Waterproof structure of lithium battery pack

Abstract

The utility model relates to the technical field of lithium battery pack equipment, and discloses a lithium battery pack waterproof structure which comprises a battery pack box, a lithium battery pack is arranged on the bottom wall of the inner wall of the battery pack box, a transverse plate is fixedly connected to the bottom wall of the battery pack box, a rotating rod is rotatably connected to the back face of a pressing plate, and the surface of the rotating rod is fixedly sleeved with the pressing plate. The front face of the limiting groove block is fixedly connected with the limiting groove block, and the inner wall of the limiting groove block is matched with the surface of the pressing plate. During disassembly, the pull plate is pulled to move by utilizing the pull disc, the pull plate moves to drive the insertion plate to move away from the fixing groove to cancel fixation of the pressing plate, and the pressing plate is inserted into the limiting groove block after the pressing plate is pressed above the top cover, and then the insertion plate is pushed to move into the fixing groove and then penetrates through the upper moving plate to move into the placing groove to fix the pressing plate. And then the pressing plate is rotated to be far away from the battery pack box to sequentially pull out the top cover and the sealing plate, so that the equipment has the effect of conveniently disassembling the top cover and is convenient to overhaul and replace.

Description

Technical Field

[0001] The present application belongs to the technical field of lithium battery pack equipment, and specifically to a waterproof structure of a lithium battery pack. Background Art

[0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, many cycles and long storage time. They are widely used not only in portable electronic devices such as mobile phones, digital cameras and laptops, but also in large and medium-sized electric equipment such as electric vehicles, electric bicycles and power tools.

[0003] Referring to CN209592095U, a lithium battery pack waterproof structure includes: an upper cover, a lower shell, a lithium-ion battery assembly, and a sealing ring, wherein the lithium-ion battery assembly is arranged in the lower shell, the lithium-ion battery assembly is composed of a plurality of battery cells, and the battery cells are grouped in parallel or in series; the lithium-ion battery assembly is connected to a protective circuit board; the open end face of the lower shell is provided with a sealing groove capable of accommodating the sealing ring, and ultrasonic welding is used to form a sealed cavity between the upper cover and the lower shell. The lithium battery pack waterproof structure provided by the utility model has a simple and compact structure, can effectively save the reserved space of the battery pack, reduce the volume of the equipment, improve the specific energy, and is easy to assemble, and is suitable for large-scale production.

[0004] However, the following problem still exists: the top cover of the lithium battery pack box of the device is usually fixed with bolts, and the top cover is usually opened with external tools, which makes it inconvenient to open the box when inspecting or replacing the battery, affecting the inspection and replacement speed. Utility Model Content

[0005] The purpose of the present application is to provide a waterproof structure for a lithium battery pack in order to solve the problem that the top cover of the lithium battery pack box of the above-mentioned device is usually fixed with bolts, and the top cover is usually opened by external tools, which makes it inconvenient to open the box when inspecting or replacing batteries, affecting the speed of inspection and replacement.

[0006] The technical solution adopted in the present application is as follows: a lithium battery pack waterproof structure, including a battery pack box, a bottom wall of the inner wall of the battery pack box is provided with a lithium battery pack, a side of the battery pack box is fixedly connected with a horizontal plate, the back of the horizontal plate is rotatably connected with a rotating rod, the surface of the rotating rod is fixedly sleeved with a pressing plate, the front of the battery pack box is fixedly connected with a limiting slot block, the inner wall of the limiting slot block is adapted to the surface of the pressing plate, the side of the limiting slot block is fixedly connected with the limiting plate, the back of the limiting plate is fixedly connected with a spring, the end of the spring away from the limiting plate is fixedly connected with a driving plate, the driving plate is fixedly connected with a plug plate on the side close to the battery pack box, a fixing slot is provided on the front of the pressing plate, and the inner wall of the fixing slot is adapted to the plug plate.

[0007] By adopting the above technical scheme, the rubber pressure plate is first pressed into the inner wall of the battery box, and then the protrusion is engaged in the card slot to seal the battery box, and then the top cover is closed on the top of the rubber pressure plate. At this time, the rubber pressure plate is attached to the inner wall of the battery box to prevent water from entering, and then the pressure plate is rotated to be pressed on the top of the top cover. After being pressed on the top of the top cover, the pressure plate is inserted into the limit slot block, and then the plug-in plate is pushed to move into the fixed slot, and then moved into the placement slot by passing through to fix the pressure plate. When disassembling, the pull plate is pulled by the pull plate to move, and the movement of the pull plate drives the plug-in plate to move away from the fixed slot to cancel the fixation of the pressure plate, and then the pressure plate is rotated away from the battery box to pull out the top cover and the sealing plate in turn, so that the device has the effect of facilitating the removal of the top cover and facilitating maintenance and replacement.

[0008] In a preferred embodiment, the back side of the limit plate is fixedly connected to a limit rod, one end of the limit rod away from the limit plate passes through the front side of the driving plate, and a spring is sleeved on the surface of the limit rod.

[0009] By adopting the above technical solution and providing a limit rod, the occurrence of deviation caused by the spring being squeezed can be reduced.

[0010] In a preferred embodiment, a top cover is provided above the battery pack box, and a rubber pressing plate is fixedly connected to the lower surface of the top cover.

[0011] By adopting the above technical solution and arranging the rubber pressure plate, the inner wall of the battery pack box can be closely attached, thereby reducing the occurrence of water entering through the connection gap.

[0012] In a preferred embodiment, a card slot is formed on the inner wall of the battery pack box, a sealing plate is provided on the inner wall of the battery pack box, a protrusion is fixedly connected to the surface of the sealing plate, and the protrusion is adapted to the inner wall of the card slot.

[0013] By adopting the above technical solution and providing the card slot, the sealing plate can be fixed to the inner wall of the battery pack box in cooperation with the protrusion to seal the inner wall of the battery pack box.

[0014] In a preferred embodiment, one end of the plug plate away from the limiting groove block is fixedly connected to a pull plate, and one side of the pull plate away from the plug plate is fixedly connected to a pull plate.

[0015] By adopting the above technical solution and providing a pull plate, it is convenient for the user to pull the plug plate through the pull plate to move it away from the inner wall of the fixing groove to cancel the fixation of the pressure plate.

[0016] In a preferred embodiment, the number of the pressing plates is two, and the two pressing plates are symmetrically arranged on both sides of the side surface of the battery pack box with the vertical center line of the side surface of the battery pack box as the symmetry axis.

[0017] By adopting the above technical solution and arranging two pressing plates, the pressing and fixing of the top cover can be strengthened.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0019] 1. In the present application, the rubber pressure plate is first pressed into the inner wall of the battery box, and then the protrusion is engaged in the card slot to seal the battery box, and then the top cover is closed on the top of the rubber pressure plate. At this time, the rubber pressure plate is attached to the inner wall of the battery box to prevent water from entering, and then the pressure plate is rotated to be pressed on the top of the top cover. After being pressed on the top of the top cover, the pressure plate is inserted into the limit slot block, and then the plug-in plate is pushed to move into the fixed slot, and then moved into the placement slot by passing through to fix the pressure plate. When disassembling, the pull plate is pulled to move, and the movement of the pull plate drives the plug-in plate to move away from the fixed slot to cancel the fixation of the pressure plate. Then the pressure plate is rotated away from the battery box to pull out the top cover and the sealing plate in turn, so that the device has the effect of easy removal of the top cover, which is convenient for inspection and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the top cover and the sealing plate of the present application after being exploded;

[0021] Figure 2 It is a right view structural schematic diagram of this application;

[0022] Figure 3 This is a left-side structural schematic diagram of the present application;

[0023] Figure 4 This is a schematic diagram of the top structure of the present application.

[0024] Markings in the figure: 1. battery pack box; 2. limit slot block; 3. pressure plate; 4. top cover; 5. limit plate; 6. spring; 7. driving plate; 8. limit rod; 9. pull plate; 10. pull plate; 11. plug plate; 12. fixing slot; 13. horizontal plate; 14. rubber pressure plate; 15. sealing plate; 16. bump; 17. lithium battery pack; 18. rotating rod; 19. placement slot; 20. card slot. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Reference Figure 1-4 ,

[0027] Example:

[0028] Reference Figure 2-4 The lithium battery pack waterproof structure comprises a battery pack box 1, a lithium battery pack 17 is arranged on the bottom wall of the inner wall of the battery pack box 1, a horizontal plate 13 is fixedly connected to the side of the battery pack box 1, a rotating rod 18 is rotatably connected to the back of the horizontal plate 13, a pressing plate 3 is fixedly sleeved on the surface of the rotating rod 18, a limiting groove block 2 is fixedly connected to the front of the battery pack box 1, the inner wall of the limiting groove block 2 is adapted to the surface of the pressing plate 3, a limiting plate 5 is fixedly connected to the side of the limiting groove block 2, and a limiting plate 5 is fixedly connected to the back of the limiting plate 5 There is a spring 6, and the end of the spring 6 away from the limit plate 5 is fixedly connected to a driving plate 7, and the side of the driving plate 7 close to the battery box 1 is fixedly connected to a plug plate 11. A fixing groove 12 is opened on the front of the pressing plate 3, and the inner wall of the fixing groove 12 is adapted to the plug plate 11. When disassembling, the pull plate 10 is used to pull the pulling plate 9 to move, and the movement of the pulling plate 9 drives the plug plate 11 to move away from the fixing groove 12 to cancel the fixation of the pressing plate 3, and then the pressing plate 3 is rotated away from the battery box 1 to pull out the top cover 4 and the sealing plate 15 in turn.

[0029] Reference Figure 2-3 The back of the limit plate 5 is fixedly connected to a limit rod 8, one end of the limit rod 8 away from the limit plate 5 passes through the front of the driving plate 7, and the spring 6 is sleeved on the surface of the limit rod 8. By setting the limit rod 8, the occurrence of deviation caused by the spring 6 being squeezed can be reduced.

[0030] Reference Figure 1-4 A top cover 4 is provided above the battery pack box 1, and a rubber pressing plate 14 is fixedly connected to the lower surface of the top cover 4. By providing the rubber pressing plate 14, the inner wall of the battery pack box 1 can be closely attached to reduce the occurrence of water entering through the connection gap.

[0031] Reference Figure 1-3 A card slot 20 is provided on the inner wall of the battery pack box 1, and a sealing plate 15 is provided on the inner wall of the battery pack box 1. A protrusion 16 is fixedly connected to the surface of the sealing plate 15, and the protrusion 16 is adapted to the inner wall of the card slot 20. By providing the card slot 20, the sealing plate 15 can be fixed to the inner wall of the battery pack box 1 in cooperation with the protrusion 16 to close the inner wall of the battery pack box 1.

[0032] Reference Figure 2-4 The end of the plug plate 11 away from the limiting groove block 2 is fixedly connected to the pull plate 9, and the side of the pull plate 9 away from the plug plate 11 is fixedly connected to the pull plate 10. By setting the pull plate 10, it is convenient for the user to pull the plug plate 11 through the pull plate 9 to move away from the inner wall of the fixing groove 12 to cancel the fixation of the pressure plate 3.

[0033] Reference Figure 1-2There are two pressing plates 3, and the two pressing plates 3 are symmetrically arranged on both sides of the side of the battery box 1 with the vertical center line of the side of the battery box 1 as the symmetry axis. By setting two pressing plates 3, they can be pressed on top of the top cover 4 to strengthen the pressing and fixing of the top cover 4.

[0034] The implementation principle of the lithium battery waterproof structure embodiment of the present application is as follows: first, the rubber pressure plate 14 is pressed into the inner wall of the battery box 1, and then the protrusion 16 is engaged in the card slot 20 to seal the battery box 1, and then the top cover 4 is covered on the top of the rubber pressure plate 14. At this time, the rubber pressure plate 14 is attached to the inner wall of the battery box 1 to prevent waterproof entry, and then the pressure plate 3 is rotated to be pressed on the top of the top cover 4. After being pressed on the top of the top cover 4, the pressure plate 3 is inserted into the limiting groove block 2, and then the plug plate 11 is pushed to move into the fixed groove 12, and then moved into the placement groove 19 by passing through to fix the pressure plate 3. When disassembling, the pull plate 10 is used to pull the pull plate 9 to move, and the movement of the pull plate 9 drives the plug plate 11 to move away from the fixed groove 12 to cancel the fixation of the pressure plate 3, and then the pressure plate 3 is rotated away from the battery box 1 to pull out the top cover 4 and the sealing plate 15 in turn, so that the device has the effect of facilitating the removal of the top cover 4 and facilitating maintenance and replacement.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A lithium battery pack waterproof structure, comprising a battery pack box (1), wherein a lithium battery pack (17) is arranged on the bottom wall of the inner wall of the battery pack box (1), characterized in that: The side of the battery pack box (1) is fixedly connected to a transverse plate (13), the back of the transverse plate (13) is rotatably connected to a rotating rod (18), the surface of the rotating rod (18) is fixedly sleeved with a pressing plate (3), the front of the battery pack box (1) is fixedly connected to a limiting slot block (2), the inner wall of the limiting slot block (2) is matched with the surface of the pressing plate (3), the side of the limiting slot block (2) is fixedly connected to a limiting plate (5), the back of the limiting plate (5) is fixedly connected to a spring (6), the end of the spring (6) away from the limiting plate (5) is fixedly connected to a driving plate (7), the side of the driving plate (7) close to the battery pack box (1) is fixedly connected to an inserting plate (11), the front of the pressing plate (3) is provided with a fixing slot (12), the inner wall of the fixing slot (12) is matched with the inserting plate (11).

2. The lithium battery pack waterproof structure according to claim 1, characterized in that: The back side of the limit plate (5) is fixedly connected to a limit rod (8), one end of the limit rod (8) away from the limit plate (5) penetrates the front side of the driving plate (7), and the spring (6) is sleeved on the surface of the limit rod (8).

3. The lithium battery pack waterproof structure as claimed in claim 1, characterized in that: A top cover (4) is provided above the battery pack box (1), and a rubber pressing plate (14) is fixedly connected to the lower surface of the top cover (4).

4. The lithium battery pack waterproof structure as claimed in claim 1, characterized in that: The inner wall of the battery pack box (1) is provided with a slot (20), the inner wall of the battery pack box (1) is provided with a sealing plate (15), a surface of the sealing plate (15) is fixedly connected with a protrusion (16), and the protrusion (16) is adapted to the inner wall of the slot (20).

5. The lithium battery pack waterproof structure as claimed in claim 1, characterized in that: One end of the plug plate (11) away from the limiting slot block (2) is fixedly connected to a pull plate (9), and one side of the pull plate (9) away from the plug plate (11) is fixedly connected to a pull plate (10).

6. The lithium battery pack waterproof structure as claimed in claim 1, characterized in that: The number of the pressing plates (3) is two, and the two pressing plates (3) are symmetrically arranged on both sides of the side of the battery pack box (1) with the vertical center line of the side of the battery pack box (1) as the symmetry axis.

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