Automobile battery pack housing with good sealing

Abstract

The utility model discloses a good sealing car battery package shell relates to new energy automobile field. This good sealing car battery package shell, including base and upper cover, the cavity for installing car battery is formed between the base and upper cover, the outside four -quarter fixed mounting of base has a plurality of first fixed blocks, the outside fixed sleeve of upper cover bottom has fixed frame, and the outside four -quarter of fixed frame all fixed mounting has a plurality of second fixed blocks, the junction of base and upper cover is provided with seal cover, and the seal cover is at the junction of fixed frame and base and the outside of the junction of a plurality of first fixed blocks and a plurality of second fixed blocks. This good sealing car battery package shell, through the inboard seal groove and the inlaying of seal frame strip form the first line of sealed defense, and the outside seal cover covers and forms the second line of sealed barrier, and the risk of moisture, dust infiltration is greatly reduced in double -sealed structure.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a well-sealed automotive battery pack shell. Background Technology

[0002] As the core power source of new energy vehicles, the working environment of automotive batteries directly affects their lifespan and safety. The battery pack casing, as a key component protecting the battery, needs to withstand the vibrations and bumps during vehicle operation, as well as the corrosion from rain, dust, and moisture in the external environment over a long period of time.

[0003] Currently, the sealing structure of traditional automotive battery pack casings mostly uses a single sealing strip or simple snap-fit ​​connections. After long-term use, the sealing strip is prone to loosening and aging due to vibration, leading to a decline in sealing performance. External moisture and dust can easily seep into the cavity from the connection between the base and the top cover or the gaps in the fixing blocks, causing battery short circuits, corrosion, and other malfunctions, seriously affecting battery stability and vehicle driving safety. Therefore, how to improve the sealing reliability of battery pack casings has become an urgent problem to be solved in the field of new energy vehicle battery technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a car battery pack housing with good sealing performance, solving the problem that the sealing performance of existing car battery pack housings deteriorates after long-term use due to insufficient sealing structure design, making it easy for moisture and dust to seep into the cavity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a well-sealed automotive battery pack housing, comprising a base and a top cover, wherein a cavity for installing an automotive battery is formed between the base and the top cover, a plurality of first fixing blocks are fixedly installed around the outer perimeter of the base, a fixing frame is fixedly fitted around the bottom outer perimeter of the top cover, and a plurality of second fixing blocks are fixedly installed around the outer perimeter of the fixing frame, and a sealing cover is provided at the connection between the base and the top cover, and the sealing cover is located outside the connection between the fixing frame and the base, as well as the connection between the plurality of first fixing blocks and the plurality of second fixing blocks.

[0006] Preferably, the top of the base is provided with a sealing groove, and the bottom of the upper cover is fixedly connected with a sealing frame strip, and the sealing frame strip fits into the sealing groove.

[0007] Preferably, the sealing cover is formed by sequentially splicing a first sealing strip, a second sealing strip, a third sealing strip, and a fourth sealing strip, and the first sealing strip, the second sealing strip, the third sealing strip, and the fourth sealing strip are respectively located around the connection between the base and the top cover.

[0008] Preferably, the first sealing strip, the second sealing strip, the third sealing strip and the fourth sealing strip are all provided with receiving grooves inside, and the receiving grooves are in contact with the corresponding first fixing block and second fixing block.

[0009] Preferably, the first fixing block has a first mounting hole that runs vertically through it, the second fixing block has a second mounting hole that runs vertically through it, and the first sealing strip, the second sealing strip, the third sealing strip and the fourth sealing strip each have a plurality of third mounting holes that communicate with the receiving groove.

[0010] Preferably, the first mounting hole, the second mounting hole, and the third mounting hole are fixedly connected by bolts.

[0011] Its beneficial effects are as follows: 1. The well-sealed car battery pack shell forms the first line of defense through the fit between the inner sealing groove and the sealing frame strip, and the outer sealing cover forms the second sealing barrier. The double sealing structure greatly reduces the risk of moisture and dust infiltration.

[0012] 2. This well-sealed automotive battery pack casing features a base with a first fixing block and a top cover with a second fixing block, all secured to the third mounting hole of the sealing cover via bolts. This mechanical fixation, combined with pressure, ensures a tight seal between the sealing components, preventing loosening due to vibration, a problem common in traditional structures. The sealing cover employs a spliced ​​design, and the receiving grooves of the first, second, third, and fourth sealing strips fit tightly against the first and second fixing blocks. The bolt tightening force maintains the stability of the sealing structure over a long period, reducing the risk of seal failure due to component aging or vibration. 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; Figure 2 This is a schematic diagram of the structure of the base of this utility model; Figure 3 This is a schematic diagram of the structure of the top cover of this utility model; Figure 4 This is a schematic diagram of the structure of the sealing cover of this utility model; Figure 5 This is an exploded view of the sealing cover of this utility model.

[0015] In the diagram: 1. Base; 11. First fixing block; 12. First mounting hole; 13. Sealing groove; 2. Top cover; 21. Fixing frame; 22. Second fixing block; 23. Second mounting hole; 24. Sealing frame strip; 3. Sealing cover; 31. First sealing strip; 32. Second sealing strip; 33. Third sealing strip; 34. Fourth sealing strip; 35. Receiving groove; 36. Third mounting hole. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] This utility model discloses a well-sealed automotive battery pack casing, according to the attached... Figure 1-3 As shown, the device includes a base 1 and a top cover 2. A cavity for installing a car battery is formed between the base 1 and the top cover 2. Multiple first fixing blocks 11 are fixedly installed around the outer perimeter of the base 1. A fixing frame 21 is fixedly fitted on the outer perimeter of the bottom of the top cover 2. Multiple second fixing blocks 22 are fixedly installed around the outer perimeter of the fixing frame 21. A sealing cover 3 is provided at the connection between the base 1 and the top cover 2. The sealing cover 3 is located outside the connection between the fixing frame 21 and the base 1, as well as the connection between the multiple first fixing blocks 11 and the multiple second fixing blocks 22.

[0019] The top of the base 1 has a sealing groove 13, and the bottom of the cover 2 is fixedly connected with a sealing frame strip 24, which fits into the sealing groove 13.

[0020] The first sealing line is formed by the fit between the inner sealing groove 13 and the sealing frame strip 24, and the outer sealing cover 3 forms the second sealing barrier. The double sealing structure greatly reduces the risk of moisture and dust infiltration.

[0021] According to the appendix Figure 4-5 As shown, the sealing cover 3 is further formed by sequentially splicing together the first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34, and the first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34 are respectively located around the connection between the base 1 and the upper cover 2.

[0022] The first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34 are all provided with receiving grooves 35, and the receiving grooves 35 are in contact with the corresponding first fixing block 11 and second fixing block 22.

[0023] The first fixing block 11 of the base 1 and the second fixing block 22 of the top cover 2 are fixedly connected to the third mounting hole 36 of the sealing cover 3 by bolts. While achieving mechanical fixation, pressure is used to ensure that the sealing components fit tightly, avoiding the loosening of the seal caused by vibration in traditional structures. The sealing cover 3 adopts a splicing design, and the receiving grooves 35 of the first sealing strip 31, the second sealing strip 32, the third sealing strip 33, and the fourth sealing strip 34 fit tightly with the first fixing block 11 and the second fixing block 22. The tightening force of the bolts can maintain the stability of the sealing structure for a long time, reducing the problem of seal failure caused by component aging and vibration.

[0024] The sealing cover 3 is assembled from the first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34. If a sealing strip is damaged, the corresponding part can be replaced individually without replacing the entire sealing structure, thus reducing maintenance costs.

[0025] According to the appendix Figure 2-5 As shown, the first fixing block 11 has a first mounting hole 12 that runs vertically through it, the second fixing block 22 has a second mounting hole 23 that runs vertically through it, and the first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34 each have a plurality of third mounting holes 36 that communicate with the receiving groove 35.

[0026] According to the appendix Figure 1-5 As shown, the corresponding first mounting hole 12, second mounting hole 23 and third mounting hole 36 are further fixedly connected by bolts.

[0027] Working principle: When assembling the battery pack casing, the car battery is first installed into the cavity of the base 1, and then the top cover 2 is fastened onto the base 1. At this time, the sealing frame strip 24 at the bottom of the top cover 2 will be embedded into the sealing groove 13 at the top of the base 1, forming the first seal and initially blocking the connection between the cavity and the outside.

[0028] Next, the sealing cover 3, which is composed of the first sealing strip 31, the second sealing strip 32, the third sealing strip 33 and the fourth sealing strip 34, is fitted onto the outside of the connection between the base 1 and the top cover 2, so that the sealing cover 3 covers the connection between the fixing frame 21 and the base 1 and the connection between the first fixing block 11 and the second fixing block 22, while ensuring that the receiving groove 35 of each sealing strip fits into the corresponding first fixing block 11 and second fixing block 22.

[0029] Finally, by passing bolts through the first mounting hole 12 of the first fixing block 11, the second mounting hole 23 of the second fixing block 22, and the third mounting hole 36 of the sealing cover 3 and tightening them, the pressure of the bolts will tightly press the top cover 2, the base 1, and the sealing cover 3 together, making the sealing frame strip 24 fit more tightly with the sealing groove 13. At the same time, each sealing strip of the sealing cover 3 will be further deformed due to the pressure, and the gap at the connection will be completely filled, achieving multiple seals and effectively preventing external moisture, dust, etc. from entering the cavity.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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. A well-sealed automotive battery pack casing, comprising a base (1) and a top cover (2), wherein a cavity for mounting an automotive battery is formed between the base (1) and the top cover (2), characterized in that, Multiple first fixing blocks (11) are fixedly installed around the outer perimeter of the base (1). A fixing frame (21) is fixedly fitted on the outer perimeter of the bottom of the top cover (2). Multiple second fixing blocks (22) are fixedly installed around the outer perimeter of the fixing frame (21). A sealing cover (3) is provided at the connection between the base (1) and the top cover (2). The sealing cover (3) is located outside the connection between the fixing frame (21) and the base (1) and the connection between the multiple first fixing blocks (11) and the multiple second fixing blocks (22).

2. The automotive battery pack housing with good sealing performance according to claim 1, characterized in that, The base (1) has a sealing groove (13) on its top, and the top cover (2) has a sealing frame strip (24) fixedly connected to its bottom, and the sealing frame strip (24) fits into the sealing groove (13).

3. The automotive battery pack housing with good sealing performance according to claim 1, characterized in that, The sealing cover (3) is formed by sequentially splicing together the first sealing strip (31), the second sealing strip (32), the third sealing strip (33) and the fourth sealing strip (34), and the first sealing strip (31), the second sealing strip (32), the third sealing strip (33) and the fourth sealing strip (34) are respectively located around the connection between the base (1) and the top cover (2).

4. The automotive battery pack housing with good sealing performance according to claim 3, characterized in that, The first sealing strip (31), the second sealing strip (32), the third sealing strip (33) and the fourth sealing strip (34) are all provided with receiving grooves (35), and the receiving grooves (35) are in contact with the corresponding first fixing block (11) and second fixing block (22).

5. The automotive battery pack housing with good sealing performance according to claim 4, characterized in that, The first fixing block (11) has a first mounting hole (12) that runs vertically through it, and the second fixing block (22) has a second mounting hole (23) that runs vertically through it. The first sealing strip (31), the second sealing strip (32), the third sealing strip (33) and the fourth sealing strip (34) all have multiple third mounting holes (36) that are connected to the receiving groove (35).

6. The automotive battery pack housing with good sealing performance according to claim 5, characterized in that, The first mounting hole (12), the second mounting hole (23) and the third mounting hole (36) are fixedly connected by bolts.

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