AGM (Absorbed Glass Mat) composite separator for high-power battery
By designing the zigzag and planar layer structures of the AGM composite separator and combining them with ultra-fine glass fiber reinforcement, the problems of porosity and mechanical strength of the separator in high-power batteries were solved, achieving higher porosity and mechanical strength and extending battery life.
Patent Information
- Application Number
- CN202520245232.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The porosity and mechanical strength of AGM separators in existing high-power batteries are difficult to improve further, which affects battery capacity and service life.
Design an AGM composite separator that uses a zigzag surface layer and a planar layer structure, combined with ultra-fine glass fiber reinforcement and connecting ribs to enhance porosity and improve mechanical strength.
The porosity and mechanical strength of the separator are improved, meeting the performance requirements of high-power batteries and extending battery life.
Smart Images
Figure CN223665616U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, specifically to an AGM composite separator for high-power batteries. Background Technology
[0002] The primary function of battery separators is to prevent direct contact between the positive and negative plates, which could cause an internal short circuit. Damaged or aged separators can lead to direct contact between the positive and negative plates, causing a short circuit. This accelerates the sulfation process, resulting in decreased battery capacity, lower terminal voltage, reduced electrolyte density, and increased internal resistance. Sulfation also accelerates moisture loss, creating a vicious cycle that further impacts battery performance.
[0003] Battery separators play a more critical role in high-power batteries, as their performance and quality directly affect battery capacity, charge-discharge cycle life, and self-discharge performance. Currently, the porosity of conventional separators (including materials such as rubber, PP, PE, PVC, and AGM) is difficult to further increase, directly limiting battery capacity when these separators are used in high-power lead-acid batteries. Furthermore, the mechanical strength of conventional AGM separators needs improvement. Because high-power batteries experience rapid volume changes of their contents during charging and discharging, resulting in significant stress, this is detrimental to extending their service life. Summary of the Invention
[0004] The technical problem to be solved by this utility model is: how to design an AGM composite separator with higher porosity and more reliable mechanical strength.
[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:
[0006] An AGM composite separator for high-power batteries includes a first planar layer, a first rib, a zigzag layer, a second rib, and a second planar layer. The zigzag layer is located between the first planar layer and the second planar layer. Several parallel first ribs are arranged between the zigzag layer and the first planar layer, and several parallel second ribs are arranged between the zigzag layer and the second planar layer.
[0007] Preferably, a plurality of first connecting bars are connected between adjacent first reinforcing bars, and a plurality of second connecting bars are connected between adjacent second reinforcing bars.
[0008] Preferably, the first connecting bar is perpendicular to the first reinforcing bar, and the second connecting bar is perpendicular to the second reinforcing bar.
[0009] Preferably, the first reinforcing bar and the second reinforcing bar are perpendicular to each other.
[0010] Preferably, both the outer surface of the first planar layer and the outer surface of the second planar layer have several pits.
[0011] Preferably, there is a loose glass fiber filler between the zigzag surface layer and the first planar layer, and between the zigzag surface layer and the second planar layer.
[0012] Preferably, the first reinforcing bar is replaced by a zigzag protrusion on the inner side of the first planar layer, or the second reinforcing bar is replaced by a zigzag protrusion on the inner side of the second planar layer.
[0013] Preferably, the first planar layer, the first reinforcing material, the zigzag surface layer, the second reinforcing material, and the second planar layer are all made of glass fiber, and the diameter of the glass fiber is 0.4~3μm.
[0014] In the above technical solution, the first planar layer and the second planar layer are the outer surfaces of the partition, and their materials are the same as those of conventional AGM partitions. The zigzag surface layer, the first stiffener, and the second stiffener are all made of ultra-fine glass fiber. The zigzag surface layer is located inside the composite partition, which not only serves as a skeletal support but also facilitates the formation of pores. The stiffeners located on both sides of the zigzag surface layer help to strengthen the toughness of the partition and provide support between the zigzag surface layer and the two planar layers, further increasing the porosity.
[0015] This invention provides an AGM composite separator for high-power batteries. The technical solution uses a zigzag surface layer as an internal support and adds reinforcing ribs to the inner side of the separator's outer surface, which not only improves mechanical strength but also increases porosity to a certain extent. This invention meets the performance requirements of high-power batteries for separators. Attached Figure Description
[0016] Figure 1 This is an exploded view of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a structural diagram of the zigzag protrusion;
[0019] In the picture:
[0020] Detailed Implementation
[0021] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.
[0022] Example 1
[0023] AGM composite separators for high-power batteries, such as Figures 1-2 As shown, it includes a first planar layer 1, a first reinforcing bar 2, a zigzag surface layer 3, a second reinforcing bar 4, and a second planar layer 5. The zigzag surface layer 3 is located between the first planar layer 1 and the second planar layer 5. A plurality of parallel first reinforcing bars 2 are arranged between the zigzag surface layer 3 and the first planar layer 1, and a plurality of parallel second reinforcing bars 4 are arranged between the zigzag surface layer 3 and the second planar layer 5.
[0024] In the above technical solution, the first planar layer 1 and the second planar layer 5 are the outer surfaces of the partition, and their materials are the same as those of conventional AGM partitions. The zigzag surface layer 3, the first stiffener 2, and the second stiffener 4 are also made of ultra-fine glass fiber. The zigzag surface layer 3 is located inside the composite partition, which not only serves as a skeletal support but also facilitates the formation of pores. The stiffeners located on both sides of the zigzag surface layer 3 help to strengthen the toughness of the partition and support it between the zigzag surface layer 3 and the two planar layers, further increasing the porosity.
[0025] Example 2
[0026] AGM composite separators for high-power batteries, such as Figures 1-3 As shown, the structure includes a first planar layer 1, a first reinforcing member 2, a zigzag surface layer 3, a second reinforcing member 4, and a second planar layer 5. The zigzag surface layer 3 is located between the first planar layer 1 and the second planar layer 5. Several parallel first reinforcing members 2 are arranged between the zigzag surface layer 3 and the first planar layer 1, and several parallel second reinforcing members 4 are arranged between the zigzag surface layer 3 and the second planar layer 5. Several first connecting ribs connect adjacent first reinforcing members 2, and several second connecting ribs connect adjacent second reinforcing members 4. The first connecting ribs are perpendicular to the first reinforcing members 2, and the second connecting ribs are perpendicular to the second reinforcing members 4. The first reinforcing members 2 and the second reinforcing members 4 are perpendicular to each other. Several pits are present on the outer surface of both the first planar layer 1 and the second planar layer 5. Loose glass fiber fillers 6 are present between the zigzag surface layer 3 and the first planar layer 1, and between the zigzag surface layer 3 and the second planar layer 5. The first rib 2 is replaced by a zigzag protrusion 7 on the inner side of the first planar layer 1, or the second rib 4 is replaced by a zigzag protrusion 7 on the inner side of the second planar layer 5. The first planar layer 1, the first rib 2, the zigzag layer 3, the second rib 4, and the second planar layer 5 are all made of glass fiber, and the diameter of the glass fiber is 0.4~3μm.
[0027] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.
Claims
1. An AGM composite separator for high-power batteries, characterized in that... It includes a first planar layer (1), a first reinforcing bar (2), a zigzag surface layer (3), a second reinforcing bar (4), and a second planar layer (5). The zigzag surface layer (3) is located between the first planar layer (1) and the second planar layer (5). Several parallel first reinforcing bars (2) are arranged between the zigzag surface layer (3) and the first planar layer (1), and several parallel second reinforcing bars (4) are arranged between the zigzag surface layer (3) and the second planar layer (5).
2. The AGM composite separator for high-power batteries according to claim 1, characterized in that, Several first connecting bars are connected between adjacent first reinforcing bars (2), and several second connecting bars are connected between adjacent second reinforcing bars (4).
3. The AGM composite separator for high-power batteries according to claim 2, characterized in that, The first connecting bar is perpendicular to the first reinforcing bar (2), and the second connecting bar is perpendicular to the second reinforcing bar (4).
4. The AGM composite separator for high-power batteries according to claim 1, characterized in that, The first reinforcing member (2) and the second reinforcing member (4) are perpendicular to each other.
5. The AGM composite separator for high-power batteries according to claim 1, characterized in that, Both the outer surface of the first planar layer (1) and the outer surface of the second planar layer (5) have several pits.
6. The AGM composite separator for high-power batteries according to claim 1, characterized in that, There are loose glass fiber fillers (6) between the zigzag surface layer (3) and the first planar layer (1), and between the zigzag surface layer (3) and the second planar layer (5).
7. The AGM composite separator for high-power batteries according to claim 1, characterized in that, The first reinforcing bar (2) is replaced by a zigzag protrusion (7) on the inner side of the first planar layer (1), or the second reinforcing bar (4) is replaced by a zigzag protrusion (7) on the inner side of the second planar layer (5).
8. The AGM composite separator for high-power batteries according to claim 1, characterized in that, The first planar layer (1), the first reinforcing material (2), the zigzag surface layer (3), the second reinforcing material (4), and the second planar layer (5) are all made of glass fiber, and the diameter of the glass fiber is 0.4~3μm.