Lithium battery protection board capable of preventing overcharge

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery protection plate capable of preventing overcharge, and solves the problems that the protection plate in the prior art is lack of further heat dissipation for the protection plate, so that the protection plate cannot dissipate heat in time when the battery is overcharged, and the service life of the battery is influenced. A lithium battery protection plate capable of preventing overcharge comprises a frame body, the inner side of the frame body is fixedly connected with a protection plate, the bottom of the protection plate is fixedly connected with a plurality of copper rods, the top of the protection plate is fixedly connected with a plurality of heat conduction rods, and the upper portion of the inner side of the frame body is slidably connected with a low-temperature superconductor plate. And the extension part of the low-temperature superconductor plate is positioned on the outer side of the frame body. According to the mode provided by the utility model, the low-temperature superconductor plate is used for heat dissipation through the heat conducting rod and is matched with all copper rods for heat dissipation, so that the safety of the battery can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery protection plate for preventing overcharging. Background Art

[0002] Battery protection board, as the name implies, is an integrated circuit board that protects rechargeable (generally refers to lithium batteries). The reason why lithium batteries (rechargeable) need protection is determined by their own characteristics. Since the material of the lithium battery itself determines that it cannot be overcharged, over-discharged, over-current, short-circuited, or charged and discharged at ultra-high temperatures, lithium battery components always appear with a protection board with a sampling resistor and a current fuse. The protection function of lithium batteries is usually completed by the protection circuit board and current devices such as PTC or TCO. The protection board is composed of electronic circuits, which accurately monitor the voltage of the battery cell and the current of the charging and discharging circuit at all times in an environment of -40℃ to +85℃, and instantly control the on and off of the current circuit; PTC or TCO prevents the battery from being severely damaged in a high temperature environment.

[0003] When using a lithium battery protection board, it is necessary to prevent overcharging from causing temperature rise and affecting the normal use of the battery. However, we consider that the traditional protection board lacks further heat dissipation of the protection board, which causes the battery to be overcharged and the protection board cannot dissipate heat in time, affecting the battery life, which is extremely inconvenient. Therefore, a lithium battery protection board that prevents overcharging is urgently needed to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a lithium battery protection plate for preventing overcharging, which solves the problem that the protection plate in the prior art lacks further heat dissipation of the protection plate, thereby causing the battery to be overcharged and the protection plate to be unable to dissipate heat in time, thus affecting the service life of the battery.

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

[0006] A lithium battery protection plate for preventing overcharging comprises a frame, a protection plate is fixedly connected to the inner side of the frame, a plurality of copper rods are fixedly connected to the bottom of the protection plate, and a plurality of heat-conducting rods are fixedly connected to the top of the protection plate, a low-temperature superconductor plate is slidably connected to the upper inner side of the frame, an extended portion of the low-temperature superconductor plate is located outside the frame, a fixing plate is fixedly connected to one side of the outer wall of the frame, a plugging rod is plugged into the fixing plate, and one end of the plugging rod passes through one end of the low-temperature superconductor plate.

[0007] Preferably, bottom plates are fixedly connected to both sides of the bottom of the frame, and anti-slip plates are fixedly connected to the bottoms of the two bottom plates.

[0008] Preferably, a slider is fixedly connected to one side of the low-temperature superconductor plate, and the slider is slidably connected to the side wall of the frame through a slide rail.

[0009] Preferably, one end of all the copper rods passes through the bottom of the frame.

[0010] Preferably, a slot for cooperating with the insertion rod is provided on one end of the low-temperature superconductor plate and on the fixing plate.

[0011] Preferably, there is a clearance fit between the slide block and the slide rail.

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

[0013] When the utility model is used, a lithium battery protection plate for preventing overcharging is firstly used to transfer the heat of the protection plate to the low-temperature superconductor plate by using the heat-conducting rod, and at the same time, the low-temperature superconductor plate can be used to dissipate heat through the heat-conducting rod. At this time, the low-temperature superconductor plate can be energized, and at the same time, all the copper rods can be used to further dissipate the heat of the protection plate, thereby avoiding the problem of high temperature generated by overcharging of the battery. Compared with the protection plate in the prior art, which lacks further heat dissipation of the protection plate, resulting in the problem that the protection plate cannot dissipate heat in time when the battery is overcharged, affecting the service life of the battery, the method proposed in the utility model dissipates heat through the low-temperature superconductor plate through the heat-conducting rod, and cooperates with all the copper rods to dissipate heat, thereby improving the safety of the battery. 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 side view of the structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

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

[0019] Figure 5 This is a schematic diagram of the copper rod structure of the utility model.

[0020] In the figure: 1. frame; 2. protection plate; 3. low-temperature superconductor plate; 4. heat-conducting rod; 5. plug-in rod; 6. fixing plate; 7. slot; 8. copper rod; 9. bottom plate; 10. anti-skid plate; 11. slider; 12. slide rail. 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 protection plate for preventing overcharging includes a frame 1, a protection plate 2 is fixedly connected to the inner side of the frame 1, a plurality of copper rods 8 are fixedly connected to the bottom of the protection plate 2, and a plurality of heat-conducting rods 4 are fixedly connected to the top of the protection plate 2, a low-temperature superconductor plate 3 is slidably connected to the upper inner side of the frame 1, an extended portion of the low-temperature superconductor plate 3 is located on the outer side of the frame 1, a fixing plate 6 is fixedly connected to one side of the outer wall of the frame 1, and a plug 5 is plugged into the fixing plate 6, and one end of the plug 5 passes through one end of the low-temperature superconductor plate 3. Specifically, heat is dissipated through the low-temperature superconductor plate 3 through the heat-conducting rod 4, and heat is dissipated in cooperation with all the copper rods 8, thereby improving the safety of the battery.

[0023] This program has the following working process:

[0024] When the lithium battery protection plate for preventing overcharging of the utility model is used, the heat of the protection plate 2 is first transferred to the low-temperature superconductor plate 3 by using the heat-conducting rod 4, and the low-temperature superconductor plate 3 can be used to dissipate heat through the heat-conducting rod 4. At this time, the low-temperature superconductor plate 3 can be powered on, and all the copper rods 8 can be used to further dissipate heat for the protection plate 2, thereby avoiding the problem of high temperature generated by overcharging of the battery.

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

[0026] The low-temperature superconductor plate 3 dissipates heat through the heat-conducting rod 4 and cooperates with all the copper rods 8 to dissipate heat, thereby improving the safety of the battery.

[0027] Furthermore, bottom plates 9 are fixedly connected to both sides of the bottom of the frame 1 , and anti-skid plates 10 are fixedly connected to the bottoms of the two bottom plates 9 . Specifically, the anti-skid plates 10 are used to improve the stability of the frame 1 .

[0028] Furthermore, a slider 11 is fixedly connected to one side of the low-temperature superconductor plate 3, and the slider 11 is slidably connected to the side wall of the frame 1 through a slide rail 12. Specifically, the slider 11 slides in the slide rail 12, so that the low-temperature superconductor plate 3 can be more stable during movement.

[0029] Furthermore, one end of all the copper rods 8 passes through the bottom of the frame 1 .

[0030] Furthermore, a slot 7 for cooperating with the insertion rod 5 is provided on one end of the low-temperature superconductor plate 3 and on the fixing plate 6. Specifically, the insertion rod 5 is plugged into the slot 7 to limit the position of the low-temperature superconductor plate 3.

[0031] Furthermore, the slider 11 and the slide rail 12 are clearance-fitted.

[0032] In summary: the anti-slip plate 10 is used to improve the stability of the frame 1, and the slider 11 is used to slide in the slide rail 12, so that the low-temperature superconductor plate 3 can be more stable during movement, and the insertion rod 5 is plugged into the slot 7 to limit the low-temperature superconductor plate 3.

[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 protection board for preventing overcharging, comprising a frame (1), characterized in that: A protective plate (2) is fixedly connected to the inner side of the frame (1), a plurality of copper rods (8) are fixedly connected to the bottom of the protective plate (2), and a plurality of heat-conducting rods (4) are fixedly connected to the top of the protective plate (2); a low-temperature superconductor plate (3) is slidably connected to the upper inner side of the frame (1), an extended portion of the low-temperature superconductor plate (3) is located outside the frame (1), a fixing plate (6) is fixedly connected to one side of the outer wall of the frame (1), and a plugging rod (5) is plugged into the fixing plate (6), and one end of the plugging rod (5) passes through one end of the low-temperature superconductor plate (3).

2. A lithium battery protection board for preventing overcharging according to claim 1, characterized in that: Bottom plates (9) are fixedly connected to both sides of the bottom of the frame (1), and anti-slip plates (10) are fixedly connected to the bottoms of the two bottom plates (9).

3. A lithium battery protection board for preventing overcharging according to claim 2, characterized in that: A slider (11) is fixedly connected to one side of the low-temperature superconductor plate (3), and the slider (11) is slidably connected to the side wall of the frame (1) via a slide rail (12).

4. A lithium battery protection board for preventing overcharging according to claim 1, characterized in that: One end of all the copper rods (8) passes through the bottom of the frame (1).

5. The lithium battery protection board for preventing overcharging according to claim 1, characterized in that: A slot (7) for cooperating with the insertion rod (5) is provided on one end of the low-temperature superconductor plate (3) and on the fixing plate (6).

6. A lithium battery protection board for preventing overcharging according to claim 3, characterized in that: The sliding block (11) and the sliding rail (12) are clearance-matched.

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