CN211980699U - Battery end plate and battery module - Google Patents
Battery end plate and battery module Download PDFInfo
- Publication number
- CN211980699U CN211980699U CN202020743354.6U CN202020743354U CN211980699U CN 211980699 U CN211980699 U CN 211980699U CN 202020743354 U CN202020743354 U CN 202020743354U CN 211980699 U CN211980699 U CN 211980699U
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- Prior art keywords
- end plate
- battery
- plate body
- glue overflow
- notch
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- 239000003292 glue Substances 0.000 claims abstract description 61
- 238000007731 hot pressing Methods 0.000 claims abstract description 20
- 238000010030 laminating Methods 0.000 claims abstract description 14
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 13
- 238000001125 extrusion Methods 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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)
Abstract
The utility model relates to the field of battery modules, and discloses a battery end plate and a battery module, wherein the battery end plate comprises an end plate body and an insulating sheet, and an avoidance notch for avoiding the side edge of an electric core is arranged on the side edge position of the end surface of the end plate body; insulating piece hot pressing laminating is seted up in the end plate body and is dodged on the terminal surface of notch, and the one side of the end plate body of not laminating of insulating piece is used for laminating with electric core. The insulating sheet of the utility model is hot-pressed and attached on the end surface of the end plate body, thereby realizing the insulation treatment of the end surface of the end plate body, and on the one hand, glue is saved by hot-pressing and attaching; on the other hand, the insulation sheet of the hot-pressing fit is not easy to fall off, and the safety of the battery end plate when being pressed against the side surface of the battery core is improved. In addition, the avoiding notch can avoid the side position of the square winding battery cell with thin middle and thick two sides, the contact stress between the middle part of the square winding battery cell and the battery end plate is increased, the excessive extrusion of the side of the square winding battery cell is reduced, and the safety of the battery end plate extruding the battery cell is improved.
Description
Technical Field
The utility model relates to a battery module technical field especially relates to a battery end plate and battery module.
Background
The battery module usually welds the wall through end plate and the curb plate of metal material each other and is used for pressing from both sides the tight accommodation space who holds a plurality of electric cores that pile up side by side. When the stacked cells are clamped between two end plates, the end plates provide important support for clamping the cells. And in order to guarantee the security and the insulating nature of electric core in the battery module, can add between electric core and end plate usually and establish the insulating piece.
In the prior art, the structure of the end plate is generally a simple cuboid structure. When the battery module is assembled, the one side of the insulating sheet is laminated on the side surface of the end plate through glue, and the other side of the insulating sheet is laminated on the side surfaces of the end parts of the plurality of side-by-side stacked electric cores through the glue. The design structure has more problems, which are mainly shown in that: 1. the insulation sheet is directly and simply adhered between the end plate and the battery cell through glue, when the adhesion force of the glue is insufficient, the situation that the insulation sheet cannot be adhered easily occurs, particularly, the side surface of the end plate is smooth, the adhesion between the end plate and the insulation sheet is most prone to failure, and further the battery cell in the battery module is unstable in position fixation and sways, and the swaying of the battery cell in the battery module and the friction between the battery cell and the inner wall of the shell of the battery module easily cause the abrasion and short circuit of the battery cell, so that great hidden danger exists, and the safety is poor; 2. when pressing the battery cell of the square winding type with the smooth end plate of this type of side and having the thick project organization in middle thin both sides, the side position that appears the end plate easily becomes main contact position with the both sides of battery cell, and then the both sides of too much extrusion battery cell easily, and destroy the problem of the protection film of battery cell both sides.
Therefore, it is desirable to provide a battery end plate and a battery module, which can solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery end plate can improve the security of electric core assembly in the battery module.
To achieve the purpose, the utility model adopts the following technical proposal:
a battery end plate comprising:
the end plate comprises an end plate body, wherein an avoiding notch for avoiding the side edge of the battery cell is formed in the side edge position of the end surface of the end plate body;
the insulating piece, the insulating piece hot pressing laminate in offering of end plate body dodge on the terminal surface of notch, the not laminating of insulating piece the one side of end plate body is used for laminating with electric core.
Optionally, the end plate body is of a tetragonal structure, the number of the avoiding notches is two, one of the avoiding notches is arranged on one side edge of the end plate body extending in the vertical direction, and the other avoiding notch is arranged on the other side edge of the end plate body extending in the vertical direction.
Optionally, the avoiding notch is of a long strip structure extending in the vertical direction, one end of the avoiding notch penetrates through the upper end of the end plate body, and the other end of the avoiding notch penetrates through the lower end of the end plate body.
Optionally, the end face of the end plate body, on which the avoiding notch is formed, is further provided with a plurality of glue overflowing grooves, and when the insulating sheet is attached to the end face of the end plate body, on which the avoiding notch is formed, in a hot-pressing manner, the insulating sheet avoids the notches of the glue overflowing grooves.
Optionally, the glue overflow groove is in a strip through groove structure, one end of the glue overflow groove penetrates through the upper end of the end plate body, and the other end of the glue overflow groove penetrates through the lower end of the end plate body.
Optionally, the glue overflow grooves are arranged on the end surface of the end plate body at intervals along the horizontal direction.
Optionally, the number of the glue overflow grooves is three, and the three glue overflow grooves are uniformly arranged on the end face of the end plate body at intervals along the horizontal direction.
Optionally, the insulating sheet has a plurality of, each overflow gluey groove will the terminal surface of end plate body is cut apart into a plurality of binding face of arranging along the horizontal direction interval, each binding face is gone up respectively the hot pressing and is laminated and have one the insulating sheet.
Optionally, the insulating sheet is made of a PET material.
Another object of the utility model is to provide a battery module can improve the security of electric core assembly in the battery module.
To achieve the purpose, the utility model adopts the following technical proposal:
a battery module includes the battery end plate as described above.
The utility model has the advantages that:
the utility model discloses a laminating insulating piece hot pressing on the terminal surface of end plate body, realized the insulating treatment to the side of pressing the electricity core of end plate body, compare the simple glue that passes through to laminate the insulating piece and bond on the end plate body, the utility model discloses an insulating piece hot pressing laminating is on the end plate body advantage lies in, and the use of glue has been saved in the hot pressing laminating on the one hand; on the other hand, the insulating sheet of the hot-pressing laminating is not easy to fall off from the end plate body, and the safety of the battery end plate when being pressed against the side surface of the battery core is further improved. In addition, the avoiding notch can avoid the side position of the square winding battery cell with thin middle and thick two sides, the contact stress between the middle part of the square winding battery cell and the battery end plate is increased, the excessive extrusion of the side of the square winding battery cell is reduced, and the safety of the battery end plate extruding the battery cell is improved.
Drawings
Fig. 1 is a schematic view of a disassembled structure of a battery end plate provided by the present invention;
fig. 2 is a schematic top view of a battery end plate provided by the present invention;
fig. 3 is a schematic view of a disassembly structure of the battery module according to the present invention.
In the figure:
1-cell end plate; 11-an end plate body; 111-glue overflow groove; 112-avoiding the notch; 12-an insulating sheet; 2-electric core; 3-side plate; 4-module cover.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1-2, the present embodiment provides a battery end plate, which includes an end plate body 11 and an insulating sheet 12, where the insulating sheet 12 is made of PET, and the thickness of the insulating sheet 12 is 0.15 mm. In the figure, X represents a horizontal direction and Y represents a vertical direction. The end plate body 11 is of an aluminum extrusion integral molding structure, the weight is light, the hardness is high, and an avoidance notch 112 for avoiding the side edge of the battery cell is formed in the side edge position of the end surface of the end plate body 11; the insulating sheet 12 is attached to the end face of the end plate body 11, which is provided with the avoiding notch 112, in a hot-pressing manner, and one face of the insulating sheet 12, which is not attached to the end plate body 11, is used for being attached to the battery core.
Compare the simple connected mode of laminating insulating piece 12 on end plate body 11 through glue among the prior art, this embodiment is laminated insulating piece 12 hot pressing on end plate body 11's terminal surface, has realized the insulating processing to the terminal surface that is used for extrudeing electric core side of end plate body 11, and insulating piece 12 hot pressing laminating is in the advantage of end plate body 11: on one hand, the hot-pressing lamination saves the use of glue; on the other hand, the insulation sheet 12 which is attached in a hot pressing mode is not easy to fall off from the end plate body 11, and therefore the safety of the battery end plate when the battery end plate is pressed against the side face of the battery core is improved. Moreover, the avoidance notch 112 formed in the end face side position of the end plate body 11 can avoid the side edge of the battery core, so that too much extrusion to the side edge of the battery core is reduced, the contact stress between the middle part of the battery core and the battery end plate is increased, and the safety of extruding the battery core by the battery end plate is improved. Especially for the middle thin and thick square winding battery cell, when the end plate body 11 of the battery end plate presses against the middle thin and thick square winding battery cell, the side of the square winding battery cell can be reduced by too much extrusion of the end plate body 11, and the problem that the protective film on the side of the square winding battery cell is damaged by too much extrusion is solved.
Further, in the present embodiment, the end plate body 11 has a tetragonal structure, and the number of the escape recesses 112 is two. Along piling up the direction of electric core, when the laminating of battery end plate is on the tip side of piling up electric core, one of two dodges notch 112 and offers on the edge that extends along vertical direction of end plate body 11, another dodges notch 112 and offers on another edge that extends along vertical direction of end plate body 11, and then can dodge two side positions of electric core, increase the contact atress between the middle part position of electric core and the end plate body 11, improve extruded security. Specifically, the avoidance notch 112 is a long-strip notch structure extending along the vertical direction, one end of the avoidance notch 112 penetrates through the upper end of the end plate body 11, the other end of the avoidance notch 112 penetrates through the lower end of the end plate body 11, the avoidance notch 112 is simple in structure and convenient to process, and good avoidance can be formed on two side edges of the battery cell.
Further, it is conceivable that, when the battery end plate is attached to the side of the end portion of the stacked cell, the upper side of the end plate body 11 may be lower than the upper side of the stacked cell extending in the horizontal direction, and the upper side of the end plate body 11 is located above the lower side of the stacked cell extending in the horizontal direction, and further the end plate body 11 may further avoid the upper side and the lower side of the stacked cell extending in the horizontal direction, and finally the battery end plate may avoid the peripheral sides of the stacked cell, so that the contact pressure between the battery end plate and the stacked cell is concentrated in the middle area of the stacked cell, and the safety of the pressing is further improved.
Further, when the side surface of the end plate body 11 to which the insulating sheet 12 is not attached by hot pressing is attached to the side surface of the battery cell by glue, the glue overflow amount of the glue around the end plate body 11 is reduced. As shown in fig. 1-2, in the present embodiment, the end surface of the end plate body 11 provided with the avoiding notch 112 is further provided with an adhesive overflow groove 111, and when the insulating sheet 12 is attached to the end surface of the end plate body 11 provided with the avoiding notch 112 in a hot-pressing manner, the insulating sheet 12 avoids the notches of the adhesive overflow grooves 111, so that most of the adhesive overflow can flow into the adhesive overflow groove 111. Specifically, as shown in fig. 1-2, in this embodiment, the glue overflow groove 111 is a long strip-shaped through groove structure, one end of the glue overflow groove 111 runs through the upper end of the end plate body 11, the other end of the glue overflow groove 111 runs through the lower end of the end plate body 11, when the battery end plate is attached to the side surface of the battery cell through glue, most of glue overflow flows into the glue overflow groove 111, the glue overflow amount around the end plate body 11 is reduced, the welding fixation of the end plate body 11 and the side plate is facilitated when the subsequent battery module is assembled, and excessive glue overflow around the end plate body 11 is not needed. In addition, because in this embodiment, the height of end plate body 11 along vertical direction is higher than the width of end plate body 11 along horizontal direction, consequently overflows gluey groove 111 and is the rectangular shape that is along vertical direction and leads to the groove structure, has longer length, can hold more overflow gluey.
Further, as shown in fig. 1-2, the glue overflow grooves 111 are arranged on the end surface of the end plate body 11 at intervals along the horizontal direction, and the glue overflow grooves 111 are arranged at intervals, so that the glue overflow at each position can overflow into the glue overflow grooves 111 at a relatively short distance. More specifically, as shown in fig. 1-2, in the present embodiment, there are three glue overflow grooves 111, the three glue overflow grooves 111 are uniformly arranged on the end surface of the end plate body 11 at intervals along the horizontal direction, the number of the glue overflow grooves 111 is moderate, and further, under the condition that the glue overflow grooves 111 can accommodate more glue overflow, the number of the grooves of the glue overflow grooves 111 is reduced, the processing difficulty and the processing cost are reduced, the glue overflow grooves 111 are uniformly arranged at intervals, which is beneficial for uniform glue overflow at different positions to overflow into each glue overflow groove 111.
Further, in order to avoid the notches of the glue overflow grooves 111, when the end of the insulating plate 12, which is not attached to the end plate body 11, is attached to the side surface of the electric core through glue, the glue overflow can flow into the glue overflow grooves 111 quickly, as shown in fig. 1-2, four insulating sheets 12 are provided, three glue overflow grooves 111 divide the end surface of the end plate body 11 into a plurality of attaching surfaces which are arranged at intervals along the horizontal direction, each attaching surface is respectively provided with one insulating sheet 12 through hot-pressing attachment, and thus the notches of the glue overflow grooves 111 are ensured to be in an open state and not covered by the insulating sheets 12, and the glue overflow can flow into the glue overflow grooves 111.
In addition, as shown in fig. 3, the present embodiment further provides a battery module, where the battery module includes a plurality of cells 2 stacked together in sequence, and along the stacking direction of the cells 2, two ends of each cell 2 are respectively clamped and attached to the battery end plate 1 provided in the present embodiment. When clamping and bonding are carried out, firstly, coating the glue on the side surface of the electric core 2 in a Z shape; then, the insulating sheet 12 on the end plate body 11 is adhered to the side surface of the cell 2 by a zigzag glue. A curb plate 3 has been arranged respectively to the both sides of the electric core 2 that piles up, the welded fastening connection of the both ends difference one-to-one of curb plate 3 is on two battery end plate 1, module lid 4 lid is established at electric core 2, the battery end plate 1's of the battery module of this embodiment structure can improve the security of electric core 2 in the battery module, and reduce battery module assembling process, battery end plate 1 overflow all around glues the welded fastening influence to follow-up and curb plate, and the side position of dodging electric core 2 can be dodged to the notch 112 of seting up on the side position of the terminal surface of the excessive groove 111 of seting up of end plate body 11, thereby alleviate the extrusion to the both sides position of electric core 2, make the main atress position of electric core 2 shift to the intermediate position between electric core 2 both sides, the security of electric core 2. Especially for the square winding battery cell with a structure with a thin middle part and thick two sides, the design of the avoiding notch 112 can better reduce the extrusion on the two sides of the square winding battery cell, and further improve the overall safety of the battery module.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A battery end plate, comprising:
the end plate comprises an end plate body (11), wherein an avoidance notch (112) for avoiding the side edge of the battery cell is formed in the side edge position of the end surface of the end plate body (11);
insulating piece (12), insulating piece (12) hot pressing laminate in seted up of end plate body (11) dodge on the terminal surface of notch (112), not laminating of insulating piece (12) the one side of end plate body (11) is used for laminating with electric core.
2. The battery end plate according to claim 1, wherein the end plate body (11) has a tetragonal structure, and the number of the relief notches (112) is two, wherein one of the relief notches (112) is provided on one side edge of the end plate body (11) extending in the vertical direction, and the other relief notch (112) is provided on the other side edge of the end plate body (11) extending in the vertical direction.
3. The battery end plate according to claim 2, wherein the relief notches (112) are in an elongated structure extending in the vertical direction, and one end of the relief notches (112) penetrates through the upper end of the end plate body (11) and the other end penetrates through the lower end of the end plate body (11).
4. The battery end plate according to claim 1, wherein a plurality of glue overflow grooves (111) are further formed in the end surface of the end plate body (11) on which the avoiding notch (112) is formed, and when the insulating sheet (12) is attached to the end surface of the end plate body (11) on which the avoiding notch (112) is formed by hot pressing, the insulating sheet (12) avoids the notches of the glue overflow grooves (111).
5. The battery end plate according to claim 4, wherein the glue overflow groove (111) is a strip-shaped through groove structure, one end of the glue overflow groove (111) penetrates through the upper end of the end plate body (11), and the other end penetrates through the lower end of the end plate body (11).
6. The battery end plate according to claim 5, wherein the glue overflow grooves (111) are arranged on the end face of the end plate body (11) at intervals in the horizontal direction.
7. The battery end plate according to claim 6, wherein the number of the glue overflow grooves (111) is three, and the three glue overflow grooves (111) are uniformly arranged on the end face of the end plate body (11) at intervals along the horizontal direction.
8. The battery end plate of claim 4, wherein the insulating sheet (12) has a plurality of insulating sheets, each glue overflow groove (111) divides the end face of the end plate body (11) into a plurality of bonding surfaces arranged at intervals along the horizontal direction, and each bonding surface is thermally pressed and bonded with one insulating sheet (12).
9. The battery end plate of claim 1, wherein the insulating sheet (12) is made of PET.
10. A battery module comprising the battery end plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020743354.6U CN211980699U (en) | 2020-05-08 | 2020-05-08 | Battery end plate and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020743354.6U CN211980699U (en) | 2020-05-08 | 2020-05-08 | Battery end plate and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211980699U true CN211980699U (en) | 2020-11-20 |
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ID=73370488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020743354.6U Active CN211980699U (en) | 2020-05-08 | 2020-05-08 | Battery end plate and battery module |
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| Country | Link |
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| CN (1) | CN211980699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346183A (en) * | 2021-05-12 | 2021-09-03 | 凯博能源科技有限公司 | Battery pack, battery module and battery pack |
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2020
- 2020-05-08 CN CN202020743354.6U patent/CN211980699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346183A (en) * | 2021-05-12 | 2021-09-03 | 凯博能源科技有限公司 | Battery pack, battery module and battery pack |
| US12040502B2 (en) | 2021-05-12 | 2024-07-16 | Calb Technology Co., Ltd. | Battery apparatus, battery module, and battery pack |
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