Battery pack, battery fixing device and two-wheeled vehicle

Abstract

The utility model discloses a battery pack, a battery fixing device and a two-wheeled vehicle, and belongs to the technical field of two-wheeled vehicles. The battery pack comprises at least one battery module, a shell and a plastic part, wherein the shell is used for packaging the battery module, and the plastic part is attached to the lower end face of the shell, and the bottom of the plastic part is hollowed out and is in a honeycomb shape. According to the utility model, the plastic part is designed at the bottom of the lithium battery, so that an existing two-wheeled vehicle does not need to be changed, and the adaptability of the whole battery fixing device is improved. Secondly, the plastic part is attached to the lower end face of the battery. The structural strength of the lithium battery is enhanced, the impact of the inserted battery pack on the frame can be further relieved, the buffering effect is achieved, the damage possibility of the frame and the battery pack is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of two-wheeled vehicles, in particular to a battery pack and a battery fixing device. Background Art

[0002] In recent years, in order to solve the pain points of short- and medium-distance travel, shared electric bicycles have emerged under the conditions of the gradual commercialization of technologies such as the Internet of Things, artificial intelligence, and big data. Most shared bicycles in cities use lithium batteries to help citizens ride. In the existing bicycle structure, since the battery needs to be removed and charged frequently, most of the batteries are inserted directly at the rear and lower part of the saddle, and the saddle is set to a flip-up structure, and the battery can be taken out when the saddle is flipped up. Therefore, the anti-theft, waterproof and dustproof design of lithium batteries is particularly important.

[0003] In this context, our company has designed an anti-theft device and a power-assisted bicycle with the device (publication number: CN108791686B). The electronic lock is set on the central control unit. The electronic lock is opened through the central control unit and the lock head of the electronic lock is retracted to remove the battery. The battery cannot be removed by flipping up the saddle, disassembling the saddle, etc. Therefore, the anti-theft device has good anti-theft performance and can effectively prevent the battery from being stolen. However, since the battery is rigidly connected to the electrical connection unit at the bottom, during the installation of the battery, the frame and the lithium battery may be damaged due to rigid collision. At the same time, during the riding of the power-assisted bicycle, frequent collisions and vibrations will occur between the lithium battery and the frame, generating noise. Summary of the invention

[0004] In order to overcome the above technical defects, the utility model provides a battery pack and a battery fixing device to solve the problems involved in the background technology.

[0005] The utility model provides a battery pack, comprising: at least one battery module, a shell configured to encapsulate the battery module, and a plastic part attached to the lower end surface of the shell and having a hollow bottom in a honeycomb shape.

[0006] Preferably or optionally, the electrical interface of the battery module is exposed on the upper end surface of the shell;

[0007] A water guide portion is arranged above the electrical interface.

[0008] Preferably or optionally, the shape of the water guiding portion is or is approximately V-shaped, and the electrical interface is located at an open end of the V-shaped structure.

[0009] Preferably or optionally, at least one slide groove and / or slide rail is formed on the outside of the housing.

[0010] Preferably or optionally, a protective box cover is provided on the shell and / or an attachment of the shell, suitable for closing the upper end surface of the shell.

[0011] Preferably or optionally, one side of the protection box cover is rotatably mounted on the shell and / or an attachment of the shell, and the other side of the protection box cover is fixed to a magnetic attraction structure / clamping structure on one side of the shell.

[0012] The utility model also provides a battery fixing device, comprising:

[0013] An accommodating space is attached to the frame of the two-wheeled vehicle, and the battery pack is embedded in the accommodating space along the upper part of the accommodating space;

[0014] A soft cushion is attached to the bottom of the accommodating space and corresponds to the position of the plastic piece.

[0015] Preferably or optionally, it also includes:

[0016] The battery connecting wire is arranged in the space formed between the protection box cover and the shell, and is plugged into the electrical interface.

[0017] Preferably or optionally, the battery connecting line comprises:

[0018] The plug comprises a body, a connector provided on the body and pluggable to the electrical interface, and a wiring harness provided on the body and perpendicular to the plugging direction of the connector;

[0019] The toggle part is rotatably mounted on the main body, and its shape is or is approximately U-shaped; and the distance from one end of the opening direction of the toggle part to the rotation connection point is greater than the distance from the upper end surface of the battery pack to the rotation connection point.

[0020] Preferably or optionally, a rear taillight is also provided on the rear end surface of the protection box cover.

[0021] The utility model also provides a two-wheeled vehicle, comprising the battery pack or the battery fixing device.

[0022] The utility model relates to a battery pack and a battery fixing device. Compared with the prior art, the utility model has the following beneficial effects: By designing a plastic part at the bottom of the lithium battery, the utility model does not need to modify the existing two-wheeled vehicle, thereby improving the adaptability of the entire battery fixing device. Secondly, the plastic part is attached to the lower end surface of the battery. Not only does it enhance the structural strength of the lithium battery, but it can also further alleviate the impact of inserting the battery pack on the frame, play a buffering role, reduce the possibility of damage to the frame and battery pack, and extend the life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure of the battery pack in the utility model. Figure 1 .

[0024] Figure 2 It is a schematic diagram of the bottom structure of the battery pack in the utility model.

[0025] Figure 3 This is a schematic diagram of the structure of the battery pack in the utility model. Figure 2 .

[0026] Figure 4 It is a structural schematic diagram of the battery fixing device in the utility model.

[0027] The accompanying drawings are marked as follows:

[0028] 110, frame; 120, base; 130, saddle riser;

[0029] 200, battery pack; 210, water guide; 220, housing;

[0030] 310, protective box cover; 311, rear taillight; 312, magnetic attraction structure; 313, snap-fit ​​structure; 320, anti-saw blade; 330, guide part; 331, guide rail;

[0031] 410, plastic parts; 420, cushions;

[0032] 500, battery connection line; 510, plug; 511, main body; 512, connector; 513, wiring harness; 520, toggle part;

[0033] 600. Central control unit. DETAILED DESCRIPTION

[0034] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0035] Example 1

[0036] See attached Figures 1 to 3, this embodiment provides a battery pack 200, which is applied to a two-wheeled vehicle, and includes: at least one battery module, a shell 220 configured to encapsulate the battery module, and a plastic part 410 attached to the lower end surface of the shell 220 and hollowed out at the bottom in a honeycomb shape. In the case where the battery module is provided in plurality, it can be one battery module, or a plurality of battery modules stacked in the vertical direction of the shell 220 and electrically connected to each other. The battery module is preferably a lithium battery cell. By designing the plastic part 410 at the bottom of the battery pack 200, there is no need to modify the existing two-wheeled vehicle, thereby improving the compatibility of the battery pack 200 with the battery fixing device. Secondly, the plastic part 410 is attached to the lower end surface of the battery. It not only strengthens the structural strength of the lithium battery, but also further alleviates the impact of the inserted battery on the frame 110, plays a buffering role, reduces the possibility of damage to the frame 110 and the battery pack 200, and prolongs the life.

[0037] In a further embodiment, the electrical interface of the battery module is exposed on the upper end surface of the housing 220, and a water guide 210 is provided above the electrical interface. Since the battery pack 200 is tiltedly arranged in the accommodation space along the saddle stand pipe 130, the water guide 210 is provided in a V-shape, and the water guide 210 is located above the electrical interface to shield rainwater.

[0038] It should be noted that the water guide part 210 and the electrical interface are both arranged on the upper end surface of the battery pack 200. When the battery pack 200 is placed at an angle, the water guide part 210 is located on the upper part of the inclined surface of the upper end surface of the battery pack 200, and cooperates with the shape of the electrical connection component on the upper end surface of the battery pack 200 to guide the accumulated water along the V-shaped groove to prevent the accumulated water from entering the electrical interface, thereby playing the role of shielding rainwater to the maximum extent.

[0039] In a further embodiment, at least one slide groove and / or slide rail is formed on the exterior of the housing 220 , so that the battery pack 200 can be smoothly slid into the accommodation space on the two-wheeled vehicle, thereby facilitating the installation of the battery pack 200 .

[0040] In a further embodiment, a protective box cover 310 is provided on the housing 220 and / or the attachment of the housing 220, which is suitable for closing the upper end surface of the housing 220. The attachment of the housing 220 can be a central control box cover of a two-wheeled vehicle. One side of the protective box cover 310 is rotatably mounted with the housing 220 and / or the attachment of the housing 220, and the other side of the protective box cover 310 is fixed with a magnetic attraction structure 312 / clamping structure 313 on one side of the housing 220, thereby improving the anti-theft, waterproof and dustproof performance of the entire battery pack 200.

[0041] See attached Figure 1The magnetic attraction structure 312 includes: a strong magnet and a magnetic attraction sheet. A magnet mounting bracket is provided under the central control box body to facilitate the installation of a circular strong magnet. Matchingly, a magnetic attraction sheet is provided on the upper end surface of the housing 220. The strong magnetic attraction of the circular strong magnet and the magnetic attraction sheet makes the central control box cover further closed and tightened.

[0042] See attached Figure 3 The snap-fit ​​structure 313 includes: a snap block and a snap slot. A snap block is provided below the central control box body, and a snap slot is provided on the upper end surface of the lithium housing 220 to match. The snap buckle is inserted into the snap slot to achieve the tight closure of the central control box cover. A pair of retractable glass beads are provided on the end surface of the snap slot, and a spring is provided inside the snap slot to drive the retractable glass beads.

[0043] Example 2

[0044] See attached Figure 4 This embodiment also provides a battery fixing device, which is applied to a two-wheeled vehicle, and the two-wheeled vehicle can be an electric bicycle or an electric-assisted bicycle.

[0045] The battery fixing device includes: a storage space and a soft pad 420. The storage space is formed by a base 120 attached to the frame 110, a saddle riser 130, and a plurality of fixed components on the fixed mounting frame 110 and / or the saddle riser 130; an opening is formed above the storage space, and the shape of the opening matches the shape of the battery pack 200, and the battery pack 200 described in Example 1 is embedded in the storage space along the opening; the soft pad 420 is attached to the bottom of the storage space, corresponding to the position of the plastic part 410. By designing the soft pad 420 on the upper surface of the base 120, the impact of the insertion of the battery pack 200 on the frame 110 can be further alleviated, which plays a buffering role, reduces the possibility of damage to the frame 110 and the battery pack 200, and prolongs the service life. At the same time, frequent collisions and vibrations between the battery pack 200 and the frame 110 are avoided, and the generation of noise is reduced.

[0046] In a further embodiment, the electronic lock is arranged on the fixed component or on the central control unit 600 attached to the fixed component. The electronic lock includes a lock head that can be extended and retracted, and is arranged on the housing 220 and corresponds to the position of the lock head. Preferably, the electronic lock is arranged on the central control unit 600, and the housing 220 can only be taken out by opening the electronic lock through the control unit and retracting the lock head of the electronic lock. The battery pack 200 cannot be taken out by flipping up the saddle, disassembling the saddle, etc., which has good anti-theft performance and can effectively prevent the battery pack 200 from being stolen.

[0047] In a further embodiment, the fixing component includes: a guide portion 330 and an anti-saw strip 320. The guide portion 330 is fixedly connected to the frame 110, and a guide rail 331 is provided on the guide portion 330 on the side facing the battery pack 200, and the guide rail 331 is provided in parallel with the saddle stand tube 130; a guide groove matching with the guide rail 331 is provided on the battery pack 200 at a position corresponding to the guide rail 331; the anti-saw strip 320 is symmetrically arranged on both sides of the central control unit 600 and the battery, and the anti-saw strip 320 shields the outer side of the contact surface of the battery; in addition, an arc groove is provided on the side facing the saddle stand tube 130 of the battery pack 200, and the curvature of the arc groove is consistent with the curvature of the saddle stand tube 130; because the battery pack 200 is closely matched with the saddle stand tube 130 and the guide portion 330. With such a configuration, the battery pack 200 can slide smoothly into the accommodation space, which is convenient for the installation of the battery pack 200. Furthermore, since the battery pack 200 is closely matched with the saddle stem 130 and the guide portion 330, the collision and vibration between the battery pack 200 and the frame 110 and the saddle stem 130 are small, thereby reducing the generation of noise.

[0048] In further embodiments, see the attached Figure 3 A battery connection line 500 is arranged in the space formed between the protective box cover 310 and the shell 220. The battery connection line 500 is plugged into the electrical interface to supply power to the two-wheeled vehicle. The battery connection line 500 includes: a plug 510 and a toggle part 520. The plug 510 includes a main body 511, a connector part 512 arranged on the main body 511 and pluggable to the electrical interface, and a wiring harness 513 arranged on the main body 511 and perpendicular to the plugging direction of the connector part 512; the toggle part 520 is rotatably mounted on the main body 511, and its shape is or is approximately U-shaped; and the distance from one end of the opening direction of the toggle part 520 to the rotation connection point is greater than the distance from the upper end surface of the battery pack 200 to the rotation connection point. By rotating the finger dial, the toggle portion 520 is rotated to the direction of the device opening and abuts against the upper end surface of the battery pack 200, forming a lever structure, which lifts the rotation point and the main body 511, so that the connector portion 512 is disengaged or partially disengaged from the electrical interface, and then separated from the electrical interface. The entire separation process is easy and simple, and the operation is labor-saving and convenient.

[0049] In addition, a rear tail light 311 is provided on the rear end surface of the protection box cover 310, so as to reasonably utilize the outer surface space of the protection box cover 310. Moreover, the rear tail light 311 is electrically connected to the battery connection line 500, and the battery pack 200 is used to supply power to the rear tail light 311.

[0050] Example 3

[0051] This embodiment also provides a two-wheeled vehicle, which may be, but is not limited to, an electric bicycle or an electric-assisted bicycle. The two-wheeled vehicle includes the battery pack 200 described in Embodiment 1 or the battery fixing device described in Embodiment 2.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A battery pack (200), characterized in that: include: At least one battery module, a shell (220) encapsulating the battery module, and a plastic part (410) attached to the lower end surface of the shell (220) and having a hollow bottom.

2. The battery pack (200) according to claim 1, characterized in that: The electrical interface of the battery module is exposed on the upper end surface of the housing (220); A water guide portion (210) is arranged above the electrical interface.

3. The battery pack (200) according to claim 2, characterized in that: The shape of the water guide portion (210) is or is approximately V-shaped, and the electrical interface is located at the open end of the V-shaped structure.

4. The battery pack (200) according to claim 1, characterized in that: At least one slide groove and / or slide rail is formed on the outside of the housing (220).

5. The battery pack (200) according to claim 2, characterized in that: The housing (220) and / or an attachment of the housing (220) is provided with a protective box cover (310) suitable for closing the upper end surface of the housing (220).

6. The battery pack (200) according to claim 5, characterized in that: One side of the protective box cover (310) is rotatably mounted on the shell (220) and / or an attachment of the shell (220), and the other side of the protective box cover (310) is fixed to a magnetic attraction structure (312) / an engaging structure (313) on one side of the shell (220).

7. A battery fixing device, characterized in that: include: An accommodating space is attached to a frame (110) of a two-wheeled vehicle, wherein the battery pack (200) according to claim 6 is embedded in the accommodating space along an upper portion of the accommodating space; A soft cushion (420) is attached to the bottom of the accommodating space and corresponds to the position of the plastic part (410).

8. The battery fixing device according to claim 7, characterized in that: Also includes: The battery connection line (500) is arranged in the space formed between the protection box cover (310) and the housing (220), and is plugged into the electrical interface.

9. The battery fixing device according to claim 8, characterized in that: The battery connecting line (500) comprises: The plug (510) comprises a main body (511), a connector (512) arranged on the main body (511) and pluggable to the electrical interface, and a wiring harness (513) arranged on the main body (511) and perpendicular to the plugging direction of the connector (512); The toggle portion (520) is rotatably mounted on the main body (511) and has a U-shape or an approximately U-shape; and the distance from one end of the opening direction of the toggle portion (520) to the rotation connection point is greater than the distance from the upper end surface of the battery pack (200) to the rotation connection point.

10. A two-wheeled vehicle, characterized in that: It comprises the battery pack (200) according to any one of claims 1 to 6 or the battery fixing device according to any one of claims 7 to 9.

Images