Long-circulation soft package battery

Abstract

The utility model relates to the technical field of soft package batteries, in particular to a long-circulation soft package battery which comprises a battery cell main body, the shell is arranged on the outer side of the battery cell main body, and the shell is composed of an upper shell and a lower shell; the battery body is protected through the outer shell, the anti-pressure capability of the battery body is enhanced, then the battery body is further reinforced through the inner shell, when the device is impacted, preliminary buffering is performed through the outer shell, and then the outer impact force is further relieved through the inner shell made of a flexible material, so that the impact force borne by the battery cell main body is relieved; the stability of the battery cell main body is improved, the experimental service life of the battery cell is prolonged, and the safety of the battery cell main body during use is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soft-pack batteries, in particular to a long-cycle soft-pack battery. Background Art

[0002] Lithium-ion batteries have become an ideal power source for portable electronic products due to their advantages such as high specific energy, low self-discharge, light weight and environmental friendliness. In recent years, soft-packaged lithium-ion batteries have been widely used in various consumer electronic products due to their advantages such as light weight, high energy density, low internal resistance, high cycle life and flexible design.

[0003] However, compared with steel-shell batteries, the outer packaging strength of soft-pack batteries is poor. In mechanical tests such as drops and micro-drops, the outer packaging is prone to damage, tearing, leakage, or ear tearing, which may cause safety accidents such as battery fire or explosion.

[0004] Secondly, when using soft-pack batteries, multiple batteries need to be combined to form a module. The soft-pack batteries contact each other when connected, which makes it difficult for the heat of the soft-pack batteries to dissipate, and thus accumulate inside the device. Once the temperature is too high, the batteries are prone to bulging, etc., posing certain safety hazards. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a long-cycle soft-pack battery, which solves the problems of insufficient pressure resistance and insufficient heat dissipation of the soft-pack battery.

[0006] In order to achieve the purpose of enhancing the pressure resistance and heat dissipation effect of the above-mentioned soft-pack battery, the utility model provides the following technical solutions: a long-cycle soft-pack battery, comprising:

[0007] Battery cell body;

[0008] A shell, which is arranged outside the battery body, and the shell consists of an upper shell and a lower shell;

[0009] The positive electrode sheet and the negative electrode sheet are fixedly installed on both sides of the battery body, exhaust holes are opened on both sides of the shell, and heat dissipation holes are provided at the upper and lower ends of the shell;

[0010] The battery cell body is surrounded and protected by the outer shell, and the outer shell separates the battery cell bodies to prevent them from being closely connected, which is more conducive to heat dissipation.

[0011] Optionally, both the upper shell and the lower shell are provided with through grooves on the outside, and fan blades are movably installed at equal distances inside the through grooves, and rotating shafts are provided through both ends of the fan blades, and the rotating shafts and the fan blades are movably connected, and the fan blades are in a diamond shape;

[0012] When in use, the outer shell is spliced ​​by the upper shell and the lower shell, and the battery body is further cooled by the through groove, which further improves the stability of the battery body.

[0013] Optionally, both ends of the rotating shaft are embedded in the inner wall of the through slot, and the rotating shaft and the through slot are detachably connected;

[0014] The detachable connection method makes installation more convenient for workers.

[0015] Optionally, through holes are provided at both ends of the shell, and the positive electrode sheet and the negative electrode sheet can pass through the through holes, and the upper shell and the lower shell are arranged in an axisymmetric manner;

[0016] The through holes of the shell effectively limit and fix the positive electrode sheet and the negative electrode sheet to prevent loosening during connection and affect the stability of the device.

[0017] Optionally, a slider is fixedly mounted on the inner side of the upper shell, and a slide groove is provided on the inner side of the lower shell, and the slide groove corresponds to the position of the slider, the slider can be embedded in the slide groove, and the slider and the slide groove are detachably connected;

[0018] The outer shell is connected to the lower shell by embedding the slider into the inside of the slide groove, so that the outer shell is assembled, and the outer shell is used to protect the battery body.

[0019] Optionally, an inner shell is embedded in the outer shell, and the diameter of the inner shell is smaller than the diameter of the outer shell, and the inner shell is made of a flexible material;

[0020] The inner shell made of flexible material can alleviate the impact force when the battery body is hit, making the battery body more stable during use, thereby further improving the stability of the device.

[0021] Optionally, springs are fixedly installed at equal distances on the outside of the inner shell, and a limit rod is fixedly installed inside the spring, the outside of the spring is fixed to the inner wall of the outer shell, and the inner shell is in the shape of a grid plate;

[0022] When the outer shell is impacted, the spring and the inner shell cooperate with each other to further alleviate the external impact force, making the battery body more stable during use.

[0023] Compared with the prior art, the utility model provides a long-cycle soft-pack battery with the following beneficial effects:

[0024] The utility model protects the battery body through the outer shell, enhances the pressure resistance of the battery body, and further strengthens the battery body through the inner shell. When the device is hit, the outer shell is used for preliminary buffering, and the inner shell made of flexible material is used to further alleviate the external impact force, alleviate the impact force on the battery body, improve the stability of the battery body, extend the experimental life of the battery, and thus effectively improve the safety of the battery body when in use;

[0025] The heat inside the shell is dissipated through the heat dissipation holes and exhaust holes to prevent heat accumulation inside the shell and affect the use of the battery body. The inner shell evacuates the heat through the grid, allowing the heat to enter the cavity of the shell and further dissipate the heat through the through grooves. While dissipating heat, the fan blades sense the hot air and rotate, and the heat dissipation and the shaft cooperate with each other to dissipate heat, effectively improving the heat dissipation efficiency, further alleviating the heat crisis, and effectively preventing heat accumulation, making the device more stable and safe when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall split structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the shell structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the fan blade structure of the utility model;

[0030] Figure 5 For the utility model Figure 2 A is an enlarged schematic diagram of the connection structure;

[0031] Figure 6 For the utility model Figure 2 A schematic diagram of the enlarged connection structure at B;

[0032] Figure 7 It is a schematic diagram of the spring position structure of the utility model;

[0033] In the figure: 1. battery cell body; 101. positive electrode sheet; 102. negative electrode sheet; 2. outer shell; 201. upper shell; 202. lower shell; 203. exhaust hole; 204. heat dissipation hole; 205. through hole; 206. fan blade; 207. rotating shaft; 208. through hole; 3. slider; 301. slide groove; 4. inner shell; 401. spring. Implementation

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example: See Figures 1 to 7The embodiment of the utility model provides a technical solution: a long-cycle soft-pack battery, comprising: a battery cell main body 1; a shell 2, which is arranged on the outside of the battery cell main body 1, and the shell 2 is composed of an upper shell 201 and a lower shell 202; positive electrode sheets 101 and negative electrode sheets 102 are fixedly installed on both sides of the battery cell main body 1, exhaust holes 203 are opened on both sides of the shell 2, and heat dissipation holes 204 are provided at the upper and lower ends of the shell 2. When the device is used, the battery cell main body 1 is surrounded and protected by the shell 2. When the battery cell main body 1 is stacked and used, the positive electrode sheet 101 and the negative electrode sheet 102 are connected to each other for use. The shell 2 separates the battery cell main bodies 1 to prevent them from being closely connected, which is more conducive to heat dissipation. At the same time, the heat dissipated by the battery cell main body 1 when in use is dissipated through the heat dissipation holes 204 and the exhaust holes 203 of the shell 2, effectively preventing the battery cell main body 1 from being overheated when in use, thereby effectively improving the stability of the battery cell main body 1 when in use.

[0036] Based on the above embodiments, in this embodiment, Figure 2 , Figure 4 As shown, through grooves 205 are provided on the outer sides of the upper shell 201 and the lower shell 202, and fan blades 206 are movably installed at equal distances inside the through grooves 205, and rotating shafts 207 are provided at both ends of the fan blades 206. The rotating shaft 207 and the fan blades 206 are movably connected, and the fan blades 206 are in a diamond shape. When in use, the outer shell 2 is spliced ​​with the upper shell 201 and the lower shell 202, and the battery body 1 further dissipates heat through the through grooves 205. The fan blades 206 rotate through the rotating shaft 207. The fan blades 206 take out the heat while rotating, thereby dissipating the heat generated by the battery body 1, and further improving the stability of the battery body 1.

[0037] Based on the above embodiment, in this embodiment, Figure 3 , Figure 4 As shown, both ends of the rotating shaft 207 are embedded in the inner wall of the through slot 205, and the rotating shaft 207 and the through slot 205 are detachably connected. The detachable connection makes installation more convenient for the workers, and the fan blades 206 are more flexible when rotating.

[0038] Based on the above embodiments, in this embodiment, Figure 1 , Figure 5 As shown, through holes 208 are opened at both ends of the shell 2, and the positive electrode sheet 101 and the negative electrode sheet 102 can pass through the through holes 208. The upper shell 201 and the lower shell 202 are axially symmetrically arranged. The through holes 208 of the shell 2 effectively limit and fix the positive electrode sheet 101 and the negative electrode sheet 102 to prevent loosening during connection and affecting the stability of the device. The shell 2 with an axially symmetrical arrangement is more convenient and flexible during installation and use, and effectively improves the installation efficiency of the staff.

[0039] Based on the above embodiments, in this embodiment, Figure 2 , Figure 5 , Figure 6 As shown, a slider 3 is fixedly installed on the inner side of the upper shell 201, and a slide groove 301 is opened on the inner side of the lower shell 202, and the slide groove 301 corresponds to the position of the slider 3, the slider 3 can be embedded in the slide groove 301, and the slider 3 and the slide groove 301 are detachably connected, the upper shell 201 is connected to the lower shell 202 by embedding the slider 3 in the slide groove 301, so as to assemble the shell 2, and the shell 2 is used to protect the battery body 1. When the battery body 1 falls, the shell 2 is used to protect the battery body 1, and the impact of external forces on the battery body 1 is effectively alleviated. The sliding connection method is more flexible and convenient when connecting, and the axial symmetrical setting is not divided into upper and lower, which is more convenient when installing.

[0040] Based on the above embodiments, in this embodiment, Figure 1 The outer shell 2 shown has an inner shell 4 embedded inside, and the diameter of the inner shell 4 is smaller than that of the outer shell 2. The inner shell 4 is made of a flexible material. When the outer shell 2 is subjected to external forces such as impact, the outer shell 2 provides preliminary protection for the battery cell body 2, and the inner shell 4 further alleviates the external impact force. The inner shell 2 made of a flexible material can alleviate the impact force when the battery cell body 1 is hit, making the battery cell body 1 more stable during use, thereby further improving the stability of the device.

[0041] Based on the above embodiments, in this embodiment, Figure 2 , Figure 7 As shown, springs 401 are fixedly installed at equal distances on the outside of the inner shell 4, and a limit rod is fixedly installed inside the spring 401. The outside of the spring 401 is fixed to the inner wall of the outer shell 2. The inner shell 4 is in the shape of a grid plate. The heat generated by the battery body 1 during use is dissipated through the grid of the inner shell 4, making it more convenient and effective to dissipate the heat of the battery body 1, thereby improving the stability of the battery body 1. When the outer shell 2 is impacted, the spring 401 and the inner shell 4 cooperate with each other to further alleviate the external impact force, making the battery body 1 more stable during use, and at the same time effectively improving the safety of the battery body 1 and reducing safety hazards.

Claims

1. A long cycle soft pack battery, characterized in that: include: Battery cell body; A shell, which is arranged outside the battery body, and the shell consists of an upper shell and a lower shell; A positive electrode sheet and a negative electrode sheet are fixedly mounted on both sides of the battery body, respectively; exhaust holes are provided on both sides of the shell, and heat dissipation holes are provided at both upper and lower ends of the shell.

2. A long cycle soft pack battery according to claim 1, characterized in that: Through slots are provided on the outer sides of the upper shell and the lower shell, and fan blades are movably installed at equal distances inside the through slots. Rotating shafts are provided through both ends of the fan blades, and the rotating shafts and the fan blades are movably connected. The fan blades are in a diamond shape.

3. A long cycle soft pack battery according to claim 2, characterized in that: The two ends of the rotating shaft are embedded in the inner wall of the through slot, and the rotating shaft and the through slot are detachably connected.

4. A long cycle soft pack battery according to claim 1, characterized in that: Through holes are provided at both ends of the shell, and the positive electrode sheet and the negative electrode sheet can pass through the through holes. The upper shell and the lower shell are arranged in an axisymmetric manner.

5. The long cycle soft pack battery according to claim 1, characterized in that: A slider is fixedly mounted on the inner side of the upper shell, and a slide groove is provided on the inner side of the lower shell, and the slide groove corresponds to the position of the slider. The slider can be embedded in the slide groove, and the slider and the slide groove are detachably connected.

6. A long cycle soft pack battery according to claim 1, characterized in that: An inner shell is embedded in the outer shell, and the diameter of the inner shell is smaller than the diameter of the outer shell. The inner shell is made of flexible material.

7. A long cycle soft pack battery according to claim 6, characterized in that: Springs are fixedly installed at equal distances on the outside of the inner shell, and a limiting rod is fixedly installed inside the spring. The outside of the spring is fixed to the inner wall of the outer shell, and the inner shell is in the shape of a grid plate.

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