CN211208493U - Square power lithium battery cover plate structure with high power safety - Google Patents
Square power lithium battery cover plate structure with high power safety Download PDFInfo
- Publication number
- CN211208493U CN211208493U CN201922345017.1U CN201922345017U CN211208493U CN 211208493 U CN211208493 U CN 211208493U CN 201922345017 U CN201922345017 U CN 201922345017U CN 211208493 U CN211208493 U CN 211208493U
- Authority
- CN
- China
- Prior art keywords
- anode
- rivet
- cathode
- insulation board
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The utility model discloses a high-power security's square power lithium battery cover plate structure, including positive connection piece, negative pole connection piece, anodal rivet, negative pole rivet, anodal locking frame, negative pole locking frame, base plate, anodal insulation board, negative pole insulation board, anodal clamp plate and negative pole clamp plate. The utility model improves the energy density of the single battery cell, saves the space occupied by the battery box body in the process of assembling the battery pack module, saves the welding process compared with the traditional process for welding the explosion-proof cover, improves the quality, reduces the manufacturing procedures and saves the production cost; the stopping frame can effectively prevent the deformation of the stopping frame caused by heat generated during high-power charging and discharging, and the phenomena of liquid leakage and short circuit are caused; the insulation board sinking groove is additionally arranged on the base plate, the possibility that the torque of the insulation board of the small-size battery cell is too small is avoided, the sinking groove is additionally arranged on the stopping frame, and the boss is matched with the sinking groove, so that the structure is more stable.
Description
Technical Field
The utility model relates to a battery apron technical field especially relates to a high-power security square power lithium battery cover plate structure.
Background
When the automobile is started, the power supply needs high-power discharge to achieve the ignition function, and then the battery is needed to support the high-power discharge. The discharge rate of the lithium battery is generally indicated by a letter 'C', 1C indicates that the maximum discharge current of the battery is 1 time of discharge, generally, the 1C-discharged lithium battery is referred to as a standard battery, 2C-10C-discharged lithium battery is a low-rate battery, and more than 10C-discharged lithium battery is a high-rate battery. Due to the overcurrent capacity and safety performance of the structural part of the traditional battery, the conventional battery is mostly a standard battery or a low-rate battery. The high-rate battery almost belongs to the blank of a vehicle-mounted power lithium battery. The main reason is because the cover plate and the shell are welded and sealed to form the battery. The reliability and safety of the power battery are a technical difficulty and a key point in the manufacturing process of the power battery. And the sealability of the battery is an important factor affecting the safety and reliability of the battery. The positive and negative pole pieces of the traditional cover plate are not enough in overcurrent capacity due to structural restriction, and are often fused when high-power discharge is borne, so that the battery is disabled.
The power lithium ion battery is widely applied to products such as new energy automobiles, energy storage equipment and the like, the lithium ion battery comprises a shell, a winding core and a cover plate, wherein the winding core comprises a positive plate, a diaphragm and a negative plate, the positive plate and the negative plate are isolated by the diaphragm, positive plate foil and negative plate foil materials extend out from two sides of the winding core, the winding core is welded between positive and negative L type connecting plates and then arranged in the shell, and the cover plate is welded and sealed to form the battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a square power lithium battery cover plate structure that high-power security is high in order to compensate prior art's defect exactly.
The utility model discloses a realize through following technical scheme:
a square power lithium battery cover plate structure with high power safety comprises an anode connecting plate, a cathode connecting plate, an anode rivet, a cathode rivet, an anode stopping frame, a cathode stopping frame, a base plate, an anode insulating plate, a cathode insulating plate, an anode pressing plate and a cathode pressing plate, wherein the anode rivet sequentially penetrates rivet holes in the anode stopping frame, the base plate and the anode insulating plate, the upper end of the anode rivet is riveted with the anode pressing plate, the cathode rivet sequentially penetrates rivet holes in the cathode stopping frame, the base plate and the cathode insulating plate, the upper end of the cathode rivet is riveted with the cathode pressing plate, the anode connecting plate and the cathode connecting plate are respectively welded at the lower ends of the anode rivet and the cathode rivet, insulating plate sinking grooves are respectively formed in the two ends of the base plate, the anode insulating plate and the cathode insulating plate are respectively located in the two insulating plate sinking grooves, bosses are respectively arranged at the corresponding insulating plate sinking grooves below the base, the positive electrode stopping frame and the negative electrode stopping frame are respectively provided with a stopping frame sinking groove corresponding to the lug boss, the depth of the stopping frame sinking groove is equal to the height of the lug boss, the base plate is provided with an explosion-proof hole, an explosion-proof sheet is welded in the explosion-proof hole, and the upper end of the explosion-proof hole is adhered with a combined adhesive film. The combined film is a combination of a PET transparent sheet and a back adhesive. The explosion-proof film is a part which is attached to an opening part of an explosion-proof hole and plays a role of preventing external foreign matters or liquid from invading the explosion-proof film, and the color is transparent so that the integrity of the explosion-proof film can be observed.
The positive stop frame, the negative stop frame, the positive insulating plate and the negative insulating plate are all made of PPS materials.
And sealing rings are respectively arranged between the positive rivet and the positive stop frame and between the negative rivet and the negative stop frame.
The positive connecting sheet and the negative connecting sheet are L type full tabs
The base plate on be equipped with and annotate the liquid hole, insert sealed nail at annotating the downthehole, the cover slip has been pressed on sealed nail, through laser welding with sealed nail and base plate welded connection.
The utility model has the advantages that: the invention improves the energy density of the single battery cell, saves the space occupied by the battery box body in the process of assembling the battery pack, saves the welding process compared with the traditional process for welding the explosion-proof cover, improves the quality, reduces the manufacturing procedures and saves the production cost; the stopping frame can effectively prevent the deformation of the stopping frame caused by heat generated during high-power charging and discharging, and the phenomena of liquid leakage and short circuit are caused; the insulation board sink groove is added on the base plate, the possibility that the torque of the insulation board of the small-size battery cell is too small is avoided, the sink groove is added on the stop frame, and the boss is matched with the sink groove, so that the structure is more stable; the insulation board adopts the PPS material, effectively stops electric core and can lead to the possibility that the insulation board was welded when PACK welds.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a square power lithium battery cover plate structure with high power safety and high safety comprises an anode connecting plate 1, a cathode connecting plate 2, an anode rivet 3, a cathode rivet 4, an anode stop frame 5, a cathode stop frame 6, a substrate 7, an anode insulating plate 8, a cathode insulating plate 9, an anode pressing plate 10 and a cathode pressing plate 11, wherein the anode rivet 3 sequentially penetrates rivet holes on the anode stop frame 5, the substrate 7 and the anode insulating plate 8, the upper end of the anode rivet is riveted with the anode pressing plate 10, the cathode rivet 4 sequentially penetrates rivet holes on the cathode stop frame 6, the substrate 7 and the cathode insulating plate 9, the upper end of the cathode rivet is riveted with the cathode pressing plate 11, the anode connecting plate 1 and the cathode connecting plate 2 are respectively welded at the lower ends of the anode rivet 3 and the cathode rivet 4, insulating plate sinking grooves 12 are respectively formed at the two ends of the substrate 7, the anode insulating plate 8 and the cathode insulating plate 9 are respectively positioned in the two insulating plate sinking grooves 12, bosses are respectively arranged at the positions corresponding to the insulating plate sinking grooves below the base plate 7, the positive stop frame and the negative stop frame are respectively provided with a stop frame sinking groove 13 corresponding to the bosses, the depth of the stop frame sinking groove 13 is equal to the height of the bosses, the base plate 7 is provided with an explosion-proof hole 14, an explosion-proof sheet 15 is welded in the explosion-proof hole 14, and the upper end of the explosion-proof hole 14 is adhered with a combined adhesive film 16.
The positive stop frame 5, the negative stop frame 6, the positive insulating plate 8 and the negative insulating plate 9 are all made of PPS materials.
And sealing rings 17 are respectively arranged between the positive rivet 3 and the positive stop frame 5 and between the negative rivet 4 and the negative stop frame 6.
The positive connecting sheet 1 and the negative connecting sheet 2 are L type full tabs
The base plate 7 is provided with a liquid injection hole 18, a sealing nail 19 is inserted into the liquid injection hole 18, a sealing sheet 20 is pressed on the sealing nail 19, and the sealing nail and the base plate are welded and connected through laser welding.
Claims (5)
1. The utility model provides a high square power lithium battery cover plate structure of high-power security which characterized in that: the composite insulation board comprises an anode connecting sheet, a cathode connecting sheet, an anode rivet, a cathode rivet, an anode stopping frame, a cathode stopping frame, a substrate, an anode insulation board, a cathode insulation board, an anode pressing plate and a cathode pressing plate, wherein the anode rivet sequentially penetrates through rivet holes in the anode stopping frame, the substrate and the anode insulation board, the upper end of the anode rivet is riveted with the anode pressing plate, the cathode rivet sequentially penetrates through rivet holes in the cathode stopping frame, the substrate and the cathode insulation board, the upper end of the cathode rivet is riveted with the cathode pressing plate, the anode connecting sheet and the cathode connecting sheet are respectively welded at the lower ends of the anode rivet and the cathode rivet, insulation board sinking grooves are respectively formed on the two ends of the substrate, the anode insulation board and the cathode insulation board are respectively positioned in the two insulation board sinking grooves, bosses are respectively arranged at the positions corresponding to the insulation board sinking grooves below the substrate, and stopping frame sinking grooves corresponding to the bosses are respectively formed on the anode stopping, the depth of the locking frame sink groove is equal to the height of the boss, the base plate is provided with an explosion-proof hole, an explosion-proof sheet is welded in the explosion-proof hole, and the upper end of the explosion-proof hole is pasted with a combined pasting film.
2. The square power lithium battery cover plate structure with high power safety and high safety according to claim 1, is characterized in that: the positive stop frame, the negative stop frame, the positive insulating plate and the negative insulating plate are all made of PPS materials.
3. The square power lithium battery cover plate structure with high power safety and high safety according to claim 1, is characterized in that: and sealing rings are respectively arranged between the positive rivet and the positive stop frame and between the negative rivet and the negative stop frame.
4. The square power lithium battery cover plate structure with high power and safety according to claim 1, wherein the positive electrode connecting sheet and the negative electrode connecting sheet are both L type full tabs.
5. The square power lithium battery cover plate structure with high power safety and high safety according to claim 1, is characterized in that: the base plate on be equipped with and annotate the liquid hole, insert sealed nail at annotating the downthehole, the cover slip has been pressed on sealed nail, through laser welding with sealed nail and base plate welded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345017.1U CN211208493U (en) | 2019-12-24 | 2019-12-24 | Square power lithium battery cover plate structure with high power safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345017.1U CN211208493U (en) | 2019-12-24 | 2019-12-24 | Square power lithium battery cover plate structure with high power safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211208493U true CN211208493U (en) | 2020-08-07 |
Family
ID=71888345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922345017.1U Active CN211208493U (en) | 2019-12-24 | 2019-12-24 | Square power lithium battery cover plate structure with high power safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211208493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284608A (en) * | 2021-12-28 | 2022-04-05 | 苏州时运佳塑胶制品有限公司 | New energy automobile lithium cell apron |
-
2019
- 2019-12-24 CN CN201922345017.1U patent/CN211208493U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284608A (en) * | 2021-12-28 | 2022-04-05 | 苏州时运佳塑胶制品有限公司 | New energy automobile lithium cell apron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A square power lithium battery cover plate structure with high power and safety Effective date of registration: 20230524 Granted publication date: 20200807 Pledgee: Jiujiang Bank Co.,Ltd. Hefei Dangtu Road sub branch Pledgor: Anhui Lixiang Battery Technology Co.,Ltd. Registration number: Y2023980041573 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200807 Pledgee: Jiujiang Bank Co.,Ltd. Hefei Dangtu Road sub branch Pledgor: Anhui Lixiang Battery Technology Co.,Ltd. Registration number: Y2023980041573 |