CN220086205U - Non-cover plate battery case - Google Patents
Non-cover plate battery case Download PDFInfo
- Publication number
- CN220086205U CN220086205U CN202321689952.XU CN202321689952U CN220086205U CN 220086205 U CN220086205 U CN 220086205U CN 202321689952 U CN202321689952 U CN 202321689952U CN 220086205 U CN220086205 U CN 220086205U
- Authority
- CN
- China
- Prior art keywords
- battery case
- post
- hole
- utmost point
- battery
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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 provides a no apron battery case, including battery case, sealing plate and utmost point post, battery case one end is the opening form, sealing plate installs the open end at battery case, and need not laser welding, can accomplish the connection with battery case, make the inside influence of avoiding external environment of battery case, like moisture, dust and other pollutants, can help prolonging the life-span of battery, be equipped with the utmost point post hole on battery case simultaneously, and install the utmost point post in the utmost point post hole, realize that the utmost point post passes through the utmost point post hole and install in battery case, and need not laser welding, and guaranteed the normal operating of utmost point post, be connected through foretell sealing plate and battery case, the utmost point post is connected with the utmost point post hole, can effectually reduce the harm that laser welding caused the battery, and then improve the life of battery.
Description
Technical Field
The utility model belongs to the field of battery structural parts, and particularly relates to a battery case without a cover plate.
Background
At present, the structure of the lithium ion battery shell mainly comprises a cover plate and two major parts of the battery shell. The cover plate is a combination body requiring scattered structural members and mainly comprises a pole column, a sealing assembly, a lower plastic part, a liquid injection hole, an explosion-proof valve and a metal plate, wherein the manufacturing process of the battery comprises ultrasonic welding of a battery core and a connecting sheet, pole column laser welding of the connecting sheet and a top cover, and laser welding of the cover plate and a battery shell.
The patent CN202122418642.1 discloses a power battery without cover plate structure, the device is characterized in that the positive electrode collector plate is welded on the positive electrode membrane of the shell by laser, the negative electrode collector plate is welded on the negative electrode membrane by laser, the connection of the positive electrode and the negative electrode is completed, the installation of the power battery without cover plate is completed by installing a sealing plate below the shell, the device has simple structure and is convenient for processing operation, but the connection of the positive electrode plate and the negative electrode plate with the shell still needs the problem of laser welding, and the connection between the shell and the sealing plate can be affected by installing the sealing plate below the shell.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide the battery case without the cover plate, which is convenient for connecting the cover plate with the case and connecting the pole with the case, can replace laser welding and prolongs the service life of the battery.
The utility model provides a no apron battery case, includes battery case, sealing plate and utmost point post, battery case one end opening, sealing plate installs the open end at battery case, be equipped with the utmost point post hole on the battery case, the utmost point post hole is connected with the utmost point post.
As a preferred embodiment of the present utility model, the number of the post holes is at least two, and the post holes include a positive post hole for mounting a positive post and a negative post hole for mounting a negative post.
As a preferred embodiment of the present utility model, the positive electrode post holes and the negative electrode post holes are distributed on the same side of the battery case.
As a preferable scheme of the utility model, the positive pole hole and the negative pole hole are respectively distributed on two opposite sides of the battery shell.
As a preferred aspect of the present utility model, the negative electrode post hole includes a first negative electrode post hole and a second negative electrode post hole, and the first negative electrode post hole and the second negative electrode post hole are disposed on the same plane.
As a preferred embodiment of the present utility model, the positive electrode post includes a positive electrode post and a negative electrode post, the positive electrode post is installed in the positive electrode post hole, and the negative electrode post is installed in the negative electrode post hole.
As a preferable scheme of the utility model, the pole hole is provided with a sealing ring, and the sealing ring is connected with the pole.
In a preferred embodiment of the present utility model, the battery case is made of the same material as the sealing plate.
As a preferable mode of the present utility model, the thickness of the battery case is identical to the thickness of the sealing plate.
As a preferable scheme of the utility model, the sealing cover is provided with a liquid injection hole and an explosion-proof valve.
According to the utility model, the sealing plate is directly arranged on the shell, and the polar column is arranged in the polar column hole on the shell, so that laser welding between the sealing plate and the shell and between the polar column and the shell is avoided, and the service life of the battery can be prolonged.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Fig. 2 is a pole bore ipsilateral profile.
Fig. 3 is a pole mounting schematic.
Fig. 4 is a pole schematic.
Fig. 5 is a graph showing different profiles of the pole bore.
Reference numerals: the battery case 1, the post hole 11, the positive post hole 111, the negative post hole 112, the first negative post hole 112-1, the second negative post hole 112-2, the seal ring 113, the sealing plate 2, the liquid injection hole 21, the explosion-proof valve 22, the post 3, the positive post 31, and the negative post 32.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be arbitrarily combined with each other.
The utility model is further described below with reference to the accompanying drawings.
Embodiment one:
the utility model provides a no apron battery case, including battery case 1, sealing plate 2 and utmost point post 3, as shown in fig. 1, 4, battery case 1 one end is the opening form, sealing plate 2 installs the open end at battery case 1, and need not laser welding, can accomplish the connection with battery case 1, make the inside influence of avoiding external environment of battery case 1, like moisture, dust and other pollutants, can help prolonging the life-span of battery, be equipped with utmost point post hole 11 on battery case 1 simultaneously, and install utmost point post 3 in utmost point post hole 11, realize utmost point post 3 and install in battery case 1 through utmost point post hole 11, and need not laser welding, and ensured the normal operating of utmost point post 3, be connected through foretell sealing plate 2 and battery case 1, utmost point post 3 and utmost point post hole 11, can effectually reduce the harm that laser welding caused the battery, and then improve the life of battery.
As shown in fig. 3, the electrode post 3 includes an anode post 31 and a cathode post 32, and the anode post 31 and the cathode post 32 are respectively installed in different electrode post holes 11, i.e., one electrode post hole 11 can only install one electrode post 3, and there should be a space between the electrode post holes 11, if there is no proper isolation between the anode post 31 and the cathode post 32, current may flow directly from the anode post 31 to the cathode post 32, resulting in overheating, damage, and even safety problems of the battery.
The above-mentioned pole 3 includes positive pole 31 and negative pole 32, therefore the quantity of pole hole 11 is two at least, as shown in fig. 1, namely is used for installing positive pole hole 111 of positive pole 31 and is used for installing the negative pole hole 112 of negative pole 32, through installing positive pole 31 and negative pole 32 respectively in different pole holes 11, can reduce the risk of battery short circuit, and pole hole 11 provides mechanical support through fixing positive pole 31, negative pole 32 on battery housing 1, has increased the stability of battery.
In order to facilitate the assembly and disassembly of the positive electrode column 31 and the negative electrode column 32, the positive electrode column holes 111 and the negative electrode column holes 112 are distributed on the battery case 1 on the same side, so that the design and manufacturing process of the battery can be simplified, the production efficiency can be improved, and the manufacturing cost can be reduced.
As shown in fig. 2, the anode hole 112 includes a first anode hole 112-1 and a second anode hole 112-2, the first anode hole 112-1 and the second anode hole 112-2 are arranged on the same plane, in most batteries, current flows from the positive electrode to the negative electrode, and the anode hole 112 is placed on the same side and can be connected with the negative electrode inside the battery more easily, so that the normal passage of the current is ensured.
In order to make the connection between the pole 3 and the pole hole 11 tighter, as shown in fig. 3, a sealing ring 113 is disposed at the connection position between the pole 3 and the pole hole 11, where the sealing ring 113 can effectively prevent fluid or gas from leaking from the contact surface between the pole hole 11 and the pole 3, and can ensure that the medium in the system cannot leak, thereby maintaining the stability and normal operation of the system.
The material of the battery shell 1 is the same as that of the sealing plate 2, the joint between the battery shell 1 and the sealing plate 2 is the key for ensuring the tightness and the safety of the battery, the material compatibility between the battery shell 1 and the sealing plate 2 can be ensured by using the same material, the mismatching and unreliable joint between materials are reduced, and the production and the assembly process can be simplified by using the battery shell 1 and the sealing plate 2 with the same material, the complexity and the cost of the production process are reduced, and the production efficiency is improved.
The thickness of the battery case 1 is consistent with that of the sealing plate 2, the joint between the battery case 1 and the sealing plate 2 needs to bear the stress from the internal battery chemical reaction and the external environment, if the thicknesses of the battery case 1 and the sealing plate 2 are inconsistent, uneven stress distribution can be caused, the risk of stress concentration and rupture at the joint can be increased, more uniform stress distribution can be realized by making the thicknesses of the battery case 1 and the sealing plate 2 consistent, and the reliability and the sealing performance of the joint can be improved.
As shown in fig. 1, the sealing plate 2 is provided with an explosion-proof valve 22 formed by continuous stamping through a die, so that the function of effective explosion can be achieved, and a liquid injection hole 21 is further provided, the state of electrolyte can be conveniently checked and maintained through the liquid injection hole 21, the electrolyte injection hole 21 also enables replacement of the electrolyte in the battery to be possible, the service life of the battery is prolonged, the internal pressure can be safely discharged when the battery is maintained or replaced due to the existence of the explosion-proof valve 22, and the performance, the safety and the maintainability of the battery can be improved due to the arrangement of the liquid injection hole 21 and the explosion-proof valve 22 on the sealing plate 2.
Embodiment two:
compared with embodiment 1, the positions of the positive electrode post holes 111 and the negative electrode post holes 112 are adjusted, as shown in fig. 5, the positive electrode post holes 111 and the negative electrode post holes 112 are respectively distributed on two opposite sides of the battery case 1, so that electrical isolation between the positive electrode post 31 and the negative electrode post 32 can be realized, which is helpful for preventing short circuit between the positive electrode post 31 and the negative electrode post 32, reducing current abnormality and other safety risks, and improving the safety and stability of the battery.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the terms corresponding to the reference numerals in the drawings are used more herein, the possibility of using other terms is not excluded; these terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (10)
1. The utility model provides a no apron battery case, its characterized in that includes battery case (1), sealing plate (2) and utmost point post (3), battery case (1) one end opening, sealing plate (2) are installed at the open end of battery case (1), be equipped with utmost point post hole (11) on battery case (1), utmost point post hole (11) are connected with utmost point post (3).
2. A capless battery case according to claim 1, wherein the number of the post holes (11) is at least two, and the post holes (11) include a positive post hole (111) and a negative post hole (112).
3. A capless battery case according to claim 2, characterized in that the positive and negative post holes (111, 112) are distributed on the same side of the battery case (1).
4. A capless battery case according to claim 2, wherein the positive and negative electrode post holes (111, 112) are distributed on opposite sides of the battery case (1), respectively.
5. The capless battery case of claim 2, wherein the negative electrode stem hole (112) comprises a first negative electrode stem hole (112-1) and a second negative electrode stem hole (112-2), the first negative electrode stem hole (112-1) and the second negative electrode stem hole (112-2) being disposed on the same plane.
6. A capless battery case as claimed in claim 2, wherein the post (3) comprises a positive post (31) and a negative post (32), the positive post (31) being mounted in a positive post hole (111) and the negative post (32) being mounted in a negative post hole (112).
7. A capless battery case as claimed in claim 1, wherein the post hole (11) is provided with a sealing ring (113), the sealing ring (113) being connected to the post (3).
8. The capless battery case of claim 1, wherein the battery case (1) is the same material as the sealing plate (2).
9. A capless battery case as claimed in claim 1, wherein the thickness of the battery case (1) corresponds to the thickness of the sealing plate (2).
10. The battery case without the cover plate according to claim 1, wherein the sealing plate (2) is provided with a liquid injection hole (21) and an explosion-proof valve (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321689952.XU CN220086205U (en) | 2023-06-30 | 2023-06-30 | Non-cover plate battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321689952.XU CN220086205U (en) | 2023-06-30 | 2023-06-30 | Non-cover plate battery case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220086205U true CN220086205U (en) | 2023-11-24 |
Family
ID=88825460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321689952.XU Active CN220086205U (en) | 2023-06-30 | 2023-06-30 | Non-cover plate battery case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220086205U (en) |
-
2023
- 2023-06-30 CN CN202321689952.XU patent/CN220086205U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |