CN223911778U - Novel shell structure and battery pack - Google Patents

Abstract

This utility model discloses a novel housing structure and battery assembly, relating to the technical field of battery cell housing equipment. The novel housing structure includes: an outer shell; a plurality of partition plates spaced apart within the outer shell along a predetermined direction; a cover plate disposed on the upper end of the outer shell; and a plurality of electrode posts, respectively embedded in the outer shell in a predetermined order. The outer shell, the partition plates, and the cover plate together form multiple battery cell cavities, with the electrode posts arranged opposite each other on both sides of each cavity. This utility model solves the problems of traditional battery structures where the housing is formed by stamping, resulting in a simple internal cavity structure, unstable connection between the electrode posts and the housing, and requiring improvement in the welding process of the battery cell connecting pieces; and where the cover plate structure is often split, including a lower plastic component, leading to a complex pack structure, cumbersome top cover structure, low utilization of height space, high production costs, and low production efficiency.

Description

Novel shell structure and battery pack

Technical Field

The utility model relates to the technical field of battery cell shell equipment, in particular to a novel shell structure and a battery assembly.

Background

With the continuous development and popularization of electronic devices, higher requirements are put on the performance, volume, cost, production efficiency and the like of batteries.

The shell adopts stamping forming in the traditional battery structure, the internal cavity structure is single, the connection mode of the pole column and the shell is unstable, the welding process of the battery core connecting sheet is still to be improved, and the cover plate structure is in a split type and comprises lower plastic parts, so that the problems of complex pack structure, complicated top cover structure, low utilization rate of height space, high production cost and low production efficiency are caused. In view of the above-mentioned problems, no effective solution has been proposed yet.

Disclosure of utility model

The utility model aims to provide a novel shell structure and a battery assembly, which at least solve one of the problems in the prior art.

The technical scheme is that the novel shell structure comprises:

a housing;

the separation plates are arranged in the shell at intervals along a preset direction;

a cover plate arranged at the upper end of the shell, and

The pole posts are respectively embedded in the shell relatively according to a preset sequence;

The shell, the partition plates and the cover plate are enclosed to form a plurality of electric core accommodating cavities, and the two sides of each electric core accommodating cavity are respectively and oppositely provided with the pole.

Preferably, the housing, the plurality of partition plates and the cover plate are integrally injection molded.

Preferably, the shell comprises a bottom plate which is horizontally arranged, vertical plates are arranged around the peripheral edges of the bottom plate, and a plurality of partition plates are arranged between the vertical plates at intervals.

Preferably, a step is arranged at the top of the vertical plate, and limit protruding parts are arranged at the tops of the step and the plurality of partition plates.

Preferably, a plurality of limiting cavities are arranged on one side of the cover plate, close to the shell, at intervals, a plurality of spacing cavities and the peripheral outer edges of the cover plate are provided with intervals, spacing grooves are formed between the intervals and adjacent spacing cavities, and the spacing grooves are clamped with the spacing convex parts.

Preferably, an extension is provided on the housing and adjacent to the pole.

Preferably, the extending part is respectively provided with a plurality of limit grooves matched with the pole in shape, and the pole is arranged in the limit grooves.

Preferably, the pole is provided with a first welding surface and a second welding surface.

Preferably, the pole is further provided with a battery core connecting sheet.

In order to achieve the above object, according to another aspect of the present application, there is also provided a battery assembly.

The battery assembly according to the present application includes the novel case structure as described above.

The battery cell structure has the beneficial effects that in the embodiment of the application, an integrated forming mode is adopted, a plurality of battery cell accommodating cavities are formed by enclosing a shell, a plurality of partition plates and a cover plate, and the two sides of each battery cell accommodating cavity are respectively and oppositely provided with the pole columns, so that the purposes of improving the structural stability and the space utilization rate are achieved, the technical effects of simplifying the structure and improving the production efficiency are realized, the technical problems that the shell in the traditional battery structure adopts the stamping forming mode, the internal cavity structure is single, the connection mode of the pole columns and the shell is unstable, the welding process of a battery cell connecting sheet is still to be improved, and the cover plate structure is mostly split and comprises lower plastic parts, so that the pack structure is complex, the top cover structure is complex, the high space utilization rate is low, the production cost is high and the production efficiency is low are solved.

Drawings

FIG. 1 is a perspective view of a novel housing structure of the present utility model;

FIG. 2 is a perspective view of another novel housing structure of the present utility model;

FIG. 3 is a front view of the novel housing structure of the present utility model;

FIG. 4 is a schematic perspective view of the interior of the novel housing structure of the present utility model;

FIG. 5 is a front view of the interior of the novel housing structure of the present utility model;

FIG. 6 is a front view of the interior of the novel housing structure A-A of the present utility model

FIG. 7 is an enlarged partial schematic view of a novel housing structure of the present utility model, and

Fig. 8 is a schematic perspective view of a cover plate of the novel housing structure of the present utility model.

The reference numerals are:

10. The device comprises a shell, 101, a bottom plate, 102, a vertical plate, 1021, steps, 103, an extension part, 1031 and a limit groove;

20. A partition plate;

30. Cover plate 301, limit cavity 302, spacing 303, limit groove;

40. A pole, 401, a first welding surface, 402, a second welding surface;

50. A cell receiving cavity;

60. A limit protrusion;

70. A cell connecting sheet;

80. And a limiting plate.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, they may be fixedly connected, detachably connected, or of unitary construction, they may be mechanically or electrically connected, they may be directly connected, or they may be indirectly connected through intermediaries, or they may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1-8, the present application relates to a novel case structure and a battery assembly. As shown in fig. 1 to 4, the novel housing structure includes a housing 10, and the housing 10 is an external frame of the entire structure, providing mechanical strength and physical protection, and simultaneously, achieving the effect of assembling other components, thereby achieving the effect of various functions. Of course, the material of the housing 10 may be high-strength plastic, aluminum alloy or other alloy having excellent corrosion resistance, which can achieve the effect of improving the service life.

The plurality of partition plates 20 are arranged in the housing 10 at intervals along a preset direction, the plurality of partition plates 20 are arranged in the housing 10 and are uniformly divided into a plurality of battery cell accommodating cavities 50 along the preset direction, the batteries can be ensured to be mutually independent, faults such as short circuits and the like are avoided, meanwhile, the partition plates 20 are generally required to have good electrical insulation performance, and certain heat insulation capability is required to be provided for preventing heat conduction among the batteries. The preset direction is a length direction or a width direction of the housing 10, and can be set according to actual use requirements.

The cover plate 30 is arranged at the upper end of the shell 10, and can play a role in sealing and protecting, the cover plate 30 not only ensures that the interior of the shell 10 is not invaded by external environment (such as water, dust and the like), but also ensures the firmness and avoids loosening or falling off during operation, and the fixing mode of the cover plate 30 needs to take convenient disassembly and maintenance into consideration.

Further, at least one limiting plate 80 is disposed on a side of the cover plate 30 adjacent to the cell accommodating cavity 50. Through being provided with limiting plate 80, can realize good spacing fixed effect, simultaneously, can also ensure good assembly effect.

Further, the cover plate 30 may be provided with vents or heat dissipation holes to help dissipate heat from the battery inside the case, thereby improving the service life of the battery.

Preferably, the integrated cover plate 30 is adopted, a traditional plastic part under the top cover is omitted, the top cover structure is simplified, and the utilization rate of the height space of the battery cell is improved.

The plurality of poles 40 are respectively embedded in the housing 10 in a preset order, so that a good assembly effect can be ensured, thereby ensuring a stable structure, and meanwhile, an easy assembly and disassembly effect can be realized by adopting an embedding manner. The predetermined sequence may be a horizontal direction near one side of the cover plate 30.

The casing 10, the plurality of partition boards 20, and the cover board 30 enclose to form a plurality of battery core accommodating cavities 50, and the two sides of the plurality of battery core accommodating cavities 50 are respectively and oppositely provided with the pole posts 40. The battery cell accommodating cavity 50 is a space for accommodating battery cells, is formed by enclosing the housing 10, the partition plate 20 and the cover plate 30, can ensure good assembly effect of the battery, and meanwhile, the two sides of the housing 10 are respectively provided with the pole posts 40 oppositely, so that good electrical connection effect can be ensured;

The structure of the application can effectively prevent the batteries from generating short circuit and mutual friction or collision when the batteries expand, thereby ensuring the safety of the batteries in the charging and discharging processes. In addition, the design of the pole 40 enables the battery pack to achieve stable current transmission, thereby avoiding current fluctuations or malfunctions due to poor contact.

The arrangement of the partition plate 20 and the cover plate 30 can effectively partition the cells, reduce heat conduction between the cells, and reduce the overall heat accumulation of the battery pack. In addition, the cover plate 30 can be designed with heat dissipation holes according to the requirement, so as to increase air circulation, help the battery dissipate heat, prolong the service life of the battery and avoid safety accidents caused by overheat

The plurality of polar posts 40 are embedded into the shell 10 according to a preset sequence, so that the battery pack can be compatible with batteries of different specifications, and the expansion and the upgrading of the battery pack are facilitated. By rationally laying out the posts 40, it is ensured that the batteries are easily connected during assembly, improving the compatibility and flexibility of the battery pack.

The application can also solve the problems of unstable connection, low space utilization rate, high cost and the like of the traditional battery core structure, and can also improve the overall quality and reliability of the battery.

From the above description, it can be seen that the following technical effects are achieved:

In the embodiment of the application, an integrated forming mode is adopted, a plurality of battery cell accommodating cavities 50 are formed by enclosing a shell 10, a plurality of partition plates 20 and a cover plate 30, and polar columns 40 are respectively and oppositely arranged at two sides of each battery cell accommodating cavity 50, so that the purposes of improving structural stability and space utilization rate are achieved, the technical effects of simplifying the structure and improving production efficiency are realized, the technical problems that the shell in the traditional battery structure adopts stamping forming, the internal cavity structure is single, the connection mode of the polar columns 40 and the shell is unstable, the welding process of a battery cell connecting sheet 70 is still to be improved, and the cover plate 30 is in a split type structure and comprises lower plastic parts, so that the pack structure is complex, the top cover structure is complex, the high space utilization rate is low, the production cost is high, and the production efficiency is low are solved.

Further, the housing 10, the plurality of partition plates 20, and the cover plate 30 are integrally injection molded. It can be appreciated that by adopting the mode of integral injection molding, not only is the error in the assembly process reduced, but also the mechanical strength and the overall tightness of the product are improved, and the injection molding process also allows the size, the shape and the tolerance of each part to be precisely controlled, so that the stability of the battery system is ensured.

The adoption of the structure has the following beneficial effects including but not limited to:

The integrated forming reduces the assembling procedures of parts, reduces the manufacturing cost and the production period, improves the structural stability, and avoids the problems of loose connection or liquid leakage possibly caused by repeated assembly.

Further, the housing 10 includes a bottom plate 101 disposed horizontally, vertical plates 102 are disposed around the peripheral edge of the bottom plate 101, and a plurality of partition plates 20 are disposed between the vertical plates 102 at intervals. It will be appreciated that the bottom plate 101 is a basic part of the casing 10, the bottom plate 101 horizontally arranged provides a stable supporting surface, the vertical plates 102 are arranged around the bottom plate 101 at the peripheral edges to form the boundaries of the battery accommodating chambers, and the partition plates 20 are arranged between the vertical plates 102, wherein each partition plate 20 partitions the plurality of battery accommodating chambers 50.

The combination of the vertical plates 102 and the bottom plate 101 effectively enhances the overall rigidity and stability of the housing 10, so that the battery pack can maintain structural integrity under vibration or impact conditions, and the space layout is optimized by reasonably arranging the partition plates 20, so that the layout between the battery cells is compact and is not easily disturbed by the outside.

As shown in fig. 7, a step 1021 is provided on top of the vertical plate 102, and a limit protrusion 60 is provided on top of the step 1021 and the plurality of partition plates 20. It can be understood that good assembly and limiting effect can be ensured, so that stability of the structure is ensured, tightness of the structure is further improved, external factors (such as moisture and dust) are prevented from entering the battery cavity, and safety and durability of the battery are improved.

As shown in fig. 8, a plurality of limiting cavities 301 are arranged on one side of the cover plate 30, close to the housing 10, at intervals, a plurality of spacing cavities 301 and the peripheral outer edges of the cover plate 30 are provided with spaces 302 in advance, spacing grooves 303 are formed between the spaces 302 and adjacent spacing cavities 301, and the spacing grooves 303 are engaged with the spacing protrusions 60. It can be understood that the limit groove 303 is clamped with the limit protrusion 60 on the cover plate 30 to ensure that the cover plate 30 is firmly connected with the housing 10, so that the tightness is improved, namely, the clamping design of the limit cavity 301 and the limit protrusion 60 ensures the tightness of the cover plate 30 and the housing 10, the inside of the battery is prevented from being wetted, polluted or foreign matters are prevented from entering, and the shock resistance is enhanced, namely, the limit clamping provides stronger shock resistance and prevents the battery from loosening due to vibration or impact in the transportation or use process.

Further, an extension 103 is provided on the housing 10 near the pole 40. It can be appreciated that a good assembly effect can be ensured, thereby avoiding the occurrence of interference and further ensuring the stability of the structure.

Further, a plurality of limit grooves 1031 matching with the pole 40 in shape are respectively provided on the extension portion 103, and the pole 40 is provided in the limit grooves 1031. It can be understood that the extending portion 103 is provided with a plurality of limit grooves 1031 matching with the shape of the pole 40, and the pole 40 can be embedded into the limit grooves 1031, so as to ensure the stable position of the pole 40 and prevent poor contact caused by movement or collision, and the stable connection is that the stable fixation of the pole 40 can effectively prevent poor contact caused by external vibration, thereby avoiding the performance degradation or the damage of the battery. The limit grooves 1031 ensure the connection accuracy of the pole 40 and the battery pack, and improve the electrical stability and safety of the battery system.

As shown in fig. 5-6, the pole 40 is provided with a first welding surface 401 and a second welding surface 402, respectively. It can be appreciated that the welding effect can be well ensured, the connection with the battery cell is facilitated, and meanwhile, the battery cell connecting sheet 70 can facilitate the electrical connection between the battery cells of the battery pack.

It is to be understood that ultrasonic welding or laser welding may be performed on the first welding surface 401 and the second welding surface 402, and laser welding is preferably employed on the first welding surface 401.

Further, a core connection piece 70 is further disposed on the pole 40. It will be appreciated that a good electrical connection can be achieved.

The application also relates to a battery assembly comprising the novel housing structure as described above.

It should be understood that the present invention also includes, but is not limited to, a plurality of battery cells respectively disposed in the battery cell accommodating cavity 50.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the protection scope of the present utility model.

Claims (10)

1. A novel shell structure, characterized in that it comprises: A shell (10); Several partition plates (20) are spaced apart within the outer casing (10) along a predetermined direction; A cover plate (30) is disposed on the upper end of the outer casing (10); and Several pole posts (40) are respectively embedded in the outer shell (10) in a preset order; The outer shell (10), the partition plates (20) and the cover plate (30) are arranged to form a plurality of cell accommodating cavities (50), and the electrode posts (40) are respectively arranged opposite to each other on both sides of the plurality of cell accommodating cavities (50). 2. The novel shell structure according to claim 1, characterized in that the outer shell (10), the plurality of partition plates (20) and the cover plate (30) are integrally injection molded. 3. The novel shell structure according to claim 1, characterized in that the shell (10) includes: a horizontally arranged base plate (101), a vertical plate (102) is arranged around the four edges of the base plate (101), and a plurality of partition plates (20) are arranged at intervals between the vertical plates (102). 4. The novel shell structure according to claim 3, characterized in that a step (1021) is provided on the top of the vertical plate (102), and a limiting protrusion (60) is provided on the top of the step (1021) and the top of the plurality of partition plates (20). 5. The novel shell structure according to claim 4, characterized in that the cover plate (30) is provided with a plurality of limiting cavities (301) at intervals on the side near the outer shell (10), the plurality of limiting cavities (301) and the outer edges of the cover plate (30) are pre-set with a distance (302), a limiting groove (303) is formed between the distance (302) and the adjacent limiting cavity (301), and the limiting groove (303) engages with the limiting protrusion (60). 6. The novel housing structure according to claim 1, characterized in that an extension (103) is provided on the outer shell (10) and near the pole post (40). 7. The novel shell structure according to claim 6, characterized in that a plurality of limiting grooves (1031) matching the shape of the pole post (40) are respectively opened on the extension (103), and the pole post (40) is disposed in the limiting groove (1031). 8. The novel shell structure according to claim 1, characterized in that a first welding surface (401) and a second welding surface (402) are respectively provided on the pole post (40). 9. The novel housing structure according to claim 1, characterized in that a cell connecting piece (70) is further provided on the pole post (40). 10. A battery assembly, characterized in that it includes a novel housing structure as described in any one of claims 1-9.