Battery box

Abstract

The utility model relates to a battery box, the battery box is detachably assembled on a battery holder, the battery holder is fixed on a frame tube of a moped, the battery box comprises a shell, a base, a lock seat, a battery cell and a lock body, the lock seat is arranged on the base, the lock body is arranged in the lock seat, the shell is buckled above the base, the battery cell is arranged in the lock seat, and the battery cell is arranged in the shell. The shell is matched with the base to wrap the battery cell inside, and the base is mounted on the battery holder in a sliding manner; the lock body comprises a lock bolt, the lock bolt can ascend and descend in the lock seat, the lock bolt protrudes out of the bottom of the base, the lock bolt is provided with a self-locking guide face, the battery seat is provided with a locking groove, when the base is installed on the battery seat in a sliding mode, the self-locking guide face is squeezed by the battery seat, the lock bolt is lifted by pushing force, and when the lock bolt is aligned with the locking groove, the self-locking guide face is pushed by the battery seat. And the lock bolt is inserted into the locking groove.

Description

Technical Field

[0001] The utility model relates to the field of power-assisted bicycle parts, in particular to a battery box. Background Art

[0002] Power-assisted bicycles, especially electric-assisted bicycles, have become very popular in recent years due to their environmental friendliness, convenience, and health. These bicycles are usually equipped with a battery box to hold the batteries and provide power assistance to the rider. The battery box is usually installed on the outside of the bicycle frame tube to facilitate the rider to carry and replace the batteries. The battery box is fixed to the bicycle through a lock seat to prevent theft or falling during riding. In the prior art, the lock seat and the base of the battery box are designed separately, as shown in China Patent Publication No.: CN206098502U, a vehicle-mounted downtube side-pull battery box assembly. In this patent, the lock seat is set on the battery seat, and there is no component to protect the outside of the lock seat, which makes it easy for rainwater to enter the interior of the lock seat, thereby causing water to enter the battery box and causing the risk of battery circuit short circuit.

[0003] At the same time, when the base is installed on the battery holder, in the prior art, a key is required to unlock the lock core inside the lock seat before normal installation, and a key is required to lock it after installation, resulting in the need to use a key to unlock or lock each time the base is disassembled or installed, which is inconvenient for users. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a battery box.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: the present invention relates to a battery box, which can be detachably assembled on a battery seat, and the battery seat is fixed on the frame tube of the power-assisted bicycle. The battery box includes a shell, a base, a lock seat, a battery cell, and a lock body. The lock seat is arranged on the base, and the lock body is arranged inside the lock seat. The shell is buckled on the top of the base, and the shell cooperates with the base to wrap the battery cell inside. The base can be slidably installed on the battery seat; the lock body includes a lock bolt, and the lock bolt can be raised and lowered in the lock seat. The lock bolt protrudes from the bottom of the base. The lock bolt is provided with a self-locking guide surface, and the battery seat is provided with a locking groove. When the base is slidably installed on the battery seat, the self-locking guide surface is squeezed by the battery seat, and the lock bolt is lifted by the thrust. When the lock bolt is aligned with the locking groove, the lock bolt is inserted into the locking groove.

[0006] Preferably, a plurality of buckle seats are respectively provided on both sides of the base, and a plurality of buckle heads are provided on the shell. The shell is buckled and connected with the buckle seats through the buckle heads, so that the shell is buckled on the base.

[0007] Preferably, a receiving groove is provided on the base, the lock seat and the battery core are installed in the receiving groove, and the lock seat and the base are integrally formed.

[0008] Preferably, a slide groove is provided at the bottom of the base, and several first assembly blocks are provided on the two side walls of the slide groove, and an installation slide is provided between each of the first assembly blocks; the outer walls on both sides of the battery holder are provided with second assembly blocks that match and dock with the first assembly blocks.

[0009] Preferably, each of the first assembly blocks is provided with a first inclined surface, and each of the second assembly blocks is provided with a second inclined surface matching the first inclined surface. When the first assembly block is matched with the second assembly block, the first inclined surface will fit on the second inclined surface.

[0010] Preferably, the self-locking guide surface is a slope.

[0011] Preferably, the lock seat is provided with a lock core groove and a lock bolt groove, the lock core groove is arranged on the side of the lock seat, the lock bolt groove is arranged at the bottom of the lock seat, the lock bolt groove passes through the base, and the lock core groove is connected to the lock bolt groove.

[0012] Preferably, the lock body also includes a lock core, a top block is provided at one end of the lock core, and a groove is provided on the side of the lock bolt; the lock core is rotatably arranged in the lock core groove, and the lock bolt is liftable in the lock bolt groove, and the top block enters the groove for fitting connection. When the lock core is rotated, the top block rotates axially along the central axis of the lock core, and the top block causes the lock bolt to be lifted and lowered through the groove.

[0013] Preferably, it also includes a discharge female plug connected to the battery cell, the discharge female plug is exposed at the tail of the battery box, the connection terminal of the discharge female plug has a discharge fuse that melts when a current above a specified value flows through it, and the battery holder is provided with a plug installation cavity that wraps the discharge fuse.

[0014] Preferably, it also includes a charging interface connected to the battery cell, and a protective cover is provided on the charging interface.

[0015] The beneficial effect of the present invention is that: the present invention relates to a battery box, in which the lock seat and the base are integrated, the lock seat and the battery core are arranged on the base at the same time, and the lock seat and the battery core are wrapped inside at the same time by the outer shell cooperating with the base. The outer shell and the base are sealed by a dispensing process, and are sealed and fixed by both the dispensing process and the snap fastener, so as to prevent moisture from the external environment of the battery box from entering the interior of the battery box through the joint between the upper cover and the base, thereby improving the waterproof performance, helping to protect internal components, and increasing the service life of the battery box.

[0016] In the present invention, a self-locking guide surface is provided on the lock bolt. When the base slides into the battery holder, the self-locking guide surface is squeezed by the battery holder, causing the lock bolt to lift upward. When the lock bolt moves to align with the locking groove, the lock bolt will be inserted into the locking groove, so that the base will be fixed on the battery holder to complete the self-locking, and the installation steps can be completed without a key. The operation is simple and convenient, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the battery box of the present utility model.

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the battery box of the utility model.

[0019] Figure 3 It is a structural diagram of the shell of the utility model.

[0020] Figure 4 It is a schematic diagram of the utility model when the receiving groove of the base is facing upward.

[0021] Figure 5 It is a schematic diagram of the utility model when the slide groove of the base is facing upward.

[0022] Figure 6 This is a cross-sectional schematic diagram of the lock seat of the utility model

[0023] Figure 7 It is a structural schematic diagram of the lock body of the utility model.

[0024] Figure 8 It is a cross-sectional schematic diagram of the lock body of the utility model installed in the lock seat.

[0025] Figure 9 It is a structural schematic diagram of the battery holder of the utility model.

[0026] Figure 10 It is a schematic diagram of the base and battery holder of the utility model when they are installed.

[0027] Figure 11 This utility model Figure 10 A in the enlarged view.

[0028] Figure 12 It is a schematic diagram of the utility model after the base and the battery holder are installed.

[0029] Figure 13 This is a cross-sectional view of the base and battery holder of the utility model when they are installed and locked.

[0030] Figure 14 It is a cross-sectional view of the base and battery holder of the utility model after being installed and locked.

[0031] Reference numerals

[0032] 1. Housing; 11. Buckle head;

[0033] 2. Base; 21. Receiving slot; 211. Buckle seat; 22. Slide slot; 221. First assembly block; 222. First inclined surface; 223. Mounting slide; 23. Discharge female plug; 231. Discharge fuse; 24. Charging port; 25. Protective cover;

[0034] 3. Lock seat; 31. Lock cylinder slot; 32. Lock bolt slot;

[0035] 4. Battery cells;

[0036] 5. Lock body; 51. Lock cylinder; 511. Key port; 512. Top block; 52. Lock bolt; 521. Groove; 522. Self-locking guide surface;

[0037] 6. Battery holder; 61. Second assembly block; 62. Second inclined surface; 63. Locking groove; 64. Connecting hole; 65. Plug installation cavity. DETAILED DESCRIPTION

[0038] See also Figure 1-14 As shown, the utility model relates to a battery box, which is detachably assembled on a battery holder 6. The battery holder 6 is fixed to a frame tube (not shown) of a power-assisted bicycle. When the battery box is to be assembled on the battery holder 6, the battery box is first slid into the battery holder 6. When a key is not required for locking, the battery box can be locked by pushing it to a corresponding position. When the battery box is to be removed from the battery holder 6, the lock body 5 is opened with a key, and the battery box can be slid out of the battery holder 6 and removed.

[0039] Among them, the battery box includes a shell 1, a base 2, a lock seat 3, a battery cell 4, and a lock body 5. The lock seat 3 and the battery cell 4 are arranged on the base 2. The shell 1 is buckled on the top of the base 2. The shell 1 cooperates with the base 2 to wrap the battery cell 4 inside. The lock body 5 is arranged inside the lock seat 3. The lock body 5 includes a lock core 51 and a lock bolt 52. The lock core 51 drives the lock bolt 52 to protrude or embed at the bottom of the base 2. The battery seat 6 is fixed on the frame tube. The base 2 can be slidably installed on the battery seat 6. The lock bolt 52 is controlled by the lock core 51 to protrude from the base 2 and connect with the battery seat 6, so that the base 2 is fixed on the battery seat 6.

[0040] Furthermore, the base 2 is provided with a plurality of snap seats 211 on either side, and the housing 1 is provided with a plurality of snap heads 11 that match the snap seats 211. The housing 1 is fastened to the snap seats 211 via the snap heads 11, thereby securing the housing 1 to the base 2. In this embodiment, the housing 1 and base 2 are connected via a snap structure, whereas in the prior art, the housing 1 and base 2 are fixed with screws. For batteries of the same size, the snap structure allows the battery compartment to be designed with a sufficiently narrow width, ensuring that the width of the battery compartment is suitable for the rider's thigh size, leaving ample space on both sides of the frame tubes to prevent the thighs from colliding during cycling.

[0041] Because the current market generally uses screws to connect the upper cover 1 and the base 2, which cannot achieve a complete sealing effect, the present invention also uses a dispensing process to seal the outer shell 1 and the base 2. That is, sealant is applied at the junction of the outer shell 1 and the base 2. The seal and fixation are achieved by both dispensing and snapping, preventing moisture from the external environment of the battery box from entering the battery box through the junction of the upper cover 1 and the base 2, thereby improving the waterproof performance.

[0042] Furthermore, the bottom of the base 2 is provided with a slide groove 22 that slides along the battery holder 6. A plurality of first assembly blocks 221 are provided on the side walls of the slide groove 22. An installation slide 223 is provided between each of the first assembly blocks 221. Each of the first assembly blocks 221 has a first inclined surface 222. Second assembly blocks 61 that match the first assembly blocks 221 are provided on the outer walls of both sides of the battery holder 6. Each of the second assembly blocks 61 has a second inclined surface 62 that matches the first inclined surface 222.

[0043] During installation, the battery box is installed on the battery holder 6 through the slide groove 22. First, align the second assembly block 61 with the installation slide 223, control the base 2 to slide on the battery holder 6, so that the first assembly block 221 and the second assembly block 61 are close to each other, and finally, the first inclined surface 222 is fitted on the second inclined surface 62. Through the mutual force between the first inclined surface 222 and the second inclined surface 62, the battery box is not easy to fall off the battery holder 6.

[0044] Furthermore, the base 2 is provided with a receiving groove 21, into which the lock base 3 and the battery cell 4 are mounted. The lock base 3 and the base 2 are integrally formed. In this embodiment, after the housing 1 is snap-fitted onto the base 2, they together enclose a mounting cavity. The lock base 3 and the battery cell 4 are mounted on the base 2, and the housing 1 cooperates with the base 2 to simultaneously enclose the lock base 3 and the battery cell 4 within the mounting cavity.

[0045] The lock seat 3 is provided with a lock core groove 31 and a lock bolt groove 32. The lock core groove 31 is arranged on the side of the lock seat 3, and the lock bolt groove 32 is arranged at the bottom of the lock seat 3. The lock bolt groove 32 passes through the base 2, and the lock core groove 31 is connected to the lock bolt groove 32.

[0046] The lock core 51 is rotatably disposed within the lock core slot 31, and the lock bolt 52 is liftably disposed within the lock bolt slot 32. The lock core 51 is cylindrical, with a key slot 511 at one end for inserting a key. A top block 512 is located at the edge of the other end of the lock core 51 for driving the lock bolt 52 to move up and down. A groove 521 is provided on the side of the lock bolt 52. When the lock core 51 is positioned within the lock core slot 31 and the lock bolt 52 is positioned within the lock bolt slot 32, the top block 512 enters the groove 521. When the correct key is inserted through the key slot 511, the key drives the lock core 51 to rotate, and the top block 512 rotates axially along the central axis of the lock core 51. The top block 512 drives the groove 521, causing the lock bolt 52 to move up and down.

[0047] Furthermore, the battery holder 6 is provided with a locking groove 63 for the locking bolt 52 to enter. When the locking bolt 52 protrudes from the locking bolt groove 32, the locking bolt 52 is inserted into the locking groove 63, so that the base 2 is fixed to the battery holder 6; when the locking bolt 52 is retracted into the locking bolt groove 32, the base 2 and the battery holder 6 are released from fixation, and the base 2 can be slid out of the battery holder 6 for disassembly and replacement.

[0048] Furthermore, in the initial state, the locking bolt 52 protrudes from the locking bolt slot 32. In the present invention, the locking bolt 52 is provided with a self-locking guide surface 522, which can be an inclined surface or a circular arc surface. When the base 2 slides into the battery holder 6, the self-locking guide surface 522 is squeezed by the battery holder 6, causing the locking bolt 52 to be lifted upward. When the locking bolt 52 moves to align with the locking slot 63, the locking bolt 52 is inserted into the locking slot 63, and the base 2 cannot move. At this time, the base 2 is fixed to the battery holder 6 and self-locked. The locking bolt 52 needs to be lifted with a key to unlock and remove it.

[0049] In this embodiment, the battery box is provided with a charging interface 27 connected to the battery cell 4, and the charging interface is provided on the base 2. The charging interface 24 is exposed on one side of the battery box, and a protective cover 25 is provided on the charging interface 24, and the protective cover 25 is used to open or close the charging interface 24.

[0050] In this embodiment, a discharge female plug 23 extends from the rear of the battery case, connecting to the battery cell 4. A discharge male plug (not shown) electrically connected to the controller (not shown) is also located within the battery holder 6. When the battery case is assembled in the battery holder 6, the discharge male plug can be plugged into the discharge female plug 23. Specifically, the discharge female plug 23 is exposed at the rear of the battery case. When the base 2 slides into the battery holder 6, the battery holder 6 is provided with a plug mounting cavity 65 that encloses a discharge fuse 231. This cavity 65 encloses the discharge female plug 23. The connection terminal of the discharge female plug 23 has a discharge fuse 231 that melts when a current exceeding a specified value flows through it. Gas generated in the battery case due to overcharging, overdischarging, or internal or external short circuits can cause an increase in internal pressure, potentially rupturing the battery casing. Thus, even if a battery fails due to an internal short circuit, the discharge fuse 231 can only disconnect the battery causing the failure. This prevents degradation of the overall performance of a battery module with multiple batteries connected in parallel. The discharge fuse 231 is located outside the battery compartment, while the plug mounting cavity 65 protects the discharge fuse 231. Therefore, when replacing the discharge fuse 231, there is no need to remove the outer casing 1. This helps reduce subsequent maintenance steps and costs. The battery holder 6 is provided with a connection hole 64. During installation, the discharge female plug 23 is aligned with the connection hole 64, and the discharge female plug 23 is exposed on the surface of the battery compartment through the connection hole 64.

[0051] The present invention relates to a battery box, wherein a lock body 5 of the battery box locks the battery box in a frame tube to prevent the battery box from accidentally falling off or being stolen. The lock body 5 and the battery cell 4 in the existing battery box are in the same space, such as CN204197108U. In the present invention, the base 2 is integrally formed with a lock seat 3. The lock seat 3 is a part of the base 2 formed by a single mold or a continuous manufacturing process without seams or welding points. The lock seat 3 separates the interior of the battery box into two independent spaces. The lock seat 3 is an independent lock body 5 mounting cavity, and the area outside the lock seat 3 is a mounting cavity for the battery cell 4. The lock body 5 and the battery cell 4 are installed in the battery box, but in two independent mounting cavities, which improves the waterproof requirements of the battery box and helps to improve the sealing of the battery box. Because the seams and potential leakage points are reduced, moisture outside the battery box is not easy to enter the battery box through the lock body 5, thereby preventing water from damaging the battery cell 4 and improving the reliability and service life of the battery box.

[0052] In the prior art, the battery box can be removed by turning the lock body 5 back to the unlocked state with the key, and the battery box can be locked only when the key is turned to the locked state. In the present utility model, a self-locking guide surface 522 is provided on the lock bolt 52. When the base 2 slides into the battery holder 6, the self-locking guide surface 522 is squeezed by the battery holder 6, causing the lock bolt 52 to lift upward. When the lock bolt 52 moves to align with the locking groove 63, the lock bolt 52 will be inserted into the locking groove 63, so that the base 2 will be fixed on the battery holder 6 to complete self-locking, and the battery box can be locked in the frame tube without a key. The user only needs to use the key to unlock when removing the battery, and the battery box can be locked without a key when installing the battery box. The operation is simple and convenient, which improves the user experience.

[0053] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A battery box, which can be detachably assembled on a battery holder, and the battery holder is fixed to the frame tube of a power-assisted bicycle, characterized in that: The battery box includes a shell, a base, a lock seat, a battery cell, and a lock body. The lock seat is arranged on the base, and the lock body is arranged inside the lock seat. The shell is buckled on the top of the base, and the shell cooperates with the base to wrap the battery cell inside. The base can be slidably installed on the battery seat; the lock body includes a lock bolt, and the lock bolt can be raised and lowered in the lock seat. The lock bolt protrudes from the bottom of the base. The lock bolt is provided with a self-locking guide surface, and the battery seat is provided with a locking groove. When the base is slidably installed on the battery seat, the self-locking guide surface is squeezed by the battery seat, and the lock bolt is lifted by the thrust. When the lock bolt is aligned with the locking groove, the lock bolt is inserted into the locking groove.

2. A battery box according to claim 1, characterized in that: A plurality of buckle seats are respectively provided on both sides of the base, and a plurality of buckle heads are provided on the shell. The shell is buckled and connected with the buckle seats through the buckle heads, so that the shell is buckled on the base.

3. The battery box according to claim 1, wherein: The base is provided with a receiving groove, the lock seat and the battery core are installed in the receiving groove, and the lock seat and the base are integrally formed.

4. The battery box according to claim 1, wherein: A slide groove is provided at the bottom of the base, and a plurality of first assembly blocks are respectively provided on the two side walls of the slide groove, and an installation slide is provided between each of the first assembly blocks; second assembly blocks that match and dock with the first assembly blocks are provided on the two side outer walls of the battery holder.

5. A battery box according to claim 4, characterized in that: Each of the first assembly blocks is provided with a first inclined surface, and each of the second assembly blocks is provided with a second inclined surface matching the first inclined surface. When the first assembly block is matched with the second assembly block, the first inclined surface will fit on the second inclined surface.

6. The battery box according to claim 1, characterized in that: The self-locking guide surface is an inclined surface.

7. The battery box according to claim 1, characterized in that: The lock seat is provided with a lock core groove and a lock bolt groove. The lock core groove is arranged on the side of the lock seat, and the lock bolt groove is arranged at the bottom of the lock seat. The lock bolt groove passes through the base, and the lock core groove is connected to the lock bolt groove.

8. A battery box according to claim 7, characterized in that: The lock body also includes a lock core, a top block is provided at one end of the lock core, and a groove is provided on the side of the lock bolt; the lock core is rotatably arranged in the lock core groove, and the lock bolt is liftable in the lock bolt groove, and the top block enters the groove for fitting connection. When the lock core is rotated, the top block rotates axially along the central axis of the lock core, and the top block causes the lock bolt to be lifted and lowered through the groove.

9. The battery box according to claim 1, characterized in that: It also includes a discharge female plug connected to the battery cell, the discharge female plug is exposed at the tail of the battery box, the connection terminal of the discharge female plug has a discharge fuse that melts when a current above a specified value flows through it, and the battery holder is provided with a plug installation cavity that wraps the discharge fuse.

10. A battery box according to claim 9, characterized in that: It also includes a charging interface connected to the battery cell, and a protective cover is provided on the charging interface.

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