CN205248331U - Battery box casing and including car of this battery box casing - Google Patents

Abstract

The utility model discloses a battery box shell and an automobile comprising the battery box shell. The battery box case includes: an upper case with protruding ribs extending along the periphery of the upper case; and a lower case with ribs extending along the periphery of the lower case. a groove, the groove is located on the outer surface of the lower casing, the opening of the groove faces the upper casing, the protruding rib extends toward the groove, and is accommodated in the groove In the groove, wherein, the groove is filled with sealant, and the protruding ribs extend into the sealant. The purpose of the utility model is to provide a battery box shell, which can ensure consistent sealing at the peripheral joints of the battery box shell, thereby ensuring the sealing performance of the entire battery box.

Description

A battery box casing and an automobile including the battery box casing

technical field

The utility model relates to the technical field of battery box sealing, in particular to a battery box shell and an automobile comprising the battery box shell.

Background technique

Most of the lithium-ion battery boxes used in existing new energy vehicles are arranged and installed at the bottom of the vehicle. In the harsh external environment, if the battery box is not tightly sealed, it is easy to enter water and dust. Water and dust can cause a short circuit inside the battery box and reduce the service life of the battery box.

At present, the sealing of the battery box is mostly to add sealing rubber pads at the flange faces of the upper and lower housings, and then connect the upper and lower housings with bolts at the flanges. This method can only ensure the sealing of the bolt joints. If the distance between adjacent bolts is large, the sealing performance of the entire flange surface cannot be guaranteed; but if the number of bolts is increased in order to improve the sealing performance, the battery box will be damaged. The weight increases, reducing the energy density of the battery box.

In addition, if the flatness of the flange surface of the battery box is low, the flange surface will be uneven. At this time, even if the sealing method of sealing rubber gasket and bolt connection is used, the sealing performance will also be reduced.

Utility model content

In view of this, the purpose of the utility model is to provide a battery box shell, which can ensure consistent sealing performance at the peripheral joints of the battery box shell, thereby ensuring the sealing performance of the entire battery box.

The utility model provides a battery box shell, comprising:

an upper case having a protruding rib extending along the periphery of the upper case; and

a lower casing, the lower casing has a groove extending along the periphery of the lower casing, the groove is located on the outer surface of the lower casing, and the opening of the groove faces the upper casing, the protruding rib extends toward the groove and is accommodated in the groove,

Wherein, the groove is filled with sealant, and the protruding ribs extend into the sealant.

The volume of the sealant is less than or equal to the difference between the inner volume of the groove and the volume of the protruding rib.

The upper case further includes a horizontal portion extending horizontally outward from the periphery of the upper case, the groove has an inner side wall and an outer side wall, and the horizontal portion is attached to the upper edge of the outer side wall.

The width of the protruding rib is smaller than the width of the groove, and the battery box casing further includes:

first protrusions disposed at intervals on the inner sidewall; and

The second protrusions are arranged at intervals on the outer wall, and the protruding ribs) are clamped between the first protrusions and the second protrusions.

The first protrusions and the second protrusions are arranged at intervals.

It further includes: a strap binding the upper shell and the lower shell together.

Yet another embodiment of the present utility model also provides an automobile, which includes the above-mentioned battery box casing.

Description of drawings

The following drawings only schematically illustrate and explain the utility model, and do not limit the scope of the utility model.

Fig. 1 is a schematic structural view of the separated state of the battery case shell of the present invention.

Fig. 2 is a structural schematic diagram of the combined state of the battery box shell of the present invention.

Fig. 3 is a partial sectional view of the lower casing in the present invention.

Fig. 4 is a partial cross-sectional view of the combined state of the battery case shell of the present invention.

Fig. 5 is a partial sectional view of the battery box shell of the present invention.

Fig. 6 is a structural schematic diagram of another embodiment of the battery box shell of the present invention.

Label description:

1 battery box shell

10 upper shell

11 protruding ribs

12 level division

20 lower shell

21 grooves

21a medial wall

21b lateral wall

22 sealant

23a first protrusion

23b second protrusion

30 straps

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is now described with reference to the accompanying drawings, and the same symbols in each figure represent the same parts.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

In order to make the drawings concise, the figures in each figure only schematically show the relevant parts of the utility model, and do not represent its actual structure as a product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

In order to solve the technical problem of poor sealing performance of the battery box shell in the prior art, the utility model provides a battery box shell, which can ensure consistent sealing at the peripheral joints of the battery box shell, thereby ensuring The sealing performance of the whole battery box.

Fig. 1 is a schematic structural view of the separated state of the battery case shell of the present invention. Fig. 4 is a partial cross-sectional view of the combined state of the battery case shell of the present invention. As shown in Figures 1 and 4, in one embodiment, a battery box casing 1 includes:

an upper case 10 having protruding ribs 11 extending along the periphery of the upper case 10; and

The lower casing 20, the lower casing 20 has a groove 21 extending along the periphery of the lower casing 20, the groove 21 is located on the outer surface of the lower casing 20, and its opening direction faces the upper casing 10, The protruding rib 11 extends toward the groove 21 and is accommodated in the groove 21 .

Wherein, as can be clearly shown in FIG. 4 , the groove 21 is filled with a sealant 22 , and the protruding ribs 11 extend into the sealant 22 .

In this embodiment, a groove 21 and a protruding rib 11 are provided at the flange where the upper shell 10 and the lower shell 20 are joined together, that is, at the periphery of the upper shell 10 and the periphery of the lower shell 20. Because the groove 21 is arranged on the outer surface of the lower casing 20, the groove 21 and the protruding rib 11 form a mutually cooperative sealing structure from the outside of the upper casing 10 and the lower casing 20 to prevent dust or water etc. into the inside of the battery box housing 1. The multi-layer winding formed by the side walls of the groove 21 and the protruding ribs 11 can effectively prevent dust or water from entering the interior of the battery box casing 1, and the sealant 22 filled in the groove 21 can be further filled. The gap between the groove 21 and the protruding rib 11 ensures the sealing performance of the sealing structure, so that the sealing of the battery box can reach IP67 or higher. According to the chemical properties of the sealant 22, it can play the role of fixing the relative position between the groove 21 and the protruding rib 11 after curing, so as to firmly combine the spit groove 21 and the protruding rib 11, thereby realizing A firm connection between the upper case 10 and the lower case 20 .

As can be seen in Figure 1, since the groove 21 and the protruding rib 11 in this embodiment all extend along the upper casing 10 and the lower casing 20, that is, at the entire joint flange of the battery box casing 1 Both can achieve consistent sealing through the cooperation of the grooves 21 and the protruding ribs 11, without the need for additional fasteners such as bolts to be closed.

When assembling the battery box casing 1 of this embodiment, first, as shown in FIG. into the sealant 22, so that as shown in Figure 4, the sealant 22 fills the gap between the protruding ribs 11 and the groove 21, after the sealant 22 is cured, as shown in Figure 2, the protrusions of the upper housing 10 The ribs 11 are inserted into the grooves 21 of the lower case 20 , and the upper case 10 and the lower case 20 are hermetically connected together by fixing the sealant 22 .

Preferably, when the protruding rib 11 of the upper housing 10 is inserted into the sealant 22, the height of the sealant 22 in the groove 21 will be raised. For the purpose of appearance and sealing, the sealant filled in the groove 21 The volume of 22 cannot make the sealant 22 overflow out of the groove 21 , then the volume of the sealant 22 should be less than or equal to the difference between the inner volume of the groove 21 and the volume of the protruding rib 11 . Wherein, the volume of the protruding rib 11 is the volume extending into the groove 21 . In this way, when the upper case 10 and the lower case 20 are mated together, the upper case 10 will not be lifted by the sealant 22 , so that there will be no fitting gap between the upper case 10 and the lower case 20 .

Further, as shown in FIG. 4 , the upper case 10 further includes a horizontal portion 12 extending horizontally outward from the periphery of the upper case 10 , that is, from the root of the protruding rib 11 ,

The groove 21 has an inner side wall 21a and an outer side wall 21b, and the horizontal part 12 is attached to the upper edge of the outer side wall 21b to close the sealing structure formed by the groove 21 and the protruding rib 11 at the outermost side of the groove 21 to improve the sealing performance .

Preferably, as shown in Figure 1 and Figure 5, the width of the protruding rib 11 is smaller than the width of the groove 21,

The battery case housing 1 further includes:

the first protrusions 23a, the first protrusions 23a are provided at intervals on the inner side wall 21a; and

The second protrusions 23b, the second protrusions 23b are arranged at intervals on the outer side wall 21b, and the protruding ribs 11 are clamped between the first protrusions 23a and the second protrusions 23b, so as to realize the connection between the upper shell 10 and the lower shell 20 Rapid positioning ensures that the upper case 10 and the lower case 20 will not be dislocated, thereby avoiding the impact on the airtightness and appearance of the battery box case 1 due to installation errors.

Preferably, as shown in FIG. 1 , the first protrusions 23 a and the second protrusions 23 b are arranged at intervals.

In yet another embodiment as shown in FIG. 6 , the battery box housing 1 further includes:

The strap 30 binds the upper casing 10 and the lower casing 20 together.

When the sealant 22 is not fully cured, because there is elastic foam in the battery module installed in the battery box shell 1, it is necessary to apply a sealant facing the lower shell 20 on the upper shell 10 when the upper shell 10 is fastened. Therefore, the strap 30 can provide a continuous pressing force for the upper case 10 during the curing of the sealant 22, and provide a constant pressing force for the upper case 10 and the lower case 20 during the use of the battery box case 1. Stable binding force.

In another embodiment, the battery box casing 1 in the above embodiments can be applied in a car for loading battery modules. Of course, how to install the battery box casing 1 in the car is not the key point of the present invention. Those skilled in the art can implement the installation of the battery box casing 1 in the car in any way, which will not be repeated here.

Herein, "one" does not mean limiting the number of relevant parts of the present invention to "only one", and "one" does not mean excluding the situation that the number of relevant parts of the present invention is "more than one".

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and are not used to limit the protection scope of the present utility model. Embodiments or changes, such as combination, division or repetition of features, should be included in the protection scope of the present utility model.

Claims (7)

1. A battery box housing (1), characterized in that it comprises an upper case (10), said upper case (10) having protruding ribs (11) extending along the periphery of the upper case (10); and A lower casing (20), the lower casing (20) has a groove (21) extending along the periphery of the lower casing (20), the groove (21) is located in the lower casing (20) On the outer surface of the groove (21), the opening of the groove (21) faces the upper casing (10), the protruding rib (11) extends toward the groove (21), and is accommodated in the groove In (21), Wherein, the groove (21) is filled with sealant (22), and the protruding ribs (11) extend into the sealant (22). 2. The battery box casing (1) according to claim 1, characterized in that, the volume of the sealant (22) is less than or equal to the inner volume of the groove (21) and the protruding rib (11) ) volume difference. 3. The battery box casing (1) according to claim 1, characterized in that, the upper casing (10) further comprises a horizontal portion (12) extending horizontally outward from the periphery of the upper casing (10) ), The groove (21) has an inner side wall (21a) and an outer side wall (21b), and the horizontal portion (12) is attached to the upper edge of the outer side wall (21b). 4. The battery box casing (1) according to claim 3, characterized in that, the width of the protruding rib (11) is smaller than the width of the groove (21), The battery box casing (1) further includes: first protrusions (23a), the first protrusions (23a) being spaced apart on the inner sidewall (21a); and The second protrusions (23b), the second protrusions (23b) are arranged at intervals on the outer wall (21b), and the protruding ribs (11) are clamped between the first protrusions (23a) and the second protrusions between (23b). 5. The battery box casing (1) according to claim 4, characterized in that, the first protrusions (23a) and the second protrusions (23b) are arranged at intervals. 6. The battery box casing (1) according to claim 1, further comprising: A strap (30), the strap (30) binds the upper shell (10) and the lower shell (20) together. 7. An automobile, characterized by comprising: the battery box casing (1) according to claims 1-6.