Protection device of lithium battery pack

Abstract

The utility model relates to the technical field of lithium battery packs, and provides a lithium battery pack protection device which comprises a protection frame, a plurality of supporting assemblies are arranged on the outer wall of the bottom end of the protection frame and used for supporting the protection frame, and the supporting assemblies are annularly arrayed at the bottom end of the protection frame and used for supporting the protection frame. A plurality of first buffering corner pads are fixedly connected to the bottom end of the interior of the protection frame, the first buffering corner pads are annularly arrayed at the bottom end of the interior of the protection frame, third buffering pads are arranged among the first buffering corner pads, and the bottom ends of the third buffering pads are bonded to the inner wall of the bottom end of the protection frame. Cooling assemblies are arranged on the inner walls of the left side and the right side of the protection frame and used for cooling the lithium battery pack, and a plurality of heat dissipation assemblies are arranged on the inner walls of the front end and the rear end of the protection frame and used for conducting heat dissipation on the lithium battery pack, so that flowing cold air cools all the faces of the lithium battery pack; therefore, the operation temperature of the lithium battery pack is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packs, and specifically, to a protection device for a lithium battery pack. Background Art

[0002] A lithium battery consists of a cathode and an anode, which are separated and connected by an electrolyte. The electrolyte conducts ions but is an insulator for electrons. In the charged state, the anode contains a high concentration of intercalated lithium, while the cathode contains lithium. During discharge, lithium ions leave the anode and migrate through the electrolyte to the cathode, and their associated electrons are collected by the current collector to power an electrical device. The designs and combinations of cells in modules and batteries vary greatly.

[0003] After retrieval, the existing patent (Publication No.: CN220963615U) discloses a lithium battery protection device, belonging to the technical field of lithium battery protection. It includes a protection frame, in which a lithium battery pack is installed. A plurality of mounting connection plates are symmetrically installed at the ends of the lithium battery pack. A plurality of buffer protection structures are movably installed on the plurality of mounting connection plates. The buffer protection structure is composed of a mounting substrate, a buffer protection airbag, a mounting end plate, a mounting connecting rod, and a buffer protection spring. The buffer protection airbag is installed at the outer end of the mounting substrate, and there are two mounting end plates symmetrically installed at the inner end of the mounting substrate. By setting the mounting connection plates at the ends of the lithium battery pack and the buffer protection structure on the mounting connection plates, the buffer protection structure can buffer the impact forces generated by impacts on the lithium battery pack from the front, back, left, right, above, and below, thereby providing all-round protection for the lithium battery pack, and further reducing the probability of damage to the lithium battery pack caused by collisions. The above utility model protects the lithium battery pack through the buffer protection structure during use, reduces the damage caused to the lithium battery by impacts, and thus improves the buffer efficiency of the device. However, traditional lithium battery packs generate heat during use. When the temperature of the lithium battery itself becomes too high, it may cause the lithium battery pack to explode. The device lacks a cooling or heat dissipation device, and there may be a possibility of overheating and self-explosion during the use of the lithium battery pack inside the device. Content of the Utility Model

[0004] The utility model provides a protection device for a lithium battery pack, which solves the problem in the related art that traditional lithium battery packs generate heat during use. When the temperature of the lithium battery itself becomes too high, it may cause the lithium battery pack to explode. The device lacks a cooling or heat dissipation device, and there may be a possibility of overheating and self-explosion during the use of the lithium battery pack inside the device.

[0005] The technical solution of the present utility model is as follows: A protection device for a lithium battery pack, comprising: a protection frame, on the outer wall of the bottom end of the protection frame, there are provided a plurality of support components for supporting the protection frame, and the plurality of support components are annularly arrayed at the bottom end of the protection frame; at the inner bottom end of the protection frame, there are fixedly connected a plurality of first buffer corner pads, and the plurality of first buffer corner pads are annularly arrayed at the inner bottom end of the protection frame; between the plurality of first buffer corner pads, there is provided a third buffer pad, and the bottom end of the third buffer pad is adhesively connected to the inner wall of the bottom end of the protection frame; on both the left and right inner walls of the protection frame, there are provided cooling components for cooling the lithium battery pack; on both the front and rear inner walls of the protection frame, there are provided a plurality of heat dissipation components for dissipating heat from the lithium battery pack; on the outer wall of the top end of the protection frame, there is provided a fixing component for fixing the lithium battery pack, and at the top end of the fixing component, there is provided a wiring component.

[0006] Preferably, the support component includes a support column fixedly connected to the outer wall of the bottom end of the protection frame, and at the bottom end of the support column, there is adhesively connected a first buffer pad.

[0007] Preferably, the cooling component includes a first small hole penetrating through the inner wall of the protection frame, on the inner wall of one side of the first small hole, there is fixedly connected a fixing seat, and inside the fixing seat, there is fixedly connected a ceramic refrigeration sheet.

[0008] Preferably, the cooling component further includes a plurality of heat dissipation fins fixedly connected to the outer wall of one side of the ceramic refrigeration sheet, and on the outer side of the plurality of heat dissipation fins, there is provided a first heat dissipation net, and the first heat dissipation net is fixedly connected to the outer wall of the outside of the first small hole.

[0009] Preferably, the heat dissipation component includes a second small hole penetrating through the front and rear inner walls of the protection frame, inside the second small hole, there is provided a fan, on the outer wall of the other side of the fan, there is fixedly connected a second heat dissipation net, and the second heat dissipation net is fixedly connected to the outer wall of the outside of the second small hole.

[0010] Preferably, the fixing component includes a fixing cover snap-fitted to the outer wall of the top end of the protection frame, on the inner wall of the top end of the fixing cover, there are adhesively connected a plurality of second buffer pads, and the plurality of second buffer pads are annularly arrayed on the inner wall of the bottom end of the fixing cover.

[0011] Preferably, the fixing component further includes a limiting seat fixedly connected to the outer walls of the two top ends of the protection frame, on the inner walls of the top ends of the two limiting seats, there are provided fixing blocks, both of the two fixing blocks are fixedly connected to the outer wall of the fixing cover, and through the inner walls of both of the two fixing blocks, there are respectively provided fixing bolts, one ends of the two fixing bolts respectively penetrate through the two inner walls of the top ends of the limiting seats and are snap-fitted therewith, and on the outer walls of the other ends of the two fixing bolts, there are respectively threadedly connected nuts.

[0012] Preferably, the wiring assembly includes a plurality of wiring holes penetrating through the outer wall of the top end of the fixed cover. The plurality of wiring holes are horizontally and equidistantly distributed at the top end of the fixed cover. A cover plate is arranged at the top ends of the plurality of wiring holes. The rear side of the cover plate is rotatably connected to a rotating seat through a rotating rod, and the rear side of the rotating seat is fixedly connected to the inner wall of the fixed cover.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, when the lithium battery pack generates heat, cold air is generated by the ceramic refrigeration sheet, and then the heat generated by the lithium battery is exported through the fan. At the same time, the wind generated by the fan drives the cold air to circulate in the air flow, so that the flowing cold air cools each surface of the lithium battery pack, thereby keeping the operating temperature of the lithium battery pack in a stable state, improving the operating efficiency of the lithium battery pack, and further improving the protection efficiency of the device. The bottom end of the lithium battery pack is supported by the third buffer pad, the four corners of the bottom end of the lithium battery are supported by the first buffer pad, and the four corners of the top end of the lithium battery pack are protected by the second buffer pad, so as to protect the lithium battery pack and reduce the impact force on the lithium battery when the device is impacted; Description of the Drawings

[0015] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 It is a front view structural diagram proposed by the present utility model;

[0017] Figure 2 It is a bottom view unfolded structural diagram proposed by the present utility model;

[0018] Figure 3 It is a top view structural diagram of the protection frame proposed by the present utility model;

[0019] Figure 4 It is a sectional view unfolded structural diagram of the protection frame proposed by the present utility model;

[0020] Figure 5 It is a top view structural diagram of the fixed cover proposed by the present utility model;

[0021] In the figure: 1. Protection frame; 2. Support component; 201. Support column; 202. First buffer pad; 3. Cooling component; 301. Fixed seat; 302. Ceramic refrigeration sheet; 303. Heat dissipation fin; 304. First heat dissipation net; 4. Heat dissipation component; 401. Fan; 402. Second heat dissipation net; 5. First buffer corner pad; 6. Fixing component; 601. Fixed cover; 602. Second buffer pad; 603. Fixed block; 604. Limit seat; 605. Fixed bolt; 606. Nut; 7. Wiring component; 701. Rotating seat; 702. Cover plate; 703. Wiring hole. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] The embodiments of the present application disclose a protection device for a lithium battery pack. Please refer to Figures 1-4, A protection device for a lithium battery pack, comprising: a protection frame 1, on the outer wall of the bottom end of the protection frame 1, there are provided a plurality of support components 2 for supporting the protection frame 1. The plurality of support components 2 are annularly arrayed at the bottom end of the protection frame 1. At the inner bottom end of the protection frame 1, there are fixedly connected a plurality of first buffer corner pads 5. The plurality of first buffer corner pads 5 are annularly arrayed at the inner bottom end of the protection frame 1. Between the plurality of first buffer corner pads 5, there is provided a third buffer pad 8. The bottom end of the third buffer pad 8 is adhesively bonded to the inner wall of the bottom end of the protection frame 1. On both the left and right inner walls of the protection frame 1, there are provided cooling components 3 for cooling the lithium battery pack. On both the front and rear inner walls of the protection frame 1, there are provided a plurality of heat dissipation components 4 for dissipating heat from the lithium battery pack. On the outer wall of the top end of the protection frame 1, there is provided a fixing component 6 for fixing the lithium battery pack. On the top end of the fixing component 6, there is provided a wiring component 7. The support component 2 includes a support column 201 fixedly connected to the outer wall of the bottom end of the protection frame 1. At the bottom end of the support column 201, there is adhesively bonded a first buffer pad 202. The cooling component 3 includes a first small hole penetrating through the inner wall of the protection frame 1. On the inner wall of one side of the first small hole, there is fixedly connected a fixing seat 301. Inside the inner wall of the fixing seat 301, there is fixedly connected a ceramic refrigeration sheet 302. The cooling component 3 further includes a plurality of heat dissipation fins 303 fixedly connected to the outer wall of one side of the ceramic refrigeration sheet 302. On the outside of the plurality of heat dissipation fins 303, there is provided a first heat dissipation net 304. The first heat dissipation net 304 is fixedly connected to the outer wall of the outside of the first small hole. The heat dissipation component 4 includes a second small hole penetrating through the front and rear inner walls of the protection frame 1. Inside the inner wall of the second small hole, there is provided a fan 401. On the outer wall of the other side of the fan 401, there is fixedly connected a second heat dissipation net 402. The second heat dissipation net 402 is fixedly connected to the outer wall of the outside of the second small hole. When the lithium battery pack operates and generates heat, start the ceramic refrigeration sheet 302, so that the ceramic refrigeration sheet 302 starts to refrigerate. At the same time, dissipate heat from the other side of the ceramic refrigeration sheet 302 through the heat dissipation fins 303, and conduct the heat dissipated by the heat dissipation fins 303 through the first heat dissipation net 304. When the ceramic refrigeration sheet 302 of this device starts to operate, start the fan 401, so that the fan 401 starts to rotate and operate, conduct the heat generated by the lithium battery pack through the second heat dissipation net 402 and drive the air to flow, so that the cold air generated by the ceramic refrigeration sheet 302 flows and cools the lithium battery pack.

[0024] Please refer to Figures 1-5, the fixing component 6 includes a fixing cover 601 snap-connected to the outer wall of the top end of the protection frame 1. A plurality of second buffer pads 602 are adhesively connected to the inner wall of the top end of the fixing cover 601. The plurality of second buffer pads 602 are annularly arrayed on the inner wall of the bottom end of the fixing cover 601. The fixing component 6 further includes limit seats 604 fixedly connected to the outer walls of the top ends of both sides of the protection frame 1. Fixed blocks 603 are arranged on the inner walls of the two limit seats 604. The two fixed blocks 603 are fixedly connected to the outer wall of the fixing cover 601. Fixing bolts 605 are respectively arranged through the inner walls of the two fixed blocks 603. One ends of the two fixing bolts 605 respectively penetrate through the inner walls of the top ends of both sides of the limit seats 604 and are snap-connected thereto. Nuts 606 are threadedly connected to the outer walls of the other ends of the two fixing bolts 605. When the lithium battery pack is placed inside the protection frame 1, the lithium battery pack is snapped by the first buffer corner pads 5, and the four corners of the bottom end of the lithium battery pack are buffered. At the same time, the lithium battery pack is supported by the third buffer pads 8, and the bottom end of the lithium battery pack is buffered. Then, the four corners of the top end of the lithium battery pack are supported by the second buffer pads 602, and the four corners of the top end of the lithium battery are buffered, so as to reduce the influence on the lithium battery after being impacted.

[0025] Please refer to Figure 1 , Figure 2 and Figure 5 , the wiring component 7 includes a plurality of wiring holes 703 formed through the outer wall of the top end of the fixing cover 601. The plurality of wiring holes 703 are horizontally and equidistantly distributed on the top end of the fixing cover 601. A cover plate 702 is arranged at the top ends of the plurality of wiring holes 703. The rear side of the cover plate 702 is rotatably connected to a rotating seat 701 through a rotating rod. The rear side of the rotating seat 701 is fixedly connected to the inner wall of the fixing cover 601. When wiring the lithium battery, the cover plate 702 is rotated to open the wiring holes 703, and then the leads of the lithium battery pack are led out through the wiring holes 703 and connected.

[0026] Working principle and usage process: First, open the fixed cover 601, place the lithium battery pack inside the protection frame 1, so that the bottom end of the lithium battery pack is in close contact with the third buffer pad 8, and at the same time, the four corners of the bottom end of the lithium battery pack are in close contact with the inner wall of the first buffer corner pad 5. Then, snap the fixed cover 601 onto the outer wall of the top of the protection frame 1, so that several second buffer pads 602 on the inner wall of the top end of the fixed cover 601 are in close contact with the lithium battery pack. At the same time, the fixing blocks 603 on both sides of the fixed cover 601 move to the inside of the top end of the limit seat 604. Then, the other end of the fixing bolt 605 sequentially penetrates the top end of the limit seat 604 and the inner wall of the fixing block 603, and is threadedly fixed to the fixing bolt 605 through the nut 606, so as to fix the fixing block 603 and the limit seat 604 together, and thus fix the protection frame 1 and the fixed cover 601 together. At this time, the lead wire of the lithium battery is led out through the wiring hole 703 to be connected and used. Start the lithium battery pack to make the lithium battery pack start to operate. When the lithium battery operates and generates heat, turn on the ceramic cooling sheet 302 to make the ceramic cooling sheet 302 start to cool and cool the lithium battery pack. At the same time, turn on the fan 401 to circulate the cold air inside the protection frame 1, so as to reduce the temperature of each surface of the lithium battery pack.

[0027] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protection device for a lithium battery pack, comprising: A protection frame (1), characterized in that a plurality of support components (2) are arranged on the outer wall of the bottom end of the protection frame (1) for supporting the protection frame (1), the plurality of support components (2) are arranged in a circular array at the bottom end of the protection frame (1), a plurality of first buffer corner pads (5) are fixedly connected to the inner bottom end of the protection frame (1), the plurality of first buffer corner pads (5) are arranged in a circular array at the inner bottom end of the protection frame (1), a third buffer pad (8) is arranged between the plurality of first buffer corner pads (5), the bottom end of the third buffer pad (8) is bonded to the inner wall of the bottom end of the protection frame (1), the left and right inner walls of the protection frame (1) are both provided with cooling components (3) for cooling a lithium battery pack, the front and rear inner walls of the protection frame (1) are both provided with a plurality of heat dissipation components (4) for dissipating heat from the lithium battery pack, the top outer wall of the protection frame (1) is provided with a fixing component (6) for fixing the lithium battery pack, and the top of the fixing component (6) is provided with a wiring component (7).

2. A protection device for a lithium battery pack according to claim 1, characterized in that: The support assembly (2) comprises a support column (201) fixedly connected to the outer wall of the bottom end of the protection frame (1), and a first buffer pad (202) is bonded to the bottom end of the support column (201).

3. The protection device for a lithium battery pack according to claim 1, characterized in that: The cooling assembly (3) comprises a first small hole extending through the inner wall of the protection frame (1); a fixing seat (301) is fixedly connected to the inner wall of one side of the first small hole; and a ceramic cooling plate (302) is fixedly connected to the inner wall of the fixing seat (301).

4. A protection device for a lithium battery pack according to claim 3, characterized in that: The cooling assembly (3) further comprises a plurality of heat dissipation fins (303) fixedly connected to an outer wall of one side of the ceramic refrigeration plate (302), a first heat dissipation net (304) being arranged on the outer side of the plurality of heat dissipation fins (303), and the first heat dissipation net (304) being fixedly connected to the outer inner wall of the first small hole.

5. The protection device for a lithium battery pack according to claim 1, characterized in that: The heat dissipation component (4) comprises a second small hole penetrating through the inner walls of the front and rear sides of the protection frame (1); a fan (401) is arranged on the inner wall of the second small hole; a second heat dissipation net (402) is fixedly connected to the outer wall of the other side of the fan (401); and the second heat dissipation net (402) is fixedly connected to the outer inner wall of the second small hole.

6. The protection device for a lithium battery pack according to claim 1, characterized in that: The fixing assembly (6) comprises a fixing cover (601) which is snap-connected to the outer wall of the top end of the protection frame (1); a plurality of second buffer pads (602) are bonded to the inner wall of the top end of the fixing cover (601); and the plurality of second buffer pads (602) are arranged in a circular array on the inner wall of the bottom end of the fixing cover (601).

7. A protection device for a lithium battery pack according to claim 6, characterized in that: The fixing assembly (6) further comprises a limiting seat (604) fixedly connected to the top outer walls of both sides of the protection frame (1); the top inner walls of the two limiting seats (604) are both provided with fixing blocks (603); the two fixing blocks (603) are both fixedly connected to the outer wall of the fixing cover (601); the inner walls of the two fixing blocks (603) are both penetrated by fixing bolts (605); one end of the two fixing bolts (605) penetrates the top inner walls of both sides of the limiting seat (604) in turn and is engaged therewith; the outer walls of the other ends of the two fixing bolts (605) are both threadedly connected with nuts (606).

8. The protection device for a lithium battery pack according to claim 6, characterized in that: The wiring assembly (7) comprises a plurality of wiring holes (703) penetrating through the outer wall of the top end of the fixed cover (601); the plurality of wiring holes (703) are horizontally and equidistantly distributed on the top end of the fixed cover (601); a cover plate (702) is provided on the top end of the plurality of wiring holes (703); the rear side of the cover plate (702) is rotatably connected to a rotating seat (701) via a rotating rod; the rear side of the rotating seat (701) is fixedly connected to the inner wall of the fixed cover (601).

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