CN214336799U - Electric core cover plate and electric core - Google Patents
Electric core cover plate and electric core Download PDFInfo
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- CN214336799U CN214336799U CN202120665648.6U CN202120665648U CN214336799U CN 214336799 U CN214336799 U CN 214336799U CN 202120665648 U CN202120665648 U CN 202120665648U CN 214336799 U CN214336799 U CN 214336799U
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- cover plate
- explosion
- switching piece
- proof valve
- flanging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to an apron provides an electricity core apron and electric core. Electric core apron, including top cap (1) and switching piece (2) of welding on this top cap (1) bottom surface, be formed with boss (11) on the top surface of top cap (1), be connected with explosion-proof valve (3) on boss (11), switching piece (2) are in including switching piece body (21) and setting the flanging (22) on switching piece body (21) outer edge, be provided with through-hole (211) on switching piece body (21). Electric core, be provided with foretell electric core apron, electric core casing and electric core utmost point group. The utility model provides an electricity core apron can improve the welding yield between top cap and the switching piece, improves the safety in utilization of battery.
Description
Technical Field
The utility model relates to an apron, in particular to electricity core apron. The utility model discloses still relate to the electric core including this electricity core apron.
Background
Among the batteries in the current market, the lithium ion batteries (lithium ion batteries and lithium high polymer batteries) have the best performance, and the energy of the lithium ion batteries with the same quality is 4-6 times that of lead-acid batteries and 2-3 times that of nickel-hydrogen batteries. The price of the opposite lithium ion battery is slightly expensive, and the price disadvantage is mainly relative to the lead-acid storage battery and the like. The lithium ion battery has the potential of recycling, and can solve the problem of the requirement on raw materials. The price of the final lithium ion battery decreases after large-scale commercialization. In fact, more and more automobile manufacturers at home and abroad select the lithium ion battery as the power battery of the electric automobile, and the research on the lithium ion battery technology is continuously broken through.
The switching piece is as the connecting piece of the connection piece in connecting top cap and the electric core, can realize the intercommunication of circuit. In the prior art, the adapter plate is mostly connected with the connecting plate in the top cover or the battery core in a welding mode, but because the laser energy density is higher, the phenomena of welding through and welding crack are easy to occur, so that the welding quality of the battery is influenced, and even the performance of the battery is influenced by serious people. In addition, in the prior art, the distance between the transfer sheet and the explosion-proof valve is small, so that the damage of the explosion-proof valve or the change of the explosion pressure can be caused by the heat conduction or stress problem in the laser welding process in the welding process, and the use safety of the battery is further influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an electricity core apron can improve the welding yield between top cap and the switching piece, improves the safety in utilization of battery.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an electricity core apron, includes top cap and the switching piece of welding on this top cap bottom surface, be formed with the boss on the top surface of top cap, be connected with explosion-proof valve on the boss, the switching piece is in including switching piece body and setting the flanging on the outer edge of switching piece body, be provided with the through-hole on the switching piece body.
Furthermore, the upper surface of the flanging protrudes out of the upper surface of the adapter plate body, and the distance between the upper surface of the adapter plate body and the upper surface of the flanging is smaller than or equal to 5 mm.
Further, the width of the outward flanging is smaller than or equal to 15 mm; the adapter plate body is circular, and the ratio of the radius of the adapter plate body to the width of the outward flange is 5-8: 1.
Furthermore, the thickness of the outward flange is smaller than or equal to 2mm, and the thickness ratio of the adapter piece body to the outward flange is 1.5-2.5: 1.
Furthermore, the through holes are arranged in a plurality of distributed manner on the adapter plate body.
Furthermore, the adaptor piece body is circular, the through-hole is the arc hole, and is a plurality of the through-hole circumference sets up on the adaptor piece body.
Furthermore, a positioning hole is formed in the adapter plate body.
Furthermore, an explosion-proof valve patch is arranged on the explosion-proof valve.
Furthermore, a sealing layer is connected to the adapter plate, and the sealing layer and the top cover are respectively located on two sides of the adapter plate.
Compared with the prior art, electric core cover plate have following advantage:
electric core apron, through be formed with the boss on the top surface of top cap to with explosion-proof valve setting on this boss, can increase the spacing distance between switching piece and the explosion-proof valve, reduce the welding and to the influence of explosion-proof valve, guarantee the safe handling of battery. The outward flange on the switching piece body is used for welding the switching piece and the top cover, so that the welding effect of the switching piece and the top cover can be improved, the influence of welding on the explosion-proof valve can be further reduced in an edge welding mode, and the use safety of the explosion-proof valve is guaranteed.
Another object of the utility model is to provide an electricity core can improve the welding yield between top cap and the switching piece, improves the safety in utilization of battery.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an electric core is provided with an electric core pole group, an electric core shell and the electric core cover plate.
The advantages of the battery cell and the battery cell cover plate are the same compared with the prior art, and are not described herein again.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an exploded schematic view of a structure of a cell cover plate according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a transfer plate according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is an enlarged schematic view of part B of fig. 2.
Description of reference numerals:
1 Top cover 2 switching piece
3 explosion-proof valve 4 explosion-proof valve paster
5 sealing layer
11 boss
21 adaptor plate body 22 flanging
211 through hole 212 positioning hole
Detailed Description
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
In addition, the terms "upper", "lower", "top" and "bottom" and the like in the embodiments of the present invention indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and based on the cell cover plate, one side of the cell cover plate connected to the cell pole group is the lower surface of the cell cover plate, and correspondingly, the other side surface is the upper surface of the cell cover plate. The terminology is based on the orientations and positional relationships illustrated in the drawings and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.
It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
The utility model discloses a basic embodiment provides a cell cover plate, as shown in fig. 1, including top cap 1 and the switching piece 2 of welding on this top cap 1 bottom surface, be formed with boss 11 on top surface of top cap 1, be connected with explosion-proof valve 3 on the boss 11, switching piece 2 includes switching piece body 21 and sets up the flanging 22 on switching piece body 21 outer edge, is provided with through-hole 211 on the switching piece body 21.
According to the utility model discloses, be formed with the opening on the boss 11, explosion-proof valve 3 sets up at the opening part to can guarantee that the inside gas that produces of electricity core discharges from explosion-proof valve 3, thereby prevent to produce the explosion because gaseous too in the electricity core. The explosion-proof valve 3 can be the explosion-proof valve 3 disclosed in the prior art, and the connection mode of the explosion-proof valve 3 also adopts the connection mode disclosed in the prior art. The adaptor piece body 21 and the flanging 22 can be integrally formed or can be formed in other manners. Through-hole 211 on the switching piece body 21 can be designed for arbitrary can be with the hole of electrolyte injection to electric core inside, can be the hole of shapes such as circular port, quad slit, rectangular hole, waist shape hole. The adapter plate 2 and the top cover 1 are made of conductive materials disclosed in the prior art, such as metal and conductive polymer materials. Preferably made of steel and hard aluminum materials, has better conductivity and lower cost.
When the electric core cover plate that above-mentioned basic embodiment provided used, with the connection piece welding on switching piece body 21 and the electric core utmost point group, flanging 22 and top cap 1 welding, thereby realize the connection of electric core utmost point group and top cap 1, in the use, the inside gas that produces of electric core can be discharged from the through-hole 211 on the switching piece body 21, convey to explosion-proof valve 3 department smoothly, when the inside atmospheric pressure of electric core reached a definite value, gaseous from discharging in explosion-proof valve 3, the atmospheric pressure resumes normally in the electric core.
The battery core cover plate provided by the basic embodiment is characterized in that the boss 11 is formed on the top surface of the top cover 1, and the explosion-proof valve 3 is arranged on the boss 11, so that the spacing distance between the adapter sheet 2 and the explosion-proof valve 3 can be increased, the influence of welding on the service performance of the explosion-proof valve 3 is reduced, and the safe use of a battery is ensured. Through the flanging 22 that will set up at the outer border of switching piece body 21 with switching piece 2 and top cap 1 welding, not only can improve both welded effects, flanging 22 is far away with explosion-proof valve 3's linear distance moreover, can further reduce welding process to explosion-proof valve 3's influence, guarantees explosion-proof valve 3's safety in utilization.
The adaptor piece body 21 and the top cap 1 can be arranged on one side of the outer flanging 22 and can also be arranged on two sides of the outer flanging 22, no matter the adaptor piece body 21 and the top cap 1 are arranged on one side of the outer flanging 22 or on two sides of the outer flanging 22, an interval is arranged between the upper surface of the adaptor piece body 21 and the lower surface of the boss 11, so that the gas inside the battery cell is directly discharged from the anti-explosion valve 3 by preventing the adaptor piece body 21 and the anti-explosion valve 3 from being in direct contact with each other, and the anti-explosion performance of the battery is influenced. In order to further guarantee the safety in utilization of electric core, the utility model discloses an among the specific embodiment, as shown in fig. 1, the upper surface protrusion in the upper surface of adaptor piece body 21 of flanging 22, the distance between the upper surface of adaptor piece body 21 and the upper surface of flanging 22 is less than or equal to 5 mm. Specifically, the adaptor piece body 21 and the top cover 1 are disposed on both sides of the outward turned edge 22. Design like this can increase adaptor piece 2 and explosion-proof valve 3 at the distance of space height, avoids leading to explosion-proof valve 3 damage or burst pressure to change because of the distance is too near in connection piece laser welding in-process heat conduction or stress problem, and then promotes electric core security performance. Preferably, the distance between the upper surface of the adapter sheet body 21 and the upper surface of the flanging 22 is 0.2mm-1mm, which not only can ensure the distance between the adapter sheet body and the explosion-proof valve 3, but also can reduce the manufacturing cost of the adapter sheet 2.
In one embodiment of the present invention, as shown in fig. 2 and 4, the width L of the flange 22 is less than or equal to 15 mm; the adapter sheet body 21 is circular, and the ratio of the radius of the adapter sheet body 21 to the width L of the outward flange 22 is 5-8: 1.
Specifically, the outward flange 22 is a flange with a uniform width, and is matched with the adapter sheet body 21. When the adapter plate body 21 is circular, the outward turning edge 22 is circular and matched with the adapter plate body 21, and the width of the outward turning edge 22 is the difference between the outer radius and the inner radius of the circular outward turning edge 22; when the adapter plate body 21 is square, the outward turning edge 22 is a square ring matched with the adapter plate body 21, and the width of the outward turning edge 22 is half of the difference value between the outer side length and the inner side length of the square ring; when the adapter plate body 21 is polygonal, the outward flange 22 is a polygonal ring matched with the adapter plate body 21, and the width of the outward flange 22 is the vertical distance from any point on the outer edge to the inner edge corresponding to the outward flange.
The width of restriction flanging 22 and the ratio of the radius of adaptor piece body 21 and the width L of flanging 22 can guarantee the normal welding between adaptor piece 2 and top cap 1, also can not be because the area of flanging 22 is great to cause unnecessary extravagant, reduction in production cost.
In order to further secure the welding area while reducing unnecessary waste, it is preferable that the width L of the burring 22 is 1.5mm to 5 mm.
The utility model discloses an among the concrete embodiment, flanging 22's thickness is less than or equal to 2mm, and in the welding process with top cap 1, can guarantee that the electric current circulation is stable, also can reduce the whole height of battery apron simultaneously, the space that is more than can be used for improving the size of electric core utmost point group, and then promotes the energy density of monomer electric core. Preferably, in order to further improve the stability of current flowing and the energy density of the battery cell, the thickness of the outward flange 22 is 0.2mm to 1 mm. Further preferably, the thickness ratio of the adapter sheet body 21 to the flanging 22 is 1.5-2.5: 1. The design can reduce the adverse phenomenon in the welding process of the battery and the connecting sheet, thereby ensuring the welding quality of the battery and ensuring the corresponding current conduction performance, machinability and safety.
In order to further improve the safety of the battery, in a specific embodiment of the present invention, the through holes 211 are provided in a plurality, and the through holes 211 are dispersedly disposed on the interposer body 21. With a plurality of through-holes 211 dispersion setting on adaptor piece body 21, can make the inside gas that produces of electricity core in time discharge through a plurality of through-holes 211.
Preferably, as shown in fig. 1 and 2, the interposer body 21 is circular, the through holes 211 are arc-shaped holes, and the through holes 211 are circumferentially disposed on the interposer body 21. Through the arc hole of circumference setting on switching piece body 21, furthest promotes ventilative area and has guaranteed intensity again, and electric core internal pressure in time conducts to explosion-proof valve, promotes the security performance.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, the interposer body 21 is provided with a positioning hole 212. Convenient welding position promotes electric core processing uniformity.
Specifically, the positioning hole 212 may be disposed at any suitable position on the interposer body 21, and in a specific embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the positioning hole 212 is disposed at a central position of the interposer body 21.
In one embodiment of the present invention, as shown in fig. 1, an explosion-proof valve patch 4 is disposed on the explosion-proof valve 3. The explosion-proof valve patch 4 can be the explosion-proof valve patch 4 disclosed in the prior art, and the explosion-proof valve patch 4 arranged on the explosion-proof valve 3 can protect the explosion-proof valve 3, so that the service life of the explosion-proof valve 3 is prolonged.
In a specific embodiment of the present invention, as shown in fig. 1, a sealing layer 5 is connected to the interposer 2, and the sealing layer 5 and the top cover 1 are respectively located on two sides of the interposer 2. The tightness of the connection between the cell cover plate and the shell can be further improved by the sealing layer 5.
Specifically, the sealing layer 5 may be any structure or component capable of achieving a sealing effect in the prior art, and may be a sealing ring, a sealing strip, or a structure with a sealing ring or a sealing strip.
In a relatively preferred embodiment of the present invention, as shown in fig. 1-4, a cell cover plate is provided, which includes a top cap 1 and an adaptor sheet 2 welded on the bottom surface of the top cap 1, the adaptor sheet 2 includes an adaptor sheet body 21 and a flanging 22 disposed at the outer edge of the adaptor sheet body 21, the adaptor sheet body 21 is circular, and the flanging 22 is a circular ring shape matching with the adaptor sheet body 21; the width L of the outward flange 22 is smaller than or equal to 15mm, the thickness of the outward flange 22 is smaller than or equal to 2mm, the ratio of the radius of the adapter sheet body 21 to the width L of the outward flange 22 is 5-8:1, and the thickness ratio of the adapter sheet body 21 to the outward flange 22 is 1.5-2.5: 1; the adapter plate body 21 is provided with a positioning hole 212 and a plurality of through holes 211, the through holes 211 are arc-shaped holes, and the through holes 211 are circumferentially arranged on the adapter plate body 21; a boss 11 is formed on the top surface of the top cover 1, an explosion-proof valve 3 is connected to the boss 11, and an explosion-proof valve patch 4 is arranged on the explosion-proof valve 3; the sealing layer 5 is arranged on the bottom surface of the adapter sheet 2.
When the battery core cover plate provided by the preferred embodiment is used, the connecting piece on the adapter piece body 21 and the battery core pole group is welded, the outward flanging 22 and the top cover 1 are welded, so that the connection between the battery core pole group and the top cover 1 is realized, and the sealing layer 5 is arranged between the adapter piece 2 and the battery core shell to ensure the sealing property of the connecting part between the battery core cover plate and the battery core shell. In the use, the inside gas that produces of electricity core can be discharged from the through-hole 211 on the switching piece body 21 to convey to explosion-proof valve 3 department smoothly, when the inside atmospheric pressure of electricity core reaches a definite value, explosion-proof valve 3 is opened, the gas outgoing of being convenient for, thereby guarantees the safe handling of electricity core.
According to the battery core cover plate provided by the preferred embodiment, the boss 11 is formed on the top surface of the top cover 1, the adapter sheet 2 is connected to the bottom of the top cover 1, and the explosion-proof valve 3 is arranged on the boss 11, so that the spacing distance between the adapter sheet 2 and the explosion-proof valve 3 can be increased, the influence of welding on the service performance of the explosion-proof valve 3 is reduced, and the safe use of a battery is ensured. Safety is improved by increasing the spatial distance between the explosion-proof valve and the valve. Through the flanging 22 that will set up at the outer border of switching piece body 21 with switching piece 2 and top cap 1 welding, not only can improve both welded effects, flanging 22 is far away with explosion-proof valve 3's linear distance moreover, can further reduce welding process to explosion-proof valve 3's influence, guarantees explosion-proof valve 3's safety in utilization. Set up adaptor piece body 21 and top cap 1 in the both sides of flanging 22, can further improve the distance between explosion-proof valve 3 and the adaptor piece body 21 to prevent that adaptor piece body 21 and connection piece welded heat from to explosion-proof valve 3's normal use production influence. Through the arc hole of circumference setting on switching piece body 21, furthest promotes ventilative area and has guaranteed intensity again, and electric core internal pressure in time conducts to explosion-proof valve, promotes the security performance.
In a specific embodiment of the battery cell of the present invention, the battery cell includes a battery cell electrode assembly, a battery cell casing and a battery cell cover plate mentioned in any one of the above technical solutions.
The battery core pole group is arranged in the battery core shell, the battery core cover plate is connected with the battery core pole group, and a closed space can be formed between the battery core cover plate and the battery core shell and used for storing the battery core pole group.
The battery cell has all the advantages of the battery cell cover plate, and the description is omitted.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electricity core apron, its characterized in that includes top cap (1) and welding switching piece (2) on this top cap (1) bottom surface, be formed with boss (11) on the top surface of top cap (1), be connected with explosion-proof valve (3) on boss (11), switching piece (2) are in including switching piece body (21) and setting the flanging (22) on switching piece body (21) outer edge, be provided with through-hole (211) on switching piece body (21).
2. The cell cover plate of claim 1, wherein an upper surface of the outward flange (22) protrudes from an upper surface of the adapter sheet body (21), and a distance between the upper surface of the adapter sheet body (21) and the upper surface of the outward flange (22) is less than or equal to 5 mm.
3. The cell cover plate of claim 1, wherein the width (L) of the flanging (22) is less than or equal to 15 mm;
the adapter sheet body (21) is circular, and the ratio of the radius of the adapter sheet body (21) to the width (L) of the flanging (22) is 5-8: 1.
4. The cell cover plate of claim 1, wherein the thickness of the flanging (22) is less than or equal to 2mm, and the thickness ratio of the adaptor piece body (21) to the flanging (22) is 1.5-2.5: 1.
5. The cell cover plate of claim 1, wherein the through holes (211) are provided in plurality, and the through holes (211) are dispersedly provided on the interposer body (21).
6. The electrical core cover plate of claim 5, wherein the interposer body (21) is circular, the through holes (211) are arc-shaped holes, and the plurality of through holes (211) are circumferentially disposed on the interposer body (21).
7. The cell cover plate of claim 1, wherein the interposer body (21) is provided with positioning holes (212).
8. The cell cover plate according to any of claims 1 to 7, characterized in that an explosion-proof valve patch (4) is arranged on the explosion-proof valve (3).
9. The electrical core cover plate of any one of claims 1 to 7, wherein a sealing layer (5) is connected to the interposer (2), and the sealing layer (5) and the top cover (1) are respectively located on two sides of the interposer (2).
10. A battery cell, characterized in that a cell pole group, a cell casing and a cell cover plate according to any of claims 1 to 9 are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665648.6U CN214336799U (en) | 2021-03-31 | 2021-03-31 | Electric core cover plate and electric core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665648.6U CN214336799U (en) | 2021-03-31 | 2021-03-31 | Electric core cover plate and electric core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214336799U true CN214336799U (en) | 2021-10-01 |
Family
ID=77889331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120665648.6U Active CN214336799U (en) | 2021-03-31 | 2021-03-31 | Electric core cover plate and electric core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214336799U (en) |
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2021
- 2021-03-31 CN CN202120665648.6U patent/CN214336799U/en active Active
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