Modularized quick-release battery system and electric bicycle

Abstract

The utility model relates to the technical field of electric bicycles, in particular to a modular quick-release battery system and an electric bicycle. The modularized quick-release battery system comprises a modularized quick-release battery system and an electric bicycle, the modularized quick-release battery system comprises a battery shell, at least two battery packs, a fixing assembly and an unlocking assembly, the battery packs are arranged in the battery shell in an end-to-end connection mode, electric connection is achieved through cooperation of a connecting base and a connecting groove, and the fixing assembly can detachably fix the connecting base in the connecting groove; the unlocking assembly is used for unlocking the fixing assembly; the electric bicycle comprises the modularized quick-release battery system and an electric bicycle body, and the modularized quick-release battery system is arranged on a goods shelf at the rear end of the electric bicycle body. The technical effects that the battery packs are convenient to disassemble and assemble, modular combination is achieved, and the number of the battery packs is flexibly adjusted are achieved.

Description

Technical Field

[0001] This application relates to the technical field of electric bicycles, and in particular to a modular quick-release battery system and an electric bicycle. Background Technology

[0002] With the increasing demand for urban commuting and short-distance travel, electric bicycles are becoming a popular mode of transportation due to their efficiency, environmental friendliness, and economy. As the power source for electric bicycles, the battery's range and charging method are key factors in their performance.

[0003] Currently, most traditional electric bicycles use integrated batteries, which are fixed in a specific position on the frame. This design limits flexibility in adapting to different travel needs. For example, during long trips, the fixed battery capacity often leads to insufficient power; while for short trips, the battery weight cannot be reduced, resulting in excessive vehicle load. Furthermore, the installation and removal of these integrated batteries is complex, requiring specialized tools and making them difficult for ordinary users. Utility Model Content

[0004] To address the inconvenience of battery use, this application provides a modular quick-release battery system and an electric bicycle.

[0005] In a first aspect, this application provides a modular quick-release battery system, which adopts the following technical solution:

[0006] A modular quick-release battery system includes a battery casing, at least two battery packs, a fixing component, and an unlocking component. The battery casing has an opening and closing cover at its rear end. The battery packs are sequentially arranged end-to-end inside the battery casing. A connector is protruding from the head of each battery pack, and a connection slot is formed at the tail end of each battery pack for the connector to be inserted. Pins for electrical connection are provided on the end face of the connector and the bottom wall of the connection slot. The fixing component can detachably fix the connector in the connection slot, and the unlocking component is used to unlock the fixing component.

[0007] By adopting the above technical solution, modular splicing of battery packs is achieved, which facilitates installation and disassembly, and makes battery maintenance and replacement convenient. The pins are used to realize the electrical connection between battery packs; the fixing component makes the connector stable in the connecting slot to ensure the reliability of the connection; the unlocking component can unlock the fixing component to facilitate the separation of battery packs; thus, users can flexibly adjust the number of batteries to be installed according to the travel distance, improving the convenience of battery use.

[0008] Optionally, the fixing component includes a buckle and an elastic element. The buckle is respectively provided on two parallel sides of the connecting seat. The battery pack has a corresponding slot on the side wall of the connecting groove for the buckle head to engage. The elastic element always drives the buckle head to extend out of the side wall of the connecting seat. The buckle head has an inclined surface on the side away from the battery pack. When the connecting seat is inserted into the connecting groove, the inclined surface of the buckle abuts against the side wall of the connecting groove.

[0009] By adopting the above technical solution, the battery pack can be installed end to end in the battery casing. The connector and the connector slot cooperate to realize the assembly of the battery pack. At the same time, by using the buckle and the slot to cooperate, the connector can be detachably fixed in the connector slot under the action of the elastic element. The inclined design makes it easy for the connector to be smoothly inserted into the connector slot.

[0010] Optionally, the elastic element is a spring, and the buckle is rotatably disposed in the connecting seat via a rotating shaft. The connecting seat has a movable groove for the buckle to rotate so that the buckle head extends out of the side wall of the connecting seat or retracts into the connecting seat. The spring is located at the end away from the buckle head and on the same side as the buckle head. When the buckle head extends out of the side wall of the connecting seat and is engaged in the movable groove, the spring abuts against the side wall of the buckle and is in a compressed state.

[0011] By adopting the above technical solution, the spring is used as an elastic element to provide a stable elastic force for the buckle, so that the buckle remains in the snap-fit ​​state; the buckle is rotated in the connecting seat by the rotating shaft and cooperates with the movable groove, so that the buckle head can extend or retract into the connecting seat, which facilitates the installation and removal of the battery pack; the spring is in a compressed state when the buckle is snapped into the slot, which can ensure that the buckle is firmly snapped in place and ensure a stable connection between battery packs.

[0012] Optionally, the unlocking component includes a handle and an unlocking rope. The handle is rotatably mounted at the tail of the battery pack, and a groove is provided on the surface of the battery pack. The handle can be rotatably mounted in the groove. There are two unlocking ropes corresponding to the two buckles. One end of the unlocking rope passes through a spring and is connected to the side wall of the tail of the buckle. The other end of the unlocking rope extends to the tail of the battery pack and is connected to the end of the handle.

[0013] By adopting the above technical solution, the handle and unlocking rope of the unlocking component work together. Pulling the handle can drive the unlocking rope to make the buckle retract against the spring force, thereby unlocking the fixed component. The handle can be rotated and embedded in the groove, which is convenient for storing the handle and also facilitates the splicing of two adjacent batteries.

[0014] Optionally, the handle includes a slider and a handle body. The slider is slidably disposed within the battery pack. The tail of the battery pack has a groove for the slider to slide in. The unlocking rope is connected to the slider. The handle body is rotatably connected to the end of the slider. The groove is connected to the groove.

[0015] By adopting the above technical solution, the handle is designed as a slider and a handle body. The slider can slide in the groove of the battery pack. The unlocking rope is connected to the slider. The handle body is rotatably connected to the end of the slider. The groove is connected to the groove, which makes it convenient to move the slider by pulling the handle body. Then, the unlocking rope controls the buckle to unlock, realizing quick disassembly of the battery pack. The rotatable connection of the handle body makes it easy to store in the groove.

[0016] Optionally, a limiting block is provided on the side wall of the slider, and a limiting groove is provided in the battery pack for the limiting block to slide, and the limiting groove is connected to the sliding groove.

[0017] By adopting the above technical solution, the sliding block in the limiting groove can prevent the slider from falling out of the groove, thus ensuring the stability of the handle and unlocking structure.

[0018] Optionally, the battery pack has a protrusion on the side wall of the recess, and the handle body can pass through the protrusion and be inserted into the recess; a force-applying groove is formed on the side wall of the battery pack to facilitate the removal of the handle body, and the force-applying groove is connected to the recess.

[0019] By adopting the above technical solution, the protrusion allows the handle body to be interference-locked into the groove, preventing the handle body from coming out on its own when not in operation; the force groove makes it easy for the user to remove the handle body from the groove, which facilitates the subsequent disassembly of the battery pack.

[0020] Optionally, the number of pins includes at least two sets, which include a set of positive pins and a set of negative pins.

[0021] Optionally, the pins are configured in five groups, including positive and negative pins on both sides, two communication pins and a wake-up pin in the middle. When the wake-up pins on two adjacent battery packs are connected, the battery discharges after a 0.5-second delay.

[0022] By adopting the above technical solution, the positive and negative pins on both sides of the five sets of pins realize the basic power supply function of the battery pack. The design on both sides can increase the spacing and ensure power supply safety. The two communication pins in the middle can be used for data communication between battery packs, and a wake-up pin can control the battery working state. When the wake-up pins on adjacent battery packs are connected, the battery discharges for 0.5 seconds, avoiding instantaneous high current surges and improving battery safety and service life.

[0023] Secondly, this application provides an electric bicycle, which adopts the following technical solution:

[0024] The invention includes the aforementioned modular quick-release battery system, as well as an electric bicycle body. The rear of the electric bicycle body is equipped with a rack, and the modular quick-release battery system is mounted on the rack.

[0025] By adopting the above technical solution, the electric bicycle is equipped with a modular quick-release battery system on the shelf, which can realize the detachable connection between battery packs, making it easy to add or remove batteries, and also convenient to replace and maintain; it is easy to operate and does not affect the normal operation of the electric bicycle.

[0026] In summary, this application includes at least one of the following beneficial effects:

[0027] 1. The connector is detachably fixed in the connector slot by a fixing component and unlocked by an unlocking component. This modular design allows for flexible adjustment of the number of batteries according to actual needs, adapting to different travel requirements and meeting diverse usage scenarios. It solves the problem of lack of flexibility in traditional one-piece molded structures.

[0028] 2. By equipping the electric bicycle rack with a modular quick-release battery system, the battery packs can be detachably connected, making it easy to add or remove batteries, as well as to replace and maintain them; it is easy to operate and does not affect the normal operation of the electric bicycle. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of Example 1;

[0030] Figure 2 This is a schematic diagram of the exploded structure of the battery pack;

[0031] Figure 3 This is a schematic diagram of the battery pack head structure;

[0032] Figure 4 This is a schematic diagram of the structure at the rear of the battery pack;

[0033] Figure 5 This is a cross-sectional view of the battery pack.

[0034] Figure 6 yes Figure 5 An enlarged structural diagram;

[0035] Figure 7 This is a schematic diagram of the structure of Example 2.

[0036] Explanation of reference numerals in the attached drawings: 1. Battery casing; 11. Opening / closing cover; 2. Battery pack; 21. Connecting base; 22. Connecting groove; 23. Pin; 24. Slot; 25. Movable groove; 26. Inserted groove; 27. Limiting groove; 28. Protrusion; 29. ​​Force application groove; 3. Fixing component; 31. Buckle; 32. Elastic element; 4. Unlocking component; 41. Handle; 411. Slider; 412. Handle body; 413. Limiting block; 42. Unlocking rope; 5. Bicycle body; 51. Rack. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0038] Example 1

[0039] This application discloses a modular quick-release battery system. (Refer to...) Figure 1 and Figure 2 The battery system includes a battery casing 1, at least two battery packs 2, a fixing component 3, and a unlocking component 4. Each battery pack 2 is a rectangular battery cell composed of an outer casing and internal battery cells. Multiple battery packs 2 are sequentially arranged end-to-end within the battery casing 1. The fixing component 3 can detachably fix the connection structure of adjacent battery packs 2, and also detachably fix the battery packs 2 within the battery casing 1. The unlocking component 4 is used to unlock the fixing component 3, enabling quick disassembly and assembly of the battery packs 2. Through the cooperation of the fixing component 3 and the unlocking component 4, the number of battery packs 2 can be easily adjusted to adapt to different travel requirements.

[0040] Reference Figure 1 and Figure 2 In this embodiment, the battery casing 1 is provided with a cover 11 at its tail. The battery casing 1 and the cover 11 are preferably made of high-strength, waterproof engineering plastic to provide robust protection for the internal battery pack 2. In other embodiments, the battery casing 1 can also be made of stainless steel or other metal materials. Its shape is typically rectangular, adapted to the tail of the battery casing 1. The cover 11 is connected to the battery casing 1 via a hinge or snap-fit ​​31, facilitating opening and closing. Optionally, to improve the anti-theft performance of the battery, an anti-theft lock can also be provided between the battery casing 1 and the cover 11.

[0041] Reference Figure 3 and Figure 4The battery pack 2 has a connector 21 protruding from its head, and a connector slot 22 for the connector 21 to be inserted into its tail. A connector slot 22 is also provided inside the battery casing 1 at its head position. The fixing component 3 can fix the connector 21 within the connector slot 22, thereby fixing the battery pack 2 inside the battery casing 1 and connecting multiple battery packs 2 together. The connector 21 is rectangular in shape and integrates electrical terminals, with pins 23 on its end face. Similarly, the battery pack 2 also has pins 23 within the connector slot 22, allowing for electrical connection between two battery packs 2 when they are connected.

[0042] Reference Figure 5 and Figure 6 In this embodiment, the fixing component 3 includes a buckle 31 and an elastic element 32. The buckles 31 are respectively provided on the two parallel side walls of the connecting seat 21. The main body of the buckle 31 is a long rectangular sheet structure, generally made of stainless steel. The middle part of the buckle 31 is rotatably mounted in the connecting seat 21. The head of the buckle 31 is the head of the buckle 31 near the connecting seat 21. The side of the head of the buckle 31 that is away from the other buckle 31 protrudes to form a buckle head. Under the action of the elastic element 32, the buckle head of the buckle 31 protrudes from the side wall of the connecting seat 21. The battery pack 2 has a corresponding slot 24 on the side wall of the connecting groove 22 for the buckles 31 to engage. Meanwhile, the head of the buckle 31, i.e. the buckle part, is provided with a bevel on the side away from the battery pack 2, or it can be provided with an arc surface; when the connecting seat 21 is inserted into the connecting groove 22, the bevel part of the buckle 31 first abuts against the previous battery pack 2, so that the buckle 31 is retracted into the connecting seat 21. After it is inserted into place, under the action of the elastic member 32, the head of the buckle 31 moves and inserts into the connecting groove 22, forming a tight fit between the two battery packs 2.

[0043] Furthermore, the elastic element 32 is a spring, and the connecting seat 21 has a movable groove 25 for the buckle 31 to rotate. The buckle 31 can rotate so that its head extends out of the connecting seat 21, or it can rotate so that its head retracts into the connecting seat 21. The spring is located at the end away from the head of the buckle 31 and on the same side as the head of the buckle 31. When the head of the buckle 31 extends out of the side wall of the connecting seat 21 and abuts against the side wall of the movable groove 25, the spring abuts against the side wall of the buckle 31 and is in a compressed state. When the connecting seat 21 is inserted into the connecting groove 22, the inclined surface of the buckle 31 abuts against the side wall of the connecting groove 22, causing the buckle 31 to rotate inward, and the spring is further compressed. When it reaches the position of the slot 24, the spring force pushes the buckle 31 into the slot 24, thereby fixing the connecting seat 21 in the connecting groove 22. At the same time, the spring is still in a compressed state, which can ensure the stability of the connection.

[0044] Reference Figure 4 and Figure 6In this embodiment, the unlocking component 4 includes a handle 41 and an unlocking rope 42. The handle 41 is rotatably disposed at the tail of the battery pack 2, and a groove 26 is provided on the surface of the battery pack 2, allowing the handle 41 to be rotatably embedded in the groove 26. Specifically, the handle 41 includes a slider 411 and a handle body 412. The slider 411 has a rectangular block structure and is slidably disposed within the battery pack 2 along its length. A groove is provided at the tail of the battery pack 2 for the slider 411 to slide in, and the unlocking rope 42 is connected to the slider 411. The handle body 412 has a "U" shaped structure, and two sliders 411 are provided. The two ends of the handle body 412 are rotatably connected to the ends of the two sliders 411, and the groove 26 is connected to the groove, so that the handle body 412 can be rotatably stored in the groove 26.

[0045] In a further preferred embodiment, a limiting block 413 is fixed on the side wall of the slider 411, and a limiting groove 27 is provided inside the battery pack 2 for the limiting block 413 to slide. The limiting groove 27 is connected to the slide groove. Through the sliding cooperation between the limiting block 413 and the limiting groove 27, the slider 411 can be prevented from dislodging from the slide groove. Two unlocking ropes 42 are provided corresponding to the two buckles 31. One end of the unlocking rope 42 passes through the spring and is connected to the side wall of the tail of the buckle 31, and the other end extends to the tail of the battery pack 2 and is connected to the slider 411. When it is necessary to disassemble battery pack 2, rotate handle 41 so that it is on the same plane as slider 411, and then continue to apply force to move handle 41 outward. Handle 41 drives slider 411 to slide in the groove, and pulls buckle 31 through unlocking rope 42 to disengage buckle 31 from buckle groove 24, thereby releasing the fixation of connecting seat 21. At this time, limit block 413 just slides to abut against the outer side wall of limit groove 27. Therefore, if force is continued, battery pack 2 can be removed through handle 41, thus completing the disassembly of a single battery pack 2.

[0046] Reference Figure 4 and Figure 5 In an optional embodiment, the battery pack 2 has a protrusion 28 on the side wall of the recess 26, and the handle body 412 can pass through the protrusion 28 and be engaged in the recess 26. The protrusion 28 is generally made of a material with a certain degree of elasticity, such as rubber. When the handle 41 is rotated to the position of the recess 26, pressing the handle 41 firmly will cause it to pass through the protrusion 28 and be engaged in the recess 26, which will fix the handle 41 and prevent the handle 41 from rotating accidentally during normal use. At the same time, a force-applying groove 29 is also provided on the side wall of the rear of the battery pack 2 to facilitate the removal of the handle body 412. The force-applying groove 29 is initially connected to the recess 26.

[0047] The implementation principle of the modular quick-release battery system in this application embodiment is as follows: Before traveling, the number of battery packs 2 to be used can be determined according to the trip requirements. When assembling battery pack 2, simply insert the connector 21 on battery pack 2 into the battery casing 1 with the connector forward. When you hear the head of the buckle 31 click into the slot 24, rotate the handle 41 so that the handle body 412 is embedded in the groove 26. Then, insert the battery packs 2 in sequence according to the above method, and after completion, close the opening and closing cover 11 to complete the assembly of the entire battery system. When it is necessary to remove battery pack 2, simply open the opening and closing cover 11, apply force through the force groove 29 to remove the handle body 412 from the groove 26, and then use the handle body 412 to drive the unlocking rope 42 to unlock the buckle 31, and then remove the battery pack 2.

[0048] This modular quick-release battery system enables rapid assembly and disassembly of battery pack 2 through its modular design and the cooperation of fixing component 3 and unlocking component 4. Users can flexibly increase or decrease the number of battery packs 2 according to different travel needs. For long-distance travel, increasing the number of battery packs 2 improves range; for short-distance travel, decreasing the number of battery packs 2 reduces vehicle weight. This design also facilitates battery maintenance and replacement, lowering the barrier to entry for users and offering greater flexibility and convenience compared to traditional integrated batteries.

[0049] Example 2

[0050] This application discloses a modular quick-release battery system, which differs from Embodiment 1 in that it further discloses the configuration of pin 23.

[0051] Specifically, in this embodiment, at least two sets of pins 23 are provided. These two sets of pins 23 are positive pins and negative pins, that is, a positive pin and a negative pin are provided on the end face of the connector 21 and the bottom wall of the connector groove 22, so that when two adjacent battery packs are connected to each other, the corresponding pins 23 are also connected to each other and electrically connected.

[0052] Furthermore, five groups of pins 23 can be configured. These five groups of pins 23 include positive and negative pins located on both sides of the battery, with a large distance between them to effectively reduce the risk of short circuits. They also include two communication pins for data transmission and a wake-up pin for activating the battery's working state, located in the middle. The two communication pins ensure efficient data interaction and stable operation between the batteries. When the wake-up pins on two adjacent battery packs 2 are connected, the battery discharges with a 0.5-second delay, thereby avoiding arcing that could affect battery life and improving safety.

[0053] Example 3

[0054] Reference Figure 7This application provides an electric bicycle, including a modular quick-release battery system and an electric bicycle body 5. The electric bicycle body 5 has a rack 51 at the rear end. The modular quick-release battery system can be fixed to the rack 51 by bolts or other means, which makes it convenient for users to operate the battery without affecting the overall layout of the electric bicycle and riding safety.

[0055] The implementation principle of this embodiment is as follows: the electric bicycle adopts a modular quick-release battery system and installs it on the rack 51, so that users can more flexibly deal with different travel needs when using the electric bicycle. The number of battery packs 2 can be increased or decreased on the rack 51 according to the actual situation, without being limited by the integrated battery as in traditional electric bicycles.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular quick-release battery system, characterized in that: The battery housing includes a battery casing (1), at least two battery packs (2), a fixing component (3), and an unlocking component (4). The battery casing (1) has an opening and closing cover (11) at its tail. The battery packs (2) are arranged in the battery casing (1) with their ends connected. The battery packs (2) have a connector (21) protruding from their heads. The battery packs (2) have a connecting groove (22) at their tails for the connector (21) to be inserted into. The connector (21) and the bottom wall of the connecting groove (22) are provided with pins (23) for electrical connection. The fixing component (3) can detachably fix the connector (21) in the connecting groove (22). The unlocking component (4) is used to unlock the fixing component (3).

2. The modular quick-release battery system according to claim 1, characterized in that: The fixing component (3) includes a buckle (31) and an elastic element (32). The buckle (31) is respectively provided on two parallel sides of the connecting seat (21). The battery pack (2) has a corresponding slot (24) on the side wall of the connecting groove (22) for the head of the buckle (31) to engage. The elastic element (32) always drives the head of the buckle (31) to extend out of the side wall of the connecting seat (21). The side of the head of the buckle (31) away from the battery pack (2) is provided with an inclined surface. When the connecting seat (21) is inserted into the connecting groove (22), the inclined surface of the buckle (31) abuts against the side wall of the connecting groove (22).

3. A modular quick-release battery system according to claim 2, characterized in that: The elastic element (32) is a spring. The buckle (31) is rotatably mounted in the connecting seat (21) via a rotating shaft. The connecting seat (21) has a movable groove (25) for the buckle (31) to rotate so that the head of the buckle (31) extends out of the side wall of the connecting seat (21) or is retracted into the connecting seat (21). The spring is located at the end away from the head of the buckle (31) and on the same side as the head of the buckle (31). When the head of the buckle (31) extends out of the side wall of the connecting seat (21) and is engaged in the movable groove (25), the spring abuts against the side wall of the buckle (31) and is in a compressed state.

4. A modular quick-release battery system according to claim 3, characterized in that: The unlocking component (4) includes a handle (41) and an unlocking rope (42). The handle (41) is rotatably disposed at the tail of the battery pack (2), and a groove (26) is provided on the surface of the battery pack (2). The handle (41) can be rotatably disposed in the groove (26). There are two unlocking ropes (42) corresponding to the two buckles (31). One end of the unlocking rope (42) passes through the spring and is connected to the side wall of the tail of the buckle (31). The other end of the unlocking rope (42) extends to the tail of the battery pack (2) and is connected to the end of the handle (41).

5. A modular quick-release battery system according to claim 4, characterized in that: The handle (41) includes a slider (411) and a handle body (412). The slider (411) is slidably disposed in the battery pack (2). The battery pack (2) has a groove at its tail for the slider (411) to slide. The unlocking rope (42) is connected to the slider (411). The handle body (412) is rotatably connected to the end of the slider (411). The groove (26) is connected to the groove.

6. A modular quick-release battery system according to claim 5, characterized in that: A limiting block (413) is provided on the side wall of the slider (411), and a limiting groove (27) is provided in the battery pack (2) for the limiting block (413) to slide. The limiting groove (27) is connected to the sliding groove.

7. A modular quick-release battery system according to claim 5, characterized in that: The battery pack (2) has a protrusion (28) on the side wall of the groove (26), and the handle body (412) can pass through the protrusion (28) and be inserted into the groove (26); the side wall of the battery pack (2) has a force groove (29) for easy removal of the handle body (412), and the force groove (29) is connected to the groove (26).

8. A modular quick-release battery system according to claim 1, characterized in that: The number of pins (23) includes at least two sets, which include a set of positive pins and a set of negative pins.

9. A modular quick-release battery system according to claim 8, characterized in that: The pin (23) is provided with five groups, including positive pins and negative pins on both sides, two communication pins and a wake-up pin in the middle. When the wake-up pins on two adjacent battery packs (2) are connected, the battery discharges after a delay of 0.5 seconds.

10. An electric bicycle, characterized in that: The modular quick-release battery system according to any one of claims 1-9 also includes an electric bicycle body (5), the rear end of which is provided with a shelf (51), and the modular quick-release battery system is disposed on the shelf (51).

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