Explosion-proof protection plate for lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, in particular to an explosion-proof protection plate for a lithium battery, and solves the problem that the use convenience of the protection plate is greatly reduced as the protection plate in the prior art is fixed through screws and is inconvenient to disassemble and maintain subsequently. A lithium battery explosion-proof protection plate comprises a frame body, the inner side of the frame body is slidably connected with a protection plate, the two sides of the protection plate are both fixedly connected with connecting plates, the two connecting plates are both slidably connected with the inner wall of the frame body through sliding blocks, one side of one of the two sliding blocks is fixedly connected with a side plate, and one side of the side plate is provided with a supporting rod; one end of the strut penetrates through the side plate. According to the mode provided by the utility model, the protection plate is drawn towards the outer side of the frame body, so that subsequent maintenance is facilitated, and meanwhile, the stability of the protection plate is improved by utilizing the limiting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to an explosion-proof protection plate for lithium batteries. Background Art

[0002] The lithium battery explosion-proof protection board is a safety device for lithium batteries. Its main function is to prevent lithium batteries from exploding due to overcharging, overdischarging, short circuit, etc. Overcharge protection: The lithium battery explosion-proof protection board can monitor the charging voltage of the battery and cut off the charging circuit when the voltage reaches the set value, thereby preventing the battery from overcharging. Overcharging may cause the internal pressure of the battery to increase, which may lead to an explosion. Therefore, overcharge protection is one of the important functions of the explosion-proof protection board. Overdischarge protection: When the lithium battery is discharged below the set voltage, the explosion-proof protection board will cut off the discharge circuit to prevent the battery from overdischarging. Overdischarging can damage battery performance and even cause safety problems. Short circuit protection: If the battery is short-circuited, the lithium battery explosion-proof protection board can quickly cut off the circuit to avoid overheating and potential explosion risks caused by large current. Temperature protection: The protection board has a built-in temperature sensor. When the battery temperature exceeds the safe range, it will automatically cut off the circuit to prevent explosions caused by high temperature. The lithium battery explosion-proof protection board monitors the battery voltage, current and temperature in real time through electronic circuits. When these parameters exceed the safety range, the control IC on the protection board will immediately cut off the MOS switch, thereby disconnecting the battery from the external circuit to ensure battery safety.

[0003] When using the protection plate, the protection plate needs to be replaced later and its stability needs to be ensured during use. However, we consider that the traditional protection plates are fixed by screws, which is not convenient for subsequent disassembly and maintenance, thus greatly reducing the convenience of using the protection plate and being extremely inconvenient. Therefore, a lithium battery explosion-proof protection plate is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an explosion-proof protection plate for a lithium battery, which solves the problem that the protection plates in the prior art are all fixed by screws, which is inconvenient for subsequent disassembly and maintenance, thereby greatly reducing the convenience of using the protection plate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lithium battery explosion-proof protection plate comprises a frame, the inner side of the frame is slidably connected with the protection plate, both sides of the protection plate are fixedly connected with connecting plates, and the two connecting plates are slidably connected to the inner wall of the frame through sliders, one side of one of the two sliders is fixedly connected with a side plate, and one side of the side plate is provided with a support rod, one end of the support rod passes through the side plate, and one side of the outer wall of the frame is provided with a plurality of side grooves used with the support rod, and one end of the support rod is elastically connected to one side of the side plate.

[0007] Preferably, a tension spring is sleeved on one end of the support rod, and one end of the support rod is elastically connected to one side of the side plate through the tension spring.

[0008] Preferably, a sliding block is fixedly connected to the bottom of the protection plate, and the sliding block is slidably connected to the inner bottom of the frame through a sliding groove.

[0009] Preferably, plug boards are inserted on both sides of the frame, one side of the plug board is fixedly connected to a limit plate, and one side of the protection plate is provided with a limit groove used in conjunction with the limit plate.

[0010] Preferably, slots for cooperating with two plug-in boards are provided on both sides of the inner side of the frame.

[0011] Preferably, the two sliders are slidably connected to the inner wall of the frame through a slide rail, and the two sliders are detachably connected to the two connecting plates through bolts.

[0012] The utility model has at least the following beneficial effects:

[0013] When the utility model provides a lithium battery explosion-proof protection plate, when in use, the protection plate is first used normally. When the protection plate needs to be disassembled for maintenance, the connecting plate is separated from the frame, the limiting plate is separated from the limiting groove, and the slider and the connecting plate are disassembled at the same time. Finally, the protection plate is drawn toward the outside of the frame for easy subsequent maintenance. At the same time, the support rod can be plugged into the side groove, and the plug plate can be plugged into the limiting plate to limit the protection plate. Compared with the prior art, the protection plates are all fixed by screws, which is not convenient for subsequent disassembly and maintenance, thereby greatly reducing the problem of convenience in using the protection plate. The method proposed in the utility model facilitates subsequent maintenance by drawing the protection plate toward the outside of the frame, and at the same time utilizes the limiting mechanism to improve the stability of the protection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0016] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the test structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the side groove structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the inner structure of the utility model.

[0020] In the figure: 1, frame; 2, protection plate; 3, connecting plate; 4, slider; 5, slide rail; 6, plug plate; 7, slot; 8, limit plate; 9, limit groove; 10, sliding block; 11, sliding groove; 12, side plate; 13, support rod; 14, tension spring; 15, side groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] Reference Figure 1-5 A lithium battery explosion-proof protection plate comprises a frame 1, a protection plate 2 is slidably connected to the inner side of the frame 1, and connecting plates 3 are fixedly connected to both sides of the protection plate 2, and the two connecting plates 3 are slidably connected to the inner wall of the frame 1 through sliders 4, one side of one of the two sliders 4 is fixedly connected to a side plate 12, and a support rod 13 is provided on one side of the side plate 12, one end of the support rod 13 passes through the side plate 12, and a plurality of side grooves 15 for cooperating with the support rod 13 are provided on one side of the outer wall of the frame 1, and one end of the support rod 13 is elastically connected to one side of the side plate 12. Specifically, by pulling the protection plate 2 toward the outside of the frame 1, subsequent maintenance is facilitated, and the stability of the protection plate 2 is improved by using a limiting mechanism.

[0023] This program has the following working process:

[0024] When the utility model is used, the protection plate 2 is used normally first. When the protection plate 2 needs to be disassembled for maintenance, the connecting plate 3 is separated from the frame 1, the limiting plate 8 is separated from the limiting groove 9, and the slider 4 is disassembled from the connecting plate 3. Finally, the protection plate 2 is pulled toward the outside of the frame 1 to facilitate subsequent maintenance. At the same time, the support rod 13 can be plugged into the side groove 15, and the plugging plate 6 can be plugged into the limiting plate 8 to limit the protection plate 2.

[0025] According to the above working process, we can know that:

[0026] By pulling the protection plate 2 toward the outside of the frame 1 , subsequent maintenance is facilitated, and the limiting mechanism is used to improve the stability of the protection plate 2 .

[0027] Furthermore, a tension spring 14 is sleeved on one end of the support rod 13 , and one end of the support rod 13 is elastically connected to one side of the side plate 12 via the tension spring 14 . Specifically, the tension spring 14 is used to facilitate control of the support rod 13 .

[0028] Furthermore, a sliding block 10 is fixedly connected to the bottom of the protection plate 2, and the sliding block 10 is slidably connected to the inner bottom of the frame 1 through a sliding groove 11. Specifically, the sliding block 10 slides in the sliding groove 11, thereby enhancing the stability of the protection plate 2.

[0029] Furthermore, plug-in plates 6 are inserted on both sides of the frame 1, and one side of the plug-in plate 6 is fixedly connected to a limiting plate 8, and one side of the protective plate 2 is provided with a limiting groove 9 for cooperating with the limiting plate 8. Specifically, the limiting plate 8 is plugged into the limiting groove 9, and then the protective plate 2 can be limited by cooperating with the plug-in plate 6.

[0030] Furthermore, slots 7 for cooperating with two plug-in boards 6 are provided on both sides of the inner side of the frame 1 .

[0031] Furthermore, the two sliders 4 are slidably connected to the inner wall of the frame 1 via the slide rail 5, and the two sliders 4 are detachably connected to the two connecting plates 3 via bolts.

[0032] In summary: the tension spring 14 is used to control the support rod 13, the sliding block 10 is used to slide in the sliding groove 11, thereby enhancing the stability of the protection plate 2, and the limiting plate 8 is plugged into the limiting groove 9, thereby cooperating with the plug plate 6 to limit the protection plate 2.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery explosion-proof protection plate, comprising a frame (1), characterized in that: The inner side of the frame (1) is slidably connected to a protection plate (2), and both sides of the protection plate (2) are fixedly connected to connection plates (3), and the two connection plates (3) are slidably connected to the inner wall of the frame (1) through sliders (4), one side of one of the two sliders (4) is fixedly connected to a side plate (12), and one side of the side plate (12) is provided with a support rod (13), one end of the support rod (13) passes through the side plate (12), and one side of the outer wall of the frame (1) is provided with a plurality of side grooves (15) used for matching the support rod (13), and one end of the support rod (13) is elastically connected to one side of the side plate (12).

2. A lithium battery explosion-proof protection plate according to claim 1, characterized in that: A tension spring (14) is sleeved on one end of the support rod (13), and one end of the support rod (13) is elastically connected to one side of the side plate (12) via the tension spring (14).

3. A lithium battery explosion-proof protection plate according to claim 2, characterized in that: A sliding block (10) is fixedly connected to the bottom of the protection plate (2), and the sliding block (10) is slidably connected to the inner bottom of the frame (1) via a sliding groove (11).

4. The lithium battery explosion-proof protection plate according to claim 1, characterized in that: Insertion plates (6) are inserted on both sides of the frame (1), one side of the insertion plate (6) is fixedly connected to a limit plate (8), and one side of the protection plate (2) is provided with a limit groove (9) used in conjunction with the limit plate (8).

5. The lithium battery explosion-proof protection plate according to claim 4, characterized in that: Slots (7) for use with two plug boards (6) are provided on both sides of the inner side of the frame (1).

6. The lithium battery explosion-proof protection plate according to claim 1, characterized in that: The two sliders (4) are both slidably connected to the inner wall of the frame (1) via a slide rail (5), and the two sliders (4) are detachably connected to the two connecting plates (3) via bolts.

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