Waterproof and dustproof structure of battery pack of electric vehicle

Abstract

The waterproof and dustproof structure comprises a battery bottom shell, a plurality of partition plates are installed in the battery bottom shell, the interior of the battery bottom shell is divided into a plurality of battery bins through the partition plates, a cover plate is installed in an opening of each battery bin through a hinge piece, a groove is formed in one end of each cover plate, and the groove is formed in the other end of each cover plate. Placing grooves are formed in the opening end faces of the battery bins, moving plates are arranged in the grooves, and the other ends of the moving plates are inserted into the placing grooves. According to the utility model, the structure is simple, after the moving plate is pushed, the wiring end of the battery module is exposed, so that whether the battery module is damaged can be detected without opening the whole cover plate, each battery compartment is provided with an independent cover plate, and after the battery module is installed, the corresponding cover plate can be directly closed, so that the battery module is convenient to use. And the contact probability with external moisture or dust is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle battery pack technology, specifically to a waterproof and dustproof structure for an electric vehicle battery pack. Background Technology

[0002] With the continuous development of society, the application of new energy sources is becoming increasingly widespread. Electric vehicles, as an important component of new energy promotion, have advantages such as low energy consumption, low pollution, and low noise. The battery pack, as the power source of electric vehicles, has become one of the most important components. To improve the maintainability and ease of assembly of electric vehicles and battery packs, battery packs typically consist of multiple battery modules and corresponding electrical protection systems.

[0003] Currently, battery modules are generally installed in the battery casing. However, the current battery casing has a simple structure and lacks waterproof and dustproof features on its open end face. Especially when the battery is repaired in a car repair shop, the battery casing is always open until the repair is successful, which allows external moisture and dust to enter the internal battery compartment and come into contact with the battery module. The presence of dust and moisture can easily cause short circuits or other malfunctions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a waterproof and dustproof structure for electric vehicle battery packs, which can be independently sealed after each battery module is installed, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a waterproof and dustproof structure for an electric vehicle battery pack, including a battery bottom shell, with multiple partitions installed inside the battery bottom shell, the inside of the battery bottom shell being divided into multiple battery compartments by the partitions, and a cover plate installed in the opening of each battery compartment by a hinge, with a groove at one end of each cover plate, and a placement groove on the opening end face of each battery compartment, with a movable plate inside each groove, the other end of each movable plate being inserted into the placement groove, and bolts for pressing the cover plate and restricting the movable plate on each partition plate.

[0006] As a preferred technical solution, a first rubber layer is installed on both sides of the cover plate and on the end face of the cover plate facing the hinge. The outer side of the first rubber layer is in contact with the inner side of the battery compartment. A second rubber layer is installed on both sides of the movable plate. The outer side of the second rubber layer is in contact with the inner side of the battery compartment. The end of the movable plate away from the cover plate is recessed to form an installation groove. A third rubber layer is installed in each installation groove. The third rubber layer is in contact with the positioning groove.

[0007] As a preferred technical solution, the end of the movable plate away from the positioning groove is provided with multiple positioning holes, each positioning hole is provided with a positioning rod, the other end of the positioning rod extends to the outside and is installed on the inner wall of the groove.

[0008] As a preferred technical solution, each partition plate is provided with a circular groove with openings on both sides. Each circular groove has a screw hole on its bottom surface. Bolts are threaded into the screw holes. The nuts of the bolts are located inside the circular grooves. The inner side of the nut on the bolt abuts against the inner wall of the groove, while the outer ring of the nut on the bolt abuts against the end face of the movable plate.

[0009] As a preferred technical solution, the battery compartment is equipped with a positioning frame that matches the length and width of the battery module.

[0010] As a preferred technical solution, one end of each separator is provided with a wiring groove, and one end of the battery bottom shell is provided with a wiring port that is opposite to the wiring groove.

[0011] As a preferred technical solution, the battery bottom shell is provided with multiple fixing holes.

[0012] The beneficial effects of this utility model are: the structure of this utility model is simple. After the moving plate is pushed, the wiring terminals of the battery module will be exposed, so as to detect whether the battery module is damaged. There is no need to open the entire cover. Each battery compartment is equipped with an independent cover. After the battery module is installed, the corresponding cover can be closed directly, reducing the probability of contact with external moisture or dust. Furthermore, the cover and moving plate can be directly positioned by bolts, which increases the convenience of operation. Attached Figure Description

[0013] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after removing any one of the cover plates and the movable plate;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after the bolts are removed;

[0017] Figure 4 This is a schematic diagram of the structure of the cover plate and the movable plate in this utility model.

[0018] The components are: 1. Battery bottom shell; 2. Separator; 3. Cover plate; 4. Groove; 5. Movable plate; 6. Positioning rod; 7. Bolt; 8. Wiring port; 9. Positioning groove; 10. Circular groove; 11. Screw hole; 12. First rubber layer; 13. Second rubber layer; 14. Third rubber layer. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention discloses a waterproof and dustproof structure for an electric vehicle battery pack, including a battery bottom shell 1. Multiple partitions 2 are installed inside the battery bottom shell 1, dividing the interior of the battery bottom shell 1 into multiple battery compartments. Each battery compartment opening is fitted with a cover plate 3 via a hinge. One end of each cover plate 3 is provided with a groove 4. Each opening end face of the battery compartment is provided with a placement groove. Each groove 4 contains a movable plate 5, the other end of which is inserted into the placement groove. Each partition 2 is provided with bolts 7 for pressing the cover plate 3 and restricting the movable plate 5.

[0023] In this embodiment, a first rubber layer 12 is installed on both sides of the cover plate 3 and on the end face of the cover plate 3 facing the hinge. The outer side of the first rubber layer 12 is in contact with the inner side of the battery compartment. A second rubber layer 13 is installed on both sides of the movable plate 5. The outer side of the second rubber layer 13 is in contact with the inner side of the battery compartment. The end of the movable plate 5 away from the cover plate 3 is recessed to form an installation groove. A third rubber layer 14 is installed in the installation groove. The third rubber layer 14 is in contact with the positioning groove 9.

[0024] In this embodiment, the end of the movable plate 5 away from the positioning groove 9 is provided with multiple positioning holes, and each positioning hole is provided with a positioning rod 6. The other end of the positioning rod 6 extends to the outside and is installed on the inner wall surface of the groove 4.

[0025] In this embodiment, each partition 2 is provided with a circular groove 10 with openings on both sides. Each circular groove 10 has a screw hole 11 on its bottom surface. Each bolt 7 is threaded into the screw hole 11. The nut of each bolt 7 is located inside the circular groove 10. The inner side of the nut on the bolt 7 abuts against the inner wall of the groove 4, while the outer ring of the nut on the bolt 7 abuts against the end face of the movable plate 5. After the bolt moves downward along the screw hole, it can press the cover plate downward, so that the movable plate can abut tightly against the positioning groove. The outer ring of the nut on the bolt can abut against one end of the movable plate, preventing the movable plate from moving and ensuring positioning.

[0026] In this embodiment, a positioning frame that matches the length and width of the battery module is installed inside the battery compartment. The battery module can be placed into the positioning frame to ensure the stability of the battery module after placement. After positioning, the battery module can also be fixed inside the battery compartment with screws.

[0027] In this embodiment, one end of the partition 2 is provided with a wiring groove, and one end of the battery bottom shell 1 is provided with a wiring port 8 opposite to the wiring groove, so that the wires can pass through the wiring groove and the wiring port to extend to the outside and connect with the car.

[0028] In this embodiment, the battery bottom shell 1 is provided with multiple fixing holes. Generally, a battery top cover is installed on the top of the battery bottom shell to cover and seal the battery bottom shell.

[0029] During maintenance, first loosen the bolts. After the bolts are removed, the moving plate can move along the positioning rod. After the moving rod moves, part of the battery compartment will open. The opened part is the wiring part of the battery module. By contacting the device with the wire terminals, it is possible to detect whether the battery module is damaged, thus greatly reducing the degree of opening and reducing the amount of external dust and moisture entering.

[0030] Once the damaged battery module is identified, the corresponding cover can be opened centered on the hinge, while the remaining covers remain closed. This significantly reduces the risk of dust and moisture entering during the repair process. After the covers are closed, the first rubber layer on the cover and the second rubber layer on the moving plate can contact the inner side of the battery compartment, while the third rubber layer on the moving plate contacts the positioning groove. The first, second, and third rubber layers increase the sealing between the cover and the moving plate and the battery compartment, preventing the entry of external dust and moisture.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A waterproof and dustproof structure for an electric vehicle battery pack, characterized in that: The battery includes a battery bottom shell (1), and multiple partitions (2) are installed inside the battery bottom shell (1). The battery bottom shell (1) is divided into multiple battery compartments by the partitions (2). Each battery compartment has a cover plate (3) installed in its opening by a hinge. Each cover plate (3) has a groove (4) at one end. Each battery compartment has a placement groove on its opening end face. Each groove (4) has a movable plate (5) inside it. The other end of each movable plate (5) is inserted into the placement groove. Each partition (2) has bolts (7) for pressing the cover plate (3) and restricting the movable plate (5).

2. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: A first rubber layer (12) is installed on both sides of the cover plate (3) and on the end face of the cover plate (3) facing the hinge. The outer side of the first rubber layer (12) is in contact with the inner side of the battery compartment. A second rubber layer (13) is installed on both sides of the movable plate (5). The outer side of the second rubber layer (13) is in contact with the inner side of the battery compartment. The end of the movable plate (5) away from the cover plate (3) is recessed to form an installation groove. A third rubber layer (14) is installed in the installation groove. The third rubber layer (14) is in contact with the positioning groove (9).

3. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: The movable plate (5) is provided with multiple positioning holes at the end away from the positioning groove (9), and each positioning hole is provided with a positioning rod (6). The other end of the positioning rod (6) extends to the outside and is installed on the inner wall of the groove (4).

4. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: Each partition (2) is provided with a circular groove (10) with openings on both sides. Each circular groove (10) has a screw hole (11) on its bottom surface. Each bolt (7) is threaded into the screw hole (11). The nuts of the bolts (7) are located inside the circular groove (10). The inner side of the nut on the bolt (7) abuts against the inner wall of the groove (4), while the outer ring of the nut on the bolt (7) abuts against the end face of the movable plate (5).

5. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: The battery compartment is equipped with a positioning frame that matches the length and width of the battery module.

6. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: One end of the partition (2) is provided with a wiring groove, and one end of the battery bottom shell (1) is provided with a wiring port (8) that is opposite to the wiring groove.

7. The waterproof and dustproof structure of the electric vehicle battery pack according to claim 1, characterized in that: The battery base (1) has multiple fixing holes.

Images