CN220914383U - Battery shell, battery pack and vehicle - Google Patents
Battery shell, battery pack and vehicle Download PDFInfo
- Publication number
- CN220914383U CN220914383U CN202322453397.7U CN202322453397U CN220914383U CN 220914383 U CN220914383 U CN 220914383U CN 202322453397 U CN202322453397 U CN 202322453397U CN 220914383 U CN220914383 U CN 220914383U
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- CN
- China
- Prior art keywords
- battery
- winding
- housing
- wire
- wound
- 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.)
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Links
- 238000004804 winding Methods 0.000 claims abstract description 44
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 31
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000002579 anti-swelling effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery case, a battery pack and a vehicle. The battery case includes a main body, a cover plate, and a winding wire. The housing includes an opening open at least one end in a first direction; the cover plate is covered on the opening; the winding wires are wound on the peripheral surface of the shell in parallel; wherein, the winding direction of winding line is the angle setting with first direction. By wrapping the wound wire around the surface of the battery housing, the resistance to deformation is enhanced, and additional mechanical support and protection may be provided by wrapping the wound wire. The safety of the battery cell is greatly improved, and the electrolyte leakage risk caused by large-surface welding failure of the battery cell after the thermal runaway expansion of the battery cell is prevented. Through parallel arrangement's winding wire, under the prerequisite that increases the structural stability of battery housing body, avoid the great influence to the heat dissipation. Through winding direction and first direction angle setting, with winding wire and form a crisscross structure at original braced system, increase the resistance ability of battery casing body to vibrations and impact.
Description
Technical Field
The utility model relates to the technical field of vehicle batteries, in particular to a battery shell, a battery pack and a vehicle.
Background
Batteries have important roles and roles in new energy automobiles. Batteries are susceptible to swelling in overcharged, overdischarged, shorted or high temperature environments. Battery swelling not only affects battery performance, but may also cause serious safety problems such as leakage, fire, explosion, etc.
Accordingly, there is a need to provide a battery case, a battery pack, and a vehicle to at least partially solve the above-described problems.
Disclosure of utility model
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above-mentioned problems, a first aspect of the present utility model provides a battery case, characterized by comprising:
A housing body including an opening opened at least one end in a first direction;
the cover plate is covered on the opening;
A winding wire wound in parallel on the peripheral surface of the housing, an
The winding direction of the winding wire is arranged at an angle with the first direction.
The battery case according to the first aspect of the present utility model is enhanced in its resistance to deformation by winding a winding wire around its surface, and additional mechanical support and protection can be provided by winding the winding wire. Therefore, the stress on the surface of the battery cell can be uniformly distributed, local stress concentration is reduced, and the influence of the stress on the battery cell is reduced. The safety of the battery cell can be greatly improved, and the electrolyte leakage risk caused by large-scale welding failure after the battery cell generates a large amount of high-temperature high-pressure gas in single thermal runaway or repeatedly charges, discharges and expands is avoided. Through parallel arrangement's winding wire, under the prerequisite that increases the structural stability of battery housing body, avoid the great influence to the heat dissipation. Through winding direction and first direction angle setting, with winding wire and form a crisscross structure at original braced system, increase the resistance ability of battery casing body to vibrations and impact.
Further, the wound wire is an insulating material.
Further, the winding wire is adhesively connected with the housing.
Further, a gap is provided between adjacent ones of the wound wires.
Further, a gap of the wound wire in a middle portion of the housing is smaller than a gap of a peripheral portion.
A second aspect of the present utility model provides a battery pack comprising:
the battery case;
And the battery cell is accommodated in the battery shell.
The battery pack according to the present utility model has the battery case described in the first aspect described above, and thus has similar technical effects to the battery cells of the first aspect described above.
Further, the battery cell is a recyclable secondary battery cell.
Further, a pole is arranged on the cover plate, and the pole is electrically connected with the battery cell.
Further, the battery cell is one of a square shell battery cell, a soft package battery cell and a cylindrical battery cell.
A third aspect of the utility model provides a vehicle comprising the above battery pack.
According to the vehicle of the present utility model, the battery pack of the second aspect described above is provided, and therefore, similar technical effects to those of the battery pack of the second aspect described above are provided.
Drawings
The following drawings of embodiments of the present utility model are included as part of the utility model. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,
FIG. 1 is a schematic diagram of a cell according to a preferred embodiment of the present utility model;
Fig. 2 is a schematic view of a cell according to a preferred embodiment of the present utility model, in which the winding density of the winding wire is greater at the central portion of the cell than at the peripheral portion of the cell.
Description of the reference numerals
100: Shell body
110: Cover plate
200: Winding wire
D1: first direction
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.
Herein, ordinal words such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.
Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.
Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.
As shown in fig. 1, the present utility model provides a battery case. The battery case includes a case 100 body, a cap plate 110, and a winding wire 200. Wherein the housing 100 includes an opening opened along at least one end of the first direction D1. The cover plate 110 covers the opening, and optionally, the cover plate 110 is fixedly connected with the housing 100 and closes the opening. The winding wire 200 is wound in parallel on the circumferential surface of the case 100. By winding the winding wire 200 around the surface of the case 100, the deformation resistance thereof is enhanced. The wound wire may provide additional mechanical support and protection. Thus, the stress on the surface of the shell 100 can be uniformly distributed, the local stress concentration is reduced, and the influence of the stress on the shell 100 is reduced. The safety of the shell 100 can be greatly improved, and the risk of electrolyte leakage caused by large-scale welding failure after the shell 100 generates a large amount of high-temperature high-pressure gas in single thermal runaway or repeatedly charges, discharges and expands is prevented. By the winding wires 200 arranged in parallel, not being covered in a large area, a large influence on heat dissipation is avoided on the premise of increasing the structural stability of the battery case body 100. The winding direction of the winding wire 200 is disposed at an angle to the first direction D1, and the winding wire 200 and the original support system form a crossed structure, thereby increasing the resistance of the battery case 100 to vibration and impact.
In some embodiments of the present utility model, the wound wire 200 is an insulating material. The winding wire 200 is wound around the surface of the case 100, and prevents a short circuit to the case 100 while securing its anti-swelling property. In the present utility model or can, the material of the wound wire 200 may be resin, glass fiber insulating tape, mica tape, silica gel, or the like. The wound wire 200 has high temperature resistance, excellent mechanical strength and insulation.
In some embodiments of the utility model, the wound wire 200 is adhesively attached to the body of the housing 100. In the present embodiment, the wound wire 200 is adhesively connected to the body of the housing 100, specifically, the wound wire 200 is adhesively connected to the housing of the housing 100. As can be seen from the above, the size and shape of the housing 100 may be different according to practical application requirements, for example, may be cylindrical, rectangular, etc., and the winding wire 200 may be adapted to different housing 100 shapes by adhesively connecting the winding wire 200 with the housing 100 body. The adhesive attachment is a relatively simple and quick method, requiring no additional tools or equipment, and requiring only the selection of a suitable adhesive, glue or double-sided tape. By the adhesive fixing, the winding wire 200 can be uniformly attached to the case of the case 100 to form a tight bond, which helps to ensure that the expansion wire of the outer surface of the electric device can effectively avoid deformation of the electric device, and provide stable support and protection, and can ensure effectiveness of insulation performance. By the adhesive fixing, the winding wire 200 can be arranged and wound on the surface of the casing 100 in a predetermined form, and the overall aesthetic and decorative properties can be improved.
In some embodiments of the utility model, there is a gap between adjacent wound wires. The clearance between the winding wires ensures better air circulation on the surface of the battery shell body, and compared with the whole surface coverage, the battery shell can accelerate heat dissipation and conduction, improve the heat dissipation performance of the battery pack and reduce the risk of overheating of the battery. The gaps between adjacent winding wires reduce the amount of material used, thereby reducing the weight of the battery housing body, and the lightweight design is conducive to improving portability and application flexibility of the battery pack. The gap can provide a certain buffering and shock absorbing effect when the battery is impacted by external force. Gaps between adjacent winding wires can play a certain role in insulation and separation, so that the battery shell body is prevented from being in direct contact with other metal parts or the external environment, and possible short circuit or safety problems are avoided.
In some embodiments of the utility model, as shown in fig. 2, the gap of the winding ring adjacent to the layers is smaller in the middle of the cell body than in the periphery. That is, the winding density of the winding wire 200 is greater in the middle of the body of the case 100 than in the peripheral portion. The middle region tends to withstand higher internal pressures when the housing 100 is charged or discharged. In this case, the higher density of the wound wire 200 provides more support and structural stability in the middle of the case 100, which can effectively prevent the middle portion of the case 100 from being excessively expanded during charge and discharge, which can reduce deformation and stress concentration of the case 100 under high current load, thereby reducing the risk of failure and more reasonably protecting the case 100. The higher density of the wound wire 200 allows the internal pressure to be more evenly distributed in the middle of the housing 100. This helps to reduce localized stress concentrations and alleviates stress concentrations caused by expansion, and by distributing the pressure evenly, the higher density of the wound wire 200 reduces deformation and damage in the middle of the housing 100. The higher density of the wound wire 200 can enhance the stability of the housing 100 itself. It provides a stronger mechanical support that prevents the housing 100 from excessively expanding or shrinking during charge and discharge, which helps to keep the shape of the housing 100 stable, reducing deformation, damage or performance degradation of the housing 100 due to expansion.
The utility model also provides a battery pack, which comprises the battery shell and the battery core. Wherein, the electric core is held in the battery case. The battery pack can accommodate more cells in a limited space, thereby providing a higher energy density. This allows the battery pack to store more power in a relatively small volume, providing longer operating times. The battery cell is disposed in the case having the winding wire 200, so that the mechanical stability and impact resistance of the battery pack as a whole can be improved. The battery pack can bear external vibration, impact or deformation better, the influence of mechanical stress on the battery is reduced, and the reliability and durability of the battery are improved. By the arrangement of the wound wires 200, the battery pack can better accommodate application requirements of various shapes and sizes. This allows for flexible integration of the battery pack into different devices or systems, meeting diverse design requirements.
In the utility model, the battery cell is a recyclable secondary battery cell. In some embodiments, the cell is a phosphoric acid cell or a ternary lithium cell. Taking a ternary lithium battery as an example, a ternary lithium battery is a common lithium ion battery, and an electric core of the ternary lithium battery comprises a positive electrode material, a negative electrode material, an electrolyte, a diaphragm and a packaging material. The positive electrode material is typically lithium manganate (LiMn 2O4) or lithium cobaltate (LiCoO 2), which can provide high specific capacity and high operating voltage. Graphite is generally used as the negative electrode material. Graphite can intercalate/deintercalate lithium ions in the charge and discharge process, so as to realize the reaction of the battery. The electrolyte is typically composed of an organic solvent and a lithium salt. The electrolyte plays a role in conducting ions in the charge and discharge process and maintains chemical reaction between the anode and the cathode. The separator serves as a separator layer that prevents direct contact between the positive and negative electrodes while allowing passage of ions. The separator is typically made of a polymeric or ceramic material. The case 100 requires an outer case to protect its internal structure and to provide a stable external environment. The packaging material is usually an aluminum metal shell with good electrical conductivity and corrosion resistance.
In some embodiments of the present utility model, the cover plate 110 is provided with a post, and the post is electrically connected to the battery cell. Through the connection of the pole and the electrical core, the functions of current transmission and conduction can be realized. This ensures that the battery is operating properly and provides the required electrical power.
In some embodiments of the utility model, the battery cell is one of a square-shell battery cell, a soft-package battery cell and a cylindrical battery cell. In the utility model, the proper type of the battery cell can be selected according to the requirements of specific application scenes. Different cell types differ in battery capacity, size, weight, power output, safety, and cost.
A third aspect of the utility model provides a vehicle including the above battery pack, and therefore having similar technical effects to the above battery pack.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.
Claims (10)
1. A battery case, comprising:
A housing body including an opening opened at least one end in a first direction;
the cover plate is covered on the opening;
A winding wire wound in parallel on the peripheral surface of the housing, an
The winding direction of the winding wire is arranged at an angle with the first direction.
2. The battery housing of claim 1, wherein the wound wire is an insulating material.
3. The battery housing of claim 1, wherein said wound wire is adhesively attached to said housing.
4. The battery housing of claim 1, wherein adjacent ones of said wound wires have a gap therebetween.
5. The battery case according to claim 4, wherein a gap of the wound wire in a middle portion of the case is smaller than a gap of a peripheral portion.
6. A battery pack, comprising:
The battery case of any one of claims 1-5;
And the battery cell is accommodated in the battery shell.
7. The battery pack of claim 6, wherein the cells are rechargeable secondary cells.
8. The battery pack of claim 6, wherein the cover plate is provided with a post, and the post is electrically connected to the cell.
9. The battery pack of claim 6, wherein the cells are one of square-case cells, soft-pack cells, and cylindrical cells.
10. A vehicle comprising a battery pack according to any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322453397.7U CN220914383U (en) | 2023-09-08 | 2023-09-08 | Battery shell, battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322453397.7U CN220914383U (en) | 2023-09-08 | 2023-09-08 | Battery shell, battery pack and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220914383U true CN220914383U (en) | 2024-05-07 |
Family
ID=90913764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322453397.7U Active CN220914383U (en) | 2023-09-08 | 2023-09-08 | Battery shell, battery pack and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220914383U (en) |
-
2023
- 2023-09-08 CN CN202322453397.7U patent/CN220914383U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |