An electric bicycle lithium battery with waterproof structure

Abstract

The utility model belongs to the technical field of lithium batteries, and specifically relates to an electric bicycle lithium battery with a waterproof structure, comprising a battery shell, wherein a battery installation cavity is arranged in the battery shell, a sealing cover plate is placed at the opening of the battery installation cavity, a keyhole is arranged at the battery shell, and further comprises: a long frame body, which is arranged on the outer surface of the battery shell, and a plurality of sealing semi-cylinders and a single closed frame are arranged on the inner side, and the sealing semi-cylinder is located outside the closed frame; a baffle frame, which is arranged on the outer side of the keyhole, and a circular plate is arranged on the inner side for limiting sliding, a waterproof cloth is connected between the circular plate and the circular plate, and the two sides of the waterproof cloth are foldably sealed and connected with the inner wall thereof, so as to ensure the sealing between the battery shell and the sealing cover plate, and the sealing of the keyhole.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to an electric bicycle lithium battery with a waterproof structure. Background Art

[0002] With the development of my country's electric bicycle industry, various types of electric bicycles have emerged. Some of these electric bicycles have smaller batteries that can be installed on the frame between the bicycle head and the seat, making it easier to disassemble and assemble the battery. However, this installation method requires focused design of the waterproof part.

[0003] For example, the waterproof electric bicycle lithium battery casing of patent application number 201521075652.8 belongs to the field of lithium battery application. The technical problem to be solved is to provide an electric bicycle battery pack casing that prevents water from entering the battery pack. The technical scheme adopted is: the waterproof electric bicycle lithium battery casing comprises an upper cover, an upper cover sealing ring, an aluminum cylinder, a lower cover sealing ring and a lower cover, wherein the upper cover is arranged on the top of the aluminum cylinder, an upper cover sealing ring is provided at the connection between the upper cover and the aluminum cylinder, the lower cover is arranged at the bottom of the aluminum cylinder, and a lower cover sealing ring is provided at the connection between the lower cover and the aluminum cylinder; three lead holes are opened in the upper cover sealing ring for the wires of the lithium battery protection board to pass through, and sealing rubber rings are added at the three lead holes of the upper cover sealing ring. The utility model is applied to electric bicycle lithium batteries.

[0004] However, in the above scheme, the battery casing is in the form of a combination of multiple parts, which will produce relatively many gaps. Although sealing rubber rings are provided at the three holes of the upper cover sealing ring, the lower cover sealing ring and the upper cover sealing ring, water will still flow into the battery casing and affect the battery. In addition, the part with the keyhole in the prior art does not have a waterproof part, and water will flow into the keyhole, causing the battery to short-circuit and become unusable. Utility Model Content

[0005] The utility model overcomes the deficiencies of the prior art and solves the problems that the existing electric bicycle battery has insufficient waterproof effect and the key hole position is difficult to waterproof.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery for electric bicycle with a waterproof structure, comprising a battery shell, a battery installation cavity is arranged in the battery shell, a sealing cover plate is placed at the opening of the battery installation cavity, a keyhole is arranged at the battery shell, and also comprises: a long frame body, which is arranged on the outer surface of the battery shell, and a plurality of sealing semi-cylinders and a single closed frame are arranged on the inner side, and the sealing semi-cylinder is located outside the closed frame; a baffle frame, which is arranged on the outer side of the keyhole, and a circular plate is arranged on the inner side for limiting sliding, a waterproof cloth is connected between the circular plate and the circular plate, and the two sides of the waterproof cloth are foldably and sealedly connected to the inner wall.

[0007] Optionally, a portion extending outward is provided inside the closed frame.

[0008] Optionally, water outlets are symmetrically provided at the lower end of the long frame.

[0009] Optionally, the lower end of the long frame is high in the middle and low at both ends to facilitate water to flow toward the water outlet.

[0010] Optionally, the outer end of the sealing semi-cylinder is an inclined surface.

[0011] Optionally, magnets are installed on the inner sides of both ends of the baffle frame, and the outer side of the circular plate is made of iron, and the two cooperate to perform positioning.

[0012] Optionally, the outer surface of the battery housing is provided with a water shield at one end of the keyhole.

[0013] In summary, compared with the prior art, the beneficial effects of this solution are:

[0014] First, the gap between the cover plate and the battery shell is sealed. The initial seal is the long frame blocking the water flow. The secondary seal is the seal of several sealing semi-cylinders extending after being squeezed. The tertiary seal is the blocking of a small part of the inflowing water by the closed frame, and the blocked water can be discharged smoothly from the water outlet to achieve a perfect seal.

[0015] Secondly, the keyhole part is sealed. The initial sealing is done by a movable round plate and waterproof cloth combined with a baffle to seal and block the keyhole so that external water does not touch the keyhole. The secondary sealing is to block the keyhole with a water barrier to prevent water from flowing into the keyhole when the key is inserted into the keyhole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A magnified image of area A;

[0018] Figure 3 for Figure 1 Enlarged view of area B;

[0019] Figure 4 It is a schematic diagram of the positions of the baffle frame, the circular plate, the water baffle cover and the toggle block;

[0020] Figure 5 It is a schematic diagram of the positions of the retaining frame, the slot, the circular plate, the limiting ring, the semicircular notch and the waterproof cloth.

[0021] 1. Battery shell; 2. Cover plate; 3. Long frame; 4. Closing frame; 5. Sealing semi-cylinder; 6. Water outlet; 7. Baffle frame; 8. Slot; 9. Round plate; 10. Limiting ring; 11. Semi-circular notch; 12. Waterproof cloth; 13. Water shield; 14. Toggle block. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0023] Embodiment 1:

[0024] refer to Figure 1 A lithium battery for an electric bicycle with a waterproof structure includes a battery shell 1. One end of the battery shell 1 is set at a right angle. Both sides of the right angle end are planes parallel to each other. The two planes are set as one long and one short. The long plane is in contact with the inclined part of the frame, and the short plane faces outward. The end of the battery shell 1 away from the right angle end is set as an inclined surface.

[0025] The battery is specifically installed on the frame between the front and the seat of the bicycle. Since the frame at the installation location is in an inclined state, the battery is also in an inclined state after installation. The specific installation method is to fix the battery with bolts at both ends. A mounting hole is provided at the upper inclined surface of the battery housing 1. A mounting block is extended at the lower end of the battery housing 1. The mounting block also has a mounting hole. When installing, the bolt is passed through the mounting hole and matched with the screw hole on the frame to finally achieve the installation and fixation of the battery housing 1.

[0026] The battery housing 1 contains a battery mounting cavity, the opening of which is located on the long plane of the battery housing 1 , a cover plate 2 is placed at the opening of the battery mounting cavity, and the cover plate 2 is mounted on the battery housing 1 by bolts arranged at both ends thereof.

[0027] refer to Figure 3 A long frame 3 is provided on the long plane of the battery shell 1. The long frame 3 surrounds the outer side of the cover plate 2. A closed frame 4 is fixed inside the long frame 3. The closed frame 4 is at a certain distance from the long plane of the battery shell 1. A plurality of sealing semi-cylinders 5 are evenly provided on the inner side of the long frame 3. The sealing semi-cylinders 5 are located on the outer side of the closed frame 4, and the inner ends of the sealing semi-cylinders 5 abut against the closed frame 4.

[0028] Specifically, when the battery is installed, there is a slot corresponding to the long frame 3 on the bicycle frame. The long frame 3 is aligned with the position of the slot, and the long frame 3 is gradually inserted into the slot. During the insertion of the long frame 3, the sealing semi-cylinder 5 is gradually squeezed by the slot groove wall. After being squeezed, the sealing semi-cylinder 5 will deform into the gap between the sealing semi-cylinders 5. After the gap is filled, the sealing between the long frame 3 and the slot groove wall is guaranteed.

[0029] Since the sealing semi-cylinder 5 has a certain thickness, in order to facilitate the long frame 3 to be smoothly inserted into the slot, the outer end of the sealing semi-cylinder 5 is inclined and chamfered.

[0030] When the long frame 3 is gradually inserted into the slot, the closing frame 4 will touch the outer surface of the frame, so that even if some water flows in through the sealing semi-cylinder 5, the closing frame 4 can further block the water and prevent the water from flowing into the gap between the cover plate 2 and the battery installation cavity, thereby achieving complete sealing and waterproofing.

[0031] Furthermore, an outwardly extending portion is provided inside the closed frame 4. When water flows to the closed frame 4, the outwardly extending portion can block the water to a certain extent, and the water will flow down along the outwardly extending portion. A water outlet 6 is symmetrically provided at the bottom of the long frame 3, and water can be discharged from the water outlet 6 to prevent water accumulation. The lower end of the long frame 3 is high in the middle and low at both ends to facilitate water to flow to the water outlet 6.

[0032] A key hole is provided on one side of the battery housing 1. After the battery is installed, the battery can be turned on by inserting a key into the key hole, and the electric bicycle can be ridden at this time.

[0033] refer to Figure 2 , 4 5. A baffle frame 7 is provided on the side wall of the battery housing 1. One end of the baffle frame 7 is semicircular and the other end is square. The frame groove in the baffle frame 7 has semicircular shapes at both ends. A clamping groove 8 with the same shape is opened on the inner wall of the frame groove. A circular plate 9 is provided in the baffle frame 7. A limiting ring 10 is fixed on the outer side of the circular plate 9. The limiting ring 10 is slidably set in the clamping groove 8. The cooperation between the limiting ring 10 and the clamping groove 8 prevents the circular plate 9 from moving out of the baffle frame 7.

[0034] refer to Figure 2 A semicircular notch 11 is provided on the outer surface of the circular plate 9, and the square end surface of the baffle frame 7 is a square groove end, which is communicated with the frame groove in the baffle frame 7. A waterproof cloth 12 is arranged between the square groove end and the semicircular notch 11, and the two sides of the waterproof cloth 12 are foldably sealed and connected to the frame groove.

[0035] Magnets are installed in the semicircular shapes at both ends of the card slot 8, and the limiting rings 10 are made of iron. When the circular plate 9 slides to the two ends of the blocking frame 7, the limiting rings 10 move with the circular plate 9 to contact the magnets at both ends, and the magnets will position the circular plate 9 at the two ends of the blocking frame 7. When the circular plate 9 is positioned at the semicircular part of the blocking frame 7, the circular plate 9 and the waterproof cloth 12 can block the external water and prevent the water from flowing into the keyhole.

[0036] A toggle block 14 is fixed to the outer surface of the circular plate 9 , and the circular plate 9 can be easily moved by the toggle block 14 .

[0037] Embodiment 2:

[0038] refer to Figure 2 , 4 The difference from the first embodiment is that when the key is inserted into the keyhole, the round plate 9 will be removed, and there is no waterproof shielding here. In order to further waterproof, a water shield 13 is provided on the side wall of the battery housing 1. The water shield 13 is at the semicircular end of the baffle frame 7 to protect the keyhole.

[0039] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0040] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0041] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A lithium battery for an electric bicycle with a waterproof structure, comprising a battery housing (1), wherein the battery housing (1) contains a battery installation cavity, a cover plate (2) is placed at the opening of the battery installation cavity, and a keyhole is provided at the battery housing (1), characterized in that: Also includes: A long frame (3) is arranged on the outer surface of the battery housing (1), and a plurality of sealing semi-cylinders (5) and a single closed frame (4) are arranged inside the long frame (3), wherein the sealing semi-cylinders (5) are located outside the closed frame (4); The blocking frame (7) is arranged outside the keyhole, and a circular plate (9) is arranged inside for limiting sliding. A waterproof cloth (12) is connected between the circular plate (9), and the two sides of the waterproof cloth (12) are foldably and sealingly connected to the inner wall thereof.

2. The electric bicycle lithium battery with a waterproof structure according to claim 1, characterized in that: The inner side of the closed frame (4) is provided with a portion extending outwards.

3. The electric bicycle lithium battery with a waterproof structure according to claim 1, characterized in that: The lower end of the long frame (3) is symmetrically provided with water outlets (6).

4. The electric bicycle lithium battery with a waterproof structure according to claim 1, characterized in that: The lower end of the long frame (3) is arranged in a shape that is high in the middle and low at both ends to facilitate water to flow toward the water outlet (6).

5. The electric bicycle lithium battery with a waterproof structure according to claim 1, characterized in that: The outer end of the sealing semi-cylinder (5) is an inclined surface.

6. The lithium battery of an electric bicycle with a waterproof structure according to claim 1, characterized in that: Magnets are installed on the inner sides of both ends of the baffle frame (7), and the outer side of the circular plate (9) is made of iron, and the two cooperate to perform positioning.

7. The electric bicycle lithium battery with a waterproof structure according to claim 1, characterized in that: The outer surface of the battery housing (1) is provided with a water shield (13) located at one end of the key hole.

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