Side opening battery compartment and electric bicycle thereof

Abstract

The application provides a side-open battery compartment and an electric bicycle thereof, the side-open battery compartment comprises a battery compartment body, a battery compartment door and a battery, the bottom of the battery compartment body is hinged to the bottom of the battery compartment door, the battery is arranged in the battery compartment body, the battery is mounted on the battery compartment door, a damping elastic piece is connected to one side of the battery compartment body and the battery compartment door, and a limiting structure is arranged between the two sides of the battery compartment body and the battery compartment door. The application has the beneficial effects that: through cooperation of the battery fixed on the battery compartment door and the damping elastic piece, the technical problem that the battery compartment of the existing electric bicycle is prone to causing unstable center of gravity of the electric vehicle and even tilting when the battery is taken out is solved.

Description

Technical Field

[0001] This invention relates to the field of electric bicycle technology, and more particularly to a side-opening battery compartment and the electric bicycle thereof. Background Technology

[0002] The battery of a typical electric bicycle is usually removed from the seat or pedals. Because of its weight, placing the battery in the seat will shift the center of gravity of the bicycle further back, which will negatively affect handling. Also, it is more strenuous to lift the arm to remove the battery. While placing it on the pedals has less impact on the center of gravity, it still requires bending over to remove the battery, which is inconvenient for the user. In addition, placing the battery at a lower position makes waterproofing more important.

[0003] For waterproofing and other protective purposes, a battery compartment is usually set outside the battery to protect it. For example, Chinese patent document CN 203950854 U describes an electrical device that facilitates battery removal. It uses a box shape with a flip cover to protect the battery. When this type of battery compartment is used on an electric bicycle, the battery compartment needs to be opened when changing the battery, and then the battery is pulled out from the side of the electric bicycle to detach the battery from the battery compartment.

[0004] During the battery replacement process described above, because electric bicycle batteries are large and heavy, removing the battery can easily cause the electric bicycle to become unstable or even tip over. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a side-opening battery compartment and an electric bicycle thereof, which solves the technical problem that when removing the battery from the battery compartment of existing electric bicycles, the electric bicycle's center of gravity is easily unstable, and it may even tip over.

[0006] According to an embodiment of the present invention, a side-opening battery compartment includes a battery compartment body, a battery compartment door, and a battery. The bottom of the battery compartment body is hinged to the bottom of the battery compartment door. The battery is disposed inside the battery compartment body and mounted on the battery compartment door. A damping elastic element is connected to one side of the battery compartment body and the battery compartment door. Limiting structures are provided between the two sides of the battery compartment body and the battery compartment door.

[0007] The technical principle of this invention is as follows: the battery is installed on the battery compartment door, so that the battery and the battery compartment door can pop out at the same time, and the user only needs to lift the battery vertically.

[0008] The use of damping elastic components allows the battery and battery compartment door to pop out slowly, preventing the electric bicycle's center of gravity from becoming unstable due to rapid changes in battery position.

[0009] A limiting structure is used to ensure the extreme positions of the battery compartment door and the battery ejection.

[0010] Compared with the prior art, the present invention has the following beneficial effects: by using a battery fixed on the battery compartment door in conjunction with a damping elastic element, it solves the technical problem that when the battery compartment of an existing electric bicycle is removed, it is easy for the electric bicycle to become unstable or even tip over.

[0011] Furthermore, the angle between the line connecting the connection point of the battery compartment door and the connection point of the damping elastic element and the battery compartment body and the direction of the elastic force of the damping elastic element is in the range of 37.8°-57.3°.

[0012] The 37.8°-57.3° angle design ensures that the spring force is initially strong and then gradually decreases when opening, adapting to the shift in the center of gravity between the battery and the battery compartment. This prevents the electric bicycle from becoming unstable due to a rapid shift in the center of gravity. When closing, the resistance is initially weak and then gradually increases. This prevents the user from accidentally pinching their hand when closing too quickly, as the shift in the center of gravity between the battery and the battery compartment could cause the closing speed to increase. The initial weak resistance followed by a strong resistance effectively prevents this from happening.

[0013] Furthermore, a battery compartment is provided on one side of the battery compartment door near the bottom, the battery is placed in the battery compartment, and the limiting structure is provided between the battery compartment and the battery compartment body.

[0014] Because the bottom is easily affected by ground moisture, a battery can is used to block the ground moisture.

[0015] Furthermore, the limiting structure includes a limiting block and a limiting strip. The limiting block is installed on the inner side of the battery compartment body, and the limiting strip is set on the outer side of the battery compartment. When the battery compartment door is fully opened, the limiting block and the limiting strip are in close contact.

[0016] Furthermore, the limiting block is tilted, and the tilt angle of the limiting block is the same as the tilt angle when the battery compartment door is fully open. The length direction of the limiting strip is parallel to the height direction of the battery compartment.

[0017] This increases the contact area between the limiting block and the limiting strip, resulting in better load-bearing performance.

[0018] Furthermore, the battery tube is provided with a wire clamp, and the battery compartment body is provided with a clearance groove corresponding to the position of the wire clamp and the position after it is moved. The wire clamp passes through the clearance groove and can move along the clearance groove.

[0019] Furthermore, the damping elastic element is a gas spring, one end of which is hinged to the battery compartment body, and the other end of which is hinged to the battery compartment door.

[0020] Furthermore, a recessed handle is provided on the other side of the battery compartment door to facilitate opening the battery compartment door.

[0021] Furthermore, the battery compartment door and the top of the battery compartment body are equipped with a locking structure.

[0022] An electric bicycle according to an embodiment of the present invention includes a bicycle body, wherein a side-opening battery compartment is provided on the frame at the middle position of the bicycle body.

[0023] The battery compartment is opened to the side in the middle, so that the center of gravity of the entire electric bicycle is in the middle position.

[0024] Furthermore, a side support foot is provided on one side of the middle part of the bicycle body, and the battery compartment door is located in the direction opposite to the side support foot.

[0025] This design prevents the electric bicycle from tipping over to the open side due to the automatic movement of the battery compartment door when it is opened. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main right side structure of the side-opening battery compartment according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the side-opening battery compartment when closed, according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the side-opening battery compartment when it is fully opened according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the installation structure of the limiting structure according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the battery compartment door when it is closed, according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the battery compartment door when it is fully open, according to an embodiment of the present invention.

[0032] Figure 7 This is a schematic diagram of the main left side structure of the side-opening battery compartment according to an embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of an electric bicycle according to an embodiment of the present invention.

[0034] Figure 9 This is a right view of an electric bicycle according to an embodiment of the present invention.

[0035] In the above attached figures: 10, battery compartment body; 11, clearance groove; 20, battery compartment door; 21, battery holder; 22, cable tie frame; 23, recessed handle; 30, damping elastic element; 40, limiting structure; 41, limiting block; 42, limiting strip; 50, lock structure; 60, bicycle body; 61, side-opening battery compartment; 62, side support foot; 63, battery compartment door; 70, battery. Detailed Implementation

[0036] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] like Figure 1 The side-opening battery compartment shown includes a battery compartment body 10, a battery compartment door 20, and a battery 70. The bottom of the battery compartment body 10 is hinged to the bottom of the battery compartment door 20 with a pin, thus forming a covered box. The battery 70 is placed inside the battery compartment body 10 and is mounted on the battery compartment door 20, meaning that the battery 70 will move with the battery compartment door 20. A damping elastic element 30 is connected to the battery compartment door 20 on one side of the battery compartment body 10. Through the damping elastic element 30, the battery compartment door 20 and the battery 70 are slowly popped out, avoiding a rapid shift of the center of gravity, which would cause the electric bicycle with the side-opening battery compartment 70 installed to become unstable. Limiting structures 40 are provided between the two sides of the battery compartment body 10 and the battery compartment door 20, which limit the extreme position of the battery compartment door 20.

[0038] like Figure 2-3 As shown, the damping elastic element 30 is a gas spring. One end of the damping elastic element 30 is hinged to the battery compartment body 10 by a pin, and the other end of the damping spring is hinged to the battery compartment door 20 by a pin. The angle between the line connecting the battery compartment door 20 and the battery compartment body 10 and the line connecting the damping elastic element 30 and the direction of the elastic force of the damping elastic element 30 is in the range of 37.8°-57.3°. Specifically, the angle is 37.8° when the battery compartment door 20 is fully open and 57.3° when the battery compartment door 20 is closed.

[0039] When the battery compartment door 20 is opened, the angle of the elastic force direction of the damping elastic element 30 changes from 57.3° to 37.8°, causing the elastic force of the damping elastic element 30 on the battery compartment door 20 to decrease from large to small. This is because initially, the gravity acting on the battery compartment door 20 and the battery 70 is different from the opening direction of the battery compartment door 20, thus requiring a larger force. However, in the final stage, since the weight of the battery 70 and the battery compartment door 20 is in the same direction as the opening, a larger force is not required. At this point, the elastic force is reduced, allowing the battery compartment door 20 to still move at a relatively slow speed, thereby ensuring that the center of gravity does not change too quickly, and further ensuring the stability of the electric bicycle equipped with the side-opening battery compartment door 20.

[0040] When the battery compartment door 20 is closed, the angle of the elastic direction of the damping elastic element 30 changes from 37.8° to 57.3°, so that the resistance when closing will gradually increase. At the very end, the closing speed will not be too fast due to the weight of the battery 70 and the battery compartment door 20, which could cause problems such as pinching fingers.

[0041] like Figure 4-6 As shown, a battery container 21 is fixed to one side of the battery compartment door 20 near the bottom. The battery 70 is placed in the battery container 21. The battery container 21 can effectively prevent water from entering from the side near the ground. A limiting structure 40 is set between the battery container 21 and the battery compartment body 10. The specific limiting structure 40 includes a limiting block 41 and a limiting strip 42. The limiting block 41 is installed on the inner side of the battery compartment body 10, and the limiting strip 42 is integrally formed on the outer side of the battery container 21. When the battery compartment door 20 is fully opened, the limiting block 41 and the limiting strip 42 are in close contact, which can play a limiting role.

[0042] like Figure 5-6 As shown, the limiting block 41 is tilted, and the tilt angle of the limiting block 41 is the same as the tilt angle when the battery compartment door 20 is fully open. The length direction of the limiting strip 42 is parallel to the height direction of the battery compartment 21, so that the limiting block 41 and the limiting strip 42 are in surface contact when the battery compartment door 20 is fully open, which can withstand more force.

[0043] like Figure 5-7 As shown, the battery tube has an integrally formed wire clamp 22 for fixing the wires connected to the power supply. The battery compartment body 10 has a relief groove 11 corresponding to the position of the wire clamp 22 and the position after it is moved. The wire clamp 22 passes through the relief groove 11 and can move along the relief groove 11 to avoid interference between the movement of the wire clamp 22 and the battery compartment body 10.

[0044] like Figure 1 As shown, a recessed handle 23 is integrally formed on the other side of the battery compartment door 20, which makes it easy for users to open and close the battery compartment door 20.

[0045] like Figure 1 , 7 As shown, the battery compartment door 20 and the top of the battery compartment body 10 are equipped with a locking structure 50 to ensure that the battery compartment door 20 remains closed until the user unlocks the locking structure 50.

[0046] like Figure 8-9 The electric bicycle shown includes a bicycle body 60, wherein a side-opening battery compartment 61 is provided on the frame at the middle position of the bicycle body 60. Specifically, a side support leg 62 is installed on one side of the middle of the bicycle body 60, and the battery compartment door 63 is located away from the side support leg 62, so that the opening direction of the battery compartment door 63 is opposite to the tilting direction of the side support leg 62, making the vehicle more stable when opening and closing.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electric bicycle, characterized in that: Includes a bicycle body, and a side-opening battery compartment is provided on the frame at the middle position of the bicycle body; The side-opening battery compartment includes a battery compartment body, a battery compartment door, and a battery. The bottom of the battery compartment body is hinged to the bottom of the battery compartment door. The battery is placed inside the battery compartment body and installed on the battery compartment door. A damping elastic element is connected to one side of the battery compartment body and the battery compartment door. A limiting structure is provided between the two sides of the battery compartment body and the battery compartment door. The bicycle body has a side support foot on one side of the middle part, and the battery compartment door is located away from the side support foot. The angle between the line connecting the connection point of the battery compartment door and the battery compartment body and the connection point of the damping elastic element and the battery compartment body, and the direction of the elastic force of the damping elastic element, is in the range of 37.8°-57.3°.

2. An electric bicycle as described in claim 1, characterized in that: A battery tube is located near the bottom on one side of the battery compartment door, and the battery is placed in the battery tube. The limiting structure is located between the battery tube and the main body of the battery compartment.

3. An electric bicycle as described in claim 2, characterized in that: The limiting structure includes a limiting block and a limiting strip. The limiting block is installed on the inner side of the battery compartment body, and the limiting strip is set on the outer side of the battery tube. When the battery compartment door is fully opened, the limiting block and the limiting strip are in close contact.

4. An electric bicycle as described in claim 3, characterized in that: The limiting block is tilted, and the tilt angle of the limiting block is the same as the tilt angle when the battery compartment door is fully open. The length direction of the limiting strip is parallel to the height direction of the battery tube.

5. An electric bicycle as described in claim 2, characterized in that: The battery tube is provided with a wire clamp, and the battery compartment body is provided with a clearance groove corresponding to the position of the wire clamp and the position after it is moved. The wire clamp passes through the clearance groove and can move along the clearance groove.

6. An electric bicycle as described in claim 1, characterized in that: The damping elastic element is a gas spring. One end of the damping elastic element is hinged to the main body of the battery compartment, and the other end of the damping elastic element is hinged to the battery compartment door.

7. An electric bicycle as described in claim 1, characterized in that: A recessed handle is provided on the other side of the battery compartment door.

8. An electric bicycle as described in claim 1, characterized in that: The battery compartment door and the top of the battery compartment body are equipped with a locking mechanism.

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