Bracket cell hole structure of battery pack

Abstract

The utility model discloses a bracket battery cell hole structure of a battery pack, which comprises a battery cell bracket of the battery pack, and the battery cell bracket is positioned at the axial end of a battery cell so as to support and position the battery cell; a battery cell mounting hole corresponding to the battery cell is formed in the inner side of the battery cell bracket, the inner wall of the battery cell mounting hole is of a large-diameter and small-diameter hole structure formed by connecting a large-diameter inner wall and a small-diameter inner wall through a transition inclined surface inner wall, and the axial end of the battery cell extends into the battery cell mounting hole and is supported and positioned through the large-diameter and small-diameter hole structure. According to the utility model, the large-diameter inner wall enables the battery cell to be in place more easily, and the small-diameter inner wall can clamp the battery cell, so that the whole battery can better resist the damage caused by vibration.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and in particular relates to a bracket core hole structure of a battery pack. Background Art

[0002] For lithium iron phosphate battery packs, the cells are positioned and installed using side brackets. The cells can be mounted on the brackets using various methods, such as hole mounting and clamp mounting. Hole mounting is widely used due to its high assembly efficiency and low cost. However, due to the lack of close contact between the hole and the cell, the hole mounting method can easily damage the cell when subjected to vibration. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a battery pack bracket cell hole structure, wherein the large-diameter inner wall makes it easier to position the cell, and the small-diameter inner wall can clamp the cell, so that the battery as a whole can better resist damage caused by vibration.

[0004] Technical solution: To achieve the above purpose, the utility model provides a battery pack bracket cell hole structure, including a battery pack cell bracket, the battery cell bracket is located at the axial end of the battery cell to support and position the battery cell;

[0005] A cell mounting hole is provided on the inner side of the cell bracket corresponding to the cell. The inner wall of the cell mounting hole is a large-diameter hole structure formed by connecting the large-diameter inner wall and the small-diameter inner wall through a transition inclined inner wall. The axial end of the cell extends into the cell mounting hole and is supported and positioned by the large-diameter hole structure.

[0006] Furthermore, the radial dimension of the large-diameter inner wall is adapted to the radial dimension of the main body of the battery cell so as to guide the battery cell in its installation position.

[0007] Furthermore, the radial dimension of the small-diameter inner wall is between the radial dimensions of the main body of the battery cell and the electrode contact, so as to clamp the installed battery cell.

[0008] Furthermore, the battery cell mounting hole has a baffle located on the outside of the battery cell bracket, and the baffle axially blocks the electrode contacts of the battery cell.

[0009] Furthermore, the baffle has a hollow opening corresponding to the battery cell mounting hole, and the battery cell mounting hole is connected from the inside to the outside of the battery cell bracket through the hollow opening, so that the electrode contacts of the battery cell extending into the battery cell mounting hole are exposed through the hollow opening.

[0010] Furthermore, the baffle and the battery cell support are integrally formed.

[0011] Furthermore, the battery cell bracket includes a left battery cell bracket and a right battery cell bracket located at two axial ends of the battery cell. Battery cell mounting holes are distributed on the left and right battery cell brackets, and each of the battery cell mounting holes has a hole structure with large and small diameters.

[0012] Furthermore, the plurality of cell mounting holes on the same cell holder are arranged in a row in the length direction of the cell holder, and the cell mounting holes arranged in a row have a plurality of rows in the height direction of the cell holder.

[0013] Beneficial effects: The structure of the battery cell mounting hole of the present invention is different from the ordinary hole mounting method in the prior art. Its structure is a large-diameter hole structure composed of a large-diameter inner wall and a small-diameter inner wall connected by a transition slope inner wall. The large-diameter inner wall makes it easier for the battery cell to be positioned, thereby improving the convenience and efficiency of assembly. The small-diameter inner wall can clamp the battery cell, so that the battery as a whole can better resist damage caused by vibration, thereby improving the safety and stability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial enlarged three-dimensional structural diagram of the cell support hole structure of the battery pack in a cut-away state;

[0015] Figure 2 This is a schematic diagram of a partially enlarged side view of the battery pack's cell bracket hole structure in a cutaway state. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 and Figure 2As shown, a battery pack support cell hole structure includes a battery pack cell support 1, which is located at the axial end of the cell to support and position the cell; a cell mounting hole 2 is provided on the inner side of the cell support 1 corresponding to the cell, and the inner wall of the cell mounting hole 2 is a large-diameter hole structure formed by connecting the large-diameter inner wall 3 and the small-diameter inner wall 4 through a transition slope inner wall 5. The axial end of the cell extends into the cell mounting hole 2 and is supported and positioned by the large-diameter hole structure. More specifically, the radial dimension of the large-diameter inner wall 3 is compatible with the radial dimension of the main body of the cell to guide the cell to be installed in place. The radial dimension of the small-diameter inner wall 4 is between the radial dimension of the main body of the cell and the electrode contact to clamp the installed cell. The structure of the battery cell mounting hole 2 of the present invention is different from the ordinary hole mounting method in the prior art. Its structure is a large-diameter hole structure composed of a large-diameter inner wall 3 and a small-diameter inner wall 4 connected by a transition inclined inner wall 5. The large-diameter inner wall 3 makes it easier for the battery cell to be positioned, thereby improving the convenience and efficiency of assembly. The small-diameter inner wall 4 can clamp the battery cell, so that the battery as a whole can better resist damage caused by vibration, thereby improving the safety and stability of the battery pack.

[0018] The battery cell mounting hole 2 has a baffle 6 located on the outside of the battery cell holder 1, and the baffle 6 axially blocks the electrode contacts of the battery cell. In addition, in order to facilitate electrical connection of the battery cell, the baffle 6 has a hollow opening 60 corresponding to the battery cell mounting hole 2. The battery cell mounting hole 2 is connected from the inside to the outside of the battery cell holder 1 through the hollow opening 60, so that the electrode contacts of the battery cell extended into the battery cell mounting hole 2 are exposed through the hollow opening 60. In addition, the setting of the hollow opening 60 also reserves space for the connection of the electrode sheet.

[0019] In order to improve the structural strength of the battery cell holder 1 having the battery cell mounting hole 2 and the baffle 6 , the baffle 6 and the battery cell holder 1 are integrally formed.

[0020] The battery cell bracket 1 includes a left battery cell bracket and a right battery cell bracket located at the two axial ends of the battery cell. Battery cell mounting holes 2 are distributed on the left and right battery cell brackets. Each of the battery cell mounting holes 2 has a large and small diameter hole structure. In a battery pack of the present invention, there are 64 sets of large and small diameter hole structures.

[0021] The plurality of cell mounting holes 2 on the same cell holder 1 are arranged in rows in the length direction of the cell holder 1 , and the cell mounting holes 2 arranged in rows have several rows in the height direction of the cell holder 1 , thereby increasing the installation density of the cells and improving the capacity of the battery pack.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A battery pack support cell hole structure, comprising a battery pack cell support (1), wherein the cell support (1) is located at an axial end of the cell to support and position the cell; Its characteristics are: A cell mounting hole (2) is provided on the inner side of the cell support (1) corresponding to the cell; the inner wall of the cell mounting hole (2) is a large-diameter hole structure formed by connecting a large-diameter inner wall (3) and a small-diameter inner wall (4) via a transitional inclined inner wall (5); the axial end of the cell extends into the cell mounting hole (2) and is supported and positioned by the large-diameter hole structure.

2. The battery pack bracket core hole structure according to claim 1, characterized in that: The radial dimension of the large-diameter inner wall (3) is adapted to the radial dimension of the main body of the battery cell, so as to guide the battery cell to be installed in place.

3. The battery pack bracket core hole structure according to claim 2, characterized in that: The radial dimension of the small-diameter inner wall (4) is between the radial dimensions of the main body of the battery cell and the electrode contact, so as to clamp the installed battery cell.

4. The battery pack bracket core hole structure according to claim 3, characterized in that: The battery cell mounting hole (2) has a baffle (6) located outside the battery cell bracket (1), and the baffle (6) axially blocks the electrode contacts of the battery cell.

5. The battery pack bracket core hole structure according to claim 4, characterized in that: The baffle (6) has a hollow opening (60) corresponding to the battery cell mounting hole (2); the battery cell mounting hole (2) is connected from the inside to the outside of the battery cell bracket (1) through the hollow opening (60), so that the electrode contacts of the battery cell extending into the battery cell mounting hole (2) are exposed through the hollow opening (60).

6. The battery pack bracket core hole structure according to claim 5, characterized in that: The baffle (6) and the battery core bracket (1) are integrally formed.

7. The battery pack bracket cell hole structure according to claim 5, characterized in that: The battery cell bracket (1) comprises a left battery cell bracket and a right battery cell bracket located at two axial ends of the battery cell, and battery cell mounting holes (2) are distributed on the left and right battery cell brackets, and each of the battery cell mounting holes (2) has a hole structure with large and small diameters.

8. The battery pack bracket core hole structure according to claim 7, characterized in that: The plurality of battery cell mounting holes (2) on the same battery cell support (1) are arranged in a row in the length direction of the battery cell support (1), and the battery cell mounting holes (2) arranged in a row have a plurality of rows in the height direction of the battery cell support (1).

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