Small-size power battery pack and battery connecting structure

Abstract

The utility model discloses a small-size power battery pack and a battery connecting structure, the small-size power battery pack comprises a battery shell, a battery pack, a circuit board, a button cap and a display screen, the battery pack and the circuit board are arranged in the battery shell, and the button cap is clamped at the position of a mounting hole in the battery shell. A first sealing rubber ring in sealing connection with the button cap and the battery shell is arranged on the periphery of the mounting hole, the display screen is pasted on the battery shell through a double-faced adhesive tape, a second sealing rubber ring in sealing connection with the display screen and the battery shell is arranged on the periphery of the double-faced adhesive tape, and a button corresponding to the button cap is connected to the circuit board. And a connecting wire on the display screen penetrates through a threading hole in the battery shell and is electrically connected with the circuit board. By the adoption of the technical scheme, the second sealing rubber ring connected with the display screen and the battery shell in a sealed mode is arranged on the periphery of the double-faced adhesive tape, sealing and waterproof treatment can be conducted on the display screen mounting device, and therefore seepage water is prevented from entering the battery shell, and the failure rate of the power battery is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery-related technology, and in particular to a small-volume power battery pack and battery connection structure. Background Technology

[0002] A power battery pack generally includes a battery casing, a battery pack housed inside the battery casing, a button, and a display screen. The button is installed in the mounting hole on the battery casing, and the display screen is fixed to the battery casing. The connecting wires on the display screen pass through the wiring hole on the battery casing to enter the interior. Since there is generally no sealing treatment between the button and the battery casing, and between the display screen and the button casing, water can easily seep into the battery casing, leading to a high failure rate of the power battery. Therefore, how to design a power battery pack with good waterproof performance has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a small-volume power battery pack to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of this utility model, a small-volume power battery pack is designed, comprising: a battery casing, a battery pack and a circuit board disposed within the battery casing, a button cap, and a display screen. The button cap is snapped into a mounting hole on the battery casing, and a first sealing ring is provided around the mounting hole to seal the button cap and the battery casing. The display screen is attached to the battery casing with double-sided adhesive, and a second sealing ring is provided around the double-sided adhesive to seal the display screen and the battery casing. A button corresponding to the button cap is connected to the circuit board, and a connecting wire on the display screen passes through a wire hole on the battery casing and is electrically connected to the circuit board.

[0006] By adopting the above technical solution, a first sealing ring that seals and connects with the button cap and battery casing can be set around the mounting hole to achieve waterproof sealing of the button cap mounting position. A second sealing ring that seals and connects with the display screen and battery casing can be set around the double-sided adhesive to achieve waterproof sealing of the display screen mounting device, thereby preventing water from seeping into the battery casing and reducing the failure rate of the power battery.

[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0008] In some embodiments, a first groove is provided around the mounting hole, the first sealing ring is disposed within the first groove, and a first protrusion is provided on the button cap. The first protrusion is inserted into the first groove and is sealed and connected with the first sealing ring. This can further improve the sealing and waterproofing effect.

[0009] In some embodiments, the battery casing has a mounting groove, the double-sided adhesive is placed in the mounting groove and connected to the battery casing, a second groove is provided around the mounting groove, a second sealing ring is disposed in the second groove, and a second protrusion is provided on the display screen, the second protrusion is inserted into the second groove and sealed with the second sealing ring, and the double-sided adhesive is waterproof. This further improves the sealing and waterproofing effect.

[0010] In some embodiments, a snap-fit ​​protrusion is provided on the sidewall of the second groove, and a snap-fit ​​groove is provided on the sidewall of the second protrusion, with the snap-fit ​​protrusion engaging with the snap-fit ​​groove. This improves the stability of the display installation and prevents it from falling.

[0011] In some embodiments, the button cap is disposed in a first insertion slot on the battery housing, the display screen is disposed in a second insertion slot on the battery housing, the mounting hole and the first groove are disposed at the bottom of the first insertion slot, and the mounting slot and the second groove are disposed at the bottom of the second insertion slot.

[0012] In some embodiments, the battery casing has a snap-fit ​​groove on the right side, a positioning assembly groove on the left side, and a socket that is electrically connected to the circuit board.

[0013] In some embodiments, the battery casing includes a battery housing and a cover fixed to the battery housing by a plurality of screws, and a waterproof rubber ring is provided between the battery housing and the cover.

[0014] According to another aspect of this utility model, a battery connection structure is designed, including: a back frame housing and the aforementioned power battery pack. A charging / discharging interface is installed on one side of the back frame housing, and a plug electrically connected to the charging / discharging interface and a positioning assembly protrusion are installed on the other side. A locking component is provided at the right end of the back frame housing. When the positioning assembly groove on the power battery pack engages with the positioning assembly protrusion, and the socket engages with the plug, the locking head on the locking component engages with the locking groove on the power battery pack to connect the power battery pack to the back frame housing. When the locking component is in the unlocked state, the power battery pack can be removed.

[0015] In some embodiments, the locking assembly includes a hook bracket fixedly connected to the back frame housing, a movable hook component that slides laterally with the hook bracket, a spring disposed in a through groove on the hook bracket, and an end cap disposed above the hook bracket and fixedly connected to the movable hook component. The protrusion at the left end of the movable hook component is disposed in the through groove, the left end of the spring abuts against the protrusion, and the right end abuts against the side wall of the through groove. The movable hook component is provided with the locking head.

[0016] In some embodiments, the back frame housing includes a back frame shell and a back frame cover fixedly connected to the back frame shell, wherein a metal reinforcing plate is injection molded to the bottom of the back frame shell, and the hook bracket is fixedly connected to the metal reinforcing plate. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a small-volume power battery pack according to one embodiment of this utility model;

[0018] Figure 2 This is a structural schematic diagram of a small-volume power battery pack from another perspective.

[0019] Figure 3 This is a schematic diagram of the exploded structure of a small-volume power battery pack.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of a small-volume power battery pack.

[0021] Figure 5 This is a schematic diagram of the battery casing structure;

[0022] Figure 6 A schematic diagram of a battery connection structure according to one embodiment of this utility model;

[0023] Figure 7 This is a structural schematic diagram of the back frame shell;

[0024] Figure 8 This is a schematic diagram of the exploded structure of the back frame shell;

[0025] Figure 9 A schematic diagram showing the engagement state of the hook bracket, movable hook component, and spring;

[0026] Figure label:

[0027] 1. Battery casing; 1a. Battery casing; 1b. Cover; 10. Mounting hole; 11. First groove; 12. First insertion groove; 13. Mounting groove; 14. Second groove; 141. Snap-fit ​​protrusion; 15. Second insertion groove; 16. Snap-fit ​​groove; 17. Positioning assembly groove; 18. Socket; 2. Battery pack; 3. Circuit board; 31. Button; 4. Button cap; 41. Annular groove; 42. First protrusion; 5. Display screen; 5 1. Second protrusion; 511. Snap-fit ​​groove; 6. Double-sided adhesive; 7. Waterproof rubber ring; M1. First sealing rubber ring; M2. Second sealing rubber ring; 8. Back frame shell; 8a. Back frame shell; 8b. Back frame cover; 81. Charging / discharging interface; 82. Plug; 83. Positioning assembly protrusion; 9. Locking assembly; 91. Hook bracket; 92. Movable hook; 920. Clip head; 921. Protrusion; 93. Spring; 94. End cap. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Example 1

[0032] refer to Figures 1 to 5 As shown, the present invention provides a small-volume power battery pack, including: a battery casing 1, a battery pack 2 and a circuit board 3 disposed inside the battery casing 1, a button cap 4 and a display screen 5. The battery pack 2 is mainly composed of a battery mounting bracket and several battery units installed in the battery mounting bracket. The battery units are electrically connected to the circuit board 3. The battery units are lithium batteries or lead-acid batteries, etc. In this embodiment, the battery units are preferably lithium batteries. The circuit board 3 is fixed to the battery mounting bracket of the battery pack 2. The battery mounting bracket and the battery casing 1 are fixed together by long screws.

[0033] The button cap 4 is snapped into the mounting hole 10 on the battery housing 1. The button cap 4 is an elastic structural component made of silicone, silicone rubber or rubber. It has an annular groove 41. The edge of the mounting hole 10 on the battery housing 1 fits into the annular groove 41 on the button cap 4, so as to achieve the snap-fit ​​between the button cap 4 and the battery housing 1.

[0034] A first sealing ring M1 is provided around the mounting hole 10 to seal and connect with the button cap 4 and the battery housing 1. Further, a first groove 11 is provided around the mounting hole 10, and the first sealing ring M1 is located in the first groove 11. A first protrusion 42 is provided on the button cap 4, and the first protrusion 42 is inserted into the first groove 11 and sealed and connected with the first sealing ring M1. The first sealing ring M1 is formed by the curing of sealant (liquid glue or paste glue) injected into the first groove 11. The sealant is AB glue, silicone sealant, or polyurethane sealant.

[0035] A first insertion groove 12 is provided on the battery casing 1, a button cap 4 is provided in the first insertion groove 12 on the battery casing 1, and a mounting hole 10 and a first groove 11 are provided at the bottom of the first insertion groove 12.

[0036] The display screen 5 is attached to the battery casing 1 using double-sided adhesive 6. The double-sided adhesive 6 can be either non-waterproof or waterproof; in this embodiment, waterproof double-sided adhesive 6 is preferred. A second sealing ring M2 is provided around the double-sided adhesive 6 to seal and connect with the display screen 5 and the battery casing 1. Furthermore, the battery casing 1 has a mounting groove 13. The double-sided adhesive 6 is placed inside the mounting groove 13 and connected to the battery casing 1. The double-sided adhesive 6 covers the wire hole at the bottom of the mounting groove 13. A second groove 14 is provided around the mounting groove 13, and the second sealing ring M2 is located within the second groove 14. The display screen 5 is provided with a second protrusion 51, which is inserted into the second groove 14 and sealed with the second sealing ring M2. The second sealing ring M2 is formed by the curing of the sealant (liquid glue or paste glue) injected into the second groove 14. The sealant is AB glue, silicone sealant or polyurethane sealant. The outer sidewall and / or inner sidewall of the second groove 14 are provided with a snap-fit ​​protrusion 141, and the sidewall of the second protrusion 51 is provided with a snap-fit ​​groove 511. The snap-fit ​​protrusion 141 and the snap-fit ​​groove 511 are snap-fitted together.

[0037] The battery casing 1 is provided with a second insertion slot 15, the display screen 3 is located in the second insertion slot 15, and the mounting slot 13 and the second groove 14 are located at the bottom of the second insertion slot 15.

[0038] The circuit board 3 is connected to a button 31 corresponding to the button cap 4. Pressing the button cap 4 can trigger the button 31. The connecting wire on the display screen 5 passes through the wire hole at the bottom of the mounting slot 13 and is electrically connected to the circuit board 3. When the button cap 4 is pressed to trigger the button 31, the circuit board 3 controls the display screen 5 to light up and display the remaining power. After the set time is displayed, the circuit board 3 controls the display screen 5 to turn off the display.

[0039] The battery casing 1 has a snap-fit ​​groove 16 on the right side, a positioning assembly groove 17 on the left side, and a socket 18 that is electrically connected to the circuit board 3.

[0040] The battery casing 1 includes a battery housing 1a and a cover 1b that is fixed to the battery housing 1a by multiple screws. A waterproof rubber ring 7 is provided between the battery housing 1a and the cover 1b.

[0041] Example 2

[0042] refer to Figures 1 to 9 As shown, the present invention provides a battery connection structure, including: a back frame housing 8 and a power battery pack 100 as described in Embodiment 1. A charging and discharging interface 81 is installed on one side of the back frame housing 8, and a plug 82 electrically connected to the charging and discharging interface 81 is installed on the other side, as well as a positioning assembly protrusion 83. A locking component 9 is provided at the right end of the back frame housing 8. When the positioning assembly groove 17 on the power battery pack 100 cooperates with the positioning assembly protrusion 83, and the socket 18 on the power battery pack 2 cooperates with the plug 82, the locking head 920 on the locking component 9 engages with the locking groove 16 on the power battery pack 100 to connect the power battery pack 100 and the back frame housing 8 together. When the locking component 9 is in the unlocked state, the power battery pack 2 can be removed from the back frame housing 8.

[0043] Locking assembly 9 includes a hook bracket 91 fixedly connected to the back frame housing 8, a movable hook 92 that slides laterally with the hook bracket 91, a spring 93 disposed in a through groove on the hook bracket 91, and an end cap 94 disposed above the hook bracket 91 and fixedly connected to the movable hook 92. The protrusion 921 at the left end of the movable hook 92 is disposed in the through groove on the hook bracket 91. There is one or two springs 93, with the left end of the spring 93 abutting against the protrusion 921 and the right end abutting against the through groove. The slot sidewall abuts against the movable hook 92, which is provided with the locking head 920. When the power battery pack 100 is connected to the back frame housing 8, pulling the movable hook 92 to the right moves it to the right, which can disengage the locking head 920 on the movable hook 92 from the locking slot 16 on the power battery pack 100, so that the locking component 9 is in the unlocked state. At this time, the spring 93 is compressed. When the movable hook 92 is released, the movable hook 92 moves to the left to reset under the drive of the spring 93.

[0044] The back frame housing 8 includes a back frame housing 8a and a back frame cover 8b fixedly connected to the back frame housing 8a. A metal reinforcing plate 84 is injection molded to the bottom of the back frame housing 8a. The metal reinforcing plate 84 is made of aluminum plate, aluminum alloy plate, stainless steel plate, etc. The hook bracket 91 is fixedly connected to the metal reinforcing plate, and the connection strength between the hook bracket and the back frame housing is improved by the metal reinforcing plate.

[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A small-volume power battery pack, characterized in that, include: The device comprises a battery casing, a battery pack and circuit board disposed within the battery casing, a button cap, and a display screen. The button cap is snapped into a mounting hole on the battery casing. A first sealing ring is provided around the mounting hole to seal the button cap and the battery casing. The display screen is attached to the battery casing with double-sided adhesive. A second sealing ring is provided around the double-sided adhesive to seal the display screen and the battery casing. A button corresponding to the button cap is connected to the circuit board. A connecting wire on the display screen passes through a wire hole on the battery casing and is electrically connected to the circuit board.

2. The small-volume power battery pack according to claim 1, characterized in that, A first groove is provided around the mounting hole, and the first sealing ring is provided in the first groove. A first protrusion is provided on the button cap, and the first protrusion is inserted into the first groove and sealed with the first sealing ring.

3. A small-volume power battery pack according to claim 2, characterized in that, The battery casing is provided with an installation groove, and the double-sided adhesive is placed in the installation groove to connect with the battery casing. A second groove is provided around the installation groove, and a second sealing ring is provided in the second groove. A second protrusion is provided on the display screen, and the second protrusion is inserted into the second groove and sealed with the second sealing ring. The double-sided adhesive is waterproof.

4. A small-volume power battery pack according to claim 3, characterized in that, The second groove has a snap-fit ​​protrusion on its side wall and a snap-fit ​​groove on its side wall, and the snap-fit ​​protrusion engages with the snap-fit ​​groove.

5. A small-volume power battery pack according to claim 3, characterized in that, The button cap is located in a first insertion slot on the battery casing, the display screen is located in a second insertion slot on the battery casing, the mounting hole and the first groove are located at the bottom of the first insertion slot, and the mounting slot and the second groove are located at the bottom of the second insertion slot.

6. A small-volume power battery pack according to claim 1, characterized in that, The battery casing has a snap-fit ​​groove on the right side, a positioning assembly groove on the left side, and a socket that is electrically connected to the circuit board.

7. A small-volume power battery pack according to claim 1, characterized in that, The battery casing includes a battery housing and a cover that is fixed to the battery housing by multiple screws, and a waterproof rubber ring is provided between the battery housing and the cover.

8. A battery connection structure, characterized in that, include: The back frame housing and the power battery pack according to any one of claims 1 to 7 are provided. One side of the back frame housing is equipped with a charging and discharging interface, and the other side is equipped with a plug that is electrically connected to the charging and discharging interface and a positioning assembly protrusion. A locking component is provided at the right end of the back frame housing. When the positioning assembly groove on the power battery pack cooperates with the positioning assembly protrusion and the socket cooperates with the plug, the locking head on the locking component engages with the locking groove on the power battery pack to connect the power battery pack to the back frame housing. When the locking component is in the unlocked state, the power battery pack can be removed.

9. A battery connection structure according to claim 8, characterized in that, The locking assembly includes a hook bracket fixedly connected to the back frame housing, a movable hook component that slides laterally with the hook bracket, a spring disposed in a through groove on the hook bracket, and an end cap disposed above the hook bracket and fixedly connected to the movable hook component. The protrusion at the left end of the movable hook component is disposed in the through groove, the left end of the spring abuts against the protrusion, and the right end abuts against the side wall of the through groove. The movable hook component is provided with the locking head.

10. A battery connection structure according to claim 9, characterized in that, The back frame housing includes a back frame shell and a back frame cover fixedly connected to the back frame shell. A metal reinforcing plate is injection molded to the bottom of the back frame shell, and the hook bracket is fixedly connected to the metal reinforcing plate.

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