Reinforcing piece for battery bottom

Abstract

The utility model discloses a reinforcer for the bottom of a battery. The reinforcer comprises a rectangular insulating plate and a plurality of insulating lug bosses, the rectangular insulating plate is used for abutting against the bottom of the battery cell; positioning holes are formed in the two ends of the rectangular insulating plate in the length direction; and a plurality of insulating lug bosses are arranged on the other surface of the rectangular insulating plate. The reinforcer for the bottom of the battery can be attached to the bottom of a battery cell by arranging the rectangular insulating plate so as to play a role in protecting the bottom of the battery cell. And the insulating lug boss on the rectangular insulating plate can abut against the bottom of the shell, so that a space for electrolyte to circulate is formed at the bottom of the battery cell, and the performance of the battery is improved. And the insulating lug boss can also be matched with a flow guide structure at the bottom of the shell, so that the circulation efficiency of the electrolyte is further improved. The reinforcer for the bottom of the battery can be matched with rectangular insulating plates and insulating convex parts with different sizes, so that the use requirements of different lithium batteries can be met.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a reinforcing member for the bottom of a battery. Background Technology

[0002] With the development of new energy vehicles, the safety of lithium batteries is receiving increasing attention. Lithium batteries are filled with electrolyte. The electrolyte is the ion transport medium in the battery, containing electrolytes that can transfer positive and negative ions, creating a potential difference between the two electrodes and thus generating current. During charging and discharging, ions in the electrolyte need to migrate between the positive and negative electrodes to store and release electrical energy. The electrolyte at the bottom of the lithium battery surrounds an insulating plate. In conventional designs, because the insulating plate is flush with the battery end, this obstructs electrolyte flow, hindering electrolyte performance and thus reducing battery performance and creating safety hazards.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a reinforcing member for the bottom of a battery, which can fit in close to the bottom of a lithium battery to protect the bottom of the cell and create a space at the bottom of the cell for electrolyte to flow through, thereby improving battery performance.

[0005] To achieve the above objectives, a specific embodiment of this utility model provides the following technical solution: a reinforcing member for the bottom of a battery, comprising: a rectangular insulating plate and a plurality of insulating protrusions. The rectangular insulating plate is used to abut against the bottom of the battery cell; positioning holes are provided at both ends of the rectangular insulating plate along its length; the plurality of insulating protrusions are disposed on the other surface of the rectangular insulating plate.

[0006] In one or more embodiments of this utility model, the insulating protrusions are sequentially spaced along the long side edge of the rectangular insulating plate.

[0007] In one or more embodiments of this utility model, the insulating protrusions are sequentially spaced along the width direction of the rectangular insulating plate on the short edge of the rectangular insulating plate.

[0008] In one or more embodiments of this utility model, the rectangular insulating plate is a polypropylene plate; the insulating protrusion is a polypropylene protrusion.

[0009] In one or more embodiments of this utility model, the insulating protrusion is selected from one of a rectangular insulating protrusion, a columnar insulating protrusion, and a platform-shaped insulating protrusion.

[0010] In one or more embodiments of this utility model, a plurality of flow holes are provided on the rectangular insulating plate, and the plurality of flow holes constitute a flow hole array.

[0011] In one or more embodiments of this utility model, the insulating protrusion is integrally formed with the rectangular insulating plate.

[0012] In one or more embodiments of this utility model, the insulating protrusion is fixed to the surface of the rectangular insulating plate by ultrasonic welding.

[0013] In one or more embodiments of this utility model, the thickness of the rectangular insulating plate is between 0.1mm and 3.0mm.

[0014] In one or more embodiments of this utility model, the thickness of the rectangular insulating plate is selected from one of 0.1mm, 0.15mm, 0.3mm, 0.5mm, 0.8mm, 1.2mm, 1.5mm and 1.8mm.

[0015] Compared with existing technologies, the battery bottom reinforcement of this utility model, by setting a rectangular insulating plate, can fit closely to the bottom of the battery cell, providing protection for the bottom of the cell. The insulating protrusions on the rectangular insulating plate can abut against the bottom of the outer casing, thereby creating a certain space at the bottom of the battery cell, allowing electrolyte to flow through, thus improving battery performance and providing a certain degree of protection for the battery cell. The insulating protrusions can also cooperate with the flow-guiding structure at the bottom of the outer casing to further improve the electrolyte flow efficiency. The positioning holes facilitate the positioning and installation of the battery bottom reinforcement with the lithium battery. In addition, this battery bottom reinforcement can be used with rectangular insulating plates and insulating protrusions of different sizes to meet the needs of different lithium battery applications. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first perspective view of the reinforcing member at the bottom of the battery in one embodiment of the present invention;

[0018] Figure 2This is a second perspective view of the reinforcing member at the bottom of the battery in one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a reinforcing member at the bottom of the battery in another embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a reinforcing member at the bottom of the battery in another embodiment of the present invention.

[0021] Explanation of key figure labels:

[0022] 1-Rectangular insulating plate, 11-Positioning hole, 12-Flow hole, 2-Insulating protrusion. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0024] like Figure 1-4 As shown, a battery bottom reinforcement in one embodiment of the present invention includes a rectangular insulating plate 1 and a plurality of insulating protrusions 2. The rectangular insulating plate 1 abuts against the bottom of the battery cell. Positioning holes 11 are provided at both ends of the rectangular insulating plate 1 along its long end. The plurality of insulating protrusions 2 are disposed on the other surface of the rectangular insulating plate 1 and can abut against the bottom of the lithium battery casing.

[0025] Lithium-ion batteries consist of a cell and a casing. To allow for effective electrolyte flow within the battery, a flow-through structure is necessary. However, the bottom of the battery casing is typically in contact with the bottom of the cell, preventing proper electrolyte flow. If a flow-through structure were placed directly on the bottom of the casing, protrusions might exist. These protrusions directly contact the cell, potentially posing a safety hazard during battery use.

[0026] In the above embodiment, the bottom reinforcement of the battery, by providing a rectangular insulating plate 1, can fit snugly against the bottom of the lithium battery, thus protecting the bottom of the cell. The insulating protrusion 2 on the rectangular insulating plate 1 can abut against the bottom of the outer casing, thereby forming a certain space at the bottom of the cell, allowing electrolyte to flow through and improving battery performance. The insulating protrusion 2 can also cooperate with the flow guiding structure at the bottom of the outer casing to further improve the electrolyte flow efficiency. The positioning hole 11 facilitates the positioning and installation of the bottom reinforcement of the battery with the lithium battery.

[0027] In one implementation, such as Figure 1 and Figure 2 As shown, the insulating protrusions 2 are arranged sequentially and at intervals along the long edge of the rectangular insulating plate 1 to effectively support the battery cell without affecting the flow of electrolyte at the bottom of the battery cell.

[0028] Furthermore, such as Figure 3 As shown, according to the needs of lithium battery use, the insulating protrusions 2 can also be arranged sequentially at intervals along the width direction of the rectangular insulating plate 1 on the short edge of the rectangular insulating plate 1.

[0029] Understandably, the insulating protrusions 2 can also be positioned at other locations on the rectangular insulating plate 1 according to requirements such as the electrolyte flow direction. Similarly, the size of the rectangular insulating plate 1 can be selected according to the size of the lithium battery, and is not fixed.

[0030] In one embodiment, the insulating protrusion 2 can be selected from one of a rectangular insulating protrusion 2, a columnar insulating protrusion 2, and a platform-shaped insulating protrusion 2, for matching different electrolyte flow-conducting structures. Similarly, the insulating protrusion 2 can also have other similar shapes, the specific shape being selected according to the flow-conducting structure to be matched and the size of the battery to be supported.

[0031] In one embodiment, the insulating protrusion 2 is integrally formed with the rectangular insulating plate 1, thereby ensuring the connection strength between the insulating protrusion 2 and the rectangular insulating plate 1 and preventing them from falling off during use.

[0032] In another embodiment, to allow for flexible adjustment of the position of the insulating protrusion 2 on the rectangular insulating plate 1, the insulating protrusion 2 can be ultrasonically welded to the rectangular insulating plate 1 after it has been positioned. This configuration allows the battery bottom reinforcement to be adapted to different types of battery cells and improves the protection of the battery cell bottom to a certain extent.

[0033] In one embodiment, the rectangular insulating plate 1 can be a polypropylene plate. The insulating protrusion 2 can be a polypropylene protrusion. Both the base plate and the protrusion are made of insulating material, which avoids the reinforcing member affecting the battery circuitry and prevents short circuits or other problems. Furthermore, these materials have good chemical stability to the electrolyte and are less likely to react with it, thereby extending the battery's lifespan. Additionally, polypropylene, for example, has a low density, which helps reduce the battery's weight and increases its energy density.

[0034] The thickness of the rectangular insulating plate 1 is between 0.1 mm and 3.0 mm. Furthermore, the thickness of the rectangular insulating plate 1 can be selected from one of 0.1 mm, 0.15 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.2 mm, 1.5 mm and 1.8 mm.

[0035] Furthermore, the rectangular insulating plate 1 abuts against the bottom of the battery cell, and the electrolyte cannot flow sufficiently at the point of contact. For example... Figure 3 As shown, a rectangular insulating plate 1 has multiple flow holes 12, forming an array of flow holes 12. The electrolyte can react with the battery cells at the rectangular insulating plate 1 through these flow holes 12, improving the battery's charge and discharge performance. Since the battery cells generate heat during use, failure to dissipate this heat in a timely manner will affect the performance of the lithium battery. Therefore, it is necessary to dissipate the heat generated by the lithium battery promptly.

[0036] In summary, the battery bottom reinforcement of this utility model, by setting a rectangular insulating plate 1, can fit snugly against the bottom of the battery cell, thus protecting the bottom of the cell. The insulating protrusion 2 on the rectangular insulating plate 1 can abut against the bottom of the outer casing, thereby creating a certain space at the bottom of the battery cell, allowing electrolyte to flow through, thereby improving battery performance and providing a certain degree of protection for the battery cell. The insulating protrusion 2 can also cooperate with the flow guiding structure at the bottom of the outer casing to further improve the electrolyte flow efficiency. The positioning hole 11 facilitates the positioning and installation of the battery bottom reinforcement with the lithium battery. In addition, this battery bottom reinforcement can be used with rectangular insulating plates 1 and insulating protrusions 2 of different sizes to meet the needs of different lithium battery applications.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reinforcing member for the bottom of a battery, characterized in that, include: A rectangular insulating plate is used to abut against the bottom of the battery cell; positioning holes are provided at both ends of the rectangular insulating plate along its length. and Multiple insulating protrusions are disposed on the other surface of the rectangular insulating plate.

2. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The insulating protrusions are sequentially spaced along the long edge of the rectangular insulating plate.

3. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The insulating protrusions are sequentially spaced along the width direction of the rectangular insulating plate on the short edge of the rectangular insulating plate.

4. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The rectangular insulating plate is a polypropylene plate; the insulating protrusion is a polypropylene protrusion.

5. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The insulating protrusion is selected from one of the following: rectangular insulating protrusion, columnar insulating protrusion, and pediment-shaped insulating protrusion.

6. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The rectangular insulating plate has multiple flow holes, which together form a flow hole array.

7. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The insulating protrusion is integrally formed with the rectangular insulating plate.

8. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The insulating protrusion is fixed to the surface of the rectangular insulating plate by ultrasonic welding.

9. The reinforcing member for the bottom of the battery according to claim 1, characterized in that, The thickness of the rectangular insulating plate is between 0.1mm and 3.0mm.

10. The reinforcing member for the bottom of the battery according to claim 9, characterized in that, The thickness of the rectangular insulating plate is selected from one of 0.1mm, 0.15mm, 0.3mm, 0.5mm, 0.8mm, 1.2mm, 1.5mm and 1.8mm.

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