CN210224110U - Lithium battery cover plate structure capable of improving capacity - Google Patents
Lithium battery cover plate structure capable of improving capacity Download PDFInfo
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- CN210224110U CN210224110U CN201921169754.4U CN201921169754U CN210224110U CN 210224110 U CN210224110 U CN 210224110U CN 201921169754 U CN201921169754 U CN 201921169754U CN 210224110 U CN210224110 U CN 210224110U
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- negative pole
- cover plate
- lithium battery
- plate structure
- insulating pad
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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 discloses a can improve lithium cell cover plate structure of capacity, it includes insulating pad, cover down the apron of insulating pad upper surface, setting are in down negative pole subassembly and the positive pole subassembly of apron upper surface, correspond on the apron negative pole subassembly position is provided with sunken negative pole mount pad, sunken negative pole mount pad bottom is formed with the support base of negative pole subassembly, just the base middle part is provided with the through-hole, sunken negative pole mount pad upper portion is turned over to the enstrophe and is formed with sawtooth turn-over portion. The utility model discloses can improve the stability of lithium cell internal capacity and can ensure lithium cell apron performance, reduce equipment accessory quantity, reduce the processing cost, reduce the accessory assembly degree of difficulty.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a can improve lithium cell cover plate structure of capacity.
[ background of the invention ]
When the power lithium battery is installed on a power vehicle, the lithium battery can be placed in a box body to form a battery pack, the battery pack is sealed by a cover plate, and electric conduction is achieved through electric elements arranged on the cover plate. The lithium battery cover plate is provided with the positive rivet and the negative rivet to realize the conduction of the internal electrode of the battery and external electrical elements, the sealing of the positive rivet and the negative rivet is one of the main consideration factors of the structural design of the lithium battery cover plate in order to ensure the sealing performance inside the battery, and the light weight and the battery capacity are also research hotspots in the field in order to improve the endurance mileage of new energy automobiles.
In the prior art, the fixing of the positive rivet and the negative rivet of the battery cover plate is generally realized by arranging a connecting structure on the upper surface and the lower surface of the cover plate for riveting, and the upper surface and the lower surface of the cover plate are both provided with sealing rings, and the number of electrode assemblies is more, so that the internal resistance value of the cover plate in batch production is not stable enough, the weight is large, the improvement of endurance mileage is not facilitated, and the lower surface of the cover plate is also provided with the electrode assemblies, so that the internal capacity of the battery pack; when going under multiple operating mode, the jolt of automobile body can make the not hard up of electrode lead to contact failure in the battery apron, seriously influences normal power supply.
Therefore, there is a need to provide a new cover plate structure of a lithium battery capable of increasing the capacity to solve the above problems.
[ Utility model ] content
An object of the utility model is to provide a can improve the lithium cell apron structure of capacity, can improve the lithium cell internal capacity and can ensure the stability of lithium cell apron performance, reduced equipment accessory quantity, reduced the processing cost, reduced the accessory assembly degree of difficulty.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a can improve lithium cell cover plate structure of capacity, it includes insulating pad, cover down the apron of insulating pad upper surface, setting are in down the negative pole subassembly and the positive pole subassembly of apron upper surface, on the apron corresponding to negative pole subassembly position is provided with sunken negative pole mount pad, sunken negative pole mount pad bottom is formed with the support base of negative pole subassembly, just the base middle part is provided with the through-hole, sunken negative pole mount pad upper portion is formed with sawtooth turn-ups portion to the enstrophe book will the negative pole subassembly compresses tightly to be fixed on the apron.
Further, the explosion-proof membrane is embedded between the lower insulating pad and the cover plate.
Further, the negative pole subassembly is including setting up sealing washer in the formula of sinking negative pole mount pad, being located negative pole rivet on the sealing washer, will the sealing washer with negative pole rivet is fixed to be compressed tightly the negative pole insulation pad in the formula of sinking negative pole mount pad.
Furthermore, a plurality of concave notches are formed in the circumferential surface of the negative rivet, and bulges clamped into the concave notches are arranged on the surface of the inner cavity of the negative insulation pad.
Further, a step surface pressed by an upper portion of the negative electrode insulating pad is formed on an upper surface of the negative electrode rivet.
Furthermore, the negative pole insulating pad comprises an inner shell, an outer shell and an annular clamping groove formed by surrounding the inner shell and the outer shell, and the sawtooth flanging part of the sinking type negative pole mounting seat is inserted into the annular clamping groove to fix the negative pole insulating pad.
Furthermore, the negative electrode insulating pad is of a circular cover body structure, and the upper surface of the negative electrode rivet extends out of the upper surface of the negative electrode insulating pad.
Furthermore, the negative pole insulating pad compresses the negative pole rivet by pressing the step surface, wraps the periphery of the sunken negative pole mounting seat, and compresses and obtains the rotation stopping torque force through the sawtooth flanging part.
Furthermore, a profiling accommodating groove is formed in the lower insulating pad corresponding to the position of the explosion-proof membrane, and the explosion-proof membrane is arranged in the profiling accommodating groove.
Furthermore, a profiling opening is formed in the cover plate corresponding to the position of the explosion-proof membrane, and a surface sticker covered by the explosion-proof membrane is arranged at the profiling opening.
Compared with the prior art, the utility model discloses a can improve lithium cell cover plate structure of capacity's beneficial effect lies in: the lithium battery cover plate has the advantages that the internal capacity of the lithium battery can be improved, the performance stability of the lithium battery cover plate can be guaranteed, the number of assembly accessories is reduced, the processing cost is reduced, and the assembly difficulty of the accessories is reduced.
[ description of the drawings ]
Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cover plate sinking type negative electrode mounting seat in an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structural view of a negative electrode assembly in an assembly structure according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a negative electrode insulating pad according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a negative rivet in an embodiment of the present invention;
description of reference numerals:
100 the lithium battery cover plate structure capable of improving the capacity;
1, a lower insulating pad, 11 a profiling accommodating groove; 2, a cover plate, 21 a sunken negative pole mounting seat, 22 through holes, 23 sawtooth flanging parts, 24 profiling through holes and 25 supporting base platforms; 3, a negative electrode component, a 31 sealing ring, a 32 negative electrode rivet, a 321 concave notch, a 322 step surface, a 33 negative electrode insulating pad, a 331 bulge, a 333 inner shell, a 334 outer shell and a 335 annular clamping groove; 4, an explosion-proof membrane; 5 a positive electrode assembly; 6 pieces of paste.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, a lithium battery cover plate structure 100 capable of improving capacity in the present embodiment includes a lower insulating pad 1, a cover plate 2 covering an upper surface of the lower insulating pad 1, a negative electrode assembly 3 and a positive electrode assembly 4 disposed on an upper surface of the cover plate 2, and an explosion-proof film 5 embedded between the lower insulating pad 1 and the cover plate 2.
A sunken negative electrode mounting seat 21 is arranged on the cover plate 2 corresponding to the position of the negative electrode assembly 3, a supporting base 25 for supporting the negative electrode assembly 3 is formed at the bottom of the sunken negative electrode mounting seat 21, a through hole 22 is formed in the middle of the base, and the upper part of the sunken negative electrode mounting seat 21 is inwards turned over to form a sawtooth turning part 23 for pressing and fixing the negative electrode assembly 3 on the cover plate 2.
The negative electrode assembly 3 includes a seal ring 31 provided in the sunken negative electrode mount 21, a negative electrode rivet 32 provided on the seal ring 31, and a negative electrode insulating pad 33 fixing the seal ring 31 and the negative electrode rivet 32 in the sunken negative electrode mount 21.
The circumferential surface of the negative rivet 32 is provided with a plurality of concave notches 321, and the upper surface of the negative rivet 32 is provided with a step surface 322 pressed by the upper part of the negative insulation pad 33. The surface of the inner cavity of the negative insulation pad 33 is provided with a protrusion 331 which is clamped into the concave notch 321. The negative insulating pad 33 includes an inner casing 333 and an outer casing 334, and a ring-shaped groove 335 surrounded by the inner casing 333 and the outer casing 334, and the sawtooth flanging part 23 of the sunken negative mounting seat 21 is inserted into the ring-shaped groove 335.
The negative insulation pad 33 is of a circular cover body structure, the upper surface of the negative rivet 32 extends out of the upper surface of the negative insulation pad 33, the negative insulation pad 33 compresses the negative rivet 32 through the pressing step surface 322, the negative insulation pad 33 wraps the periphery of the sunken negative mounting seat 21, the compression is realized through the sawtooth flanging part 23, and the rotation stopping torsion is obtained.
The cover plate 2 is provided with a profiling through opening 24 corresponding to the position of the explosion-proof film 5. The lower insulating pad 1 is provided with a profiling accommodating groove 11 corresponding to the position of the rupture disk 5, the rupture disk 5 is arranged in the profiling accommodating groove 11, and the profiling opening 24 is provided with a surface paste 6 covering the rupture disk 5.
The positive electrode component 4 and the cover plate 2 are of an integrated structure, and the cover plate 2 directly provides a positive electrode of a lithium battery.
The lithium battery cover plate structure 100 capable of improving capacity of the embodiment has the beneficial effects that: the cover plate is provided with the inward sawtooth flanging to provide fastening support for the cathode insulating pad, the cathode insulating pad is tightly pressed on the cover plate, and the torsion stopping force is provided, so that the stability and firmness of the installation of the cathode assembly are greatly improved; the negative electrode assembly and the positive electrode assembly can be arranged on the upper surface of the cover plate, so that the space inside the lithium battery is improved, and the energy density is increased; the cover plate directly provides the positive electrode of the lithium battery, and other accessories are not needed, so that the number of the accessories is reduced, the weight of the lithium battery cover plate is greatly reduced, and the energy density is increased; the torsion of the lithium battery cover plate is achieved by matching the inward concave notches arranged on the circumferential surface of the negative rivet with the protrusions inside the negative insulation pad, and arranging the flanges on the cover plate mounting seat into a saw-toothed shape, so that the saw-toothed flanges can be clamped into the step surface on the inner wall of the negative insulation pad to achieve the torsion of the lithium battery cover plate, and the integral structural strength and the structural connection firmness of the battery cover plate are improved; because the internal and external connection only does not have the accessory assembly combination through negative pole rivet and formula of sinking negative pole mount pad inner wall in this scheme, consequently, does not have the unstable problem of internal resistance, directly guarantees the internal resistance uniformity of lithium cell cover board through material itself to can indirectly reduce the charge-discharge temperature value that generates heat of lithium cell cover board.
The technical contents and features of the present invention have been disclosed as above, but those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the embodiments shown, but includes various alternatives and modifications without departing from the present invention, and is covered by the claims.
Claims (10)
1. The utility model provides a can improve lithium cell cover plate structure of capacity which characterized in that: it includes insulating pad, cover down the apron, the setting of insulating upper surface of pad are in down negative pole subassembly and the positive pole subassembly of apron upper surface, on the apron corresponding to negative pole subassembly position is provided with sunken negative pole mount pad, sunken negative pole mount pad bottom is formed with the support base of negative pole subassembly, just the base middle part is provided with the through-hole, sunken negative pole mount pad upper portion is inwards turned over and is formed with sawtooth turn-ups will the negative pole subassembly compresses tightly to be fixed on the apron.
2. The lithium battery cover plate structure capable of increasing capacity of claim 1, wherein: still include the explosion-proof membrane of embedded setting between insulating pad and apron down.
3. The lithium battery cover plate structure capable of increasing capacity of claim 1, wherein: the negative pole subassembly is including setting up sealing washer in the formula of sinking negative pole mount pad, being located negative pole rivet on the sealing washer, will the sealing washer with negative pole rivet is fixed to be compressed tightly negative pole insulating pad in the formula of sinking negative pole mount pad.
4. The lithium battery cover plate structure capable of increasing capacity of claim 3, wherein: the cathode rivet is characterized in that a plurality of concave notches are formed in the circumferential surface of the cathode rivet, and bulges clamped into the concave notches are arranged on the surface of the inner cavity of the cathode insulating pad.
5. The lithium battery cover plate structure capable of increasing capacity of claim 3, wherein: the upper surface of the negative electrode rivet is provided with a step surface pressed by the upper part of the negative electrode insulating pad.
6. The lithium battery cover plate structure capable of increasing capacity of claim 3, wherein: the negative pole insulating pad comprises an inner shell, an outer shell and an annular clamping groove formed by the inner shell and the outer shell in a surrounding mode, and the sawtooth flanging portion of the sinking type negative pole mounting seat is inserted into the annular clamping groove to fix the negative pole insulating pad.
7. The lithium battery cover plate structure capable of increasing capacity of claim 3, wherein: the negative pole insulating pad is of a circular ring cover body structure, and the upper surface of the negative pole rivet extends out of the upper surface of the negative pole insulating pad.
8. The lithium battery cover plate structure capable of increasing capacity of claim 5, wherein: the negative electrode insulating pad compresses the negative electrode rivet by pressing the step surface, wraps the periphery of the sunken negative electrode mounting seat, and compresses and obtains rotation stopping torque force through the sawtooth flanging part.
9. The lithium battery cover plate structure capable of improving capacity of claim 2, wherein: the lower insulating pad is provided with a profiling accommodating groove corresponding to the position of the explosion-proof membrane, and the explosion-proof membrane is arranged in the profiling accommodating groove.
10. The lithium battery cover plate structure capable of increasing capacity of claim 9, wherein: the cover plate is provided with a profiling opening corresponding to the position of the explosion-proof membrane, and the profiling opening is provided with a surface sticker covered by the explosion-proof membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169754.4U CN210224110U (en) | 2019-07-24 | 2019-07-24 | Lithium battery cover plate structure capable of improving capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169754.4U CN210224110U (en) | 2019-07-24 | 2019-07-24 | Lithium battery cover plate structure capable of improving capacity |
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| CN210224110U true CN210224110U (en) | 2020-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335980A (en) * | 2019-07-24 | 2019-10-15 | 苏州炬鸿通讯电脑科技有限公司 | A kind of cover board structure of lithium battery that can improve capacity |
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2019
- 2019-07-24 CN CN201921169754.4U patent/CN210224110U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335980A (en) * | 2019-07-24 | 2019-10-15 | 苏州炬鸿通讯电脑科技有限公司 | A kind of cover board structure of lithium battery that can improve capacity |
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