Polymer cell structure with pins easy to connect

Abstract

The utility model relates to the field of battery cells, in particular to a polymer cell structure with pins easy to connect, which comprises a cell shell, a top shell is mounted at the upper end of the cell shell, and one end of the top shell is provided with an end notch; the connecting mechanism is installed on the inner wall of the end notch, and the surface of the connecting mechanism extends to the position above the top shell; wherein the connecting mechanism comprises a connecting assembly installed on the inner wall of the end notch, a guide assembly is arranged on the inner side of the connecting assembly, and the guide assembly is connected to the inner wall of the connecting assembly in a sliding mode; the two elastic pieces are arranged in the side grooves, the effect of quick connection is achieved in the connecting process, meanwhile, the two elastic pieces are distributed in a staggered mode through the side grooves, the connecting pins are inserted between the two adjacent elastic pieces, the two elastic pieces can be tightly attached to the surfaces of the connecting pins under the action of elastic potential energy, connection tightness is kept, and the using effect is guaranteed after welding.

Description

Technical Field

[0001] This utility model relates to the field of battery cells, and in particular to a polymer cell structure with easily connected pins. Background Technology

[0002] Polymer cells are also a component of lithium-ion batteries. The composition of a lithium-ion rechargeable battery is as follows: cell + protection circuit board. The rechargeable battery without the protection circuit board is the cell, which is the energy storage part of the rechargeable battery. The quality of the cell directly determines the quality of the rechargeable battery. The cell structure usually includes a core and leads. The core leads lead out to the tabs. Currently, the welding of the leads and tabs is done by first cutting the tabs and then performing ultrasonic welding.

[0003] A search of existing technology revealed a device called "A Pin and Battery Cell Structure" (publication number CN219873933U). This device causes the outer guide plate to move inward and compress the spring, while the conductive plate moves inward and separates from the conductive sleeve. Then, the polymer battery cell is placed inside the mounting base. However, during the assembly and installation process, this device is prone to loosening during the connection process, which affects the performance after soldering.

[0004] Therefore, a polymer cell structure with easily connected pins is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a polymer battery cell structure with easily connected pins to solve the above-mentioned problems, thereby improving the problem that loosening can easily occur during assembly and installation, and that welding can affect the performance of the battery.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a polymer battery cell structure with easily connectable pins, comprising: a battery cell housing, a top shell mounted on the upper end of the battery cell housing, and an end slot formed at one end of the top shell; a connecting mechanism, the connecting mechanism being mounted on the inner wall of the end slot, and the surface of the connecting mechanism extending above the top shell; wherein, the connecting mechanism includes a connecting component mounted on the inner wall of the end slot, a guide component being provided on the inner side of the connecting component, the guide component being slidably connected to the inner wall of the connecting component, and the surface of the guide component extending above the top shell.

[0007] Preferably, the connecting assembly includes a fixed inner shell fixedly connected to the inner wall of the end slot, a guide plate fixedly connected to the bottom wall of the fixed inner shell, a welding end fixedly connected to the upper end of the fixed inner shell, the lower end of the welding end penetrating the fixed inner shell and extending into the interior of the top shell, and a connecting frame fixedly connected to the upper end of the welding end. The battery cell mainly contains positive and negative electrodes, electrolyte, and tabs, which are connected to the internal tabs of the battery cell via the welding end when connection is required.

[0008] Preferably, the guide assembly includes a connecting end slidably connected to the inner wall of the connecting assembly, guide strips fixedly connected to both sides of the connecting end, a connecting conductor fixedly connected to the inner top wall of the connecting end, and a connecting pin fixedly connected to one side of the connecting conductor. The connecting pin may be shaped like a shuttle.

[0009] Preferably, a connecting plate is fixedly connected to the inner wall of the connecting frame, and an abutment spring is fixedly connected to the upper end of the connecting plate. The abutment spring will push the connecting pin against the surface between the two elastic plates, maintaining a tight connection.

[0010] Preferably, an elastic sheet is fixedly connected to the end of the connecting frame away from the connecting plate, and a side groove is formed on one side of the elastic sheet. The side groove allows the two elastic sheets to form an interlacing effect, enhancing the mutual contact between the elastic sheets.

[0011] Preferably, the elastic sheets on both sides are wavy, the surface of the elastic sheets penetrates the adjacent side grooves, and the elastic sheets on both sides are staggered.

[0012] Preferably, two side strips are fixedly connected to one side of the inner wall of the fixed inner shell, and the two side strips, together with the inner wall of the fixed inner shell, form a guide groove. The guide groove, in conjunction with the guide strips, provides a guiding function.

[0013] The beneficial effects of this utility model are:

[0014] 1. The polymer cell structure with easily connected pins enables rapid connection during the connection process with the help of the connecting components. At the same time, the side grooves allow the two elastic plates to be staggered. When the connecting pins are inserted between two adjacent elastic plates, the elastic plates will form a tight fit with the surface of the connecting pins under the action of elastic potential energy, maintaining the tightness of the connection and ensuring good performance after soldering.

[0015] 2. By setting a guide component, the connecting component can be guided during the connection operation. The device inserts the connecting end into the fixed inner shell, and the guide strip slides along the guide groove. The guide groove and the guide strip work together to form a guiding effect. The connecting pin is set in a spindle shape, which makes it easy for the connecting pin to enter between the two elastic plates and ensures the use effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection mechanism structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the connecting component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the elastic sheet structure of this utility model;

[0020] Figure 5 This is an exploded sectional view of the guide component of this utility model.

[0021] In the diagram: 1. Battery cell outer shell; 2. Top shell; 21. End slot; 3. Connecting mechanism; 31. Connecting assembly; 311. Fixed inner shell; 312. Guide plate; 313. Connecting frame; 314. Welding end; 315. Elastic sheet; 316. Connecting plate; 317. Abutment spring; 318. Side slot; 319. Edge strip; 3191. Guide slot; 32. Guide assembly; 321. Connecting end; 322. Connecting pin; 323. Connecting conductor; 324. Guide strip. Detailed Implementation

[0022] 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.

[0023] In practical implementation: such as Figure 1-4As shown, a polymer battery cell structure with easily connectable pins includes: a battery cell housing 1, a top shell 2 mounted on the upper end of the battery cell housing 1, and an end slot 21 formed at one end of the top shell 2; a connecting mechanism 3, which is mounted on the inner wall of the end slot 21, and the surface of the connecting mechanism 3 extends above the top shell 2; wherein, the connecting mechanism 3 includes a connecting component 31 mounted on the inner wall of the end slot 21, a guide component 32 disposed on the inner side of the connecting component 31, the guide component 32 being slidably connected to the inner wall of the connecting component 31, and the surface of the guide component 32 extending above the top shell 2;

[0024] like Figures 1-4 As shown, the connecting assembly 31 includes a fixed inner shell 311 fixedly connected to the inner wall of the end slot 21. A guide plate 312 is fixedly connected to the inner bottom wall of the fixed inner shell 311. A welding end 314 is fixedly connected to the upper end of the fixed inner shell 311. The lower end of the welding end 314 passes through the fixed inner shell 311 and extends into the interior of the top shell 2. A connecting frame 313 is fixedly connected to the upper end of the welding end 314. A connecting plate 316 is fixedly connected to the inner wall of the connecting frame 313. An abutment spring 317 is fixedly connected to the upper end of the connecting plate 316.

[0025] An elastic sheet 315 is fixedly connected to the end of the connecting frame 313 away from the connecting plate 316. A side groove 318 is provided on one side of the elastic sheet 315. Both sides of the elastic sheet 315 are wavy. The surface of the elastic sheet 315 penetrates the adjacent side groove 318. The elastic sheets 315 on both sides are staggered. Two side strips 319 are fixedly connected to one side of the inner wall of the fixed inner shell 311. The two side strips 319 and the inner wall of the fixed inner shell 311 combine to form a guide groove 3191.

[0026] During use, the device can be connected to the internal tabs of the battery cell via the welding end 314. When connection is required, the connection pin 322 inside the guide assembly 32 can be inserted between two adjacent elastic plates 315. At this time, under the action of the elastic potential energy, the two elastic plates 315 form a tight fit with the surface of the connection pin 322, thereby maintaining a good connection. This method of connection can improve the convenience of connection.

[0027] Furthermore, when the connecting pin 322 is inserted between adjacent elastic pieces 315 and contacts the contacting spring 317, the contacting spring 317 will push the connecting pin 322 against the surface between the two elastic pieces 315, maintaining a tight connection effect. The side groove 318 can make the two elastic pieces 315 form an interlaced effect, improving the mutual contact of the elastic pieces 315.

[0028] like Figure 1 , Figure 2 and Figure 4As shown, the guide assembly 32 includes a connecting end 321 slidably connected to the inner wall of the connecting assembly 31. Guide strips 324 are fixedly connected to both sides of the connecting end 321. A connecting conductor 323 is fixedly connected to the inner top wall of the connecting end 321. A connecting pin 322 is fixedly connected to one side of the connecting conductor 323. When the device is in use, the connecting end 321 can be inserted into the interior of the fixed inner shell 311. The guide strips 324 can slide along the guide groove 3191. The guide groove 3191 and the guide strips 324 can form a guiding function. The connecting pin 322 in the connecting end 321 can be set in a spindle shape to facilitate the insertion of the connecting pin 322 between the two elastic pieces 315, thereby improving the convenience of insertion and connection.

[0029] In use, the connecting end 321 is inserted into the interior of the fixed inner shell 311. The guide strip 324 slides along the guide groove 3191. The guide groove 3191, together with the guide strip 324, forms a guiding function. The connecting pin 322 is shaped like a shuttle, which facilitates the connecting pin 322 entering between the two elastic pieces 315. The connecting pin 322 is inserted between adjacent elastic pieces 315 and contacts the contact spring 317. The contact spring 317 will push the connecting pin 322 against the surface between the two elastic pieces 315. The side groove 318 forms an interlaced effect between the two elastic pieces 315, which improves the mutual contact of the elastic pieces 315. It is connected to the internal tab of the battery cell through the welding end 314. When connection is required, the connecting pin 322 on the inside of the guide assembly 32 is inserted between two adjacent elastic pieces 315. Under the action of elastic potential energy, the two elastic pieces 315 form a tight fit with the surface of the connecting pin 322.

[0030] 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 polymer cell structure with easily connectable pins, characterized in that, include: The battery cell housing (1) has a top shell (2) installed at the upper end of the battery cell housing (1), and an end slot (21) is provided at one end of the top shell (2); A connecting mechanism (3) is installed on the inner wall of the end slot (21), and the surface of the connecting mechanism (3) extends to the top of the top shell (2); The connecting mechanism (3) includes a connecting component (31) installed on the inner wall of the end slot (21). A guide component (32) is provided on the inner side of the connecting component (31). The guide component (32) is slidably connected to the inner wall of the connecting component (31). The surface of the guide component (32) extends to the top of the top shell (2).

2. The polymer cell structure with easily connected pins according to claim 1, characterized in that: The connecting assembly (31) includes a fixed inner shell (311) fixedly connected to the inner wall of the end slot (21). A guide plate (312) is fixedly connected to the inner bottom wall of the fixed inner shell (311). A welding end (314) is fixedly connected to the upper end of the fixed inner shell (311). The lower end of the welding end (314) penetrates the fixed inner shell (311) and extends into the interior of the top shell (2). A connecting frame (313) is fixedly connected to the upper end of the welding end (314).

3. The polymer cell structure with easily connected pins according to claim 1, characterized in that: The guide component (32) includes a connecting end (321) slidably connected to the inner wall of the connecting component (31), guide strips (324) are fixedly connected to both sides of the connecting end (321), a connecting conductor (323) is fixedly connected to the inner top wall of the connecting end (321), and a connecting pin (322) is fixedly connected to one side of the connecting conductor (323).

4. The polymer cell structure with easily connected pins according to claim 2, characterized in that: A connecting plate (316) is fixedly connected to the inner wall of the connecting frame (313), and an abutment spring (317) is fixedly connected to the upper end of the connecting plate (316).

5. The polymer cell structure with easily connected pins according to claim 4, characterized in that: An elastic piece (315) is fixedly connected to the end of the connecting frame (313) away from the connecting plate (316), and a side groove (318) is provided on one side of the elastic piece (315).

6. The polymer cell structure with easily connected pins according to claim 5, characterized in that: Both elastic sheets (315) on both sides are wavy, and the surface of the elastic sheet (315) penetrates the adjacent side groove (318). The elastic sheets (315) on both sides are staggered.

7. The polymer cell structure with easily connected pins according to claim 2, characterized in that: Two side strips (319) are fixedly connected to one side of the inner wall of the fixed inner shell (311), and the two side strips (319) together with the inner wall of the fixed inner shell (311) form a guide groove (3191).

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