A battery pack housing

Abstract

The utility model relates to battery technology field, concretely relates to a battery package shell. The utility model provides a battery package shell, including casing and lower support, lower support and casing integral molding are provided with a plurality of electric core cover, and the electric core cover is inside seted up electric core cavity, and the electric core is fixed in the electric core cavity. The utility model provides a battery package shell, cancels independent electric core lower support and its connecting structure with casing, is convenient to install and dismount, saves time and labour, and the small size of spare part reduces production cost, can better promote space utilization and energy density, realizes structural strength and installation function high degree of integration.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery pack casing. Background Technology

[0002] Currently, the cylindrical battery packs (injection molded) known in existing technologies consist of a casing, CCS (cell-cell assembly) modules, an upper bracket, a lower bracket, connectors, and electrical components. In existing injection molding processes, the battery pack casing requires an additional lower bracket combined with the upper bracket to assemble multiple individual cells into a module. The relative positions of the battery casing and the module are then maintained by connecting structures, limiting space utilization and energy density improvement. The aforementioned modular battery pack structure requires numerous assembly steps, resulting in high difficulty and cost in maintaining consistency. Utility Model Content

[0003] To address the issues of existing split battery pack structures requiring numerous assembly steps, high difficulty and cost in consistency management, limited space utilization and energy density improvement, and complex assembly technology, this utility model provides a battery pack shell that eliminates the independent cell support bracket and its connection structure to the shell, facilitating installation and disassembly, saving time and effort, reducing production costs due to smaller component size, and improving space utilization and energy density, thus achieving a high degree of integration between structural strength and installation functionality.

[0004] This utility model provides a battery pack shell, including a shell and a lower bracket. The lower bracket is integrally formed with the shell, and the lower bracket is provided with multiple cell sleeves. A cell cavity is opened in the cell sleeve, and the cell is fixed in the cell cavity.

[0005] Furthermore, the negative electrode side of the battery cell is fitted with the battery cell cavity with a gap, and a glue storage groove is provided at the bottom of the battery cell cavity for storing glue to fix the battery cell.

[0006] Furthermore, the housing includes a first side plate and a second side plate arranged opposite to and parallel to each other, and a third side plate. The third side plate is connected to the ends of the first side plate and the second side plate on the same side, and the third side plate is perpendicular to both the first side plate and the second side plate. The lower bracket is provided with multiple rows of battery cell sleeves that abut against each other. The multiple rows of battery cell sleeves are arranged in parallel and are disposed between the first side plate and the second side plate. Along the direction from the first side plate to the second side plate, the edge of a single row of battery cell sleeves facing the first side plate abuts against the inner wall of the first side plate, and the edge of a single row of battery cell sleeves facing the second side plate abuts against the inner wall of the second side plate. Along the direction perpendicular to the first side plate to the second side plate, the battery cells facing the third side plate abut against the inner wall of the third side plate.

[0007] Furthermore, the battery sleeve is cylindrical, and along the direction perpendicular to the first side plate toward the second side plate, adjacent battery sleeves abut against each other, and a single row of battery sleeves is staggered with its adjacent row of battery sleeves and abuts against each other tangentially.

[0008] Furthermore, along the direction perpendicular to the first side plate toward the second side plate, a plug-in mounting hole is provided on the side of the housing facing away from the third side plate.

[0009] Furthermore, along the direction perpendicular to the first side plate toward the second side plate, the side of the housing facing away from the third side plate is also provided with a packaging slot for encapsulating the front and rear battery pack housings.

[0010] The beneficial effects of this utility model are as follows: This invention eliminates the need for a separate lower support bracket while still fulfilling the function of fixing individual battery cells, thus reducing structural space and achieving higher space utilization and energy density. The design eliminates the assembly process from module to battery pack, realizing the "Cell to Pack" concept to a high degree. Furthermore, the integrated battery pack casing and lower support bracket have lower production costs than producing the casing and lower support separately, improving production efficiency and significantly saving on production, warehousing, and manufacturing costs. Attached Figure Description

[0011] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 3 This is a structural schematic diagram of one embodiment of the lower support; Figure 4 A schematic diagram of the structure of one embodiment of the housing; Key reference numerals: 1-Housing, 2-Lower bracket, 1.1-Plug-in mounting hole, 1.2-Encapsulation slot, 2.1-Cell cavity, 2.2-Glue storage slot. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0014] like Figure 1 and Figure 2 As shown, one embodiment of this utility model provides a battery pack casing, including a shell 1 and a lower support 2. The lower support 2 is integrally formed with the shell 1, ensuring structural strength while compressing structural space to increase energy density. The lower support 2 is provided with multiple cell sleeves, and cell cavities are formed inside the cell sleeves, with the cells fixed in the cell cavities. The negative electrode side of the cell is clearance-fitted with the cell cavity, and an adhesive storage groove 2.2 is provided at the bottom of the cell cavity for storing adhesive to fix the cell, so as to maintain the relative position of the bottom of the individual cell and the battery pack shell 1 by structural adhesive.

[0015] like Figures 1-3 As shown, the housing 1 includes a first side plate and a second side plate arranged opposite to and parallel to each other, and a third side plate. The third side plate is connected to the ends of the first side plate and the second side plate on the same side, and the third side plate is perpendicular to both the first side plate and the second side plate. The lower bracket 2 is provided with multiple rows of battery cell sleeves that abut against each other. The multiple rows of battery cell sleeves are arranged in parallel and are disposed between the first side plate and the second side plate. Along the direction from the first side plate to the second side plate, the edge of a single row of battery cell sleeves facing the first side plate abuts against the inner wall of the first side plate, and the edge of a single row of battery cell sleeves facing the second side plate abuts against the inner wall of the second side plate. Along the direction perpendicular to the first side plate to the second side plate, the battery cells facing the third side plate abut against the inner wall of the third side plate. This design is applied to cylindrical batteries. The battery sleeve is cylindrical, extending perpendicularly from the first side plate towards the second side plate. Adjacent battery sleeves abut against each other. A single row of battery sleeves is staggered with its adjacent row, abutting and tangentially touching each other. The cylindrical cells are arranged in a staggered manner. The battery pack housing 1 is integrally formed from the side of the battery pack shell 1 and the cylindrical cell lower support 2. During battery pack assembly, the cells can be directly placed and fixed inside the cell cavity of the battery pack shell. The negative electrode side of each individual cell mates with the inner side of the cell lower support 2, enabling a direct process from individual cells to the battery pack. In this embodiment, the cell arrangement results in a higher space utilization rate and energy density for the battery pack.

[0016] like Figure 4 As shown, along the direction perpendicular to the first side plate toward the second side plate, a plug-in mounting hole 1.1 is provided on the side of the housing 1 facing away from the third side plate. Along the direction perpendicular to the first side plate toward the second side plate, a packaging slot 1.2 for encapsulating the front and rear battery pack housing 1 is also provided on the side of the housing 1 facing away from the third side plate.

[0017] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention.

Claims

1. A battery pack casing, characterized in that, It includes a housing and a lower bracket. The lower bracket is integrally formed with the housing. The lower bracket is provided with multiple cell sleeves. The cell sleeves have cell cavities, and the cells are fixed in the cell cavities.

2. The battery pack casing as described in claim 1, characterized in that, The negative electrode side of the battery cell is fitted with the battery cell cavity with a clearance, and a glue storage groove is provided at the bottom of the battery cell cavity for storing glue to fix the battery cell.

3. A battery pack casing as described in claim 1, characterized in that, The housing includes a first side plate and a second side plate arranged opposite to and parallel to each other, and a third side plate. The third side plate is connected to the ends of the first side plate and the second side plate on the same side, and the third side plate is perpendicular to both the first side plate and the second side plate. The lower bracket is provided with multiple rows of battery cell sleeves that abut against each other. The multiple rows of battery cell sleeves are arranged in parallel and are disposed between the first side plate and the second side plate. Along the direction from the first side plate to the second side plate, the edge of a single row of battery cell sleeves facing the first side plate abuts against the inner wall of the first side plate, and the edge of a single row of battery cell sleeves facing the second side plate abuts against the inner wall of the second side plate. Along the direction perpendicular to the first side plate to the second side plate, the battery cells facing the third side plate abut against the inner wall of the third side plate.

4. A battery pack casing as described in claim 3, characterized in that, The battery sleeve is cylindrical, and along the direction perpendicular to the first side plate toward the second side plate, adjacent battery sleeves abut against each other. A single row of battery sleeves is staggered with its adjacent row of battery sleeves and abuts against each other tangentially.

5. A battery pack casing as described in claim 3, characterized in that, Insertion mounting holes are provided on the side of the housing facing away from the third side plate, in a direction perpendicular to the first side plate toward the second side plate.

6. A battery pack casing as described in claim 3, characterized in that, Along the direction perpendicular to the first side plate toward the second side plate, the side of the housing facing away from the third side plate is also provided with a packaging slot for encapsulating the front and rear battery pack housings.

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