Dustproof and waterproof plastic package structure of lithium battery module

Abstract

The utility model discloses a dustproof and waterproof plastic package structure of a lithium battery module, which comprises a lower shell and an upper cover arranged at the top of the lower shell, the top of the lower shell upwards forms a rectangular-ambulatory-plane convex part, the rectangular-ambulatory-plane convex part is clamped on the inner side of the upper cover, the inner top wall of the upper cover is fixedly connected with a circle of upper sealing ring, and the lower top wall of the upper sealing ring is fixedly connected with a circle of lower sealing ring. The upper sealing ring abuts against and contacts with the hollow-square-shaped protruding part, a circle of hollow-square-shaped groove is formed in the top of the lower shell, and a lower sealing ring is embedded in the hollow-square-shaped groove and abuts against and contacts with the bottom end of the upper cover. According to the utility model, the top of the lower shell is provided with a circle of homocentric-square-shaped groove, the lower sealing ring is embedded in the homocentric-square-shaped groove, and the lower sealing ring abuts against the bottom end of the upper cover, so that a first seal can be formed; the upper sealing ring abuts against the hollow-square-shaped protruding part to form second sealing, and therefore the waterproof and dustproof capacity between the lower shell and the upper cover is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery packaging technology, specifically a dustproof and waterproof plastic encapsulation structure for a lithium battery module. Background Technology

[0002] With the development of science and technology, lithium batteries have now become mainstream. Lithium batteries are batteries that use lithium metal or lithium alloy as positive / negative electrode materials and use non-aqueous electrolyte solutions. They can be divided into two categories according to their raw materials: lithium metal batteries and lithium-ion batteries. With the development of society, lithium battery packs have been widely used in various fields.

[0003] During use, in order to protect the lithium battery pack, the staff usually place it inside the casing and seal the casing with a cover plate. However, water or dust can easily get into the connection points, which can easily damage the battery. Therefore, a solution is urgently needed. Utility Model Content

[0004] (1) Technical problems solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dustproof and waterproof encapsulation structure for lithium battery modules, solving the problems mentioned in the background section.

[0006] (2) Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dustproof and waterproof plastic-sealed structure for a lithium battery module, comprising a lower housing and an upper cover disposed on the top of the lower housing. The top of the lower housing forms a U-shaped protrusion, which is engaged with the inner side of the upper cover. An upper sealing ring is fixedly connected to the inner top wall of the upper cover, and the upper sealing ring abuts against the U-shaped protrusion. A U-shaped groove is formed on the top of the lower housing, and a lower sealing ring is embedded inside the U-shaped groove, which abuts against the bottom end of the upper cover.

[0008] Preferably, two upper positioning strips are fixedly connected to both the front and rear sides of the upper cover, and side support strips are fixedly connected to both the front and rear sides of the lower housing. The upper positioning strips and the side support strips are respectively provided with a first through hole and a second through hole. The side support strips and the upper positioning strips are fixedly installed by a locking assembly.

[0009] Preferably, the locking assembly includes a pressure bar, both ends of which are fixedly connected to vertically downward studs. The lower end of the studs passes through a first through hole and a second through hole, and a nut is threaded onto the lower end of the studs.

[0010] Preferably, the bottom of the pressure strip is fixedly connected to an insert, the top of the side support strip has a slot, and the lower end of the insert is inserted into the slot.

[0011] Preferably, the insert is a cuboid structure and the slot is a rectangular groove.

[0012] Preferably, the lower sealing ring and the upper sealing ring are made of either silicone or fluororubber.

[0013] (3) Beneficial effects

[0014] This utility model provides a dustproof and waterproof encapsulation structure for a lithium battery module, which has the following advantages:

[0015] 1. In this utility model, a circular groove in the shape of a square is provided on the top of the lower shell, and a lower sealing ring is embedded inside the groove. The lower sealing ring abuts against the bottom of the upper cover, thus forming a first seal. The upper sealing ring abuts against the convex part in the shape of a square, forming a second seal, thereby improving the waterproof and dustproof capability between the lower shell and the upper cover.

[0016] 2. In this utility model, the upper positioning strip and the side support strip are fixed by the locking component, which further fixes the upper cover and the lower housing, thereby improving the sealing degree between the upper cover and the lower housing and enhancing the waterproof and dustproof capabilities; and the lower sealing ring inside the U-shaped groove can be removed and replaced when it is severely worn. Attached Figure Description

[0017] Figure 1 This is a front-view perspective view of a dustproof and waterproof plastic sealing structure for a lithium battery module proposed in this utility model.

[0018] Figure 2 This is an exploded three-dimensional structural diagram of a dustproof and waterproof plastic sealing structure for a lithium battery module proposed in this utility model;

[0019] Figure 3 This is a cross-sectional view of a dustproof and waterproof plastic sealing structure for a lithium battery module proposed in this utility model;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 This is a partial structural diagram of a dustproof and waterproof plastic sealing structure for a lithium battery module proposed in this utility model.

[0022] In the diagram: 1. Lower housing; 101. Rectangular protrusion; 102. Rectangular groove; 2. Upper cover; 3. Lower sealing ring; 4. Upper sealing ring; 5. Upper positioning strip; 6. Side support strip; 601. Slot; 7. Locking assembly; 701. Pressure strip; 702. Insert strip; 703. Stud; 704. Nut. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a dustproof and waterproof plastic sealing structure for a lithium battery module, including a lower housing 1 and an upper cover 2 disposed on the top of the lower housing 1. The top of the lower housing 1 forms a U-shaped protrusion 101, which is snapped into the inner side of the upper cover 2. An upper sealing ring 4 is fixedly connected to the inner top wall of the upper cover 2. The upper sealing ring 4 abuts against the U-shaped protrusion 101. A U-shaped groove 102 is opened on the top of the lower housing 1. A lower sealing ring 3 is embedded in the U-shaped groove 102 and abuts against the bottom end of the upper cover 2.

[0025] The lower sealing ring 3 abuts against the bottom end of the upper cover 2, thus forming the first seal; the upper sealing ring 4 abuts against the U-shaped protrusion 101, forming the second seal, thus improving the waterproof and dustproof capability between the lower housing 1 and the upper cover 2; and the lower sealing ring 3 inside the U-shaped groove 102 can be removed and replaced when it is severely worn.

[0026] Furthermore, two upper positioning strips 5 are fixedly connected to both the front and rear sides of the upper cover 2, and side support strips 6 are fixedly connected to both the front and rear sides of the lower housing 1. The upper positioning strips 5 and the side support strips 6 are respectively provided with a first through hole and a second through hole. The side support strips 6 and the upper positioning strips 5 are fixedly installed by locking components 7, which improves the sealing degree between the upper cover 2 and the lower housing 1 and enhances the waterproof and dustproof capabilities.

[0027] The locking assembly 7 includes a pressure bar 701, with vertically downward-facing studs 703 fixedly connected to both ends of the pressure bar 701. The lower end of the stud 703 passes through the first through hole and the second through hole, and a nut 704 is threaded onto the lower end of the stud 703.

[0028] The bottom of the pressure strip 701 is fixedly connected to the insert strip 702, and the top of the side support strip 6 has a slot 601, with the lower end of the insert strip 702 inserted into the slot 601.

[0029] When locking, the upper cover 2 is installed on the top of the lower housing 1. At this time, the upper positioning strip 5 is located above the side support strip 6. Then, the pressure strip 701 is pressed and set on the top of the upper positioning strip 5. At this time, the stud 703 is set through the first through hole and the second through hole in sequence. The nut 704 is threaded onto the lower end of the stud 703. The nut 704 is rotated and abuts against the bottom of the side support strip 6. At this time, the insert strip 702 is inserted into the slot 601 to further improve the connection stability.

[0030] The insert 702 has a cuboid structure, and the slot 601 is a rectangular groove. The slot 601 is cleverly designed as a rectangular groove, its shape perfectly matching the cuboid structure of the insert 702. This rectangular groove design not only provides sufficient space to accommodate the insert 702 but also ensures that the insert 702 is not unnecessarily obstructed or misaligned during insertion. When the insert 702 is fully inserted into the slot 601, the contact area between the two is maximized, thereby significantly improving the stability and reliability of the connection.

[0031] The lower sealing ring 3 and the upper sealing ring 4 are made of either silicone or fluororubber; they have the advantages of high temperature resistance to aging and acid and alkali corrosion resistance, as well as good elastic recovery and mechanical strength, and can maintain sealing performance under large temperature changes.

[0032] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dustproof and waterproof encapsulation structure for a lithium battery module, characterized in that: The device includes a lower housing (1) and an upper cover (2) disposed on the top of the lower housing (1). The top of the lower housing (1) forms a U-shaped protrusion (101) that is engaged with the inner side of the upper cover (2). An upper sealing ring (4) is fixedly connected to the inner top wall of the upper cover (2). The upper sealing ring (4) abuts against the U-shaped protrusion (101). A U-shaped groove (102) is opened on the top of the lower housing (1). A lower sealing ring (3) is embedded inside the U-shaped groove (102). The lower sealing ring (3) abuts against the bottom end of the upper cover (2).

2. The dustproof and waterproof encapsulation structure for a lithium battery module according to claim 1, characterized in that: The upper cover (2) has two upper positioning strips (5) fixedly connected to both the front and rear sides, and the lower housing (1) has side support strips (6) fixedly connected to both the front and rear sides. The upper positioning strips (5) and the side support strips (6) are respectively provided with a first through hole and a second through hole. The side support strips (6) and the upper positioning strips (5) are fixedly installed by a locking component (7).

3. The dustproof and waterproof encapsulation structure for a lithium battery module according to claim 2, characterized in that: The locking assembly (7) includes a pressure bar (701), both ends of which are fixedly connected to vertically downward studs (703). The lower end of the studs (703) passes through the first through hole and the second through hole, and the lower end of the studs (703) is threaded with a nut (704).

4. The dustproof and waterproof encapsulation structure for a lithium battery module according to claim 3, characterized in that: The bottom of the pressure strip (701) is fixedly connected to the insert (702), and the top of the side support strip (6) is provided with a slot (601), and the lower end of the insert (702) is inserted into the slot (601).

5. The dustproof and waterproof encapsulation structure for a lithium battery module according to claim 4, characterized in that: The insert (702) has a cuboid structure, and the slot (601) has a rectangular groove.

6. The dustproof and waterproof encapsulation structure for a lithium battery module according to claim 1, characterized in that: The lower sealing ring (3) and the upper sealing ring (4) are made of either silicone or fluororubber.

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