CN222355238U - Battery shell, battery and electric equipment - Google Patents
Battery shell, battery and electric equipment Download PDFInfo
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- CN222355238U CN222355238U CN202323443951.XU CN202323443951U CN222355238U CN 222355238 U CN222355238 U CN 222355238U CN 202323443951 U CN202323443951 U CN 202323443951U CN 222355238 U CN222355238 U CN 222355238U
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- battery
- injection hole
- shell
- liquid injection
- side wall
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- 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
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
本公开涉及一种电池外壳、电池及用电设备，其中的电池外壳包括壳体和盖板，壳体具有开口，盖板盖设于开口，壳体的侧壁设置有注液孔，其中，壳体的侧壁至少在对应于注液孔的位置设置有加强结构，用以加强注液孔的强度。通过上述技术方案，在受到电芯循环过程中产生的膨胀应力时，由于加强结构对注液孔形成的固定保护，使得注液孔不容易发生形变，从而确保注液孔的密封性能，有利于避免电池漏液的风险，提升电池使用的安全性能。
The present disclosure relates to a battery casing, a battery and an electrical device, wherein the battery casing comprises a shell and a cover plate, the shell has an opening, the cover plate is arranged on the opening, and the side wall of the shell is provided with a liquid injection hole, wherein the side wall of the shell is provided with a reinforcing structure at least at a position corresponding to the liquid injection hole, so as to strengthen the strength of the liquid injection hole. Through the above technical scheme, when subjected to the expansion stress generated during the battery cell cycle, the liquid injection hole is not easily deformed due to the fixed protection formed by the reinforcing structure on the liquid injection hole, thereby ensuring the sealing performance of the liquid injection hole, which is conducive to avoiding the risk of battery leakage and improving the safety performance of battery use.
Description
Technical Field
The disclosure relates to the technical field of new energy, in particular to a battery shell, a battery and electric equipment.
Background
The electrolyte injection hole of the battery electrolyte, the pole and the explosion-proof valve are usually arranged on the cover plate of the shell together. Due to the reasons of limited working height of the liquid injection equipment, in some related technologies, the liquid injection hole is arranged on the side wall of the shell, the shell is usually made of thinner aluminum materials, the strength of the shell is poor compared with that of the cover plate, in the cell cycle, along with the continuous expansion of the cell, the side edge of the aluminum shell generates pulling stress, the position of the liquid injection hole is easily deformed, the sealing performance is further poor, the risk of liquid leakage is caused, and the use safety performance of the battery is affected.
Disclosure of utility model
In order to overcome the problems in the related art, the present disclosure provides a battery housing, a battery, and an electrical device.
According to a first aspect of embodiments of the present disclosure, there is provided a battery case, including a housing and a cover plate, the housing has an opening, the cover plate covers the opening, a liquid injection hole is provided on a side wall of the housing, wherein a reinforcing structure is provided on the side wall of the housing at least at a position corresponding to the liquid injection hole, so as to reinforce the strength of the liquid injection hole.
Optionally, a plurality of liquid injection holes are formed, and a plurality of liquid injection holes are formed on the same side wall of the shell.
Optionally, the battery case further comprises a flexible sealing nail for being inserted into the liquid injection hole to seal the liquid injection hole, and a sealing cover for sealing the outer side of the liquid injection hole.
Optionally, the shell comprises two first side walls oppositely arranged in a first direction and two second side walls oppositely arranged in a second direction, wherein the area of the first side walls is smaller than that of the second side walls, and the liquid injection hole is formed in the first side walls.
Optionally, the sealing cover is configured not to protrude from an outer surface of the sidewall.
Optionally, the reinforcing structure is a reinforcing plate attached to the inner wall surface of the shell, the reinforcing plate is provided with a via hole, and the position of the via hole is aligned with the position of the liquid injection hole.
Optionally, the cover plate and the reinforcing plate are of unitary construction.
Optionally, a boss is disposed on a side of the cover plate facing the inside of the housing, the outer periphery of the cover plate extends laterally beyond the boss, and an outer side wall surface of the boss is adapted to be attached to an inner wall surface of the housing, wherein the reinforcing plate is formed by extending a side edge of the boss away from the cover plate.
Optionally, the reinforcing structure is a wall thickness reinforcement formed by increasing a wall thickness of the housing sidewall.
According to a second aspect of embodiments of the present disclosure, there is provided a battery including a battery case and a pole piece accommodated in the battery case, the battery case being any one of the battery cases described above.
According to a third aspect of embodiments of the present disclosure, there is provided an electrical device, including the battery described above.
The battery shell provided by the embodiment of the disclosure has the beneficial effects that the side wall of the shell is provided with the reinforcing structure at least corresponding to the position of the liquid injection hole, so that the strength of the liquid injection hole is enhanced, when the battery shell is subjected to expansion stress generated in the battery core circulation process, the liquid injection hole is not easy to deform due to the fixed protection of the reinforcing structure on the liquid injection hole, the sealing performance of the liquid injection hole is ensured, the risk of battery liquid leakage is avoided, and the use safety performance of the battery is improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a schematic view of a battery case according to an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic structural view of another battery case provided in an exemplary embodiment of the present disclosure.
Fig. 3 is a top view of a battery housing provided in an exemplary embodiment of the present disclosure.
Fig. 4 is a schematic view of a cover plate provided in an exemplary embodiment of the present disclosure.
Fig. 5 is a schematic view of a battery provided in an exemplary embodiment of the present disclosure.
Description of the reference numerals
1-Shell, 11-opening, 12-liquid injection hole, 13-first side wall, 14-second side wall, 2-cover plate, 21-boss, 3-reinforcing structure, 31-reinforcing plate, 311-via hole, 41-flexible sealing nail, 42-sealing cover, 51-positive pole post, 52-negative pole post, 6-explosion-proof valve and 7-pole core.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
Unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and "inner" are used herein to define the directions indicated by the corresponding drawings, and "inner" and "outer" are intended to refer to the inner and outer sides of the outline of the corresponding component itself. Furthermore, the terms "first," "second," and the like, herein used in order to distinguish one element from another element, without sequence or importance.
As shown in fig. 1 to 4, the present disclosure exemplarily provides a battery case for accommodating a pole core 7 and an electrolyte. The battery shell comprises a shell body 1 and a cover plate 2, wherein the shell body 1 is provided with an opening 11, the cover plate 2 is covered on the opening, the side wall of the shell body 1 is provided with a liquid injection hole 12, and the side wall of the shell body 1 is provided with a reinforcing structure at least at the position corresponding to the liquid injection hole 12 for reinforcing the strength of the liquid injection hole 12. The case 1 may be constructed to have the opening 11 at one end or to have the opening 11 at both ends, mainly depending on whether the positive electrode tab 51 and the negative electrode tab 52 are provided at the same end of the battery. For example, in some batteries, the positive electrode tab 51 and the negative electrode tab 52 are provided at both ends of the battery, respectively, so that it is necessary to provide the case 1 with the openings 11 at both ends in order to mount the cap plates 2, respectively. For the assembly of the battery, it is common to first put the electrode core 7 into the case 1, then cover the cover plate 2 to the opening 11 and close the opening 11, and finally perform the operation of injecting the electrolyte through the injection hole 12.
The battery case 1 provided by the present disclosure is provided with the liquid filling hole 12 in the side wall of the case 1, which is mainly different from the related art in which the liquid filling hole 12 is provided on the cover plate 2. Whereas the related art provides the pour hole 12 on the cover plate 2 mainly considering that the cover plate 2 has a thicker wall thickness so as to provide sufficient strength to avoid deformation of the pour hole 12. However, as the battery length increases, for example, the more efficient blade battery length may reach 90cm, which is limited by the operational height of the priming device.
This disclosure sets up annotating liquid hole 12 at the lateral wall of casing 1, can realize annotating the in-process of liquid with battery case level place on annotating the liquid station, thereby receive annotating liquid equipment working height influence less, compared with the mode of annotating liquid is placed to the vertical mode of placing simultaneously, pole piece 7 receives gravity influence not much when battery level is placed, thereby also less to the pulling stress of casing 1 lateral wall, this at least can the furthest reduce annotate the risk that liquid hole 12 takes place to warp at annotating the liquid stage.
On this basis, the present disclosure provides the reinforcing structure 3 at a position of the side wall of the housing 1 corresponding to at least the liquid injection hole 12, where the reinforcing structure 3 may, for example, use an additionally provided reinforcing member, or make the side wall of the housing 1 locally or entirely thickened, or use a reinforcing rib or the like to strengthen the strength of the liquid injection hole 12, which will be described in more detail later, and will not be described herein. And through setting up the intensity that reinforcing structure 3 was used for strengthening annotating liquid hole 12, when receiving the expansion stress that the electric core circulation in-process produced like this, because the fixed protection that reinforcing structure formed annotating liquid hole 12 for annotate liquid hole 12 is difficult to take place deformation, thereby ensure annotating the sealing performance in liquid hole, be favorable to avoiding the risk of battery weeping, promote the security performance that the battery used.
The battery shell provided by the embodiment of the disclosure has the beneficial effects that the reinforcing structure 3 is arranged on the side wall of the shell 1 at least corresponding to the position of the liquid injection hole 12 and used for reinforcing the strength of the liquid injection hole 12, so that when the battery is subjected to expansion stress generated in the battery cell circulation process, the liquid injection hole 12 is not easy to deform due to the fixed protection of the reinforcing structure on the liquid injection hole 12, the sealing performance of the liquid injection hole 12 is ensured, the risk of battery leakage is avoided, and the safety performance of battery use is improved.
In some embodiments, as shown in fig. 3, the injection hole 12 may be provided in plurality, and the plurality of injection holes 12 are provided on the same side wall of the housing 1. Taking the case that both ends of the case 1 have openings 11 as an example, that is, the case 1 is provided with cover plates 2 at both ends of the opening 11, respectively, to draw out the positive electrode and the negative electrode, respectively, wherein fig. 1 shows that a positive electrode post 51 is provided on the cover plate 2, and fig. 2 shows that a negative electrode post 52 and an explosion-proof valve 6 are provided on the cover plate 2. In fig. 1 to 3, the liquid injection hole 12 may be provided at a position close to the cover plate 2, but the liquid injection hole 12 may be provided at any position between both ends of the side wall of the housing according to actual needs.
Through setting up a plurality of notes liquid hole 12, for example, show as being provided with two notes liquid hole 12 in fig. 3, two notes liquid hole 12 all set up the embodiment on the same lateral wall of casing 1 simultaneously, this makes annotate liquid equipment and can accomplish annotating liquid operation in one side of casing 1, and need not to dispose annotate liquid equipment in another side of casing 1 or annotate liquid operation of the other side of upset shell after annotating liquid in one side, be favorable to improving the efficiency of annotating liquid to reduce the duration that electrolyte soaks, make the infiltration more abundant.
After the pouring operation is completed, in order to seal the pouring hole, as shown in fig. 1 and 2, the battery case may further include a flexible sealing nail 41 for insertion into the pouring hole 12 to seal the pouring hole 12 and a sealing cover 42 for sealing the outside of the pouring hole 12. The flexible sealing nail 41 may be, for example, a sealing nail made of rubber, and is sealed in the liquid injection hole 12 by flexible deformation to avoid liquid leakage, and the sealing cover 42 is usually covered on the outer side of the liquid injection hole 12 in a welded manner, and cooperates with the flexible sealing nail 41 to enhance the sealing effect, and can avoid dust from falling into the liquid injection hole 12. Alternatively, the sealing cover 42 may be configured not to protrude from the outer surface of the side wall, which can ensure flatness of the side wall and more beautiful appearance by employing the flat-mouthed sealing cover 42 or increasing the depth of the filling hole 12 as long as mounting interference with the flexible sealing nail 41 does not occur.
Further, as shown in fig. 1 to 3, the housing 1 includes two first side walls 13 disposed opposite in the first direction and two second side walls 14 disposed opposite in the second direction, wherein the area of the first side walls 13 is smaller than the area of the second side walls 14, and the liquid injection hole 12 is disposed on the first side walls 13. Taking a square cell as an example, the first side wall 13 is the narrow top or bottom surface of the cell, while the second side wall 13 is the large surface of the cell, which is also the surface against which the cells rest when stacked in groups. The present disclosure provides the liquid filling hole 12 on the first sidewall 13, mainly to avoid influencing the stacking of the batteries, and save the stacking space.
As an embodiment for realizing the reinforcing structure 3, the reinforcing structure 3 is a reinforcing plate 31 which is abutted against the inner wall surface of the housing 1, and the reinforcing plate 31 is provided with a through hole 311, and the position of the through hole 311 is aligned with the position of the liquid injection hole 12. Here, the alignment of the through hole 311 and the pouring hole 12 means that the centers of the two are coincident, so as to ensure that the sealing elements such as the flexible sealing nail 41 can penetrate in sequence. The reinforcing plate 31 not only can play a role in reinforcing the strength of the liquid injection hole 12, but also is equivalent to increasing the wall thickness of the shell 1 at the position of the liquid injection hole 12, so that a heat dissipation belt is formed in the battery, namely, heat generated in the battery can be conducted outwards through the increased reinforcing plate 31, heat dissipation of the battery core is facilitated, and the safety performance of the battery is improved on the premise that the energy density is not affected. In order not to affect the energy density of the battery and to consider the lightweight design of the battery, the thickness of the reinforcing plate 31 is slightly larger than the wall thickness of the case 1, for example, the case thickness of aluminum is usually 0.3mm to 0.5mm, and the total thickness is preferably not more than 1mm after the reinforcing plate 31 is added.
The cover plate 2 and the reinforcing plate 31 may be configured in a unitary construction, for example, the cover plate 2 shown in fig. 4 in an L-shape. Specifically, the reinforcing plate 31 may be regarded as a part of the cover plate 2, which may be achieved by integrally injection-molding the reinforcing plate 31 at the time of manufacturing the cover plate 2. Of course, the reinforcing plate 31 may be integrally formed with the cover plate 2 by welding or the like in addition to the conventional flat plate-like cover plate. And make apron 2 and reinforcing plate 31 structure as an organic whole, can reduce the purpose of waiting to install spare part, just can realize the installation of reinforcing plate 31 when installing apron 2, be favorable to promoting the efficiency of installation. The length of the reinforcing plate 31 may slightly exceed the position of the liquid injection hole 12, for example, 3mm to 5mm, and the position of the liquid injection hole 12 may be practically as long as it does not interfere with the top spacer. While a reinforcing plate 31 having a short length serves to enhance the strength without excessively increasing the weight of the battery.
Further, a boss 21 is disposed on a side of the cover plate 2 facing the interior of the housing 1, the outer periphery of the cover plate 2 extends beyond the boss 21 along a lateral direction, and an outer side wall surface of the boss 21 is adapted to be abutted against an inner wall surface of the housing 1, wherein the reinforcing plate 31 is formed by extending a side edge of the boss 21 away from the cover plate 2. Wherein, the outer side wall surface of boss 21 is suitable for leaning on the inner wall surface of casing 1, plays the effect of installation direction to can improve the installation effectiveness of apron 2, and the outer periphery of apron 2 extends to surpass boss 21 along the side direction, so that be formed with the overlap joint face between apron 2 and boss 21, this overlap joint face is used for overlapping at the tip border of casing, then can weld apron 2 on casing 1. Since the reinforcing plate 31 is integrally formed by extending the side edge of the boss 21 away from the cover plate 2, the outer side wall surface of the boss 21 is adapted to abut against the inner wall surface of the housing 1, and thus the extending reinforcing plate 31 is positioned so as to abut against the inner wall surface of the housing 1.
In addition to the embodiment provided above in which the reinforcing plate 31 is additionally provided as the reinforcing structure 3, in other embodiments, the reinforcing structure 3 may be a wall thickness reinforcing portion formed by increasing the wall thickness of the side wall of the housing 1. The wall thickness reinforcement may be, for example, a local thickening of the position of the injection hole 12 or a whole side wall thickening, wherein the whole side wall thickening is simpler in manufacturing process, and the local thickening is realized, for example, by injection molding, so that adverse effects on the whole weight of the battery are reduced while the structural strength is realized. In addition, a plurality of reinforcing ribs may be molded around the liquid injection hole 12 at intervals on the inner wall of the housing 1, which also has the function of reinforcing the structural strength of the liquid injection hole 12.
According to a second aspect of the embodiments of the present disclosure, as shown in fig. 5, there is further provided a battery, including a battery case and a pole core 7 accommodated in the battery case, where the battery case is a battery case in any one of the foregoing embodiments, and has all the advantages thereof, which are not described herein.
According to a third aspect of embodiments of the present disclosure, there is also provided an electrical consumer, for example, a pure electric vehicle, comprising the battery described above.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323443951.XU CN222355238U (en) | 2023-12-15 | 2023-12-15 | Battery shell, battery and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323443951.XU CN222355238U (en) | 2023-12-15 | 2023-12-15 | Battery shell, battery and electric equipment |
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| Publication Number | Publication Date |
|---|---|
| CN222355238U true CN222355238U (en) | 2025-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202323443951.XU Active CN222355238U (en) | 2023-12-15 | 2023-12-15 | Battery shell, battery and electric equipment |
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| CN (1) | CN222355238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120089914A (en) * | 2025-04-29 | 2025-06-03 | 蜂巢能源科技股份有限公司 | Battery case and battery |
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2023
- 2023-12-15 CN CN202323443951.XU patent/CN222355238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120089914A (en) * | 2025-04-29 | 2025-06-03 | 蜂巢能源科技股份有限公司 | Battery case and battery |
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