CN218334024U - Excessive current cover plate - Google Patents
Excessive current cover plate Download PDFInfo
- Publication number
- CN218334024U CN218334024U CN202222496464.9U CN202222496464U CN218334024U CN 218334024 U CN218334024 U CN 218334024U CN 202222496464 U CN202222496464 U CN 202222496464U CN 218334024 U CN218334024 U CN 218334024U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- base plate
- utmost point
- pole
- ring
- 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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- 238000007789 sealing Methods 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 abstract description 17
- 239000000758 substrate Substances 0.000 description 15
- 238000003825 pressing Methods 0.000 description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007774 positive electrode material Substances 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a too high electric current apron relates to power battery apron technical field. The utility model discloses a base plate, base plate upper surface middle part is provided with the explosion-proof valve, the base plate upper surface is provided with annotates the liquid hole, the equal fixedly connected with rubber ring in base plate upper surface both sides, fixedly connected with utmost point post in the rubber ring, utmost point post is the rotator, utmost point post runs through the electrode connection of base plate and lower surface and power battery electricity core, fixedly connected with insulation board between base plate and the utmost point post side, fixedly connected with steel ring on the insulation board, steel ring upper surface and utmost point post fixed connection, insulation board and the equal fixed connection of steel ring are inside the rubber ring, fixedly connected with sealing washer between base plate lower surface and the utmost point post. The utility model discloses a direct connection of utmost point post and the electrode of electric core has improved the overcurrent efficiency of utmost point post, has increased the cross sectional area of utmost point post welding group battery, has reduced the resistance of utmost point post, has strengthened the overcurrent ability of utmost point post.
Description
Technical Field
The utility model belongs to the technical field of power battery apron, particularly, in particular to too high current apron.
Background
Nowadays, the world is in shortage of petroleum resources, in order to seek a new energy mode, the lithium battery is widely concerned in the traffic field due to the characteristics of high energy storage, no emission and the like, along with the increasing maturity and perfection of the electric automobile technology, the performance of a vehicle-mounted power battery becomes a key point which directly influences the overall performance of the electric automobile, and a power battery cover plate is closely related to the performance of the power battery.
Power battery forms the group battery after need being established ties and parallelly connected combination and supplies the motor vehicle to use, is called battery pack to power battery's encapsulation process, and the combination of battery relies on the welding of utmost point post on each battery cover plate, and figure 4 is the utmost point post and the clamp plate of current power battery cover plate base plate department, and the weak point that it exists lies in: for improving the welding firmness, the existing battery cover plate is provided with a pressing plate at the side edge of a pole, the area of a welding surface is increased through the pressing plate, the pole connected with a battery cell is limited by the width of a substrate and is smaller, and the smaller sectional area leads to the small over-current capacity of the existing cover plate.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above technical problem, an object of the present invention is to provide an over-current cover plate.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a too high current apron, includes the base plate, base plate upper surface middle part is provided with explosion-proof valve, the base plate upper surface is provided with annotates the liquid hole, the equal fixedly connected with rubber ring in base plate upper surface both sides, fixedly connected with utmost point post in the rubber ring, utmost point post is the rotator, utmost point post runs through the electrode connection of base plate and lower surface and power battery electricity core, the base plate with fixedly connected with insulation board between the utmost point post side, insulation board upper surface fixedly connected with steel ring, steel ring upper surface with utmost point post fixed connection, the insulation board with the equal fixed connection of steel ring in inside the rubber ring, the base plate lower surface with fixedly connected with sealing washer between the utmost point post.
As a further aspect of the present invention: the vertical cross section of the insulating plate is L-shaped, one side of the insulating plate, which is close to the pole, is fixedly connected with the pole, the lower part of the insulating plate, which is far away from one side of the pole, is fixedly connected with the substrate, and the upper part of the insulating plate, which is far away from one side of the pole, is fixedly connected with the inner side surface of the rubber ring.
As a further aspect of the present invention: the inner side of the steel ring is fixedly connected with the side face of the upper part of the pole, the outer side of the steel ring is fixedly connected with the inner side of the rubber ring, the side face of the pole is provided with a reinforcing ring on the upper surface of the steel ring, and the upper surface of the reinforcing ring is fixedly connected with the side face of the upper part of the rubber ring.
As a further aspect of the present invention: the base plate lower surface is close to utmost point post lower part side department is provided with the ring notch, sealing washer fixed connection in the ring notch, utmost point post lower surface is provided with the connection piece, the sealing washer is close to one side of utmost point post with utmost point post fixed connection, the sealing washer is kept away from one side of utmost point post with base plate fixed connection.
As a further aspect of the present invention: the vertical cross section of the sealing ring is L-shaped, and the sealing ring is limited between the upper surface of the connecting piece and the ring groove opening.
As a further aspect of the present invention: the diameter length of the connecting sheet is larger than that of the upper surface of the pole, and the diameter length of the connecting sheet is 65-75% of the width of the substrate.
As a further aspect of the present invention: the upper surface of the pole is higher than the upper surface of the sealing ring, and the lower surface of the pole is lower than the lower surface of the sealing ring.
The utility model has the advantages that:
1. the insulating plate and the sealing ring with the L-shaped vertical cross section are arranged, so that the base plate is prevented from contacting with the pole while fixing the pole, and the safety of the power battery in the case of overhigh current is improved;
2. through the direct connection of the pole and the electrode of the power battery cell, the overcurrent efficiency of the pole is improved, the cross-sectional area of the pole welding battery pack is increased, the resistance of the pole is reduced, and the overcurrent capacity of the pole is enhanced.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 isbase:Sub>A partial cross-sectional view taken atbase:Sub>A-base:Sub>A of fig. 2 in accordance with the present invention;
fig. 4 is a schematic structural diagram of an electrode post on a conventional cover plate.
In the figure: 1. a substrate; 2. an explosion-proof valve; 3. a liquid injection hole; 4. a rubber ring; 5. a pole column; 501. a reinforcing ring; 502. connecting sheets; 6. an insulating plate; 7. steel ring; 8. an annular notch; 9. a seal ring; 10. an electrode column; 11. and (7) pressing a plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 4, the surface of the substrate 1 of the existing power battery cover plate is fixedly connected with a pressing plate 11, the inside of the pressing plate 11 is fixedly connected with an electrode column 10, the electrode column 10 is connected with the electrode of a power battery cell, when the battery is started, the power supply of the cell is transmitted to the electrode column 10, because the cross section area of the electrode column 10 is small, the welding contact area is small, the connection strength after the series-parallel connection assembly of the power lithium battery is directly carried out is not enough, the welding area is improved through the pressing plate 11, the welding strength is improved, the pressing plate 11 carries out the secondary overcurrent on the overcurrent of the electrode column 10, and finally the battery pack is connected.
As shown in fig. 1, an over-high current cover plate comprises a base plate 1, an explosion-proof valve 2 is arranged in the middle of the base plate 1, the base plate 1 is a cover plate main body for sealing and covering a power lithium battery cell, the explosion-proof valve 2 is used for breaking a valve body of the explosion-proof valve 2 when the internal pressure of a battery exceeds a threshold value, releasing the internal pressure to avoid the battery from bursting, an explosion-proof film arranged on the explosion-proof valve 2 can break and release the pressure when the pressure exceeds the threshold value, a liquid injection hole 3 is arranged on the upper surface of the base plate 1 in a penetrating manner, the liquid injection hole 3 is a via hole for injecting electrolyte into the battery, after the electrolyte is injected, the liquid injection hole 3 needs to be sealed by a sealing sleeve, and the power lithium battery cell comprises electrolyte, positive and negative electrode materials and a diaphragm for sealing and storing the electrolyte.
As shown in fig. 1 to 3, rubber rings 4 are fixedly connected to both sides of the upper surface of a substrate 1, two rubber rings 4 are fixedly connected to poles 5, the poles 5 penetrate through the substrate 1, it is to be noted that the poles 5 and electrode posts 10 have the same function and are both electrodes connected to battery cells, the rubber rings 4 are used for fixing and sealing the poles 5, the poles 5 are rotating bodies, an insulating plate 6 is fixedly connected between the substrate 1 and the side surfaces of the poles 5, the vertical section of the insulating plate 6 is L-shaped, the lower part of the insulating plate is fixedly connected between the substrate 1 and the poles 5, the lower surface of the upper part of the insulating plate is connected to the upper surface of the substrate 1, the side surfaces of the upper part of the insulating plate 6 are fixedly connected to the inner side surfaces of the rubber rings 4, the insulating plate 6 supports the middle position of the poles 5 through an L-shaped structure, prevents the poles 5 from contacting the substrate 1, and improves the safety when the current is too large; fixed surface is connected with steel ring 7 on the insulation board 6, the inboard 5 upper portion side fixed connection of steel ring and utmost point post of 7, the inboard 7 outside of steel ring and the inboard fixed connection of rubber ring 4, utmost point post 5 side is provided with reinforcing ring 501 in steel ring 7 upper surface, reinforcing ring 501 upper surface and the 4 upper portion medial surface fixed connection of rubber ring, reinforcing ring 501 is used for the increase and rubber ring 4's connection area, improve utmost point post 5 and rubber ring 4's joint strength, cooperation base plate 1 is spacing to steel ring 7 and insulation board 6 between being in reinforcing ring 501 lower surface and base plate 1 upper surface simultaneously, improve the bulk strength that utmost point post 5 and base plate 1 are connected.
As shown in fig. 3, a connecting sheet 502 is arranged on the lower surface of the pole 5, a ring groove opening 8 is arranged on the lower surface of the substrate 1 at the side surface of the lower part of the pole 5, a sealing ring 9 is arranged inside the ring groove opening 8, the vertical section of the sealing ring 9 is L-shaped, the upper surface of the sealing ring 9 is fixedly connected with the upper surface of the ring groove opening 8, the inner side of the sealing ring 9 close to the pole 5 is connected with the side surface of the pole 5, one side of the sealing ring 9 far away from the pole 5 is connected with the lower surface of the substrate 1, the sealing ring 9 is used for sealing a lithium battery cell and placing leakage of internal electrolyte, and meanwhile, the sealing ring 9 is matched with the insulating plate 6 to isolate the pole 5 from the substrate 1, so as to further improve the safety of the power battery when the large current flows; the connecting sheet 502 is used for being connected with an electrode of a lithium battery cell, the connecting sheets 502 of the two polar columns 5 are respectively connected with a positive electrode and a negative electrode in the cell, the diameter of the connecting sheet 502 is larger than the diameter of the upper surface of the polar columns 5, the diameter length of the connecting sheet 502 is 70% of the width of the substrate 1, the formula R = rho L/S (R is resistance, rho is resistivity, L is material length, and S is conductor sectional area) is defined by resistance, when the material length is fixed, the resistance of the conductor is inversely proportional to the sectional area of the conductor, so when the sectional area of the conductor is large, the overcurrent capacity is stronger, the sectional area of the connecting sheet 502 is larger than the sectional area of the existing electrode column 10 (see fig. 4), so that the overcurrent capacity is stronger, high current can be passed, a battery pack with stronger overcurrent capacity can be installed in a battery compartment of a fixed space, a stronger power source can be provided, an auxiliary effect is provided for improving the performance of the electric vehicle, in addition, the overcurrent of the polar columns 5 is directly connected into the battery pack through welding, the overcurrent efficiency is stronger than that a traditional cover plate 11 is passed through the pressing plate, the secondary overcurrent of the pressing plate 11, the battery pack can be directly welded with the pressing plate, and the battery can be directly welded with the battery pack, and the pressing plate 11, and the battery can be directly welded conveniently and the battery pack can be packaged after the battery pack, and the battery pack can be conveniently and the battery pack can be packaged, and the battery pack can be conveniently carried out.
As shown in fig. 2 and 3, the upper surface of the pole 5 is higher than the upper surface of the rubber ring 4, so that the interference of the rubber ring 4 is eliminated, the welding is tighter, meanwhile, the upper surfaces of the poles 5 are all welding surfaces, the electrode pole 10 and the pressure plate 11 are in a separated state, the welding surfaces are not integrated, the sealing performance during welding is lower, and the welding strength is limited; the lower surface of the pole 5 is lower than the lower surface of the sealing ring 9, so that the connection between the pole 5 and a battery cell electrode is facilitated, the sealing ring 9 is prevented from being in direct contact with the electrode, the overcurrent safety is improved, and preferably, the upper surface of the pole 5 is provided with a welding liquid port which is used for receiving redundant molten welding liquid during welding.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. The utility model provides an excessive current apron, includes base plate (1), base plate (1) upper surface middle part is provided with explosion-proof valve (2), base plate (1) upper surface is provided with annotates liquid hole (3), its characterized in that: the utility model discloses a power battery, including base plate (1), base plate (1) upper surface both sides equal fixedly connected with rubber ring (4), fixedly connected with utmost point post (5) in rubber ring (4), utmost point post (5) are the rotator, utmost point post (5) run through base plate (1) and lower surface are connected with the electrode of power battery electricity core, base plate (1) with fixedly connected with insulation board (6) between utmost point post (5) the side, insulation board (6) upper surface fixedly connected with steel ring (7), steel ring (7) upper surface with utmost point post (5) fixed connection, insulation board (6) with equal fixed connection in steel ring (7) inside rubber ring (4), base plate (1) lower surface with fixedly connected with sealing washer (9) between utmost point post (5).
2. The over-high current cover plate according to claim 1, wherein the vertical cross section of the insulating plate (6) is L-shaped, one side of the insulating plate (6) close to the pole (5) is fixedly connected with the pole (5), the lower part of the insulating plate (6) far away from one side of the pole (5) is fixedly connected with the base plate (1), and the upper part of the insulating plate (6) far away from one side of the pole (5) is fixedly connected with the inner side surface of the rubber ring (4).
3. The cover plate for the over-high current according to claim 1, wherein the inner side of the steel ring (7) is fixedly connected with the upper side of the pole (5), the outer side of the steel ring (7) is fixedly connected with the inner side of the rubber ring (4), the side of the pole (5) is provided with a reinforcing ring (501) on the upper surface of the steel ring (7), and the upper surface of the reinforcing ring (501) is fixedly connected with the upper side of the rubber ring (4).
4. The cover plate for the over-high current according to claim 1, wherein a ring notch (8) is formed in the lower surface of the base plate (1) close to the side face of the lower portion of the pole (5), the sealing ring (9) is fixedly connected in the ring notch (8), a connecting piece (502) is arranged on the lower surface of the pole (5), one side, close to the pole (5), of the sealing ring (9) is fixedly connected with the pole (5), and one side, far away from the pole (5), of the sealing ring (9) is fixedly connected with the base plate (1).
5. An excess current cover plate according to claim 4, characterized in that the sealing ring (9) is L-shaped in vertical section, the sealing ring (9) being confined between the upper surface of the connecting piece (502) and the ring groove opening (8).
6. An excessive-current cover plate according to claim 4, characterized in that the diameter length of the connecting piece (502) is larger than that of the upper surface of the pole (5), and the diameter length of the connecting piece (502) is 65-75% of the width of the base plate (1).
7. The cover plate for excessive current according to claim 1, wherein the upper surface of the pole (5) is higher than the upper surface of the rubber ring (4), and the lower surface of the pole (5) is lower than the lower surface of the sealing ring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496464.9U CN218334024U (en) | 2022-09-20 | 2022-09-20 | Excessive current cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496464.9U CN218334024U (en) | 2022-09-20 | 2022-09-20 | Excessive current cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218334024U true CN218334024U (en) | 2023-01-17 |
Family
ID=84838059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222496464.9U Active CN218334024U (en) | 2022-09-20 | 2022-09-20 | Excessive current cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218334024U (en) |
-
2022
- 2022-09-20 CN CN202222496464.9U patent/CN218334024U/en active Active
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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 type of high current cover plate Effective date of registration: 20230524 Granted publication date: 20230117 Pledgee: Jiujiang Bank Co.,Ltd. Hefei Dangtu Road sub branch Pledgor: HEFEI LIXIANG CELL TECHNOLOGY CO.,LTD. Registration number: Y2023980041537 |
|
| 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: 20230117 Pledgee: Jiujiang Bank Co.,Ltd. Hefei Dangtu Road sub branch Pledgor: HEFEI LIXIANG CELL TECHNOLOGY CO.,LTD. Registration number: Y2023980041537 |
|
| 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 type of high current cover plate Granted publication date: 20230117 Pledgee: Jiujiang Bank Co.,Ltd. Hefei Dangtu Road sub branch Pledgor: HEFEI LIXIANG CELL TECHNOLOGY CO.,LTD. Registration number: Y2024980024520 |