Impact-resistant nickel-hydrogen battery pack

Abstract

The utility model discloses an impact-resistant nickel-metal hydride battery pack, which relates to the technical field of battery protection and comprises a battery shell with a built-in nickel-metal hydride battery component, and corner columns are fixedly connected to four corners of the battery shell. Three hollow cross rods are fixedly connected between the two corner upright posts arranged along the length extension direction of the battery shell, and the vertical sections of the three hollow cross rods are three vertexes of an isosceles triangle; the outer part of the hollow cross rod is connected with a first anti-impact structure, and the inner part of the hollow cross rod is connected with a second anti-impact structure; and the first impact-resistant structure and the second impact-resistant structure are used for improving the impact-resistant strength of the battery shell. According to the utility model, the first anti-impact structure and the second anti-impact structure are arranged, so that the impact force can be effectively dispersed, and the anti-impact performance of the battery shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection, in particular to an impact-resistant nickel-hydrogen battery pack. Background Art

[0002] The positive active material of the nickel-hydrogen battery is Ni(OH)2 (called NiO electrode), the negative active material is metal hydride, also called hydrogen storage alloy (the electrode is called hydrogen storage electrode), and the electrolyte is 6mol / L potassium hydroxide solution. When the nickel-hydrogen battery is used as the energy source of new energy batteries, if the side of the vehicle body is hit, the impact force will enter the battery shell along the vehicle body. Since the negative electrode of the nickel-hydrogen battery is very active, it will spontaneously combust or even explode in a short time if it is not effectively protected.

[0003] The existing side collision of the vehicle body is transmitted to the battery casing through the energy absorption and shock absorption of the vehicle body and frame. In order to ensure the heat dissipation performance of the battery casing, it is inconvenient to add energy absorption and buffer materials to the battery casing. Therefore, there is room for further improvement in the impact resistance of the battery casing. Utility Model Content

[0004] The purpose of the utility model is to provide an impact-resistant nickel-hydrogen battery pack in order to solve the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-resistant nickel-hydrogen battery pack, comprising a battery shell with a built-in nickel-hydrogen battery assembly, wherein corner columns are fixedly connected at the four corners of the battery shell, and three hollow cross bars are fixedly connected between two corner columns arranged along the length extension direction of the battery shell; the outside of the hollow cross bar is connected to a first impact-resistant structure, and the inside of the hollow cross bar is connected to a second impact-resistant structure; the first impact-resistant structure and the second impact-resistant structure are used to improve the impact resistance of the battery shell.

[0006] As a further solution of the utility model: the first impact-resistant structure includes: a vertical rod, an oblique rod, a connecting rod and a diagonal rod; the vertical rod is connected between the two hollow cross rods located in the same vertical direction, the two oblique rods are symmetrically arranged, the two oblique rods are connected between the two adjacent hollow cross rods, and the two oblique rods and one vertical rod form an isosceles triangle.

[0007] As a further solution of the utility model: multiple connecting rods are horizontally connected between the vertical rods and the oblique rods, and between one hollow horizontal rod and the vertical rod from top to bottom, and the diagonal rods are connected to the diagonals of two adjacent connecting rods; multiple triangles are formed between the vertical rods, oblique rods, connecting rods, and diagonal rods.

[0008] As a further solution of the utility model: the second impact-resistant structure includes: a fixed frame, a fixed rod, a strip rod and a stabilizing rod; a plurality of the fixed frames are equidistantly distributed in the hollow cavity of the hollow cross bar, the fixed frame is a hollow prism structure, and the fixed rod is vertically connected between the upper and lower end points on the inner side of the fixed frame; two strip rods are connected between two adjacent hollow cross bars, and the two strip rods are distributed between the highest point and the lowest point of the fixed frame, and a stabilizing rod in an "X" structure is fixedly connected between the two diagonals of the upper and lower strip rods.

[0009] As a further solution of the utility model: the upper and lower adjacent sides of the fixed frame 8 and the fixed rod 9 form an isosceles triangle; the upper and lower two strip rods 10 and the stabilizing rod 11 form two isosceles triangles distributed vertically, and the two left and right adjacent fixed rods 9 and the stabilizing rod 11 form two left and right isosceles triangles distributed.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] By providing the first impact-resistant structure and the second impact-resistant structure, the impact force can be effectively dispersed and the impact resistance of the battery casing can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the first impact-resistant structure of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the second impact-resistant structure of the utility model.

[0015] In the figure: 1. battery housing; 2. corner columns; 3. hollow horizontal bar; 4. vertical bar; 5. diagonal bar; 6. connecting bar; 7. diagonal bar; 8. fixing frame; 9. fixing bar; 10. strip bar; 11. stabilizing bar. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 to Figure 3In an embodiment of the utility model, an impact-resistant nickel-hydrogen battery pack includes a battery shell 1 with a built-in nickel-hydrogen battery assembly, and corner columns 2 are fixedly connected at the four corners of the battery shell 1. Three hollow cross bars 3 are fixedly connected between two corner columns 2 arranged along the length extension direction of the battery shell 1, and the vertical sections of the three hollow cross bars 3 are three vertices of an isosceles triangle.

[0018] The outside of the hollow cross bar 3 is connected to a first impact-resistant structure, and the inside of the hollow cross bar 3 is connected to a second impact-resistant structure.

[0019] The first impact-resistant structure and the second impact-resistant structure are used to improve the impact resistance of the battery casing.

[0020] In this embodiment: when the two sides of the vehicle body are impacted, the impact force is transmitted to the battery shell 1 built into the module shell through the vehicle body and the shell of the entire battery module. Since the vehicle body is subjected to lateral force, the transmitted impact force will contact the first impact-resistant structure and the second impact-resistant structure. Since the first impact-resistant structure and the second impact-resistant structure have multiple triangular structures inside, the impact resistance of the battery shell 1 can be further improved. It should be noted that the first impact-resistant structure and the second impact-resistant structure only improve the impact resistance of the battery shell, rather than avoiding the impact.

[0021] Please refer to Figure 2 The first impact-resistant structure includes: a vertical rod 4, an oblique rod 5, a connecting rod 6 and a diagonal rod 7; the vertical rod 4 is connected between two hollow cross rods 3 located in the same vertical direction, the two oblique rods 5 are symmetrically arranged, the two oblique rods 5 are connected between two adjacent hollow cross rods 3, and the two oblique rods 5 and one vertical rod 4 form an isosceles triangle; a plurality of connecting rods 6 are laterally connected between the vertical rod 4 and the oblique rod 5, and between one hollow cross rod 3 and the vertical rod 4 from top to bottom, and the diagonal rod 7 is connected to the diagonals of two adjacent connecting rods 6; a plurality of triangles are formed between the vertical rod 4, the oblique rod 5, the connecting rod 6 and the diagonal rod 7.

[0022] In this embodiment: first, the impact force will be transmitted to the vertical rod 4, and the force on the vertical rod 4 will be dispersed through the diagonal rod 7, the connecting rod 6, and the oblique rod 5. After the impact force is dispersed, the impact resistance of the battery housing 1 can be further improved.

[0023] Please refer to Figure 3The second impact-resistant structure includes: a fixed frame 8, a fixed rod 9, a strip rod 10 and a stabilizing rod 11; a plurality of fixed frames 8 are equidistantly distributed in the hollow cavity of the hollow cross bar 3, the fixed frame 8 is a hollow prism structure, and the fixed rod 9 is vertically connected between the upper and lower end points of the inner side of the fixed frame 8; two strip rods 10 are connected between two adjacent hollow cross bars 3, and the two strip rods 10 are distributed between the highest point and the lowest point of the fixed frame 8, and a stabilizing rod 11 in an "X" structure is fixedly connected between the two diagonals of the upper and lower strip rods 10.

[0024] In this embodiment: the non-separation on the vertical rod 4 will be dispersed to the inside of the three hollow cross rods 3, and the hollow cross rod 3 will transfer the impact force to the second impact-resistant structure. First, the impact force will be transferred to the fixed frame 8. After the fixed frame 8 is subjected to force, the fixed rod 9, the strip rod 10 and the stabilizing rod 11 connected to the fixed frame 8, at this time, the impact force is further dispersed, ensuring the stability of the hollow cross rod 3 under the impact force, thereby further improving the stability of the battery casing.

[0025] Please refer to Figure 3 The upper and lower adjacent sides of the fixed frame 8 and the fixed rod 9 form an isosceles triangle; the upper and lower strip rods 10 and the stabilizing rod 11 form two isosceles triangles distributed vertically, and the two left and right adjacent fixed rods 9 and the stabilizing rod 11 form two left and right isosceles triangles distributed.

[0026] In this embodiment: after the three vertices of the triangle are fixed, the lengths of the three sides remain unchanged. When a force is applied to one point, the force can be quickly dispersed, thereby ensuring the impact resistance.

[0027] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An impact-resistant nickel-hydrogen battery pack, comprising a battery housing (1) with a built-in nickel-hydrogen battery assembly, characterized in that: Corner columns (2) are fixedly connected at the four corners of the battery housing (1); three hollow cross bars (3) are fixedly connected between two of the corner columns (2) arranged along the length extension direction of the battery housing (1); the outside of the hollow cross bar (3) is connected to a first impact-resistant structure, and the inside of the hollow cross bar (3) is connected to a second impact-resistant structure; the first impact-resistant structure and the second impact-resistant structure are used to improve the impact resistance of the battery housing.

2. The impact-resistant nickel-hydrogen battery pack according to claim 1, characterized in that: The first impact-resistant structure comprises: a vertical rod (4), an oblique rod (5), a connecting rod (6) and a diagonal rod (7); the vertical rod (4) is connected between two hollow cross rods (3) located in the same vertical direction, the two oblique rods (5) are symmetrically arranged, the two oblique rods (5) are connected between two adjacent hollow cross rods (3), and the two oblique rods (5) and one vertical rod (4) form an isosceles triangle.

3. The impact-resistant nickel-hydrogen battery pack according to claim 2, characterized in that: A plurality of connecting rods (6) are laterally connected between the vertical rod (4) and the oblique rod (5), and between one of the hollow cross rods (3) and the vertical rod (4) from top to bottom; the diagonal rod (7) is connected to the diagonal corners of two adjacent connecting rods (6); and a plurality of triangles are formed between the vertical rod (4), the oblique rod (5), the connecting rod (6), and the diagonal rod (7).

4. The impact-resistant nickel-hydrogen battery pack according to claim 1, characterized in that: The second impact-resistant structure comprises: a fixed frame (8), a fixed rod (9), a strip rod (10) and a stabilizing rod (11); a plurality of the fixed frames (8) are equidistantly distributed in the hollow cavity of the hollow cross bar (3); the fixed frame (8) is in the form of a hollow prism-shaped structure; the fixed rod (9) is vertically connected between the upper and lower end points of the inner side of the fixed frame (8); two strip rods (10) are connected between two adjacent hollow cross bars (3); the two strip rods (10) are distributed between the highest point and the lowest point of the fixed frame (8); and a stabilizing rod (11) in an "X" structure is fixedly connected between two diagonals of the upper and lower strip rods (10).

5. The impact-resistant nickel-hydrogen battery pack according to claim 4, characterized in that: The upper and lower adjacent sides of the fixing frame (8) and the fixing rod (9) form an isosceles triangle; the upper and lower two strip rods (10) and the stabilizing rod (11) form two isosceles triangles distributed vertically, and the two left and right adjacent fixing rods (9) and the stabilizing rod (11) form two left and right isosceles triangles distributed horizontally.

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