Anti-extrusion power-assisted bicycle battery structure

Abstract

The utility model discloses an anti-extrusion power-assisted bicycle battery structure which comprises an aluminum barrel and a plurality of battery cells, a penetrating empty groove is formed in the aluminum barrel, a metal support is arranged in the aluminum barrel, the outer portions of the two sides of the metal support abut against the inner wall of the aluminum barrel, and a main auxiliary support and an auxiliary auxiliary support are arranged in the aluminum barrel. The size of the outer side of the metal support is larger than that of the main auxiliary support and the auxiliary auxiliary supports, the size of the inner side of the metal support is larger than that of the outer side of the main auxiliary support, one end of the main auxiliary support abuts against the middle of the metal support, and the outer side of the main auxiliary support abuts against the inner side of the metal support. According to the utility model, the structure is novel, the size of the outer side of the metal bracket is set to be larger than that of the main auxiliary bracket and the auxiliary auxiliary bracket, so that a hierarchical structure is formed, impact force is effectively dispersed and absorbed, and an internal battery cell is protected from being directly extruded.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycle batteries, in particular to an anti-extrusion power-assisted bicycle battery structure. Background Art

[0002] With the rapid development of the electric bicycle market, higher requirements are placed on battery safety and durability. The new European battery certification standard emphasizes the stability of batteries under extreme conditions, especially their anti-extrusion ability.

[0003] However, when the existing battery structure is subjected to external force, it is easy to cause damage to the battery cell or short circuit, thus posing a safety hazard. Utility Model Content

[0004] The utility model provides an anti-extrusion power-assisted bicycle battery structure, which solves the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an anti-extrusion power-assisted bicycle battery structure, comprising an aluminum barrel and a plurality of battery cells, a through-hole groove is opened inside the aluminum barrel, a metal bracket with a roughly I-shaped cross-section is arranged in the groove located in the middle of the aluminum barrel, the outer sides of the I-shaped metal bracket are abutted against the inner wall of the aluminum barrel, and a main auxiliary bracket and a secondary auxiliary bracket for accommodating the battery cells are respectively arranged on both sides of the metal bracket in the aluminum barrel, the outer side size of the metal bracket is larger than the main auxiliary bracket and the secondary auxiliary bracket, the inner side size of the metal bracket is larger than the outer side size of the main auxiliary bracket, and one end of the main auxiliary bracket is abutted against the middle of the metal bracket, the outer side of the main auxiliary bracket is abutted against the inner side of the metal bracket, a first bayonet is provided on each of the secondary auxiliary brackets, and a clamping strip cooperating with the first bayonet is respectively provided on both radial sides of the secondary auxiliary bracket.

[0006] The metal bracket is provided with a second clip that matches the clip strip.

[0007] The main auxiliary bracket is provided with a plurality of waist-shaped holes, and the metal bracket is provided with threaded holes matching the waist-shaped holes. Bolts are provided in the threaded holes, and the threaded ends of the bolts pass through the waist-shaped holes and match the threaded holes.

[0008] An insulating pad is provided between the metal bracket and the main auxiliary bracket.

[0009] The beneficial effects of the utility model are as follows: the device is designed with sufficient thickness in the middle of the metal bracket to withstand the strong extrusion force of the extrusion test, thereby ensuring the stability of the overall structure;

[0010] The battery cells are placed inside the main auxiliary bracket and the auxiliary auxiliary bracket. By setting the outer dimensions of the metal bracket larger than the main auxiliary bracket and the auxiliary auxiliary bracket, a hierarchical structure is formed. When squeezed, the metal bracket bears the pressure first, effectively dispersing and absorbing the impact force, and protecting the internal battery cells from direct squeeze.

[0011] The bolts are fixed to the metal bracket through the waist-shaped holes on the main auxiliary bracket, so that when the metal bracket is squeezed and deformed, it will not have a rigid connection with the main auxiliary bracket, thereby avoiding the main auxiliary bracket from squeezing the battery cell, achieving deformation buffering, and effectively improving the anti-extrusion performance of the battery structure to meet the new European battery certification standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural breakdown diagram of the present utility model.

[0013] Figure 2 It is a cross-sectional view of the present utility model.

[0014] Figure 3 For the utility model Figure 2 A magnified schematic diagram of .

[0015] Figure 4 For the utility model Figure 2 AA direction cross-section diagram.

[0016] Figure 5 For the utility model Figure 2 BB direction cross-section diagram.

[0017] Figure 6 For the utility model Figure 2 CC direction cross-section diagram.

[0018] Numbers in the figure: 1. Aluminum barrel; 2. Metal bracket; 3. Main and auxiliary brackets; 4. Battery cell; 5. Bolt; 6. Insulation pad; 7. Clip; 8. Second clip; 9. Secondary auxiliary bracket; 10. First clip; 11. Waist-shaped hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-6 As shown, an anti-extrusion power-assisted bicycle battery structure includes an aluminum barrel 1 and a plurality of battery cells 4. The aluminum barrel 1 has a through-hole slot, and a metal bracket 2 with a roughly I-shaped cross section is provided in the slot in the middle of the aluminum barrel 1. Figure 2 、 Figure 3As shown, the outer sides of the I-shaped metal bracket 2 abut against the inner wall of the aluminum barrel 1. A main auxiliary bracket 3 and a secondary auxiliary bracket 9 for accommodating the battery cells 4 are respectively provided on the inner sides of the metal bracket 2 within the aluminum barrel 1. The outer dimensions of the metal bracket 2 are larger than those of the main auxiliary bracket 3 and the secondary auxiliary bracket 9. The inner dimensions of the metal bracket 2 are larger than those of the main auxiliary bracket 3. One end of the main auxiliary bracket 3 abuts against the middle of the metal bracket 2, and the outer side of the main auxiliary bracket 3 abuts against the inner side of the metal bracket 2. The secondary auxiliary bracket 9 is provided with a first latch 10, and a clamping strip 7 is provided on each radial side of the secondary auxiliary bracket 9 to cooperate with the first latch 10. The metal bracket 2 is provided with a second latch 8 that cooperates with the clamping strip 7.

[0021] like Figure 6 As shown, the main auxiliary bracket 3 is provided with a plurality of waist-shaped holes 11, and the metal bracket 2 is provided with threaded holes that match the waist-shaped holes 11. Bolts 5 are provided in the threaded holes, and the threaded ends of the bolts 5 pass through the waist-shaped holes 11 and match with the threaded holes.

[0022] like Figure 1 As shown, an insulating pad 6 is provided between the metal bracket 2 and the main auxiliary bracket 3.

[0023] Working principle: First, the outer size of the metal bracket 2 is set to be larger than the main auxiliary bracket 3 and the auxiliary auxiliary bracket 9 to form a clear hierarchical structure, so that when the aluminum barrel 1 is squeezed from the outside, the metal bracket 2 will bear the pressure first. The metal bracket 2 is made of aluminum alloy die-casting, forging or welding splicing, and has sufficient strength and rigidity to effectively disperse and absorb impact force. The main auxiliary bracket 3 is fixed to the metal bracket 2 by bolts 5 in waist-shaped holes 11. This connection method allows the main and auxiliary brackets 3 to have a certain relative displacement when the metal bracket 2 is squeezed and deformed, avoiding rigid connection. The direct squeezing of the battery cell 4 by the main auxiliary bracket 3 caused by the connection effectively reduces the impact force on the internal battery cell 4. Sufficient space is designed inside the metal bracket 2 as a protection space for the battery cell 4, so that when the metal bracket 2 is squeezed and deformed, the battery cell 4 will not be squeezed immediately, but there is room for buffering. Combined with the above-mentioned hierarchical pressure resistance and deformation buffering mechanism, the anti-extrusion ability of the battery structure is improved. The insulating pad 6 is placed close to the inner side of the metal bracket 2 to effectively isolate the battery cell 4 from direct contact with the metal bracket 2, which plays a flame retardant role in the event of an accident, prevents the spread of fire, and reduces the risk of short circuit and fire.

Claims

1. A compression-resistant power-assisted bicycle battery structure, comprising an aluminum barrel and a plurality of battery cells, characterized in that: A through-groove is provided inside the aluminum barrel, and a metal bracket with a roughly I-shaped cross-section is provided in the groove located in the middle of the aluminum barrel. The outer sides of the I-shape of the metal bracket are against the inner wall of the aluminum barrel, and a main auxiliary bracket and a secondary auxiliary bracket for accommodating battery cells are respectively provided on both sides of the metal bracket in the aluminum barrel. The outer dimension of the metal bracket is larger than the main auxiliary bracket and the secondary auxiliary bracket, the inner dimension of the metal bracket is larger than the outer dimension of the main auxiliary bracket, and one end of the main auxiliary bracket is against the middle of the metal bracket, and the outer side of the main auxiliary bracket is against the inner side of the metal bracket. A first bayonet is provided on each of the secondary auxiliary brackets, and a clamping strip cooperating with the first bayonet is respectively provided on both radial sides of the secondary auxiliary bracket.

2. The anti-extrusion power-assisted bicycle battery structure according to claim 1, characterized in that: The metal bracket is provided with a second clip that matches the clip strip.

3. The anti-extrusion power-assisted bicycle battery structure according to claim 1, characterized in that: The main auxiliary bracket is provided with a plurality of waist-shaped holes, and the metal bracket is provided with threaded holes matching the waist-shaped holes. Bolts are provided in the threaded holes, and the threaded ends of the bolts pass through the waist-shaped holes and match the threaded holes.

4. The anti-extrusion power-assisted bicycle battery structure according to claim 1, characterized in that: An insulating pad is provided between the metal bracket and the main auxiliary bracket.

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