A lithium battery casing

Abstract

This utility model discloses a lithium battery casing, relating to the field of battery technology. It includes a casing body with a top plate fixed to its top by bolts. Flanges are fixed to both sides of the upper surface of the top plate. This utility model, by setting up a top plate, flanges, an extension cover, ventilation slots, and a fan duct, forms a heat dissipation channel for the lithium battery casing. This allows air to circulate inside and outside the casing body, ensuring stable heat dissipation of the internal lithium battery cells. Furthermore, the fan duct is a rotatable structure. When a single lithium battery is used, the fan duct directly circulates air with the outside environment, operating in a low-power mode to achieve energy saving. When multiple lithium batteries are stacked, the fan duct circulates air with the outside environment through the channels between the flanges, ensuring effective heat dissipation for the stacked lithium batteries and thus guaranteeing stable operation of multiple lithium battery packs.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a lithium battery casing. Background Technology

[0002] As is known in the industry, a lithium battery consists of a casing, lithium battery cells housed within the casing cavity, and a cover plate. Due to its advantages such as large capacity, light weight, long service life, high energy density, no memory effect, low self-discharge rate, and environmental friendliness, lithium batteries are highly valued by the industry and widely used in electric vehicles, electric bicycles, and even various hardware tools.

[0003] In the existing technology, lithium batteries generally adopt a modular design, which can be used individually or in combination. However, when multiple lithium batteries are used in combination, in order to reduce their volume, they are usually stacked. However, after multiple lithium batteries are stacked, their heat dissipation is affected to a certain extent, which poses a risk of overheating and fire.

[0004] Therefore, it is necessary to invent a lithium battery casing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery casing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery casing, comprising a casing body, a top plate fixed to the top of the casing body by bolts, flanges fixed to both sides of the upper surface of the top plate, an extension cover fixed to the middle of the top plate, and the bottom end of the extension cover being located inside the casing body, multiple ventilation slots penetrating the bottom ends of the inner walls on both sides of the extension cover, fan rows provided to the top ends of the inner walls on both sides of the extension cover, connecting seats fixed to the sides of the two fan rows that are far apart from each other, and the two connecting seats are rotatably connected to the top ends of the inner walls on both sides of the extension cover by pins, multiple fans fixed to the middle of the two fan rows, and the fans in the middle of the two fan rows rotate in opposite directions, a fixed cover fixed to the middle of the extension cover, a pressure seat slidably provided inside the fixed cover, a strip-shaped sliding groove penetrating both sides of the fixed cover, a sliding rod fixed to the bottom end of the pressure seat, and the sliding rod slidably located inside the sliding groove.

[0007] Preferably, a top spring is fixedly provided on the lower surface of the slide rod, and the top spring is fixedly provided inside the slide groove.

[0008] Preferably, both ends of the slide rod are fixedly provided with movable seats, the inner side of the movable seats is fixedly provided with movable rods, the middle of the side of the fan array near the fixed cover is fixedly provided with a movable frame, and the movable rod is slidably disposed inside the movable frame.

[0009] Preferably, a lithium battery cell is fixedly installed inside the main body of the housing, and the lithium battery cell is located below the extension cover.

[0010] Preferably, the top two sides of the housing body are provided with handles that can be rotatably mounted via pins.

[0011] Preferably, positioning grooves are provided on both sides of the lower surface of the housing body, and the two positioning grooves are respectively adapted to the two flanges.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model sets up a top plate, flange, extension cover, ventilation slot and fan duct. The extension cover, ventilation slot and fan duct form a heat dissipation channel for the lithium battery shell, which allows air to circulate inside and outside the shell body to ensure stable heat dissipation of the internal lithium battery cells. In addition, the fan duct is designed to be rotatable. When the lithium battery is used alone, the fan duct directly circulates air with the outside and can operate in a low power mode to achieve energy saving. When multiple lithium batteries are stacked, the fan duct can circulate air with the outside through the channel between the flanges. At this time, the heat dissipation effect of multiple lithium batteries stacked can be guaranteed, thereby ensuring the stable operation of multiple sets of lithium batteries.

[0014] 2. This utility model includes a fixed cover, a pressure seat, a sliding rod, a movable rod, and a movable frame. The pressure seat is located above the fixed cover. When a lithium battery is used alone, the pressure seat and the sliding rod move upward under the action of a top spring. The movable rod drives the fan array to move upward through the movable frame, causing the fan array to rotate diagonally upward to expand its air guiding range. When multiple lithium batteries are stacked, the pressure seat is squeezed downward by the lithium batteries above and inserted, thereby realizing the automatic adjustment of the fan array angle to avoid the fan array interfering with the stacking of multiple lithium batteries, thus facilitating the flexible use of lithium batteries. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a bottom view of the overall structure of this utility model.

[0017] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the fan exhaust structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the fan array structure of this utility model in its unfolded state.

[0020] In the diagram: 1. Main body of the housing; 2. Top plate; 3. Flange; 4. Extension cover; 5. Ventilation slot; 6. Fan exhaust; 7. Connecting seat; 8. Fixing cover; 9. Pressure seat; 10. Slide groove; 11. Slide rod; 12. Top spring; 13. Movable seat; 14. Movable rod; 15. Movable frame; 16. Lithium battery cell; 17. Positioning slot; 18. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figure 1-5 The lithium battery casing shown includes a casing body 1. A top plate 2 is fixed to the top of the casing body 1 by bolts. Flanges 3 are fixed to both sides of the upper surface of the top plate 2. An extension cover 4 is fixed to the middle of the top plate 2, and the bottom end of the extension cover 4 is located inside the casing body 1. Multiple ventilation slots 5 are provided through the bottom ends of the inner walls on both sides of the extension cover 4. Fan rows 6 are provided at the top of the inner walls on both sides of the extension cover 4. Connecting seats 7 are fixed to the sides of the two fan rows 6 that are far apart from each other. The two connecting seats 7 are rotatably connected to the top of the inner walls on both sides of the extension cover 4 by pins. Multiple fans are fixed to the middle of the two fan rows 6, and the fans in the middle of the two fan rows 6 rotate in opposite directions. It should be noted that a dustproof net is provided on the outside of the fan rows 6 to prevent dust from entering the device.

[0023] A fixed cover 8 is fixedly installed in the middle of the extension cover 4. A pressure seat 9 is slidably installed inside the fixed cover 8. A strip-shaped sliding groove 10 is provided through both sides of the fixed cover 8. A sliding rod 11 is fixedly installed at the bottom end of the pressure seat 9 and is slidably installed inside the sliding groove 10. A top spring 12 is fixedly installed on the lower surface of the sliding rod 11 and is fixedly installed inside the sliding groove 10. Movable seats 13 are fixedly installed at both ends of the sliding rod 11. A movable rod 14 is fixedly installed on the inner side of the movable seat 13. A movable frame 15 is fixedly installed in the middle of the side of the fan 6 near the fixed cover 8. The movable rod 14 is slidably installed inside the movable frame 15. A lithium battery cell 16 is fixedly installed inside the main body 1 of the housing and is located below the extension cover 4. It should be noted that the lithium battery cell 16 adopts the corresponding structure in the prior art.

[0024] The top two sides of the housing body 1 are provided with handles 18 that can be rotated through pins. The lower surface of the housing body 1 is provided with positioning grooves 17 on both sides, and the two positioning grooves 17 are respectively adapted to the two flanges 3. The positioning grooves 17 and the flanges 3 cooperate to ensure the stability of multiple lithium batteries after stacking.

[0025] Working principle of this utility model:

[0026] When in use, the main body 1 of the housing can protect the lithium battery cell 16. During use, the two sets of fans 6 work simultaneously. One set of fans 6 draws in outside air and injects it into the interior of the main body 1 through the ventilation slot 5. The other set of fans 6 draws in the air inside the main body 1 through the ventilation slot 5 and discharges it to the outside. During this process, the air inside the main body 1 circulates with the outside air. The air carries away the heat generated by the lithium battery cell 16 during the circulation process, thereby preventing the lithium battery cell 16 from overheating and catching fire.

[0027] When a single lithium battery is used independently, the pressure seat 9 and the slide bar 11 are pushed upward by the top spring 12. At this time, the slide bar 11 drives the movable rod 14 to be pushed upward. The movable rod 14 drives the fan row 6 to move upward through the movable frame 15, so that the two fan rows 6 rotate around the two connecting seats 7 and the pin shaft respectively, so that the two fan rows 6 tilt outward. In this state, the fan row 6 can obtain a larger air guiding surface. In this state, the fan row 6 can ensure the heat dissipation effect inside the housing body 1 by operating at low power.

[0028] When multiple lithium batteries are stacked, the pressure seat 9 is squeezed downward by the upper housing body 1 and moves downward, driving the slide rod 11 and the movable rod 14 to move downward. The movable rod 14 drives the fan row 6 downward through the movable frame 15, so that the two fan rows 6 rotate to a horizontal state. At this time, the fan row 6 exchanges with the outside air through the channel between the two flanges 3. In this state, the fan row 6 operates with slightly higher power consumption, but still ensures the heat dissipation effect inside the housing body 1.

[0029] It should be noted that in this embodiment, the fan 6 is directly powered by the lithium battery cell 16 and is equipped with a corresponding controller. The controller can be connected to an external pressure sensor or piezoelectric switch to control the power consumption of the fan 6 according to the position of the pressure base 9. The structure of the controller, pressure sensor and other components and the control program of the controller all adopt existing technology and will not be described in detail here.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery housing comprising a housing body (1), characterized in that: The top of the housing body (1) is fixed with a top plate (2) by bolts. Flanges (3) are fixed on both sides of the upper surface of the top plate (2). An extension cover (4) is fixed in the middle of the top plate (2), and the bottom of the extension cover (4) is located inside the housing body (1). Multiple ventilation slots (5) are provided through the bottom of the inner walls on both sides of the extension cover (4). Fan ducts (6) are provided at the top of the inner walls on both sides of the extension cover (4). Connecting seats (7) are fixed on the sides of the two fan ducts (6) that are far apart from each other. The two connecting seats (7) are... The two fan rows (6) are rotatably connected to the top of the inner walls on both sides of the extension cover (4) by a pin. Multiple fans are fixedly provided in the middle of each of the two fan rows (6), and the fans in the middle of the two fan rows (6) rotate in opposite directions. A fixed cover (8) is fixedly provided in the middle of the extension cover (4). A pressure seat (9) is slidably provided inside the fixed cover (8). A strip-shaped sliding groove (10) is provided through both sides of the fixed cover (8). A sliding rod (11) is fixedly provided at the bottom of the pressure seat (9), and the sliding rod (11) is slidably provided inside the sliding groove (10).

2. A lithium battery case according to claim 1, characterized in that: A top spring (12) is fixedly provided on the lower surface of the slide bar (11), and the top spring (12) is fixedly provided inside the slide groove (10).

3. A lithium battery case according to claim 2, wherein: Both ends of the slide bar (11) are fixedly provided with movable seats (13), and the inner side of the movable seat (13) is fixedly provided with a movable rod (14). The middle part of the side of the fan duct (6) near the fixed cover (8) is fixedly provided with a movable frame (15), and the movable rod (14) is slidably provided inside the movable frame (15).

4. The lithium battery case of claim 1, wherein: A lithium battery cell (16) is fixedly installed inside the main body (1) of the housing, and the lithium battery cell (16) is located below the extension cover (4).

5. The lithium battery case of claim 1, wherein: The top two sides of the housing body (1) are each provided with a handle (18) that can be rotated through a pin.

6. The lithium battery case of claim 1, wherein: The lower surface of the housing body (1) is provided with positioning grooves (17) on both sides, and the two positioning grooves (17) are respectively adapted to the two flanges (3).

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