Polymer battery cell with reinforced structure

Abstract

The utility model relates to the technical field of polymer battery cell protection, in particular to a polymer battery cell with a reinforcing structure, which comprises a battery cell and a protective shell arranged on the outer side of the battery cell, the protective heat dissipation mechanism is used for protecting the battery cell and assisting the heat dissipation of the battery cell at the same time, and is arranged on the outer side of the protective shell; wherein the protective heat dissipation mechanism comprises a fixing groove formed in the top of the protective shell, a heat dissipation assembly is arranged on the outer side of the protective shell, and a protective assembly is further arranged on the surface of the protective shell; the battery cell is specifically a lithium polymer battery, when the battery cell is used, the outer side of the battery cell can be subjected to reinforced protection through the protective shell, the heat dissipation assembly can accelerate the heat dissipation speed of the battery cell in the working process while protecting the battery cell, the working temperature of the battery cell is effectively reduced, and the service life of the battery cell is prolonged. The protection assembly enhances the protection effect of the protection shell and reduces the collision damage of the protection shell.

Description

Technical Field

[0001] This utility model relates to the field of polymer battery cell protection technology, and in particular to a polymer battery cell with a reinforced structure. Background Technology

[0002] Polymer batteries, also known as lithium polymer batteries or high-molecular lithium batteries, are a type of lithium-ion battery. However, compared to liquid lithium batteries, they have many significant advantages, such as higher energy density, smaller size, thinner profile, lighter weight, and higher safety. They are a new type of battery. Polymer battery cells are usually pouch cells, which are directly wrapped in a soft outer shell such as aluminum. Their strength is relatively low, and they are easily bent and deformed, leading to leakage or direct damage to the cell.

[0003] As shown in the reference case "A polymer cell with a reinforced structure" announcement number "CN212182435U", the bottom and sides of the soft-pack cell are respectively provided with a bottom plate and a side plate. The bottom plate and the side plate together wrap around the edge of the cell body, which increases the strength at the edge of the cell body. When the battery is dropped, the bottom plate and the side plate can act as a shell, so that there is always a certain safe distance between the cell body and the ground, avoiding direct contact between the cell body and the ground, thereby improving the drop resistance of the cell body.

[0004] While existing reinforcement structures provide physical protection and structural strengthening for the outside of the battery cell, they typically achieve reinforcement by covering the outer surface of the battery cell. However, this often limits the heat dissipation capacity of the battery cell surface. Since the battery cell generates a lot of heat during operation, reduced heat dissipation efficiency can easily lead to an increase in battery cell temperature, thereby affecting its charge and discharge performance.

[0005] Therefore, a polymer battery cell with a reinforced structure is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a polymer battery cell with a reinforced structure to solve the above-mentioned problems. Although the existing reinforced structure achieves physical protection and structural strengthening of the battery cell, it usually achieves reinforcement by covering the outer surface of the battery cell, but often limits the heat dissipation capacity of the battery cell surface. Since the battery cell generates a lot of heat when it is working, the reduced heat dissipation efficiency can easily lead to an increase in the battery cell temperature, thereby affecting its charging and discharging performance.

[0007] This utility model achieves the above-mentioned objectives through the following technical solution: a polymer battery cell with a reinforced structure, comprising: a battery cell, wherein a protective shell is disposed on the outer side of the battery cell; a protective heat dissipation mechanism, wherein the protective heat dissipation mechanism is disposed on the outer side of the protective shell for assisting in heat dissipation of the battery cell while protecting it; wherein the protective heat dissipation mechanism includes a fixing groove formed on the top of the protective shell, a heat dissipation component is disposed on the outer side of the protective shell, and a protective component is also disposed on the surface of the protective shell, wherein the battery cell is specifically a lithium polymer battery, and the outer side of the battery cell can be reinforced by the protective shell during use, and the heat dissipation component can accelerate the heat dissipation of the battery cell during operation while protecting it, effectively reducing the operating temperature of the battery cell, and the protective component enhances the protective effect of the protective shell and reduces the impact damage to the protective shell.

[0008] Preferably, the heat dissipation assembly includes two first heat-conducting plates fixedly installed on both sides of the protective shell. The adjacent side of each of the two first heat-conducting plates extends into the fixing groove and contacts the battery cell. Multiple second heat-conducting plates are fixedly installed on the surface of each of the two first heat-conducting plates. Each of the multiple second heat-conducting plates has a first heat dissipation hole penetrating through the first heat-conducting plate. When the battery cell is in use, it can make extensive contact with the surface of the battery cell through the two first heat-conducting plates, and then further expand the heat dissipation area through the multiple second heat-conducting plates on the surface of the first heat-conducting plate, thereby enhancing the heat exchange capacity of the heat dissipation assembly and improving the overall heat dissipation efficiency. The first heat dissipation hole penetrates through the first heat-conducting plate, allowing air to circulate freely between the first and second heat-conducting plates, thereby enhancing the natural convection heat dissipation effect.

[0009] Preferably, two heat-conducting sheets are fixedly installed on one side of the second heat-conducting plate. The two heat-conducting sheets are respectively located on both sides of the corresponding first heat dissipation hole. The heat-conducting sheets are made of high thermal conductivity materials such as graphite copper composite material or aluminum alloy, which can form a wider heat-conducting coverage area on both sides of the first heat dissipation hole.

[0010] Preferably, a buffer strip is fixedly installed on the side of the heat-conducting sheet away from the second heat-conducting plate. The buffer strip is set in a semi-circular shape. When the battery cell is subjected to external impact, vibration or drop, the buffer strip can absorb part of the impact energy through its deformation.

[0011] Preferably, a buffer pad is fixedly installed between each of the multiple second heat-conducting plates. The surface of the buffer pad is set to be arc-shaped. When the battery cell is subjected to impact, drop or external pressure, the buffer pad will first contact the external impact source and play the role of the first layer of buffer protection.

[0012] Preferably, the protective component includes two second heat dissipation holes formed on the surface of the protective shell. Both second heat dissipation holes are connected to the fixing groove. Reinforcing ribs are fixedly installed inside the second heat dissipation holes. The second heat dissipation holes are directly connected to the fixing groove, which further increases the heat dissipation channel of the battery cell and enables the internal heat to be quickly diffused to the external environment. The addition of reinforcing ribs inside the second heat dissipation holes effectively improves the structural rigidity of the hole area.

[0013] Preferably, two silicone blocks are fixedly installed at the bottom of the protective shell, with the two silicone blocks located on both sides of the bottom of the protective shell respectively. When the battery cell falls or is subjected to a vertical impact, the deformation of the silicone blocks can absorb and disperse the impact force.

[0014] The beneficial effects of this utility model are:

[0015] 1. The battery cell is specifically a lithium polymer battery. When the battery cell is in use, the outer side of the battery cell can be reinforced with a protective shell. The heat dissipation component can protect the battery cell while accelerating the heat dissipation speed of the battery cell during operation, effectively reducing the operating temperature of the battery cell. The protective component enhances the protective effect of the protective shell and reduces the impact damage to the protective shell.

[0016] 2. When the battery cell is subjected to external impact, vibration or drop, the buffer strip can absorb part of the impact energy through its deformation. When the battery cell falls or is subjected to vertical impact, the silicone block can absorb and disperse the impact force through deformation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the protective heat dissipation mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat dissipation component structure of this utility model;

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

[0021] In the diagram: 1. Battery cell; 2. Protective shell; 3. Protective heat dissipation mechanism; 31. Fixing groove; 32. Heat dissipation component; 321. First heat conduction plate; 322. Second heat conduction plate; 323. First heat dissipation hole; 324. Heat conduction sheet; 325. Buffer strip; 326. Buffer pad; 33. Protective component; 331. Second heat dissipation hole; 332. Reinforcing rib; 333. Silicone block. 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 1-4 As shown, a polymer battery cell with a reinforced structure includes: a battery cell 1, with a protective shell 2 disposed on the outside of the battery cell 1; and a protective heat dissipation mechanism 3, which is disposed on the outside of the protective shell 2 to assist in heat dissipation of the battery cell 1 while protecting it. The protective heat dissipation mechanism 3 includes a fixing groove 31 opened on the top of the protective shell 2, a heat dissipation component 32 disposed on the outside of the protective shell 2, and a protective component 33 disposed on the surface of the protective shell 2. The battery cell 1 is specifically a lithium polymer battery. When the battery cell 1 is in use, the protective shell 2 can strengthen the protection of the outside of the battery cell 1. The heat dissipation component 32 can protect the battery cell 1 while accelerating the heat dissipation speed of the battery cell 1 during operation, effectively reducing the operating temperature of the battery cell 1. The protective component 33 enhances the protective effect of the protective shell 2 and reduces the impact damage to the protective shell 2.

[0024] The polymer cell 1 is mainly composed of a positive electrode, a negative electrode, an electrolyte, a separator, and an aluminum-plastic film soft package. It features high energy density, light weight, and customizable shape, and is widely used in electronic devices and energy storage systems. The protective shell 2 and the protective heat dissipation mechanism 3 are located on the outside of the cell 1 and do not interfere with the basic internal composition and electrochemical reaction of the cell 1. Therefore, they will not affect the charging and discharging characteristics, voltage stability, and energy output capability of the cell 1.

[0025] like Figure 2 and Figure 3As shown, the heat dissipation assembly 32 includes two first heat-conducting plates 321 fixedly installed on both sides of the protective shell 2. The adjacent sides of the two first heat-conducting plates 321 extend into the fixing groove 31 and contact the battery cell 1. Multiple second heat-conducting plates 322 are fixedly installed on the surfaces of both first heat-conducting plates 321. Each of the multiple second heat-conducting plates 322 has a first heat dissipation hole 323 penetrating the first heat-conducting plate 321. The battery cell 1 can be placed in the fixing groove 31 for fixed installation. When the battery cell 1 is in use, it can make extensive contact with the surface of the battery cell 1 through the two first heat-conducting plates 321, and then dissipate heat through the multiple second heat-conducting plates 322 on the surface of the first heat-conducting plates 321. To further expand the heat dissipation area, enhance the heat exchange capacity of the heat dissipation component 32, and improve the overall heat dissipation efficiency, the first heat dissipation hole 323 penetrates the first heat conduction plate 321, allowing air to circulate freely between the first heat conduction plate 321 and the second heat conduction plate 322, enhancing the natural convection heat dissipation effect and further reducing the temperature rise of the battery cell 1 during operation. Two heat conduction plates 324 are fixedly installed on one side of the second heat conduction plate 322. The two heat conduction plates 324 are located on both sides of the corresponding first heat dissipation hole 323. The heat conduction plates 324 are made of high thermal conductivity materials such as graphite copper composite material or aluminum alloy, which can form a wider heat conduction coverage area on both sides of the first heat dissipation hole 323.

[0026] A buffer strip 325 is fixedly installed on the side of the heat-conducting plate 324 away from the second heat-conducting plate 322. The buffer strip 325 is set in a semi-circular shape and is made of elastic material such as rubber or foamed polyurethane. Its semi-circular shape has good energy absorption and dispersion capabilities. When the battery cell 1 is subjected to external impact, vibration or drop, the buffer strip 325 can absorb part of the impact energy through its deformation, significantly reducing the impact force transmitted to the heat-conducting plate 324 and the battery cell 1. Buffer pads 326 are fixedly installed between multiple second heat-conducting plates 322. The surface of the buffer pads 326 is set in an arc shape. As a relatively prominent buffer element in the whole structure, the buffer pads 326 are higher than the heat-conducting plate 324 and the buffer strip 325. When the battery cell 1 is subjected to impact, drop or external pressure, the buffer pads 326 will preferentially contact the external impact source and play the role of the first layer of buffer protection.

[0027] like Figure 2 and Figure 4As shown, the protective component 33 includes two second heat dissipation holes 331 opened on the surface of the protective shell 2. Both second heat dissipation holes 331 are connected to the fixing groove 31. A reinforcing rib 332 is fixedly installed inside the second heat dissipation hole 331. The second heat dissipation hole 331 is directly connected to the fixing groove 31, further increasing the heat dissipation channel of the battery cell 1, which can realize the rapid diffusion of internal heat to the external environment. The addition of a reinforcing rib 332 inside the second heat dissipation hole 331 effectively improves the structural rigidity of the hole area and prevents stress concentration or local weakness caused by the opening. Two silicone blocks 333 are fixedly installed on the bottom of the protective shell 2. The two silicone blocks 333 are located on both sides of the bottom of the protective shell 2. The silicone blocks 333 are made of high elastic silicone material and have excellent buffering and shock absorption performance. When the battery cell 1 is dropped or subjected to vertical impact, the deformation of the silicone blocks 333 can absorb and disperse the impact force.

[0028] Explain the basic components of the equipment, how to use them, and then explain the beneficial effects of improved components on the equipment.

[0029] In use, this invention allows for extensive contact between the two first heat-conducting plates 321 and the surface of the battery cell 1. Multiple second heat-conducting plates 322 on the surface of the first heat-conducting plates 321 further expand the heat dissipation area, enhancing the heat exchange capacity of the heat dissipation assembly 32 and improving overall heat dissipation efficiency. The first heat dissipation hole 323 penetrates the first heat-conducting plate 321, allowing free airflow between the first and second heat-conducting plates 321 and 322, reducing the temperature rise of the battery cell 1 during operation. The heat-conducting sheet 324 forms a wider heat-conducting coverage area on both sides of the first heat dissipation hole 323. The buffer strip 325 absorbs some of the impact energy through its deformation, significantly reducing... The impact force transmitted to the heat-conducting sheet 324 and the battery cell 1 is reduced. The buffer pad 326, as a relatively prominent buffer element in the entire structure, is higher than the heat-conducting sheet 324 and the buffer strip 325. When the battery cell 1 is subjected to impact, drop or external pressure, the buffer pad 326 will preferentially contact the external impact source and play the role of the first layer of buffer protection. The second heat dissipation hole 331 further increases the heat dissipation channel of the battery cell 1. The interior of the second heat dissipation hole 331 is equipped with a reinforcing rib 332, which effectively improves the structural rigidity of the hole area and prevents stress concentration or local weakness caused by the opening. When the battery cell 1 is dropped or subjected to vertical impact, the impact force can be absorbed and dispersed by the deformation of the silicone block 333.

[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 electric core having a reinforcing structure, characterized by, Include: The electric core (1), the outer side of the electric core (1) is provided with a protective shell (2); The protective heat dissipation mechanism (3) is used for assisting the heat dissipation of the electric core while protecting the electric core (1), and the protective heat dissipation mechanism (3) is arranged on the outer side of the protective shell (2); Wherein, the protective heat dissipation mechanism (3) includes a fixed groove (31) opened at the top of the protective shell (2), the outer side of the protective shell (2) is provided with a heat dissipation assembly (32), and the surface of the protective shell (2) is further provided with a protection assembly (33).

2. The polymer battery cell with reinforced structure according to claim 1, wherein: The heat dissipation assembly (32) includes two first heat conducting plates (321) fixedly installed on both sides of the protective shell (2), the adjacent side of the two first heat conducting plates (321) extends to the inside of the fixed groove (31) and contacts with the electric core (1), the surface of the two first heat conducting plates (321) is fixedly installed with a plurality of second heat conducting plates (322), and the surface of the plurality of second heat conducting plates (322) is provided with a first heat dissipation hole (323) penetrating through the first heat conducting plate (321).

3. The polymer battery cell with reinforced structure of claim 2, wherein: One side of the second heat conducting plate (322) is fixedly installed with two heat conducting sheets (324), and the two heat conducting sheets (324) are respectively located on the two sides of the corresponding first heat dissipation hole (323).

4. The polymer battery cell with reinforced structure of claim 3, wherein: The side of the heat conducting sheet (324) away from the second heat conducting plate (322) is fixedly installed with a buffer strip (325), and the buffer strip (325) is arranged in a semicircular shape.

5. The polymer battery cell with reinforced structure of claim 4, wherein: The buffer pad (326) is fixedly installed between the plurality of second heat conducting plates (322), and the surface of the buffer pad (326) is arranged in a circular arc shape.

6. The polymer battery cell with reinforced structure of claim 1, wherein: The protection assembly (33) includes two second heat dissipation holes (331) opened on the surface of the protective shell (2), the two second heat dissipation holes (331) are communicated with the fixed groove (31), and the second heat dissipation hole (331) is fixedly installed with a reinforcing rib (332) in the inside.

7. The polymer battery cell with reinforced structure of claim 1, wherein: The bottom of the protective shell (2) is fixedly installed with two silica gel blocks (333), and the two silica gel blocks (333) are respectively located on both sides of the bottom of the protective shell (2).

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