiments, the encapsulation film 30 further includes at least one bending edge extending from the second encapsulation edge 32 toward the first cell 10;
in the thickness direction of the first battery cell 10, the bending height of the bending edge is less than or equal to the thickness of the first battery cell 10.
In some optional embodiments, the bending edge is located in the same side edge region of the first edge of the first cell and the second cell.
In some optional embodiments, the second package edge and the second edge have a second included angle therebetween, and the angle of the second included angle is smaller than or equal to 90 degrees.
Since the second package edge 32 has the same function and the same structure as the first package edge 31 in the above embodiment, the second package edge 32 can also achieve all the technical effects of the above embodiment related to the first package edge 31, and the details are not repeated herein.
The application also provides an electronic device comprising the battery. Since the technical solution of this embodiment includes all technical solutions of the above embodiments, at least all technical effects of the above embodiments can be achieved, and details are not repeated here.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A battery is characterized by comprising a first battery cell, a second battery cell, an encapsulation film and a partition board;
the packaging film forms a packaging cavity, the packaging cavity is divided into a first containing cavity and a second containing cavity which are arranged in a stacked mode by a partition board, the first containing cavity contains the first electric core, the second containing cavity contains the second electric core, and the projection of the first edge of the first electric core on the second electric core is located in the area where the second electric core is located;
the packaging film comprises a first packaging edge close to the first edge, the first packaging edge turns over towards the first battery cell, and the projection of the first packaging edge in the thickness direction of the first battery cell is located in the area where the second battery cell is located.
2. The battery of claim 1, wherein a projection of the second edge of the first cell onto the second cell is located in a region where the second cell is located, and the first edge and the second edge are two oppositely disposed edges.
3. The battery of claim 2, wherein the encapsulation film further comprises a second encapsulation edge near the second edge, the second encapsulation edge is folded toward the first cell, and a projection of the second encapsulation in the thickness direction of the first cell is located in an area where the second cell is located.
4. The battery of claim 1, wherein the first cell has a width that is less than a width of the second cell.
5. The battery of claim 1, wherein a height of the first encapsulation edge in a thickness direction of the first cell is less than or equal to a thickness of the first cell.
6. The battery of claim 1, wherein the encapsulation film further comprises at least one bent edge extending from the first encapsulation edge in a direction toward the first cell;
in the thickness direction of the first battery cell, the bending height of the bending edge is less than or equal to the thickness of the first battery cell.
7. The battery of claim 6, wherein the bending edge is located in a same side edge region of the first edge of the first cell and the second cell.
8. The battery of claim 1, wherein the distance between the first edge of the first cell and the same-side edge of the second cell is greater than or equal to 0.2mm.
9. The battery of claim 1, wherein the first encapsulation edge and the first edge have a first included angle therebetween, the first included angle being less than or equal to 90 degrees.
10. An electronic device comprising the battery according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092540.6U CN218569109U (en) | 2022-11-21 | 2022-11-21 | Battery and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092540.6U CN218569109U (en) | 2022-11-21 | 2022-11-21 | Battery and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218569109U true CN218569109U (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223092540.6U Active CN218569109U (en) | 2022-11-21 | 2022-11-21 | Battery and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218569109U (en) |
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- 2022-11-21 CN CN202223092540.6U patent/CN218569109U/en active Active
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