Power battery aluminum shell

Abstract

The utility model provides a power battery aluminum shell, which comprises an aluminum shell body, a top cover, a rubber step frame and a lengthened bolt, a step frame groove is arranged on the edge of the upper end inside the aluminum shell body, the rubber step frame is fixed on the inner side of the step frame groove through epoxy resin glue, and the top cover is clamped at the upper end inside the aluminum shell body and is horizontally lapped on the upper side of the rubber step frame. Bolt groove holes are formed between the left side and the right side of the front end of the top cover and the left side and the right side of the front end of the aluminum shell in a penetrating mode, two second heat dissipation reducing grooves are horizontally formed in the upper end of the top cover, and a plurality of third heat dissipation reducing grooves are formed in the front end and the rear end of the aluminum shell from left to right. According to the aluminum shell structure, the problems that an original device only uses a limiting structure to install the top cover and the shell, and the installation sealing performance and the firmness degree are ordinary are solved, the aluminum shell structure is good in installation effect, high in sealing degree and light in overall weight, and it can be guaranteed that the installation effect between the top cover and the aluminum shell is good.

Description

Technical Field

[0001] The utility model relates to an aluminum shell for a power battery, belonging to the technical field of battery equipment. Background Technique

[0002] Power battery enterprises are booming, and the daily output of batteries is increasing. Improving the energy density of batteries and ensuring certain competitiveness in the market are of great concern to each manufacturer. The energy density of a single cell mainly starts from two aspects. One is to improve the capacity of raw materials, the other is to reduce the weight of structural parts, or to improve the space utilization rate. The side of the traditional aluminum shell is thicker than the large surface, which is to prevent the top cover from sinking when it is buckled with the top cover.

[0003] Publication No.: CN212907964U mentions an aluminum shell for a power battery. Since a limiting structure is provided on the side of the aluminum shell, the use effect is the same as that of the traditional aluminum shell, which can ensure that the top cover will not sink during the assembly process with the aluminum shell. Compared with the traditional aluminum shell, it is lighter in weight and higher in internal space utilization rate, improving the overall energy density of the battery and increasing the utilization rate of the internal space of the battery cell. However, this device simply installs the top cover and the shell through the limiting structure, and its installation sealing performance and firmness are both average. Now there is an urgent need for an aluminum shell for a power battery to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an aluminum shell for a power battery to solve the problems put forward in the above background technology. The utility model designs an aluminum shell structure with good installation effect, high sealing degree and light overall weight, which can ensure better installation effect between the top cover and the aluminum shell.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions: an aluminum shell for a power battery, including an aluminum shell, a top cover, a rubber step frame and extended bolts. A step frame groove is opened at the upper edge of the inner part of the aluminum shell, and a rubber step frame is fixed inside the step frame groove through epoxy resin glue. The top cover is clamped inside the upper end of the aluminum shell and horizontally placed on the upper side of the rubber step frame. Bolt slots are respectively opened through the left and right sides of the front end of the top cover and the left and right sides of the front end of the aluminum shell. A plurality of extended bolts are provided. Two second heat dissipation and weight reduction grooves are horizontally opened on the upper end of the top cover. A plurality of third heat dissipation and weight reduction grooves are opened from left to right at the front and rear ends of the aluminum shell.

[0006] Furthermore, electrode heads are respectively installed through the left and right sides of the upper end of the top cover.

[0007] Furthermore, a plurality of the extended bolts are respectively screwed at the front and rear ends of the two bolt slots through the thread principle.

[0008] Further, a plurality of first heat dissipation relief grooves are equidistantly arranged between the two second heat dissipation relief grooves.

[0009] Further, a plurality of ventilation holes are penetratingly arranged between a plurality of adjacent third heat dissipation relief grooves.

[0010] Further, a plurality of fourth heat dissipation relief grooves are arranged on both the left and right sides of the aluminum shell.

[0011] Beneficial effects of the present utility model: A kind of aluminum shell for power battery of the present utility model. Because the present utility model adds a stepped frame groove, a rubber stepped frame, an extended bolt, a first heat dissipation relief groove, a second heat dissipation relief groove, a third heat dissipation relief groove, a ventilation hole and a fourth heat dissipation relief groove. Through our design improvement and actual use, it shows that the device has good practicability, designs an aluminum shell structure with good installation effect, high sealing degree and light overall weight, can ensure better installation effect between the top cover and the aluminum shell, and the overall structure is simple and reasonable, which is convenient for heat dissipation use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an aluminum shell for a power battery of the present utility model;

[0014] Figure 2 It is a sectional schematic diagram of an aluminum shell for a power battery of the present utility model;

[0015] Figure 3 It is for an aluminum shell for a power battery of the present utility model Figure 1 Partial enlarged schematic diagram;

[0016] In the figure: 1 - aluminum shell, 2 - top cover, 3 - electrode head, 4 - stepped frame groove, 5 - rubber stepped frame, 6 - bolt slot hole, 7 - extended bolt, 8 - first heat dissipation relief groove, 9 - second heat dissipation relief groove, 10 - third heat dissipation relief groove, 11 - ventilation hole, 12 - fourth heat dissipation relief groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a power battery aluminum shell, including an aluminum shell body 1, a top cover 2, a rubber step frame 5 and extended bolts 7. A step frame groove 4 is opened at the upper edge of the inner part of the aluminum shell body 1. The rubber step frame 5 is fixed inside the step frame groove 4 by epoxy resin glue. The top cover 2 is clamped inside the upper end of the aluminum shell body 1 and horizontally placed on the upper side of the rubber step frame 5. Bolt slot holes 6 are respectively penetrated and opened between the left and right sides of the front end of the top cover 2 and the left and right sides of the front end of the aluminum shell body 1. A plurality of extended bolts 7 are provided. Two second heat dissipation and weight reduction grooves 9 are horizontally opened at the upper end of the top cover 2. A plurality of third heat dissipation and weight reduction grooves 10 are respectively opened from left to right at the front and rear ends of the aluminum shell body 1. This design solves the problem that the original device installs the top cover and the shell only by a limiting structure, and the installation sealing performance and firmness are both average.

[0019] As the first embodiment of the present utility model: electrode heads 3 are respectively penetrated and installed at the left and right sides of the upper end of the top cover 2. A plurality of extended bolts 7 are respectively screwed at the front and rear ends of the two bolt slot holes 6 through the thread principle. By adding a plurality of extended bolts 7, when the top cover 2 is clamped inside the upper end of the aluminum shell body 1 and horizontally placed on the upper side of the rubber step frame 5, it can be fixed, so that the top cover 2 and the aluminum shell body 1 will not separate.

[0020] A plurality of first heat dissipation and weight reduction grooves 8 are equidistantly opened between the two second heat dissipation and weight reduction grooves 9. By adding the two second heat dissipation and weight reduction grooves 9, the weight of the top cover 2 can be reduced, and the same is true for the opening of the plurality of first heat dissipation and weight reduction grooves 8. At the same time, the contact area between the upper end of the top cover 2 and the outside is increased, achieving a faster heat dissipation effect. A plurality of ventilation holes 11 are respectively penetrated and opened between a plurality of adjacent third heat dissipation and weight reduction grooves 10. A plurality of fourth heat dissipation and weight reduction grooves 12 are respectively opened at the left and right sides of the aluminum shell body 1. By adding the plurality of third heat dissipation and weight reduction grooves 10 and the plurality of fourth heat dissipation and weight reduction grooves 12, the total weight of the aluminum shell body 1 itself can be reduced, and at the same time, the contact area between the surface of the aluminum shell body 1 and the outside is increased, enabling it to cooperate with the plurality of ventilation holes 11 to dissipate heat faster.

[0021] As the second embodiment of the present utility model: the top cover 2 is clamped inside the upper end of the aluminum shell body 1 and horizontally placed on the upper side of the rubber step frame 5. Then, a plurality of extended bolts 7 are respectively screwed at the front and rear ends of the two bolt slot holes 6 through the thread principle, and the installation and fixation between the top cover 2 and the aluminum shell body 1 can be completed. By adding the two second heat dissipation and weight reduction grooves 9 and the plurality of first heat dissipation and weight reduction grooves 8, the weight of the top cover 2 can be reduced, and the contact area between the upper end of the top cover 2 and the outside can also be increased, achieving a faster heat dissipation effect. By adding the plurality of third heat dissipation and weight reduction grooves 10 and the plurality of fourth heat dissipation and weight reduction grooves 12, the total weight of the aluminum shell body 1 itself can be reduced, and at the same time, the contact area between the surface of the aluminum shell body 1 and the outside is increased. After ventilation in the plurality of ventilation holes 11, it will quickly take away the heat on the surface of the aluminum shell body 1, achieving the purpose of rapid heat dissipation.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in whatever aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0023] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power battery aluminum shell, comprising an aluminum shell (1), a top cover (2), a rubber step frame (5) and an extension bolt (7), characterized in that: The upper edge of the inner part of the aluminum shell (1) is provided with a step frame groove (4), the inner side of the step frame groove (4) is fixed with a rubber step frame (5) by epoxy resin glue, the top cover (2) is clamped at the upper end of the inner part of the aluminum shell (1), and horizontally overlapped on the upper side of the rubber step frame (5), bolt slot holes (6) are penetrated between the left and right sides of the front end of the top cover (2) and the left and right sides of the front end of the aluminum shell (1), a plurality of the lengthening bolts (7) are provided, two second heat dissipation reduction grooves (9) are horizontally provided at the upper end of the top cover (2), and a plurality of third heat dissipation reduction grooves (10) are provided at the front and rear ends of the aluminum shell (1) from left to right.

2. A power battery aluminum shell according to claim 1, characterized in that: Electrode heads (3) are installed through both left and right sides of the upper end of the top cover (2).

3. The power battery aluminum shell according to claim 1, characterized in that: The plurality of lengthened bolts (7) are respectively screwed into the front and rear ends of the two bolt slot holes (6) through the principle of thread.

4. The power battery aluminum shell according to claim 1, characterized in that: A plurality of first heat dissipation reduction grooves (8) are arranged at equal distances between the two second heat dissipation reduction grooves (9).

5. The power battery aluminum shell according to claim 1, characterized in that: A plurality of ventilation holes (11) are provided between a plurality of adjacent third heat dissipation reduction grooves (10).

6. The power battery aluminum shell according to claim 1, characterized in that: A plurality of fourth heat dissipation reduction grooves (12) are provided on both the left and right sides of the aluminum housing (1).

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