Anti-loosening lithium battery electrode connection structure

Abstract

The utility model discloses an anti-loosening lithium battery electrode connecting structure, which relates to the technical field of lithium battery parts and comprises a lithium battery body, an electrode column is arranged on the lithium battery body, a contact cover is mounted at the top of the electrode column, a power transmission line is arranged at the top of the contact cover, and the bottom end of the power transmission line penetrates through the contact cover. The outer wall of the contact cover is movably sleeved with a fastening cover, the edge of the bottom of the contact cover is fixedly provided with a baffle ring extending outwards, the bottom of the electrode column is fixedly provided with an assembling base, the inner wall of the fastening cover is connected and installed outside the assembling base in a threaded mode, and the lithium battery body is further provided with a pressing assembly. The structure can be conveniently installed and used and is simple to assemble and convenient to operate, the contact cover is pressed on the electrode column through the pressing rod, the fastening cover is further arranged below the contact cover for double fixation, the pressing rod is fixed and limited by the pressing bolt, and the pressing bolt is further provided with an anti-loosening design, so that the connecting structure is more stable.

Description

Technical Field

[0001] This utility model specifically relates to an anti-loosening lithium battery electrode connection structure, belonging to the field of lithium battery component technology. Background Technology

[0002] Lithium-ion batteries, with their significant advantages of high-efficiency energy storage and green environmental protection, have been deeply integrated into many key fields such as electric vehicles, mobile electronic devices, and large-scale energy storage systems.

[0003] In specific applications of lithium batteries, the electrode connection structure is a core component, and its performance directly affects the overall performance, safety, reliability, and long service life of the battery. It plays a decisive role in the stable operation of lithium batteries. Most electrode connection structures also need to consider subsequent maintenance and replacement, so special improvements are required.

[0004] Currently, the common lithium battery electrode connection methods on the market mainly include bolt fastening, welding, and snap-fit ​​connection. However, in complex and ever-changing actual application scenarios, these traditional connection methods are prone to loosening under long-term vibration. Once the connection structure becomes loose, the loose and incomplete connection of the electrodes and conductive components will cause local overheating problems, which may trigger a series of chain reactions, or even cause catastrophic accidents such as fire and explosion.

[0005] For example, Chinese invention patent application CN202110263004.9 discloses a safety protection structure for lithium battery electrode sheets, including wires, connecting blocks, and receiving blocks. Two lugs are fixed to both sides of one end of the connecting block, and two elastic blocks are fixed to the two lugs respectively. This invention uses a hook-and-loop connection to connect the electrode sheet and the receiving terminal, resulting in a more stable connection. When separation is needed, simply pressing the squeezing block disengages the hook from the groove, allowing for separation. Simultaneously, the electrode sheet is installed in a movable chamber, which, under the elastic force of a spring, maintains tight contact with the connecting terminal, eliminating the need to rely on the electrode sheet's own elasticity to ensure contact quality and avoiding poor contact.

[0006] The aforementioned document describes a method for achieving current flow through contact between wires and electrode plates, and includes a heat dissipation function to prevent high temperatures. It also uses springs to prevent the wires and electrode plates from becoming loose. However, this method is complex and difficult to assemble, hence the present invention. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of the existing technology by providing a non-loosening lithium battery electrode connection structure. This structure can be easily installed and used, and is simple to assemble and easy to operate. The contact cover is pressed onto the electrode post by a clamping rod, and a fastening cover is also provided below the contact cover for double fixation.

[0008] A non-loosening lithium battery electrode connection structure includes a lithium battery body, two electrode posts on the lithium battery body, a contact cover on the top of each electrode post, a power transmission wire on the top of the contact cover, the bottom end of the power transmission wire passing through the contact cover and able to contact the top of the electrode post, a fastening cover movably fitted on the outer wall of the contact cover, an outwardly extending retaining ring fixed to the bottom edge of the contact cover, an assembly base fixed to the bottom of each electrode post, and the inner wall of the fastening cover being threadedly connected to the outside of the assembly base, with a gap between the retaining ring and the assembly base. A clamping assembly is also installed on the lithium battery body.

[0009] An operating base plate is fixed to the bottom of the fastening cover. A heat sink is fixed between the operating base plate and the outer wall of the fastening cover. The operating base plate is used for manual screwing, while the heat sink provides auxiliary heat dissipation.

[0010] A pressure bar is fixed on the outer wall of the contact cover. The clamping assembly includes a limiting post, a rotating block is rotatably engaged on the limiting post, and a clamping rod is hinged to one side of the rotating block. An anti-loosening mechanism is installed on the lithium battery body between the electrode posts. The clamping rod needs to be made of insulating material or have an insulating layer at the bottom of the clamping rod.

[0011] The bottom of the clamping rod is provided with a snap-fit ​​notch for use with the pressure crossbar. One end of the clamping rod extends obliquely downward and is fixed to a horizontal plate. The horizontal plate is provided with an arc-shaped notch, and the inner wall of the arc-shaped notch can fit against the outer wall of the pressing bolt.

[0012] The arc-shaped notch is provided with a lower groove, and an arc-shaped protrusion is fixed inside the lower groove.

[0013] The anti-loosening mechanism includes a pressing bolt, which is threaded onto the top of the lithium battery. The pressing bolt is fitted with an upper anti-loosening ring and a lower anti-loosening ring, and the lower anti-loosening ring can be embedded in a lower groove.

[0014] An anti-loosening spring is installed between the upper and lower anti-loosening rings, and the bottom of the lower anti-loosening ring is provided with a bottom groove that engages with the arc-shaped protrusion.

[0015] The top of the pressing bolt has a through channel, the lower part of the inner wall of the through channel has a receiving notch, a limiting plate passes through the through channel, and a side protrusion is provided on the limiting plate corresponding to the receiving notch. A support column is fixed to the bottom of the limiting plate, and a magnet is fixed to the bottom of the support column. An iron plate seat is fixed to the top of the lithium battery body. The height of the receiving notch is greater than the height of the side protrusion, which can improve the fault tolerance rate of different heights of the pressing bolt.

[0016] The beneficial effects of this utility model are as follows: This structure can be installed and used conveniently, the assembly is simple and the operation is convenient. The contact cover is pressed onto the electrode post by the clamping rod, and a fastening cover is also provided below the contact cover for double fixation. The clamping rod is fixed and limited by the pressing bolt. The pressing bolt is also designed to prevent loosening, making this connection structure more stable. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the compression crossbar structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the electrode post structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the clamping component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the anti-loosening mechanism of this utility model.

[0022] In the diagram: 1. Lithium battery body; 101. Electrode post; 102. Assembly base; 2. Contact cover; 201. Power transmission line; 202. Fastening cover; 203. Heat sink; 204. Pressure bar; 3. Clamping assembly; 301. Limiting post; 302. Rotating block; 303. Clamping rod; 304. Horizontal plate; 305. Arc-shaped protrusion; 4. Anti-loosening mechanism; 401. Lowering bolt; 402. Upper anti-loosening ring; 403. Lower anti-loosening ring; 404. Anti-loosening spring; 405. Limiting plate; 406. Support post; 407. Magnet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5As shown, a lithium battery electrode connection structure for preventing loosening includes a lithium battery body 1, on which electrode posts 101 are provided. There are two electrode posts 101. A contact cover 2 is installed on the top of the electrode post 101. A power transmission wire 201 is provided on the top of the contact cover 2. The bottom end of the power transmission wire 201 passes through the contact cover 2 and can contact the top of the electrode post 101. A fastening cover 202 is movably sleeved on the outer wall of the contact cover 2. An outwardly extending retaining ring is fixed to the bottom edge of the contact cover 2. An assembly base 102 is fixed to the bottom of the electrode post 101. The inner wall of the fastening cover 202 is connected to the outside of the assembly base 102 by a thread. A gap is left between the retaining ring and the assembly base 102. A clamping assembly 3 is also installed on the lithium battery body 1.

[0025] An operating base plate is fixed to the bottom of the fastening cover 202. A heat sink 203 is fixed between the operating base plate and the outer wall of the fastening cover 202. The operating base plate is used for manual screwing, while the heat sink 203 can provide auxiliary heat dissipation.

[0026] A pressure bar 204 is fixed on the outer wall of the contact cover 2. The clamping assembly 3 includes a limiting post 301. A rotating block 302 is rotatably engaged on the limiting post 301. A clamping rod 303 is hinged to one side of the rotating block 302. An anti-loosening mechanism 4 is installed on the lithium battery body 1 between the electrode posts 101. The clamping rod 303 needs to be made of insulating material or have an insulating layer at the bottom of the clamping rod 303.

[0027] The bottom of the clamping rod 303 is provided with a snap-fit ​​notch for use with the pressure crossbar 204. One end of the clamping rod 303 extends obliquely downward, and a horizontal plate 304 is fixed to one end of the clamping rod 303. The horizontal plate 304 is provided with an arc-shaped notch, and the inner wall of the arc-shaped notch can fit against the outer wall of the pressing bolt 401.

[0028] The arc-shaped notch is provided with a lower groove, and an arc-shaped protrusion 305 is fixed in the lower groove. The anti-loosening mechanism 4 includes a lower pressure bolt 401, which is installed on the top of the lithium battery by means of threads. The lower pressure bolt 401 is provided with an upper anti-loosening ring 402 and a lower anti-loosening ring 403 on its outer sleeve. The lower anti-loosening ring 403 can be embedded in the lower groove.

[0029] An anti-loosening spring 404 is installed between the upper anti-loosening ring 402 and the lower anti-loosening ring 403. The bottom of the lower anti-loosening ring 403 is provided with a bottom groove for the matching arc-shaped protrusion 305 to be inserted. The top of the pressing bolt 401 is provided with a through channel. The lower part of the inner wall of the through channel is provided with a receiving notch. A limiting plate 405 is installed inside the through channel. The limiting plate 405 is provided with a side protrusion corresponding to the receiving notch. A support column 406 is fixed to the bottom of the limiting plate 405. A magnet 407 is fixed to the bottom of the support column 406. An iron plate seat is fixed to the top of the lithium battery body 1. The height of the receiving notch is greater than the height of the side protrusion, which can improve the fault tolerance rate of the pressing bolt 401 with different heights.

[0030] This structure allows for convenient installation and use, with simple assembly and easy operation. The clamping rod 303 presses the contact cover 2 onto the electrode post 101, and a fastening cover 202 is also provided below the contact cover 2 for double fixation. The clamping rod 303 is fixed and limited by the pressing bolt 401, which also features an anti-loosening design, making this connection structure more stable. In use, first use the fastening cover 202 to press the contact cover 2 onto the electrode post 101, then rotate the clamping rod 303 above the pressure crossbar 204, so that the horizontal plate 304 at one end of the clamping rod 303 is aligned with the horizontal plate 304. Interlock and install the upper and lower pressure bolts 401 so that the lower anti-loosening ring 403 presses on the horizontal plate 304. Then, continuously rotate the lower pressure bolt 401 to hold the clamping rod 303, so that the through channel on the lower pressure bolt 401 next to the electrode post 101 is at the same height or the closest horizontal height. Then, insert the limiting plate 405 into the lower pressure bolt 401, and then rotate the lower pressure bolt 401 so that the through channels on the two lower pressure bolts 401 are in a straight line. Then, insert the limiting plate 405 into the through channels on both sides at the same time, and then the magnet 407 is attracted to the top of the iron plate base.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lithium battery electrode connection structure against loosening, comprising a lithium battery body (1), an electrode post (101) is arranged on the lithium battery body (1), characterized in that: A contact cover (2) is installed on the top of the electrode post (101). A power transmission line (201) is provided on the top of the contact cover (2). The bottom end of the power transmission line (201) passes through the contact cover (2) and can contact the top of the electrode post (101). A fastening cover (202) is movably sleeved on the outer wall of the contact cover (2). An outwardly extending retaining ring is fixed on the bottom edge of the contact cover (2). An assembly base (102) is fixed on the bottom of the electrode post (101). The inner wall of the fastening cover (202) is connected to the outside of the assembly base (102) by a thread. A clamping assembly (3) is also installed on the lithium battery body (1).

2. The anti-loosening lithium battery electrode connection structure as described in claim 1, characterized in that: An operating base plate is fixed to the bottom of the fastening cover (202), and a heat sink (203) is fixed between the operating base plate and the outer wall of the fastening cover (202).

3. The anti-loosening lithium battery electrode connection structure as described in claim 1, characterized in that: A pressure bar (204) is fixed on the outer wall of the contact cover (2). The clamping assembly (3) includes a limiting post (301). A rotating block (302) is rotatably engaged on the limiting post (301). A clamping rod (303) is hinged to one side of the rotating block (302). An anti-loosening mechanism (4) is installed on the lithium battery body (1) between the electrode posts (101).

4. The anti-loosening lithium battery electrode connection structure as described in claim 3, characterized in that: The bottom of the clamping rod (303) is provided with a snap-fit ​​notch for use with the pressure-bearing crossbar (204). One end of the clamping rod (303) extends obliquely downward, and a horizontal plate (304) is fixed to one end of the clamping rod (303). The horizontal plate (304) is provided with an arc-shaped notch.

5. The anti-loosening lithium battery electrode connection structure as described in claim 4, characterized in that: The arc-shaped notch is provided with a lower groove, and an arc-shaped protrusion (305) is fixed inside the lower groove.

6. The anti-loosening lithium battery electrode connection structure as described in claim 5, characterized in that: The anti-loosening mechanism (4) includes a pressing bolt (401), which is installed on the top of the lithium battery by means of threads. The pressing bolt (401) is provided with an upper anti-loosening ring (402) and a lower anti-loosening ring (403) on its outer sleeve.

7. The anti-loosening lithium battery electrode connection structure as described in claim 6, characterized in that: An anti-loosening spring (404) is connected and installed between the upper anti-loosening ring (402) and the lower anti-loosening ring (403). The bottom of the lower anti-loosening ring (403) is provided with a bottom groove that engages with the arc-shaped protrusion (305).

8. The anti-loosening lithium battery electrode connection structure as described in claim 7, characterized in that: The top of the pressing bolt (401) has a through channel, the lower part of the inner wall of the through channel has a receiving notch, a limiting plate (405) passes through the through channel, the limiting plate (405) has a side protrusion corresponding to the receiving notch, a support column (406) is fixed at the bottom of the limiting plate (405), a magnet (407) is fixed at the bottom of the support column (406), and an iron plate seat is fixed at the top of the lithium battery body (1).

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