Lithium battery protection plate with insulation effect

Abstract

The utility model discloses a lithium battery protection plate with insulating effect relates to lithium battery pack technical field, the utility model discloses a protection plate main part, the protection plate main part top both sides are connected with first shield, and the both sides of first shield are connected with second shield all, and the bolt is penetrated to the top of first shield, and the buckle is connected to the bottom of first shield, and the clamping groove is established to the bottom both sides of protection plate main part. The utility model discloses the setting of first shield, and first shield can cover all the components and parts of protection plate main part top, and the welding area of lead-out wire and pole piece is shielded and protected, effectively reduces the phenomenon that the exposed pin, soldering etc. position and other conductor contact are caused by test, knock etc. reason, and the insulating effect of increasing protective property is played.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery pack technology, specifically to a lithium battery protective plate with insulating properties. Background Technology

[0002] A lithium battery protection board, also known as a lithium battery shielding board, is an integrated circuit board primarily designed to protect rechargeable lithium batteries. This protection is necessary due to the inherent characteristics of lithium batteries. Because the materials used in lithium batteries dictate that they cannot be overcharged, over-discharged, over-currented, short-circuited, or subjected to excessively high temperatures during charging and discharging, lithium battery modules are always accompanied by a lithium battery protection board.

[0003] Existing lithium battery protection boards are mainly composed of circuit boards, various types of components, electrodes, leads, and other parts. The electrodes need to be soldered to the positive and negative electrodes of the lithium battery, thus being exposed. The pins and leads of the components are also partially exposed, resulting in poor insulation and protection. This makes it easy for these components to leak or short-circuit when they come into contact with conductors. For example, during production testing or subsequent use, impacts to the casing can cause structural displacement, which can easily damage the protection board or lead to contact with conductors. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a lithium battery protection plate with insulating effect to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lithium battery protective plate with insulating effect, comprising a protective plate body, a first protective cover connected to the top two sides of the protective plate body, and a second protective cover connected to both sides of the first protective cover, a bolt penetrating the top of the first protective cover, a buckle connected to the bottom of the first protective cover, and slots provided on both sides of the bottom of the protective plate body.

[0006] By adopting the above technical solution, after the main body of the protective plate and the lithium battery are assembled, the staff installs the first shield and the second shield on the lithium battery protective plate from top to bottom, making the buckle fit into the card slot, thereby preventing the first shield from falling off. Then, bolts are screwed into the top of the first shield, and the bolts do not contact the main body of the protective plate. The main reason is that the redundant design of the superposition of the bolts and the buckles increases the structural connection stability. The bolts and the buckles resist each other, increasing the rotational resistance of the bolts and reducing the phenomenon of bolt loosening and falling off. The bolts抵住the buckles to prevent the buckles from bending and deforming and falling off. The anti-vibration performance is better than that of a single buckle or a single bolt. And even if the bolts fall off, it can still be limited by the buckles. During use, the first shield can cover all the components on the top of the main body of the protective plate and shield and protect the welding areas of the lead-out wires and the pole pieces, effectively reducing the occurrence of the phenomenon that the exposed pins, soldering positions, etc. contact other conductors due to reasons such as testing and bumping. The second shield can cover the pole pieces to prevent the pole pieces from contacting the side wall of the battery pack housing, especially when the battery pack uses a metal housing, thereby reducing the occurrence of leakage, short circuit and other phenomena.

[0007] Further, a plurality of card slots are provided, and the cross-sections of the plurality of card slots are all in an inverted "convex" shape.

[0008] By adopting the above technical solution, the number of card slots matches the number of buckle groups, which can increase the connection area, and at the same time, the shape of the card slot is convenient for the buckles to resist.

[0009] Further, the buckle is detachably connected to the card slot.

[0010] By adopting the above technical solution, the staff installs the first shield and the second shield on the lithium battery protective plate from top to bottom, making the buckle fit into the card slot, thereby preventing the first shield from falling off.

[0011] Further, a plurality of groups of buckles are provided, and three buckles are in a group, and the plurality of groups of buckles are distributed in an annular array.

[0012] By adopting the above technical solution, by increasing the number of buckles, the structural connection area is increased, so as to increase the stability after the first shield is installed.

[0013] Further, the bolt is threadedly connected to the first shield, and the bolt abuts against the buckle.

[0014] By adopting the above technical solution, the bolt does not contact the main body of the protective plate. The main reason is that the redundant design of the superposition of the bolts and the buckles increases the structural connection stability. The bolts and the buckles resist each other, increasing the rotational resistance of the bolts and reducing the phenomenon of bolt loosening and falling off. The bolts抵住the buckles to prevent the buckles from bending and deforming and falling off. The anti-vibration performance is better than that of a single buckle or a single bolt. And even if the bolts fall off, it can still be limited by the buckles.

[0015] Furthermore, the top of the protective plate body is provided with multiple components, and electrode plates are fixed on both sides of the top of the protective plate body. A lead wire is fixed on one side of the top of the protective plate body.

[0016] By adopting the above technical solution, after the protective plate body is produced, the electrode sheet is welded to the positive and negative electrodes of the lithium battery, and can be connected to the connector through the lead wire for easy charging and discharging.

[0017] Furthermore, the second shield is located on one side of the electrode, and the cross-section of the second shield is "C" shaped, with a gap between the second shield and the electrode.

[0018] By adopting the above technical solution, the second shield can cover the electrode plates and prevent them from contacting the side wall of the battery pack casing. In particular, since the battery pack uses a metal casing, this reduces the occurrence of leakage and short circuits. The gap between the second shield and the electrode plates facilitates air circulation, which in turn facilitates heat dissipation when current flows through the electrode plates.

[0019] Furthermore, the first protective cover, the second protective cover, and the buckle are all integrally molded from PC material using a core-pulling injection mold, and the bolts are made of PA-GF material.

[0020] By adopting the above technical solution, the first protective cover, the second protective cover, the bolts, and the buckles are all made of insulating materials, which reduces the occurrence of short circuits and leakage in the main body of the protective plate caused by the conduction current. Among them, the first protective cover, the second protective cover, and the buckles made of PC material have excellent flame retardancy, high strength, high toughness, good heat resistance, good dimensional stability, and easy processing, while the bolts made of glass fiber reinforced nylon have high strength, high rigidity, good heat resistance, excellent insulation, flame retardancy, and relatively good processing, which can meet the needs of this technical solution and long-term daily use.

[0021] Furthermore, multiple heat dissipation holes are provided on both sides of the outer surface of the first protective cover, on both sides of the back, and on both sides.

[0022] By adopting the above technical solution, multiple narrow heat dissipation holes are densely distributed to avoid the first shield from affecting the heat dissipation of the components, and the narrow heat dissipation holes reduce the occurrence of objects entering.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. By setting up the first protective cover, this utility model can completely cover all the components on the top of the protective plate body and protect the soldering areas of the lead wires and electrode plates, effectively reducing the occurrence of exposed pins, soldered parts and other conductors coming into contact with each other due to testing, bumps and other reasons; increasing protection and achieving an insulation effect.

[0025] 2. By setting up a second protective cover, this utility model can shield the electrode plates, preventing them from contacting the side wall of the battery pack casing. This is especially beneficial when the battery pack uses a metal casing, thereby reducing leakage and short circuits and improving the insulation protection surface.

[0026] 3. This utility model, through the design of slots, bolts, and buckles, allows for the assembly of the first and second protective covers from top to bottom onto the lithium battery protective plate. The buckles are then inserted into the slots to prevent the first protective cover from falling off. Bolts are then screwed into the top of the first protective cover. These bolts do not contact the main body of the protective plate; the redundant design of the bolts and buckles increases the structural connection stability. The bolts and buckles abut against each other, increasing the resistance to bolt rotation and reducing the possibility of bolt loosening or falling off. The bolts also hold the buckles in place to prevent them from bending, deforming, or falling off. The vibration resistance is better than that of a single buckle or bolt, and even if the bolt falls off, it can still be contained by the buckles. It is easy to assemble and disassemble, and the connection is stable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a side sectional view of the present invention.

[0029] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the image;

[0030] Figure 4 This is a schematic diagram of the main structure of the protective plate of this utility model;

[0031] Figure 5 This is a top-view structural diagram of the first protective cover of this utility model.

[0032] In the diagram: 1. Protective plate body; 2. Components; 3. Electrode; 4. Lead wire; 5. First protective cover; 6. Second protective cover; 7. Slot; 8. Bolt; 9. Buckle; 10. Heat dissipation hole. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of this utility model will be described below based on its overall structure.

[0035] Example 1:

[0036] A lithium battery protective plate with insulating properties, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the device includes a protective plate body 1. First protective covers 5 are connected to the top two sides of the protective plate body 1. Second protective covers 6 are connected to both sides of the first protective covers 5. The second protective covers 6 are located on one side of the electrode 3. The cross-section of the second protective cover 6 is "C"-shaped. A gap is left between the second protective cover 6 and the electrode 3. During use, the first protective cover 5 can completely cover the components 2 on the top of the protective plate body 1 and protect the lead wire 4 and the soldering area of ​​the electrode 3, effectively reducing the occurrence of exposed pins, solder joints, etc., coming into contact with other conductors due to testing, impacts, etc. The second protective cover 6 can cover the electrode 3, preventing the electrode 3 from contacting the side wall of the battery pack casing, especially since the battery pack uses a metal casing, thereby reducing leakage and short circuits. A bolt 8 passes through the top of the first protective cover 5 and is threadedly connected to the first protective cover 5. A buckle 9 is connected to the bottom of the first protective cover 5, and the bolt 8 abuts against the buckle 9. The buckle 9 is designed to... There are multiple sets of three clips 9 per set, and multiple sets of clips 9 are arranged in a ring array. The bottom sides of the protective plate body 1 are provided with slots 7. The clips 9 are detachably connected to the slots 7. There are multiple slots 7, and the cross-section of each slot 7 is an inverted "U" shape. After the protective plate body 1 is assembled with the lithium battery, the workers install the first cover 5 and the second cover 6 on the lithium battery protective plate from top to bottom, so that the clips 9 are inserted into the slots 7, thereby preventing the first cover 5 from falling off. Then, the bolts 8 are screwed into the top of the first cover 5. The bolts 8 do not contact the protective plate body 1. The redundant design of the bolts 8 and clips 9 increases the structural connection stability. The bolts 8 and clips 9 abut against each other, increasing the rotation resistance of the bolts 8 and reducing the phenomenon of bolts 8 loosening and falling off. The bolts 8 abut against the clips 9 to prevent the clips 9 from bending, deforming and falling off. The vibration resistance is better than that of a single clip 9 or a single bolt 8, and even if the bolt 8 falls off, it can still be limited by the clips 9.

[0037] See Figure 1 , Figure 2 and Figure 4 In the above embodiment, the top of the protective plate body 1 is provided with multiple components 2, and the top two sides of the protective plate body 1 are fixed with electrode plates 3. The top one side of the protective plate body 1 is fixed with a lead wire 4. After the protective plate body 1 is produced, the electrode plates 3 are welded to the positive and negative electrodes of the lithium battery, and can be connected to the connector through the lead wire for easy charging and discharging.

[0038] Example 2:

[0039] Based on the above embodiment one, in order to increase structural strength, insulation, service life, etc., the following settings are now implemented.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 5In the above embodiments, the first protective cover 5, the second protective cover 6, and the buckle 9 are all integrally molded from PC material using a core-pulling injection mold. The PC material first protective cover 5, second protective cover 6, and buckle 9 have excellent flame retardancy, high strength, high toughness, good heat resistance, good dimensional stability, and easy processing. The bolt 8 is made of PA66-GF30 material. The bolt 8 made of glass fiber reinforced nylon has high strength, high rigidity, good heat resistance, excellent insulation, flame retardancy, and relatively good processing.

[0041] Example 3:

[0042] Based on the above embodiment one, in order to avoid the structural enclosure affecting heat dissipation, the following settings are now adopted.

[0043] See Figure 1 , Figure 2 and Figure 5 In the above embodiment, multiple heat dissipation holes 10 are provided on both sides of the outer surface, both sides of the back, and both sides of the first protective cover 5. By densely distributing multiple narrow heat dissipation holes 10, the first protective cover 5 is prevented from being closed and affecting the heat dissipation of the component 2. Moreover, the narrow shape of the heat dissipation holes 10 reduces the occurrence of objects entering the device.

[0044] The implementation principle of this utility model is as follows: First, after the protective plate body 1 is produced, the electrode 3 is welded to the positive and negative electrodes of the lithium battery. It should be noted that the size, shape, spacing, quantity and other parameters of the protective plate body 1 and the electrode 3 are customized according to the manufacturer's model. The corresponding shapes of the first protective cover 5 and the second protective cover 6 match the shapes of the protective plate body 1 and the electrode 3 to avoid installation failure. It is best that the electrode 3 is inverted L-shaped to adapt to the installation of this technical solution from top to bottom.

[0045] After the protective plate body 1 is assembled with the lithium battery, the workers install the first protective cover 5 and the second protective cover 6 on the lithium battery protective plate from top to bottom, so that the buckle 9 is inserted into the slot 7, thereby preventing the first protective cover 5 from falling off. Then, the bolt 8 is screwed into the top of the first protective cover 5. The bolt 8 does not contact the protective plate body 1. The redundant design of the bolt 8 and the buckle 9 increases the structural connection stability. The bolt 8 and the buckle 9 abut against each other, increasing the rotation resistance of the bolt 8 and reducing the phenomenon of the bolt 8 loosening and falling off. The bolt 8 abuts against the buckle 9 to prevent the buckle 9 from bending, deforming and falling off. The vibration resistance is better than that of a single buckle 9 or a single bolt 8. Even if the bolt 8 falls off, it can still be limited by the buckle 9.

[0046] In use, the first shield 5 completely covers the components 2 on the top of the main body 1 of the protective plate, and also protects the soldering areas of the leads 4 and the electrode 3, effectively reducing the occurrence of exposed pins, solder joints, and other conductors coming into contact with each other due to testing, bumps, or other reasons. The second shield 6 covers the electrode 3, preventing it from contacting the side wall of the battery pack casing, especially since the battery pack uses a metal casing, thereby reducing leakage and short circuits. At the same time, the densely distributed multiple narrow heat dissipation holes 10 prevent the first shield 5 from affecting the heat dissipation of the components 2, and the narrow heat dissipation holes 10... The system reduces the occurrence of objects entering the enclosure; and the first protective cover 5, the second protective cover 6, the bolt 8, and the buckle 9 are all made of insulating materials, reducing the occurrence of short circuits and leakage caused by conductive current in the main body 1 of the protective plate. Among them, the first protective cover 5, the second protective cover 6, and the buckle 9 made of PC material have excellent flame retardancy, high strength, high toughness, good heat resistance, good dimensional stability, and easy processing, while the bolt 8 made of glass fiber reinforced nylon has high strength, high rigidity, good heat resistance, excellent insulation, flame retardancy, and relatively good processing, which can meet the requirements of this technical solution and long-term daily use.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A lithium battery protective plate with insulating effect, comprising a protective plate body (1), characterized in that: On both sides of the top of the protection plate main body (1), a first protective cover (5) is connected, and a second protective cover (6) is connected to both sides of the first protective cover (5). A bolt (8) penetrates through the top of the first protective cover (5). A buckle (9) is connected to the bottom of the first protective cover (5). Slots (7) are opened on both sides of the bottom of the protection plate main body (1).

2. The lithium battery protective plate with insulating effect according to claim 1, characterized in that: A plurality of the slots (7) are provided, and the cross-sections of the plurality of slots (7) are all in an inverted "convex" shape.

3. The lithium battery protective plate with insulating effect according to claim 2, characterized in that: The buckle (9) is detachably connected to the slot (7).

4. The lithium battery protective plate with insulating effect according to claim 3, characterized in that: A plurality of groups of the buckles (9) are provided, and three buckles (9) are in a group. The plurality of groups of buckles (9) are distributed in an annular array.

5. The lithium battery protective plate with insulating effect according to claim 4, characterized in that: The bolt (8) is threadedly connected to the first protective cover (5), and the bolt (8) abuts against the buckle (9).

6. The lithium battery protective plate with insulating effect according to claim 1, characterized in that: A plurality of components (2) are provided on the top of the protection plate main body (1), and pole pieces (3) are fixed to both sides of the top of the protection plate main body (1). A lead wire (4) is fixed to one side of the top of the protection plate main body (1).

7. The lithium battery protective plate with insulating effect according to claim 6, characterized in that: The second protective cover (6) is located on one side of the pole piece (3), and the cross-section of the second protective cover (6) is in a "C" shape. A gap is left between the second protective cover (6) and the pole piece (3).

8. The lithium battery protective plate with insulating effect according to claim 7, characterized in that: The first protective cover (5), the second protective cover (6) and the buckle (9) are all integrally formed by a core-pulling injection mold using PC material, and the bolt (8) is made of PA66-GF30 material.

9. The lithium battery protection plate with insulation effect according to claim 8, wherein: A plurality of heat dissipation holes (10) are opened on both sides, the back and both sides of the outer surface of the first protective cover (5).

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