Aluminum profile partition plate for automobile battery
By employing a combination of aluminum profiles and polypropylene materials, the problem of insufficient permeability and sealing in existing battery separators has been solved, achieving efficient electrolyte permeation and stable connection of the battery casing, thereby improving battery safety and performance.
Patent Information
- Application Number
- CN202520114906.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing battery separators have poor permeability while fulfilling their isolation function, failing to effectively guarantee the isolation effect while improving the permeability of the electrolyte.
Using aluminum profiles as the main material, combined with a front diaphragm, a rear diaphragm, and a connecting rod made of polypropylene, it is designed with large and small through holes, and equipped with side and bottom elastic sealing sleeves and a slot structure. The front and rear diaphragms are connected by the connecting rod. The acid resistance and alkali resistance of polypropylene are used to ensure the permeability and sealing of the diaphragm.
This design achieves both isolation of the positive and negative electrodes and improved electrolyte permeability. Furthermore, the sealed structure ensures the fixation of the battery casing and the sealing of any gaps, thus guaranteeing the safety and performance of the battery.
Smart Images

Figure CN223843113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive battery separator technology, and in particular to an aluminum profile separator for automotive batteries. Background Technology
[0002] With the current energy crisis becoming increasingly serious, new energy vehicles, especially electric vehicles, are receiving more and more attention. Electric vehicle batteries are divided into two main categories: storage batteries and fuel cells. Storage batteries are suitable for pure electric vehicles and include lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries.
[0003] The structure of a storage battery is quite complex, including multiple components such as positive plates, negative plates, separators, battery casing, cover, lead nails, positive terminals, negative terminals, rubber caps, and electrolyte. The battery separator mainly prevents contact between the positive and negative plates, avoiding internal short circuits and self-discharge. However, existing battery separators cannot provide both isolation and easy electrolyte penetration. Often, separators with good isolation effects have poor penetration capabilities. Therefore, a separator that can improve penetration capabilities while ensuring isolation effects is needed. Utility Model Content
[0004] The main objective of this invention is to provide an aluminum profile separator for automotive batteries, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An aluminum profile separator for automotive batteries includes a separator body, a front separator fixedly connected to the front side of the separator body, a rear separator fixedly connected to the back side of the separator body, a large through hole on the front side of the separator body, a connecting rod fixedly connected to the inner wall of the large through hole, a small through hole on the back side of the separator body, and a connecting hole on the inner wall of the small through hole.
[0007] In order to achieve the effect of inserting a connecting rod to connect the front diaphragm and the rear diaphragm, as an aluminum profile separator for automotive batteries according to this utility model, the back of the front diaphragm and the front of the rear diaphragm are provided with insertion holes, and the inner wall of the insertion holes is fixedly connected with a connecting rod. There are nine connecting rods and nine large through holes. The materials of the front diaphragm, the rear diaphragm and the connecting rod are all polypropylene.
[0008] In order to achieve the effect of fixing the elastic sealing sleeve, as an aluminum profile separator for automotive batteries of this utility model, a side protrusion strip is fixedly connected to the inner wall of the side of the separator body, and a side elastic sealing sleeve is fixedly connected to the outer surface of the side protrusion strip.
[0009] In order to achieve the effect of fixing the bottom elastic sealing sleeve, as an aluminum profile separator for automotive batteries of this utility model, a bottom protrusion is fixedly connected to the inner wall of the lower surface of the separator body, and a bottom elastic sealing sleeve is fixedly connected to the outer surface of the bottom protrusion.
[0010] In order to achieve the effect of fixing the battery cover plate with the clip, the aluminum profile separator for automobile batteries of this utility model has a top groove on the upper surface of the separator body and a clip groove on the inner bottom wall of the top groove.
[0011] In order to achieve the effect of fixing the partition and cover plate with screws, the inner bottom wall of the top groove of the aluminum profile partition for automobile battery of this utility model has fixing holes.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This aluminum profile separator for automotive batteries, through the arrangement of a separator body, a front separator, a rear separator, a connecting rod, large through holes, small through holes, and connecting holes, has the following features: the separator body is made of aluminum profile, while the front separator, rear separator, and connecting rod are made of polypropylene. Therefore, the separator body, front separator, rear separator, and connecting rod all have good acid and alkali resistance. The separator body mainly serves to separate the positive and negative electrodes of the battery. The separator body has nine large through holes and twenty small through holes. The large through holes contain connecting rods that connect the front and rear separators. Electrolyte solution permeates through either the front or rear separator. The presence of large and small through holes facilitates the passage of electrolyte through the separator, thus ensuring good permeability of the separator while maintaining the separation of the positive and negative electrodes.
[0014] 2. The aluminum profile separator for automotive batteries, through the setting of side protrusions, side elastic sealing sleeves, bottom protrusions and bottom elastic sealing sleeves, has two side elastic sealing sleeves on both sides of the separator body and a bottom elastic sealing sleeve at the bottom. When fixing the separator in the battery shell, the side elastic sealing sleeves and bottom elastic sealing sleeves are inserted into the corresponding grooves to connect the separator and the battery shell and seal the gap. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of an aluminum profile separator for automotive batteries according to Embodiment 1 of this utility model;
[0016] Figure 2 This is a bottom-view axonometric structural diagram of an aluminum profile separator for automotive batteries according to Embodiment 1 of this utility model;
[0017] Figure 3 This is a frontal cross-sectional view of an aluminum profile separator for an automotive battery according to Embodiment 1 of this utility model.
[0018] Figure 4This is a right-side cross-sectional view of an aluminum profile separator for an automotive battery according to Embodiment 1 of this utility model.
[0019] Figure 5 This is a cross-sectional view of the small through holes in an aluminum profile separator for automotive batteries according to Embodiment 1 of this utility model.
[0020] Figure 6 This is an isometric structural diagram of the main body of the separator in an aluminum profile separator for automotive batteries according to Embodiment 1 of this utility model;
[0021] Figure 7 This is a top-view axonometric structural diagram of the partition plate in an aluminum profile partition plate for automotive batteries according to Embodiment 1 of this utility model;
[0022] Figure 8 This is an exploded structural diagram of the connecting rod in an aluminum profile separator for automotive batteries according to Embodiment 1 of this utility model.
[0023] In the diagram: 1. Main body of the partition; 2. Front diaphragm; 3. Rear diaphragm; 4. Connecting rod; 5. Large through hole; 6. Small through hole; 7. Connecting hole; 8. Insertion hole; 9. Side protrusion strip; 10. Side elastic sealing sleeve; 11. Bottom protrusion strip; 12. Bottom elastic sealing sleeve; 13. Top groove; 14. Slot; 15. Fixing hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1
[0026] like Figure 1-8 As shown, an aluminum profile separator for automotive batteries includes a separator body 1, a front separator 2 fixedly connected to the front side of the separator body 1, a rear separator 3 fixedly connected to the back side of the separator body 1, a large through hole 5 opened on the front side of the separator body 1, a connecting rod 4 fixedly connected to the inner wall of the large through hole 5, a small through hole 6 opened on the back side of the separator body 1, and a connecting hole 7 opened on the inner wall of the small through hole 6.
[0027] In practical use, the separator body 1, front diaphragm 2, rear diaphragm 3, connecting rod 4, large through hole 5, small through hole 6, and connecting hole 7 are configured. The separator body 1 is made of aluminum profile, while the front diaphragm 2, rear diaphragm 3, and connecting rod 4 are made of polypropylene. Therefore, the separator body 1, front diaphragm 2, rear diaphragm 3, and connecting rod 4 all have good acid and alkali resistance. The separator body 1 mainly serves to separate the positive and negative electrodes of the battery. The separator body 1 has nine large through holes 5 and twenty small through holes 6. The large through holes 5 contain the connecting rod 4, which connects the front diaphragm 2 and rear diaphragm 3 of the separator. The electrolyte solution permeates through the front diaphragm 2 or the rear diaphragm 3. The presence of the large through holes 5 and small through holes 6 facilitates the passage of electrolyte through the separator, thus ensuring good permeability of the separator while maintaining the isolation between the positive and negative electrodes.
[0028] In this embodiment, insertion holes 8 are provided on the back side of the front diaphragm 2 and the front side of the rear diaphragm 3. A connecting rod 4 is fixedly connected to the inner wall of the insertion hole 8. There are nine connecting rods 4 and nine large through holes 5. The materials of the front diaphragm 2, the rear diaphragm 3 and the connecting rod 4 are all polypropylene.
[0029] In practical use, the connecting rod 4 is inserted through the socket 8 to connect the front diaphragm 2 and the rear diaphragm 3.
[0030] In this embodiment, a side protrusion strip 9 is fixedly connected to the inner wall of the side of the partition body 1, and a side elastic sealing sleeve 10 is fixedly connected to the outer surface of the side protrusion strip 9.
[0031] In practical use, the side elastic sealing sleeve 10 is fixed by setting the side protrusion strip 9.
[0032] In this embodiment, a bottom protrusion 11 is fixedly connected to the inner wall of the lower surface of the partition body 1, and a bottom elastic sealing sleeve 12 is fixedly connected to the outer surface of the bottom protrusion 11.
[0033] In practical use, the bottom elastic sealing sleeve 12 is fixed by setting the bottom protrusion 11.
[0034] In this embodiment, a top groove 13 is provided on the upper surface of the partition body 1, and a slot 14 is provided on the inner bottom wall of the top groove 13.
[0035] In actual use, the battery cover is fixed by using the slot 14 and the battery cover clip.
[0036] In this embodiment, a fixing hole 15 is provided on the inner bottom wall of the top groove 13.
[0037] In practical use, the partition and cover are fixed with screws through the fixing holes 15.
[0038] Working principle: The separator body 1 is made of aluminum profile, while the front separator 2, rear separator 3, and connecting rod 4 are made of polypropylene. Therefore, the separator body 1, front separator 2, rear separator 3, and connecting rod 4 all have good acid and alkali resistance. The separator body 1 mainly serves to separate the positive and negative electrodes of the battery. The separator body 1 has nine large through holes 5 and twenty small through holes 6. The connecting rod 4 is located inside the large through holes 5, connecting the front separator 2 and the rear separator 3. The electrolyte solution permeates through the front separator 2 or the rear separator 3. The presence of the large through holes 5 and the small through holes 6 facilitates the passage of electrolyte through the separator. The separator body 1 has two side elastic sealing sleeves 10 on both sides and a bottom elastic sealing sleeve 12 at the bottom. When fixing the separator inside the battery casing, the side elastic sealing sleeves 10 and the bottom elastic sealing sleeve 12 are inserted into the corresponding slots to connect the separator and the battery casing and seal the gaps.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An aluminum profile separator for automotive batteries, comprising a separator body (1), characterized in that: A front diaphragm (2) is fixedly connected to the front of the partition body (1), a rear diaphragm (3) is fixedly connected to the back of the partition body (1), a large through hole (5) is opened on the front of the partition body (1), a connecting rod (4) is fixedly connected to the inner wall of the large through hole (5), a small through hole (6) is opened on the back of the partition body (1), and a connecting hole (7) is opened on the inner wall of the small through hole (6).
2. The aluminum profile separator for automotive batteries according to claim 1, characterized in that: The back of the front diaphragm (2) and the front of the rear diaphragm (3) are provided with insertion holes (8), and a connecting rod (4) is fixedly connected to the inner wall of the insertion hole (8).
3. The aluminum profile separator for automotive batteries according to claim 1, characterized in that: A side protrusion strip (9) is fixedly connected to the inner wall of the side of the partition body (1), and a side elastic sealing sleeve (10) is fixedly connected to the outer surface of the side protrusion strip (9).
4. The aluminum profile separator for automotive batteries according to claim 1, characterized in that: A bottom protrusion strip (11) is fixedly connected to the inner wall of the lower surface of the partition body (1), and a bottom elastic sealing sleeve (12) is fixedly connected to the outer surface of the bottom protrusion strip (11).
5. The aluminum profile separator for automotive batteries according to claim 1, characterized in that: The upper surface of the partition body (1) is provided with a top groove (13), and the inner bottom wall of the top groove (13) is provided with a slot (14).
6. The aluminum profile separator for automotive batteries according to claim 5, characterized in that: The inner bottom wall of the top groove (13) is provided with a fixing hole (15).
7. The aluminum profile separator for automotive batteries according to claim 1, characterized in that: The number of connecting rods (4) and large through holes (5) are both nine, and the materials of the front diaphragm (2), the rear diaphragm (3) and the connecting rods (4) are all polypropylene.