Battery structure for power-assisted bicycle

Abstract

The utility model discloses a kind of battery structure of power-assisted bicycle with strong extrusion resistance, including aluminium barrel, the aluminium barrel inside is provided with through air slot, air slot is provided with main electric core component and two auxiliary electric core components, main electric core component includes the support frame of cross section substantially cross, the main support of being set at the both ends of support frame and four main electric cores, the four end portions of support frame section are in contact with the inner wall of aluminium barrel, auxiliary electric core component includes two auxiliary supports, auxiliary support includes auxiliary substrate, the both ends of support frame are provided with two threaded holes respectively, main substrate and auxiliary substrate are provided with guide hole respectively, main electric core component and auxiliary electric core component are connected by bolt between, bolt is connected with the threaded hole on support frame after passing through the guide hole on main substrate and auxiliary substrate, the utility model is novel in structure, the main support of cross structure is set to bear strong extrusion force, to ensure the stability of overall structure.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle battery technology, and in particular to a battery structure for a power-assisted bicycle. Background Technology

[0002] With the rapid development of the electric-assist bicycle market, consumers are increasingly favoring its convenience and practicality, leading to a continuous rise in market demand. Consequently, the requirements for battery safety and durability are also increasing.

[0003] The new European battery certification standard focuses on this, emphasizing battery stability under extreme conditions, with resistance to compression being a key indicator. This is because in actual riding, e-bikes inevitably encounter collisions and falls, making the battery highly susceptible to external pressure.

[0004] However, current battery structures are inadequate in this regard. When subjected to external pressure, the battery cells inside are easily damaged. As the core component of a battery, damage to the cells can lead to short circuits. Short circuits cause a significant rise in battery temperature, potentially triggering a series of safety hazards such as smoke, fire, or even explosion, seriously threatening the lives and property of users. Therefore, improving the battery's resistance to pressure and ensuring its stability and safety under extreme conditions has become an urgent problem to be solved. Summary of the Invention

[0005] This invention proposes a battery structure for electric bicycles with strong resistance to compression, which solves the existing problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a battery structure for a power-assisted bicycle, comprising an aluminum can, wherein a through slot is formed inside the aluminum can, and a main battery cell assembly and two auxiliary battery cell assemblies are arranged in the slot. The two auxiliary battery cell assemblies are respectively located at both ends of the main battery cell assembly. The main battery cell assembly includes a support frame with a cross-shaped cross section, main brackets arranged at both ends of the support frame, and four main battery cells. The four main battery cells are respectively located in the four quadrants of the cross section of the support frame, and the four ends of the cross section of the support frame abut against the inner wall of the aluminum can. The main bracket includes a main base plate, on which four main through holes for accommodating the ends of the main battery cells are provided. A main baffle for blocking the end face of the main battery cells and exposing the electrodes of the main battery cells is provided on one side end face of the main base plate. The main battery cell assembly consists of two sub-supports, each with a sub-base plate. The sub-base plate has four sub-through holes. The two sub-supports are connected by four sub-batteries. Each sub-base plate has a sub-baffle plate that blocks the end face of the sub-battery and exposes its electrode. The two ends of each of the four sub-batteries are located within the sub-through holes and abut against the sub-baffle plates. The four sub-battery electrodes are connected by sub-conductive sheets. Each end of the support frame has two threaded holes. Guide holes are provided on both the main and sub-base plates. The main battery cell assembly and the sub-battery assembly are connected by bolts. The bolts pass through the guide holes on the main and sub-base plates and are threaded into the threaded holes on the support frame.

[0007] The main base plate is provided with cross grooves to accommodate the two ends of the support frame.

[0008] A circular baffle is provided at the edge of each of the four main through holes of the main substrate. The distance between the outer walls of adjacent circular baffles is equivalent to and matches the width of the cross-section of the four sides of the support frame.

[0009] The main substrate and the sub-substrate are respectively provided with a number of pairs of cards, with a notch formed between the ends of each pair of cards, a main buckle between each pair of cards and the main substrate, and a sub buckle between each pair of cards and the sub-substrate.

[0010] The beneficial effects of this utility model are: by setting a cross-shaped main support frame to withstand strong compressive forces, the stability of the overall structure is guaranteed. Attached Figure Description

[0011] Figure 1 This is an exploded view of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional view of the present invention.

[0013] Figure 3 For the present utility model Figure 2 AA-direction cross-section diagram.

[0014] Figure 4For the present utility model Figure 2 A partial cross-sectional view after the aluminum drum has been removed.

[0015] Figure 5 This is a connection diagram of the main battery cell assembly and the auxiliary battery cell assembly in this utility model.

[0016] Figure 6 This is an exploded view of the main battery cell assembly in this utility model.

[0017] Figure 7 This is a structural diagram of the main support frame in this utility model.

[0018] Figure 8 This is a structural diagram of the secondary support in this utility model.

[0019] The following are the labels in the diagram: 1. Aluminum barrel; 2. Main battery cell assembly; 3. Secondary battery cell assembly; 4. Support frame; 5. Main battery cell; 6. Main substrate; 7. Main through hole; 8. Main conductive sheet; 9. Secondary substrate; 10. Secondary through hole; 11. Secondary battery cell; 12. Secondary baffle; 13. Main baffle; 14. Secondary conductive sheet; 15. Threaded hole; 16. Guide hole; 17. Bolt; 18. Clip; 19. Notch; 20. Main buckle; 21. Secondary buckle; 22. Circular baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1-8As shown, a battery structure for a power-assisted bicycle includes an aluminum canister 1. A through-hole is formed inside the aluminum canister 1, within which a main battery cell assembly 2 and two auxiliary battery cell assemblies 3 are disposed. The two auxiliary battery cell assemblies 3 are located at opposite ends of the main battery cell assembly 2. The main battery cell assembly 2 includes a support frame 4 with a roughly cross-shaped cross section, main supports at both ends of the support frame 4, and four main battery cells 5. The four main battery cells 5 are located in the four quadrants of the cross section of the support frame 4, and the four ends of the support frame 4 abut against the inner wall of the aluminum canister 1. The main supports include a main base plate 6, which has four main through holes 7 for accommodating the ends of the main battery cells 5. A main baffle 13 is provided on one side of the main base plate 6 to block the end faces of the main battery cells 5 and expose the electrodes of the main battery cells 5. The electrodes of the main battery cells 5 located at the same end of the support frame 4 are connected by main conductive sheets 8. The auxiliary battery cell assembly 3 includes two auxiliary supports, each including an auxiliary substrate 9. The auxiliary substrate 9 has four auxiliary through holes 10. The two auxiliary supports are connected by four auxiliary batteries 11. The auxiliary substrate 9 is provided with auxiliary baffles 12 to block the end face of the auxiliary batteries 11 and expose the electrodes of the auxiliary batteries. The two ends of the four auxiliary batteries 11 are located in the auxiliary through holes 10 and abut against the auxiliary baffles 12. The electrodes of the four auxiliary batteries are connected by auxiliary conductive sheets 14. The two ends of the support frame 4 are provided with two threaded holes 15. The main substrate 6 and the auxiliary substrate 9 are provided with guide holes 16. The main battery cell assembly and the auxiliary battery cell assembly are connected by bolts 17. The bolts 17 pass through the guide holes 16 on the main substrate 6 and the auxiliary substrate 9 and are threaded into the threaded holes 15 on the support frame 4, thereby realizing the connection and fixation of the main battery cell assembly and the auxiliary battery cell assembly.

[0022] To ensure that the support frame 4 and the main substrate 6 are in the same horizontal or vertical direction, and to avoid the risk of short circuit caused by the contact between the main battery cell 5 and the support frame 4, the following two structures can be adopted. First, the main substrate 6 is provided with cross grooves to accommodate the ends of the support frame 4, so that the ends of the support frame 4 can be inserted into the main substrate 6.

[0023] The second type, such as Figure 6 As shown, circular baffles 22 are respectively provided at the edges of the four main through holes 7 of the main substrate 6. The distance between the outer walls of adjacent circular baffles 22 is equivalent to and matches the width of the cross-section of the four sides of the support frame 4. That is, the end of the support frame 4 can be inserted between adjacent circular baffles 22 to achieve accurate positioning.

[0024] The main substrate 6 and the sub-substrate 9 are each provided with several pairs of clips 18. A notch 19 is formed between the ends of each pair of clips 18. A main clip 20 is formed between each pair of clips 18 and the main substrate 6, and a sub-clip 21 is formed between each pair of clips 18 and the sub-substrate 9. In actual use, wiring (placing wires) needs to be installed inside the aluminum drum 1, i.e., connecting various battery cells or for other purposes. With the above structure, the wires are inserted through the notch 19 into the main clips 20 and sub-clips 21, effectively preventing safety hazards caused by tangled wires, maintaining an aesthetically pleasing appearance, and allowing installers to quickly find the required wires, thus improving work efficiency.

[0025] The advantages of this utility model are: the ends of the four sections of the support frame 4 abut against the inner wall of the aluminum barrel 1 to provide support, so as to form a clear hierarchical structure. When the aluminum barrel 1 is subjected to external pressure, the support frame 4 bears the pressure first. The support frame 4 has sufficient strength and rigidity to effectively disperse and absorb the impact force.

Claims

1. A battery structure for a power-assisted bicycle, comprising an aluminum canister, characterized in that: The aluminum barrel has a through-hole, within which a main battery cell assembly and two auxiliary battery cell assemblies are housed. The two auxiliary battery cell assemblies are located at opposite ends of the main battery cell assembly. The main battery cell assembly includes a support frame with a roughly cross-shaped cross section, main supports at both ends of the support frame, and four main battery cells. The four main battery cells are located in the four quadrants of the support frame's cross section, with the four ends of the support frame abutting against the inner wall of the aluminum barrel. The main supports include a main base plate with four main through holes for accommodating the ends of the main battery cells. A main baffle is located on one side of the main base plate to block the end faces of the main battery cells and expose their electrodes. The electrodes of the main battery cells located at the same end of the support frame are connected by... The main and secondary battery cell assemblies are connected via a main conductive sheet. The secondary battery cell assembly includes two secondary supports, each with a secondary substrate. The secondary substrate has four secondary through holes. The two secondary supports are connected via four secondary battery cells. The secondary substrate has secondary baffles to block the end faces of the secondary battery cells and expose their electrodes. The two ends of the four secondary battery cells are located in the secondary through holes and abut against the secondary baffles. The four secondary battery cell electrodes are connected via secondary conductive sheets. The two ends of the support frame have two threaded holes. The main substrate and the secondary substrate have guide holes. The main battery cell assembly and the secondary battery cell assembly are connected via bolts. The bolts pass through the guide holes on the main substrate and the secondary substrate and are threaded into the threaded holes on the support frame.

2. The battery structure for a power-assisted bicycle according to claim 1, characterized in that: The main base plate is provided with cross grooves to accommodate the two ends of the support frame.

3. The battery structure for a power-assisted bicycle according to claim 1, characterized in that: A circular baffle is provided at the edge of each of the four main through holes of the main substrate. The distance between the outer walls of adjacent circular baffles is equivalent to and matches the width of the cross-section of the four sides of the support frame.

4. The battery structure for a power-assisted bicycle according to claim 1, characterized in that: The main substrate and the sub-substrate are respectively provided with a number of pairs of cards, with a notch formed between the ends of each pair of cards, a main buckle between each pair of cards and the main substrate, and a sub buckle between each pair of cards and the sub-substrate.

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