CN114583344A - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
- Publication number
- CN114583344A CN114583344A CN202210236664.2A CN202210236664A CN114583344A CN 114583344 A CN114583344 A CN 114583344A CN 202210236664 A CN202210236664 A CN 202210236664A CN 114583344 A CN114583344 A CN 114583344A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- battery cover
- battery
- main body
- plate main
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000001746 injection moulding Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 32
- 238000000465 moulding Methods 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract description 3
- 239000003792 electrolyte Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides a battery cover plate and a battery, and relates to the technical field of new energy, wherein the battery cover plate comprises a battery cover plate main body, the battery cover plate main body is an injection molding cover plate, and a pole column used for being connected with a pole piece is arranged on the battery cover plate main body; and a liquid injection hole and an explosion-proof valve are arranged on the battery cover plate. The battery cover plate main body of the battery cover plate is formed by nano injection molding, and is made of plastics, so that the battery cover plate main body is insulated; compare in the battery apron main part of aluminium system, can no longer set up plastic and lower plastic etc. reduce the cost of battery apron, improve market competition.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a battery cover plate and a battery.
Background
With the development of electric vehicles and the promotion of policies, the demand of the market for batteries is increasing. In recent years, each battery factory continuously expands the production, meets the market demand and occupies the market. The power battery occupies most of the cost of the electric automobile, and with the increase of the demand, the cost of the battery is more and more emphasized by enterprises, and the cost reduction is continuously carried out.
The battery cover plate generally comprises a battery cover plate main body, wherein the battery cover plate main body is provided with an upper plastic, a lower plastic, a pole column, a riveting block and the like, the structure is relatively complex, and the cost is higher.
Disclosure of Invention
The invention aims to provide a battery cover plate to solve the technical problems that the cost of the battery cover plate is high and the market competitiveness is influenced.
In a first aspect, the invention provides a battery cover plate, which comprises a battery cover plate main body, wherein the battery cover plate main body is an injection molding cover plate, and a pole post used for being connected with a pole piece is arranged on the battery cover plate main body.
In an optional embodiment, the battery cover plate main body is provided with two poles, wherein the two poles are respectively a positive pole and a negative pole; and a liquid injection hole and an explosion-proof valve are arranged on the battery cover plate.
In an optional embodiment, the explosion-proof valve and the pole are placed in an injection molding cavity of the battery cover plate main body and are fixedly connected with the battery cover plate main body in the injection molding process of the battery cover plate main body.
In an alternative embodiment, an inner groove is arranged at the upper end of the battery cover plate main body, and the liquid injection hole is arranged in the inner groove;
the lower end of the battery cover plate main body is provided with an annular bulge, and the annular bulge and the liquid injection hole are concentrically arranged.
In an alternative embodiment, the annular protrusion is provided with a diversion trench.
In an optional embodiment, a sealing nail is arranged on the liquid injection hole, the sealing nail comprises a sealing part and a fixing part, and the sealing part is arranged at the lower end of the fixing part; the sealing part is arranged in the liquid injection hole, and the fixing part is hot-melted in the inner groove.
In an alternative embodiment, the battery cover main body is provided with a protrusion at the lower end of both ends in the length direction.
In an optional embodiment, the upper end and the lower end of the pole protrude from the battery cover plate main body.
The battery cover plate main body of the battery cover plate provided by the invention is formed by nano injection molding, and the material of the battery cover plate main body is plastic, so that the battery cover plate main body is insulated; compare in the battery apron main part of aluminium system, can no longer set up plastic and lower plastic etc. reduce the cost of battery apron, improved market competition.
In a second aspect, the present invention provides a battery comprising the battery cover plate according to any one of the preceding embodiments.
In an optional embodiment, the battery further comprises a battery case, and the material of the battery case is plastic.
The invention also provides a battery, which adopts the battery cover plate, thereby having all the beneficial effects of the battery cover plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a battery cover plate according to an embodiment of the present invention;
FIG. 2 is a schematic view of another angle of the battery cover plate shown in FIG. 1;
fig. 3 is a partially enlarged view of a of the battery cover plate shown in fig. 2;
FIG. 4 is a diagram illustrating a state where the sealing nails of the battery cover plate are not hot-melted according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a state in which the sealing nail of the battery cover plate is hot-melted according to an embodiment of the present invention.
Icon: 100-a battery cover plate body; 200-pole; 300-an explosion-proof valve; 400-inner grooves; 500-liquid injection hole; 600-a boss; 700-an annular projection; 800-diversion trench; 900-sealing nails; 901-a fixed part; 902-sealing.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a battery cover plate, which includes a battery cover plate main body 100, wherein the battery cover plate main body 100 is an injection molded cover plate, and a pole 200 for connecting with a pole piece is disposed on the battery cover plate main body 100.
In some embodiments, the battery cover plate main body 100 is formed by injection molding, the material of the battery cover plate main body 100 is plastic, and the plastic battery cover plate main body 100 has insulation property; compared with the battery cover plate main body 100 in the prior art, the upper plastic, the lower plastic, the sealing ring and the like can be omitted; this can reduce the quality of the entire battery cover main body 100, and improve market competitiveness.
In an alternative embodiment, two poles 200 are disposed on the battery cover plate body 100, and the two poles 200 are a positive pole and a negative pole respectively; and the battery cover plate is provided with a liquid injection hole 500 and an explosion-proof valve 300.
Two poles 200 are arranged on the battery cover plate main body 100, and the positions of the two poles 200 relative to the battery cover plate main body 100 are similar to the positions of the poles 200 in the prior art on the battery cover plate main body 100; two poles 200 are provided, one is the anode pole 200, and the other is the cathode pole 200; the positive pole post 200 is connected with the positive plate of the battery core, the negative pole post 200 is connected with the negative plate of the battery core, and because the battery cover plate main body 100 can be insulated, the pole post 200 does not need to be provided with parts similar to an insulating sleeve, a cover plate patch and the like which are isolated from the battery cover plate main body 100, so that the structure of the battery cover plate main body 100 is simpler.
In an optional embodiment, the explosion-proof valve 300 and the terminal 200 are placed in an injection molding cavity of the battery cover plate main body 100, and are fixedly connected with the battery cover plate main body 100 in the injection molding process of the battery cover plate main body 100, so that the cost caused by an explosion-proof sheet, an explosion-proof sheet protective film and assembly welding is saved, and the risk caused by welding is reduced.
The post 200, the explosion-proof valve 300 and the like are placed in the injection molding cavity in advance, and in the injection molding process of the battery cover plate main body 100, the post 200 and the explosion-proof valve 300 are fixed on the battery cover plate main body 100, so that the connection firmness of the post 200 and the explosion-proof valve 300 on the battery cover plate main body 100 is enhanced.
Referring to fig. 3, in an alternative embodiment, an inner groove 400 is provided at the upper end of the battery cover plate main body 100, and the liquid injection hole 500 is provided in the inner groove 400;
an annular protrusion 700 is disposed at the lower end of the battery cover main body 100, and the annular protrusion 700 is concentrically disposed with the injection hole 500.
In an alternative embodiment, the annular protrusion 700 is provided with a flow guide groove 800.
In an alternative embodiment, a sealing nail 900 is arranged on the liquid injection hole 500, the sealing nail 900 comprises a sealing part 902 and a fixing part 901, and the sealing part 902 is arranged at the lower end of the fixing part 901; the sealing part 902 is provided in the pour hole 500, and the fixing part 901 is thermally fused in the inner recess 400.
In some embodiments, the electrolyte injection hole 500 is formed in the battery cover plate main body 100, and the sealing nail 900 is capable of better sealing the electrolyte injection hole 500 after the electrolyte injection is completed, and the battery cover plate main body 100 is provided with an inner groove 400, wherein the inner groove 400 is generally circular, and the inner groove 400 is concentrically arranged with the electrolyte injection hole 500; the sealing portion 902 of the sealing nail 900 is inserted into the pour hole 500, and the sealing portion 902 can seal the pour hole 500.
Referring to fig. 4 and 5, the fixing portion 901 is fixed in the inner groove 400 by a hot melting method, the sealing nail 900 is also made of plastic, and the fixing portion 901 of the sealing nail 900 is connected to the battery cover main body 100 after hot melting, so that the sealing nail 900 is firmly fixed to the battery cover main body 100.
Compared with the prior art, the aluminum sealing aluminum nail is welded on the battery cover plate main body 100, so that laser welding is omitted, welding slag and metal chips are avoided, and structural members are also saved.
Thus, the sealing nail 900 is fixed to the battery cover main body 100 more firmly, and the sealing nail 900 better seals the injection hole 500, ensuring that the electrolyte does not leak from the injection hole 500.
After the inner groove 400 is formed in the battery cover main body 100, the thickness of the battery cover main body 100 having the inner groove 400 is reduced, and in order to ensure the strength of the battery cover main body 100 at the inner groove 400, the battery cover main body 100 is provided with the annular protrusion 700, and the annular protrusion 700 and the inner groove 400 are respectively located at the upper side and the lower side of the battery cover main body 100; the annular protrusion 700 increases the strength of the battery cover main body 100 when the center of the annular protrusion 700 coincides with the circular shape of the pour hole 500.
In order to ensure that foreign matters block the liquid injection hole 500 to influence the vacuumizing effect in the vacuumizing process through the liquid injection hole 500 before the electrolyte is injected, the annular bulge 700 is provided with a flow guide groove 800; for example, after the insulating glue on the tab is blocked and injected into the liquid hole 500, the guide groove 800 of the annular protrusion 700 can be used for vacuumizing, so that the problem that the vacuumizing effect cannot be mastered due to the blockage of foreign matters and the quality of the battery is influenced is avoided.
In an alternative embodiment, the battery cover main body 100 is provided with a protrusion 600 at the lower end of both ends in the longitudinal direction.
In an alternative embodiment, the upper and lower ends of the terminal post 200 protrude from the battery cover main body 100.
A convex part 600 is arranged in the length direction of the battery cover plate main body 100, and the connecting direction of the two poles 200 is generally the same as the length direction of the battery cover plate main body 100; the lower end of the protrusion 600 on the battery cover main body 100 acts on the battery cell, and the protrusion 600 functions to support the battery cover main body 100.
The battery cover plate main body 100 of the battery cover plate provided by the invention is formed by nano injection molding, and the material of the battery cover plate main body 100 is plastic, so that the battery cover plate main body 100 is insulated; compare in the battery apron main part 100 of aluminium system, can no longer set up plastic and, down plastic and sealing washer etc. have reduced battery apron's cost, have improved market competition.
The invention provides a battery, which comprises the battery cover plate in any one of the previous embodiments.
In an optional embodiment, the battery further comprises a battery shell, and the material of the battery shell is plastic.
The battery shell and the battery cover plate of the battery are made of the same materials and are made of plastics, and the battery is not provided with an aluminum shell, so that the possibility of accidental short circuit is reduced, and the safety of a battery module formed by the battery is improved.
The invention also provides a battery, which adopts the battery cover plate, thereby having all the beneficial effects of the battery cover plate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a battery cover plate, its characterized in that includes battery cover plate main part (100), battery cover plate main part (100) are the apron of moulding plastics be provided with utmost point post (200) that are used for being connected with the pole piece on battery cover plate main part (100).
2. The battery cover plate according to claim 1, wherein the battery cover plate main body (100) is provided with two poles (200), and the two poles (200) are a positive pole and a negative pole respectively; and a liquid injection hole (500) and an explosion-proof valve (300) are arranged on the battery cover plate.
3. The battery cover plate according to claim 2, characterized in that the explosion-proof valve (300) and the pole (200) are placed in an injection molding cavity of the battery cover plate main body (100) and are fixedly connected with the battery cover plate main body (100) during the injection molding of the battery cover plate main body (100).
4. The battery cover plate according to claim 3, wherein an inner groove (400) is provided at the upper end of the battery cover plate main body (100), and the liquid injection hole (500) is provided in the inner groove (400);
an annular bulge (700) is arranged at the lower end of the battery cover plate main body (100), and the annular bulge (700) and the liquid injection hole (500) are concentrically arranged.
5. The battery cover plate according to claim 4, wherein the annular protrusion (700) is provided with a flow guide groove (800).
6. The battery cover plate according to claim 4, wherein a sealing nail (900) is arranged on the liquid injection hole (500), the sealing nail (900) comprises a sealing part (902) and a fixing part (901), and the sealing part (902) is arranged at the lower end of the fixing part (901); the sealing part (902) is arranged in the liquid injection hole (500), and the fixing part (901) is hot-melted in the inner groove (400).
7. The battery cap plate according to claim 6, wherein the lower ends of both ends in the length direction of the battery cap plate main body (100) are provided with protrusions (600).
8. The battery cover plate according to claim 1, wherein the upper and lower ends of the terminal (200) protrude from the battery cover plate body (100).
9. A battery comprising the battery cover plate according to any one of claims 1 to 8.
10. The battery of claim 9, further comprising a battery housing, wherein the battery housing is made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210236664.2A CN114583344A (en) | 2022-03-11 | 2022-03-11 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210236664.2A CN114583344A (en) | 2022-03-11 | 2022-03-11 | Battery cover plate and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114583344A true CN114583344A (en) | 2022-06-03 |
Family
ID=81781048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210236664.2A Pending CN114583344A (en) | 2022-03-11 | 2022-03-11 | Battery cover plate and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114583344A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198136A1 (en) * | 2016-05-16 | 2017-11-23 | 宁德时代新能源科技股份有限公司 | Top cover of secondary battery |
| CN109411645A (en) * | 2018-05-22 | 2019-03-01 | 宁波聚特普新材料有限公司 | A kind of power battery top cover with nanometer injection molding pole |
| CN109860450A (en) * | 2019-03-27 | 2019-06-07 | 东莞天予天正新能源科技有限公司 | A kind of power battery top cover and its assembly method and power battery |
| CN210040271U (en) * | 2018-11-23 | 2020-02-07 | 芜湖天弋能源科技有限公司 | Clamping groove power battery top cover |
| CN111969177A (en) * | 2020-09-21 | 2020-11-20 | 厦门海辰新能源科技有限公司 | Pole post assembly integrated with liquid injection hole, battery top cover and liquid injection method |
| CN215731932U (en) * | 2021-07-28 | 2022-02-01 | 蜂巢能源科技有限公司 | Power battery and injection molding top cover structure thereof |
-
2022
- 2022-03-11 CN CN202210236664.2A patent/CN114583344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198136A1 (en) * | 2016-05-16 | 2017-11-23 | 宁德时代新能源科技股份有限公司 | Top cover of secondary battery |
| CN109411645A (en) * | 2018-05-22 | 2019-03-01 | 宁波聚特普新材料有限公司 | A kind of power battery top cover with nanometer injection molding pole |
| CN210040271U (en) * | 2018-11-23 | 2020-02-07 | 芜湖天弋能源科技有限公司 | Clamping groove power battery top cover |
| CN109860450A (en) * | 2019-03-27 | 2019-06-07 | 东莞天予天正新能源科技有限公司 | A kind of power battery top cover and its assembly method and power battery |
| CN111969177A (en) * | 2020-09-21 | 2020-11-20 | 厦门海辰新能源科技有限公司 | Pole post assembly integrated with liquid injection hole, battery top cover and liquid injection method |
| CN215731932U (en) * | 2021-07-28 | 2022-02-01 | 蜂巢能源科技有限公司 | Power battery and injection molding top cover structure thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109755421A (en) | Button cell and button cell closing lid method | |
| CN210837817U (en) | Power battery top cover, adapter piece and power battery | |
| CN110993839A (en) | Power battery top cover and power battery applying same | |
| CN218677502U (en) | Welding structure of power battery pole | |
| CN114335828A (en) | Battery, electric automobile and preparation method of battery | |
| CN113131054A (en) | Power battery utmost point post packaging structure, top cap, power battery | |
| CN211629141U (en) | Battery cover plate structure | |
| CN114583344A (en) | Battery cover plate and battery | |
| CN219534694U (en) | Cover plate and lithium battery | |
| CN219626864U (en) | Top cap subassembly and battery | |
| CN110212147B (en) | Lug type top cover structure | |
| CN114447413B (en) | Battery cover plate and battery | |
| CN218385463U (en) | Split injection molding riveting structure of battery top cover and battery top cover | |
| CN218070150U (en) | Insulating part, end cover assembly, battery pack and electric equipment of battery | |
| CN217009500U (en) | Battery with a battery cell | |
| CN110828720A (en) | Battery cover plate | |
| CN216054918U (en) | Battery cover plate assembly and battery | |
| CN114649614A (en) | Pole and battery cover plate | |
| CN211858694U (en) | High leakproofness automobile power battery apron | |
| CN114639863A (en) | Cylindrical battery and method for manufacturing the same | |
| CN216980713U (en) | Battery cell and battery module | |
| CN111769219A (en) | Novel lithium battery cover plate and lithium battery | |
| CN220914532U (en) | Sealing structure for battery liquid injection hole, cover plate assembly for battery and battery | |
| CN110233212A (en) | Needle-type battery | |
| CN211320140U (en) | Stable and reliable power battery top cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |