Support structure for lithium ion battery tab

Abstract

The utility model relates to the technical field of lithium ion batteries, in particular to a support structure for lithium ion battery tabs, which comprises a lithium ion battery pack and a support plate, a plurality of groups of positive and negative tabs are arranged at the top of the lithium ion battery pack, and the support plate is assembled above the lithium ion battery pack. And separation areas with the same number as batteries in the lithium ion battery pack are arranged at the bracket plate. According to the support structure for the lithium ion battery tabs, the partition areas, the empty grooves and the tab partition strips are arranged, the support structure is assembled on the top of a lithium ion battery pack, one tab partition strip is arranged in the empty groove in each partition area and used for separating a positive tab from a negative tab, and even if the tab partition strips are bent, the tab partition strips cannot be broken or damaged; according to the lithium ion battery, the tab is effectively prevented from being damaged due to external force in the mounting and using processes, the stability of internal connection of the battery pack is ensured, the service life of the lithium ion battery can be prolonged in a high-strength using environment, and the problem that the tab is easily bent and damaged due to external force is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium - ion batteries, and particularly to a bracket structure for the tabs of lithium - ion batteries. Background Technique

[0002] Lithium - ion batteries are widely used in portable electronic devices, electric vehicles, and energy storage systems, and are popular in the market due to their high energy density and long cycle life. Inside a lithium - ion battery, the tabs are important components connecting the battery cells and the external circuit, usually made of aluminum or copper. The positive and negative tabs are connected to the electrode material by welding or ultrasonic welding to ensure a smooth current conduction path inside the battery. The function of the tabs is not only to conduct current, but also to fix the electrode material and maintain the stability of the battery structure.

[0003] In the existing lithium - ion batteries, the bonding technology is mostly used for fixing the tabs. This method is prone to tab damage under external forces during installation and use. For example, when assembling the battery pack, the tabs may be bent or broken due to external forces, directly affecting the performance and life of the battery. The bonded tabs are also easily affected by thermal stress during the use of the battery, resulting in loosening at the bonding point, and further causing unstable internal connections of the battery.

[0004] Therefore, a bracket structure for the tabs of lithium - ion batteries is needed to solve the above - mentioned technical defects. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bracket structure for the tabs of lithium - ion batteries to solve the problem that the tabs may be bent or broken under external forces as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A bracket structure for the tabs of lithium - ion batteries, including a lithium - ion battery pack and a bracket plate. Multiple positive and negative tabs are arranged on the top of the lithium - ion battery pack. A bracket plate is assembled above the lithium - ion battery pack. The bracket plate is provided with partition areas equal in number to the number of batteries in the lithium - ion battery pack. Empty slots are opened in each partition area. A dust - proof net is welded in front and at the back inside each empty slot. Slots are respectively opened at the edges of the dust - proof net, and tab separators are embedded in the slots. The tab separators are fixed in the slots by laser electric welding.

[0007] Preferably, the positive and negative tabs extend upward from both sides of the tab separator to above the bracket plate, and the positive and negative tabs do not contact the tab separator.

[0008] Preferably, the height of the top of the tab separator is located at two - thirds of the height of the positive and negative tabs.

[0009] Preferably, the thickness of the dust-proof net is the same as the depth of the empty slot, and the dust-proof net is symmetrically distributed about the horizontal center line of the ear separator strip in the empty slot.

[0010] Preferably, the support plate includes four groups of square rods welded to each other, and a hollow plate frame is formed up and down through the square rods.

[0011] Preferably, welding feet are provided at the four corners of the partition area, and the welding feet are respectively welded and fixed to the inner wall of the support plate.

[0012] Preferably, the welding feet are in a "Z" shape, and the welding feet are made of insulating plastic.

[0013] Preferably, a set of bolt holes are opened at each of the four corners of the support plate, fixing blocks are welded to the four corners of the outside of the lithium-ion battery pack, and fixing bolts are fixedly connected between the bolt holes and the fixing blocks.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The support structure for the ear of the lithium-ion battery not only avoids damage to the ear caused by external forces during installation and use, reduces the entry of pollutants into the battery pack, but also simplifies the maintenance and replacement process of the battery pack and reduces the maintenance cost;

[0015] (1) By providing a partition area, an empty slot, and an ear separator strip, the support structure is assembled on the top of the lithium-ion battery pack. The battery pack is partitioned by multiple partition areas with the same number as the lithium-ion battery pack. A set of ear separator strips are arranged in the empty slots in each partition area to separate the positive and negative ears. Even if the ear separator strip is bent, it will not break or be damaged, effectively avoiding damage to the ears caused by external forces during installation and use, ensuring the stability of the internal connection of the battery pack, and being able to extend the service life of the lithium-ion battery in a high-intensity use environment;

[0016] (2) By providing a dust-proof net, a lithium-ion battery pack, and an ear separator strip, dust-proof nets are arranged in front of and behind the ear separator strip. The dust-proof net covers the lithium-ion battery pack to prevent dust and other impurities from falling into the gaps and affecting the connection performance of the lithium-ion battery pack, avoiding a decrease in connection performance or a short-circuit phenomenon caused by pollutants entering the battery pack. Especially in outdoor or industrial environments, the dust-proof net improves the application performance of the battery pack in a dusty environment;

[0017] (3) By providing slots, welding feet, support plates, partition areas, and fixing bolts, each set of tab separators is welded inside the slots. If damaged, the corresponding tab separator can be directly pried out for replacement. Similarly, the entire partition area is installed on the support plate through four groups of welding feet. If the battery pack is damaged and needs to be repaired, the partition area can be removed to test the damaged lithium-ion battery pack individually, facilitating precise maintenance and improving maintenance efficiency. The entire support plate can also be removed from the lithium-ion battery pack through the fixing bolts. The detachable design greatly simplifies the maintenance and replacement process of the battery pack and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view structural schematic diagram of the present utility model;

[0019] Figure 2 is a top view structural schematic diagram of the present utility model;

[0020] Figure 3 is a side view structural schematic diagram of the tab separator of the present utility model;

[0021] Figure 4 is a three-dimensional structural schematic diagram of the dust filter net of the present utility model.

[0022] In the figure: 1, support plate; 2, tab separator; 3, positive and negative tabs; 4, fixing bolt; 5, bolt hole; 6, fixing block; 7, lithium-ion battery pack; 8, square rod; 9, partition area; 10, empty slot; 11, welding foot; 12, dust filter net; 13, slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1: Please refer to Figures 1-4, a bracket structure for the tabs of a lithium-ion battery, comprising a lithium-ion battery pack 7 and a bracket plate 1. Multiple positive and negative tabs 3 are provided at the top of the lithium-ion battery pack 7. A bracket plate 1 is assembled above the lithium-ion battery pack 7. The bracket plate 1 is provided with partition areas 9 having the same number as the number of batteries in the lithium-ion battery pack 7. Empty slots 10 are opened in each of the partition areas 9. A dust-proof net 12 is welded in front and at the back inside each of the empty slots 10. Slots 13 are respectively opened at the edges of the dust-proof net 12. A tab separator 2 is embedded in each of the slots 13. The tab separator 2 is fixed in the slot 13 by laser electric welding. The positive and negative tabs 3 extend upward from both sides of the tab separator 2 to above the bracket plate 1, and the positive and negative tabs 3 do not contact the tab separator 2. The height of the top of the tab separator 2 is located at two-thirds of the height of the positive and negative tabs 3;

[0025] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, this bracket structure is assembled on the top of the lithium-ion battery pack 7 and is partitioned by multiple partition areas 9 having the same number as the number of battery packs of the lithium-ion battery pack 7. A tab separator 2 is provided in the empty slot 10 in each partition area 9 for separating the positive and negative tabs 3. Even if the tab separator 2 is bent, it will not break or be damaged, effectively avoiding the damage to the tabs caused by external forces during installation and use.

[0026] Embodiment 2: The thickness of the dust-proof net 12 is the same as the depth of the opening of the empty slot 10, and the dust-proof nets 12 are symmetrically distributed about the horizontal center line of the tab separator 2 in the empty slot 10;

[0027] Specifically, as Figure 2 , Figure 3 and Figure 4 shown, dust-proof nets 12 are provided in front and at the back of the tab separator 2. The dust-proof nets 12 cover above the lithium-ion battery pack 7 and are used to prevent dust and other impurities from falling into the gaps and affecting the connection performance of the lithium-ion battery pack 7, avoiding the decrease in connection performance or short-circuit phenomenon caused by pollutants entering the inside of the battery pack.

[0028] Embodiment 3: The bracket plate 1 includes four square rods 8 welded to each other to form an upper and lower hollow plate frame. Welding feet 11 are provided at the four corners of the partition area 9. The welding feet 11 are respectively welded and fixed to the inner wall of the bracket plate 1. The welding feet 11 are in a "Z" shape, and the welding feet 11 are components made of insulating plastic. A bolt hole 5 is opened at each of the four corners of the bracket plate 1. Fixing blocks 6 are welded to the four corners outside the lithium-ion battery pack 7. A fixing bolt 4 is fixedly connected between the bolt hole 5 and the fixing block 6;

[0029] Specifically, as Figure 1 , Figure 2 and Figure 3As shown, each group of tab separators 2 is welded in the slot 13. If damaged, the corresponding tab separator 2 can be directly pried out for replacement. Similarly, the entire partition area 9 is installed on the support plate 1 through four groups of welding feet 11. If the battery pack is damaged and needs to be repaired, the partition area 9 can be removed, and the damaged lithium-ion battery pack 7 can be tested separately, which is convenient for precise maintenance.

[0030] Working principle: Each group of tab separators 2 is welded in the slot 13. If damaged, the corresponding tab separator 2 can be directly pried out for replacement. Similarly, the entire partition area 9 is installed on the support plate 1 through four groups of welding feet 11. If the battery pack is damaged and needs to be repaired, the partition area 9 can be removed, and the damaged lithium-ion battery pack 7 can be tested separately, which is convenient for precise maintenance and improves the maintenance efficiency. The entire support plate 1 can also be removed from the lithium-ion battery pack 7 through the fixing bolts 4. Dust-proof nets 12 are provided in front of and behind the tab separator 2, and the dust-proof nets 12 cover the lithium-ion battery pack 7 to prevent dust and other impurities from falling into the gaps and affecting the connection performance of the lithium-ion battery pack 7, avoiding the decrease in connection performance or short-circuit phenomenon caused by the entry of pollutants into the battery pack. The battery pack is partitioned by multiple partition areas 9 with the same number as the number of lithium-ion battery packs 7 in the battery pack. A group of tab separators 2 is provided in the empty slot 10 in each partition area 9 to separate the positive and negative tabs 3. Even if the tab separator 2 is bent, it will not break or be damaged.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A support structure for a lithium-ion battery tab, comprising a lithium-ion battery pack (7) and a support plate (1), characterized in that: A plurality of groups of positive and negative tabs (3) are arranged on the top of the lithium-ion battery pack (7), a support plate (1) is mounted above the lithium-ion battery pack (7), a partition area (9) having the same number as the number of batteries in the lithium-ion battery pack (7) is arranged on the support plate (1), each of the partition areas (9) is provided with an empty slot (10), a group of dustproof nets (12) are welded at the front and rear of the empty slots (10), slots (13) are respectively arranged at the edges of the dustproof nets (12), tab spacers (2) are embedded in the slots (13), and the tab spacers (2) are fixed in the slots (13) by laser welding.

2. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: The positive and negative electrode tabs (3) extend upward from both sides of the tab spacer (2) to above the support plate (1), and the positive and negative electrode tabs (3) are not in contact with the tab spacer (2).

3. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: The top of the tab spacer (2) is located at a height that is two-thirds of the height of the positive and negative tabs (3).

4. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: The thickness of the dustproof net (12) is the same as the slot depth of the empty slot (10), and the dustproof net (12) is symmetrically distributed in the empty slot (10) about the horizontal center line of the tab spacer (2).

5. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: The support plate (1) comprises four groups of mutually welded square rods (8), and upper and lower hollow plate frames are formed by the square rods (8).

6. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: The four corners of the separation area (9) are each provided with welding feet (11), and the welding feet (11) are respectively welded and fixed to the inner wall of the bracket plate (1).

7. A support structure for a lithium-ion battery tab according to claim 6, characterized in that: The welding foot (11) is in a "Z" shape and is a component made of insulating plastic.

8. The support structure for a lithium-ion battery tab according to claim 1, characterized in that: A group of bolt holes (5) are respectively provided at the four corners of the bracket plate (1); fixing blocks (6) are welded to the four corners of the exterior of the lithium-ion battery pack (7); fixing bolts (4) are fixedly connected between the bolt holes (5) and the fixing blocks (6).

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