CN116014316A - Battery cover plate and manufacturing method - Google Patents
Battery cover plate and manufacturing method Download PDFInfo
- Publication number
- CN116014316A CN116014316A CN202310087650.3A CN202310087650A CN116014316A CN 116014316 A CN116014316 A CN 116014316A CN 202310087650 A CN202310087650 A CN 202310087650A CN 116014316 A CN116014316 A CN 116014316A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- pole
- explosion
- plastic
- battery cover
- 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
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 invention relates to the technical field of battery cover plates, in particular to a battery cover plate and a manufacturing method thereof. The battery cover plate comprises a light cover plate, a positive pole post, a negative pole post, a sealing ring, positive pole upper plastic, negative pole upper plastic and lower plastic; the invention also comprises a manufacturing method of the battery cover plate, which comprises the following steps: s1: stamping the optical cover plate; s2: welding an explosion-proof valve; s3: assembling a sealing ring and a pole; s4: bending; s5: encapsulating and injecting the optical cover plate; s6: assembling plastic cement; s7: the explosion-proof valve sticks to the protective patch. The optical cover plate and the fixed ring are stamped into a whole, so that one-step fixed ring stamping process is reduced, and labor cost is reduced; the machine equipment is reduced, and the manufacturing cost is reduced. The lower plastic is directly fixed to the hole at the bottom of the light cover plate in a buckling mode, and the fixing mode is simple and direct and has high production efficiency. The bent fixing ring can stably fix the positive pole or the negative pole, and the fixing mode is simple and direct and has low cost.
Description
Technical Field
The invention relates to the technical field of battery cover plates, in particular to a battery cover plate and a manufacturing method thereof.
Background
Under the introduction of the rapid development of new energy automobiles in China, the electric power becomes the main trend of global automobile development, and the sales of new energy automobiles mainly comprising electric automobiles and hybrid electric automobiles will continuously rise in the next decades. The usage amount of the power battery system cover plate can be relatively increased. The power battery system (power battery PACK) is a core energy source for providing driving electric energy for the new energy automobile, and is one of the most critical parts of the new energy automobile. The power battery system mainly comprises components such as a battery module, an electrical system, a thermal management system, a shell, a BMS and the like, and the battery module, the electrical system, the thermal management system and the BMS are packaged through the shell to form a main body of the power battery system.
As disclosed in chinese patent No. CN201310731541.7, the power battery cover plate includes a substrate, a positive electrode post and a negative electrode post, two electrode post holes for passing through the positive electrode post and the negative electrode post are formed on the substrate, and the end of the positive electrode post or the negative electrode post passing through the substrate is riveted on one end of the positive electrode riveting press block or the negative electrode riveting press block respectively; the positive electrode riveting press block is provided with a positive electrode connecting bolt at the other end, and the negative electrode riveting press block is provided with a negative electrode connecting bolt at the other end. The cover plate of the Chinese patent No. 201310731541.7 has a relatively complex structure and a relatively complex process flow.
In addition, in the prior art, a fixing ring and an optical cover plate are generally stamped separately, a pole sealing ring is placed into the fixing ring for injection molding, a positive terminal and a negative terminal which are molded by injection molding are connected with the optical cover plate through welding, and then lower plastic is arranged on the cover plate in an ultrasonic hot melting mode. The prior art has the advantages of higher labor cost and manufacturing cost and lower production efficiency.
Disclosure of Invention
Accordingly, the present invention is directed to a battery cover plate and a manufacturing method thereof, which can reduce labor cost, reduce machine equipment, reduce manufacturing cost, and improve production efficiency.
The technical scheme of the invention is as follows: the battery cover plate comprises a light cover plate, a positive pole post, a negative pole post, a sealing ring, positive pole upper plastic, negative pole upper plastic and lower plastic;
two pole holes are respectively arranged on two sides of the optical cover plate in the length direction, and a fixing ring is arranged on the periphery of the optical cover plate;
the positive pole and the negative pole are respectively inserted into the two pole holes, and are fixed with the optical cover plate through sealing rings;
the periphery of the positive pole is coated with plastic on the positive pole, and the periphery of the negative pole is coated with plastic on the negative pole;
the lower plastic is fixed at the bottom of the light cover plate.
In the present invention, as a preferred mode of the present invention, the number of the fixing rings at the periphery of the positive electrode column is 4, and the number of the fixing rings at the periphery of the negative electrode column is also 4.
In the present invention, as a preferable mode of the present invention, the fixing rings are bent toward the positive electrode column or the negative electrode column. The bending angle of the fixing ring is 90 degrees.
In the invention, the limitation that the previous round bendable square cannot be bent is broken through.
In the invention, as a preferable mode of the invention, the light cover plate is provided with an explosion-proof hole between two pole holes, and an explosion-proof valve is arranged at the explosion-proof hole. The explosion-proof valve is provided with a protection patch.
The manufacturing method of the battery cover plate comprises the following steps:
s1: stamping the optical cover plate;
s2: welding an explosion-proof valve;
s3: assembling a sealing ring and a pole;
s4: bending;
s5: encapsulating and injecting the optical cover plate;
s6: assembling plastic cement;
s7: the explosion-proof valve sticks to the protective patch.
In a preferred embodiment of the present invention, the step S1 specifically includes stamping the optical cover plate to the fixing ring integrally by using a high-static stamping die.
In a preferred mode of the present invention, the step S3 specifically includes loading the sealing ring and the pole into the fixing ring of the optical cover plate from top to bottom.
In a preferred mode of the present invention, the step S4 specifically includes bending the fixing ring by 90 degrees in the direction of the pole; in step S5, injection molding is performed on the welded optical cover plate.
In the invention, the optical cover plate and the fixed ring part are directly punched integrally through the stamping die, and then the pole sealing ring is arranged in the punched cover plate. The fixing ring is bent through the bending die, injection molding is carried out through the double-color injection molding machine, and lower plastic is arranged on the cover plate in a buckling mode.
Compared with the prior art, the beneficial effects are that: the optical cover plate and the fixed ring are stamped into a whole, so that one-step fixed ring stamping process is reduced, and labor cost is reduced; the machine equipment is reduced, and the manufacturing cost is reduced.
On the other hand, the lower plastic is directly fixed to the hole at the bottom of the light cover plate in a buckling mode, and the fixing mode is simple and direct and has high production efficiency.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a partial schematic view of the position of the positive electrode post of the present invention.
Fig. 3 is a partial schematic view of the position of the negative electrode column of the present invention.
FIG. 4 is a schematic diagram of the structure of the stamped optical cover plate and the fixing ring.
Fig. 5 is a schematic structural view of the fixing ring after bending.
FIG. 6 is a schematic diagram of the overall process flow of the present invention.
Detailed Description
In order that the objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-6, a battery cover plate comprises a light cover plate 4, a positive pole 1, a negative pole 7, a sealing ring 2, positive pole upper plastic 3, negative pole upper plastic 9 and lower plastic 8;
two pole holes 11 are respectively arranged on two sides of the optical cover plate 4 in the length direction, and a fixing ring 10 is arranged on the periphery of the optical cover plate;
the positive pole 1 and the negative pole 7 are respectively inserted into two pole holes 11, and the positive pole 1 and the negative pole 7 are fixed with the optical cover plate 4 through the sealing ring 2;
the periphery of the positive pole 1 is coated with positive pole plastic 3, and the periphery of the negative pole 7 is coated with negative pole plastic 9;
the lower plastic 8 is fixed at the bottom of the light cover plate 4.
In this embodiment, the optical cover 4 is used as a substrate, and related components such as a pole, an explosion-proof valve, etc. may be fixed on the optical cover 4. The positive electrode post 1 and the negative electrode post 7 function as electric conductors, and the positive electrode post is a member having one end directly connected to the bus bar and the other end connected to an external conductor (also referred to as a terminal in this case) or connected to one electrode of an adjacent unit cell in the battery.
The sealing ring 2 used in the power battery pack can provide consistent sealing and waterproof effects after long-time compression, and is flame-retardant.
The upper plastic 3 of the positive electrode, the upper plastic 9 of the negative electrode and the lower plastic 8 play an insulating role.
Specifically, the number of the fixing rings 10 on the periphery of the positive electrode column 1 is 4, and the number of the fixing rings 10 on the periphery of the negative electrode column 7 is also 4. The optical cover plate 4 is punched to the fixing ring 10 by adopting a high-static punching die, and after punching, as shown in fig. 4, it can be clearly seen that the fixing ring 10 is of a sheet structure perpendicular to the optical cover plate 4, the fixing ring 10 is square and surrounds the periphery of the pole hole 11, but the adjacent fixing rings 10 are disconnected, and the adjacent fixing rings 10 are disconnected, so that each fixing ring 10 can be bent.
Specifically, as shown in fig. 1 to 5, the fixing ring 10 is bent toward the positive electrode post 1 or the negative electrode post 7. The bending angle of the fixing ring 10 is 90 degrees.
In the embodiment, the limitation that the round bendable square cannot be bent in the past is broken through. The bent fixing ring 10 can stably fix the positive pole 1 or the negative pole 7, and the fixing mode is simple and direct and has low cost.
Specifically, the light cover plate 4 is positioned between the two pole holes 11 and is also provided with an explosion-proof hole 12, and an explosion-proof valve 5 is arranged at the explosion-proof hole 12. The explosion-proof valve 5 is provided with a protective patch 6.
In this embodiment, the working principle of the explosion-proof valve 5 is that when the pressure inside the battery pack case is smaller than the explosion value set by the explosion-proof valve, the gas inside the case in a state flows from the side with high pressure to the side with low pressure, the gas is discharged outwards, and when the pressure inside the case is smaller than the pressure outside the case, the gas enters the inner cavity, so that the balance of the internal pressure and the external pressure is realized. This is the normal operating state of the explosion valve 5.
When the pressure in the box body is greater than or equal to the explosion value set by the explosion-proof valve, the internal pressure pushes the internal piston body open at the moment, and the gas is directly communicated with the outside through the barrier-free channel, so that the gas is rapidly discharged, the pressure of the box body is rapidly reduced, and the explosion of the box body is prevented.
As shown in fig. 6, a method for manufacturing the battery cover plate includes the following steps:
s1: stamping the optical cover plate;
s2: welding an explosion-proof valve;
s3: assembling a sealing ring and a pole;
s4: bending;
s5: encapsulating and injecting the optical cover plate;
s6: assembling plastic cement;
s7: the explosion-proof valve sticks to the protective patch.
In a preferred embodiment of the present invention, the step S1 specifically includes stamping the optical cover plate to the fixing ring integrally by using a high-static stamping die.
In a preferred mode of the present invention, the step S3 specifically includes loading the sealing ring and the pole into the fixing ring of the optical cover plate from top to bottom.
In a preferred mode of the present invention, the step S4 specifically includes bending the fixing ring by 90 degrees in the direction of the pole; in step S5, injection molding is performed on the welded optical cover plate.
In the invention, the optical cover plate and the fixed ring part are directly punched integrally through the stamping die, and then the pole sealing ring is arranged in the punched cover plate. The fixing ring is bent through the bending die, injection molding is carried out through the double-color injection molding machine, and lower plastic is arranged on the cover plate in a buckling mode.
In this embodiment, the whole process flow is simple and rapid, as follows: punching a light cover plate, welding an explosion-proof valve, placing a sealing ring/pole column into a pole column ring of the light cover plate, placing the assembled cover plate into a bending mold for bending, placing the cover plate into a plastic mold for encapsulation injection molding, and mounting lower plastic, wherein the plastic mold is a film for the explosion-proof valve.
The invention has the following technical effects:
the optical cover plate and the fixed ring are stamped into a whole, so that one-step fixed ring stamping process is reduced, and labor cost is reduced; the machine equipment is reduced, and the manufacturing cost is reduced.
On the other hand, the lower plastic is directly fixed to the hole at the bottom of the light cover plate in a buckling mode, and the fixing mode is simple and direct and has high production efficiency.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The battery cover plate is characterized by comprising a light cover plate (4), a positive pole column (1), a negative pole column (7), a sealing ring (2), positive pole upper plastic (3), negative pole upper plastic (9) and lower plastic (8);
two pole holes (11) are respectively arranged on two sides of the optical cover plate (4) in the length direction, and a fixing ring (10) is arranged on the periphery of the optical cover plate;
the positive pole (1) and the negative pole (7) are respectively inserted into the two pole holes (11), and the positive pole (1) and the negative pole (7) are fixed with the optical cover plate (4) through the sealing ring (2);
the periphery of the positive pole (1) is coated with plastic (3) on the positive pole, and the periphery of the negative pole (7) is coated with plastic (9) on the negative pole;
the lower plastic (8) is fixed at the bottom of the light cover plate (4).
2. A battery cover according to claim 1, wherein: the number of the fixing rings (10) at the periphery of the positive pole column (1) is 4, and the number of the fixing rings (10) at the periphery of the negative pole column (7) is also 4.
3. A battery cover according to claim 2, wherein: the fixing rings (10) are bent towards the positive pole (1) or the negative pole (7).
4. A battery cover according to claim 3, wherein: the bending angle of the fixing ring (10) is 90 degrees.
5. The battery cover plate of claim 4, wherein: the light cover plate (4) is positioned between the two pole holes (11) and is also provided with an explosion-proof hole (12), and an explosion-proof valve (5) is arranged at the explosion-proof hole (12).
6. A battery cover according to claim 5, wherein: the explosion-proof valve (5) is provided with a protection patch (6).
7. A method of making a battery cover as defined in claim 6, comprising the steps of:
s1: stamping the optical cover plate;
s2: welding an explosion-proof valve;
s3: assembling a sealing ring and a pole;
s4: bending;
s5: encapsulating and injecting the optical cover plate;
s6: assembling plastic cement;
s7: the explosion-proof valve sticks to the protective patch.
8. The method of manufacturing according to claim 7, wherein: in the step S1, a high-static stamping die is adopted to stamp the optical cover plate to the fixing ring to form a whole.
9. The method of manufacturing according to claim 7, wherein: in the step S3, the sealing ring and the pole are installed in the position of the fixing ring of the optical cover plate from top to bottom.
10. The method according to claim 7, wherein in the step S4, the fixing ring is bent by 90 ° in the direction of the pole;
in step S5, injection molding is performed on the welded optical cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310087650.3A CN116014316A (en) | 2023-01-16 | 2023-01-16 | Battery cover plate and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310087650.3A CN116014316A (en) | 2023-01-16 | 2023-01-16 | Battery cover plate and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116014316A true CN116014316A (en) | 2023-04-25 |
Family
ID=86032082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310087650.3A Pending CN116014316A (en) | 2023-01-16 | 2023-01-16 | Battery cover plate and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116014316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154355A (en) * | 2023-09-13 | 2023-12-01 | 广东力宏精密科技有限公司 | Battery cover plate structure and manufacturing method thereof |
-
2023
- 2023-01-16 CN CN202310087650.3A patent/CN116014316A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154355A (en) * | 2023-09-13 | 2023-12-01 | 广东力宏精密科技有限公司 | Battery cover plate structure and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100438136C (en) | Battery pack of improved structure | |
| CN111183532B (en) | Battery pack, device including the same, and energy storage system | |
| RU2316849C1 (en) | Pcm module casting and battery incorporating it | |
| EP1842247B1 (en) | Cap assembly mold and secondary battery having the same | |
| EP2339667A1 (en) | Battery and battery module | |
| CN100426560C (en) | Battery pack and method of producing the same | |
| CN116014316A (en) | Battery cover plate and manufacturing method | |
| CN113767514A (en) | Battery module and battery pack | |
| CN113644354A (en) | Battery top cap structure, battery and electric device | |
| CN217215030U (en) | Output pole assembly, battery module and battery pack | |
| CN217934015U (en) | Notch type injection molding riveting structure of battery top cover and battery top cover | |
| EP4064431A1 (en) | Battery pack, electronic device comprising same, and vehicle | |
| CN114069118A (en) | Single battery, battery module and battery pack | |
| KR20210156240A (en) | Battery Module, Battery Pack, Vehicle, and Method For Manufacturing Battery Pack | |
| CN220172246U (en) | Single battery, battery pack and vehicle | |
| CN218867355U (en) | Battery core, battery module and battery pack | |
| CN218975601U (en) | Terminal equipment | |
| CN216720100U (en) | Single battery, battery module and battery pack | |
| KR100490629B1 (en) | Secondary battery having case made of resin | |
| CN218827490U (en) | End cover assembly of battery, battery monomer, energy storage device and consumer | |
| CN218677339U (en) | Punching-riveting injection-molding battery top cover structure | |
| CN116130852A (en) | Battery top cover, battery module, battery pack and manufacturing method of battery top cover | |
| CN220984657U (en) | Top cover assembly for battery and battery | |
| CN220672719U (en) | Battery top cover structure, battery core and battery | |
| CN212587687U (en) | Battery structure and battery module |
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 |