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Flexible stretchable battery pack

A kind of battery pack and flexible technology, applied in battery pack components, small-sized batteries/battery packs, large-sized batteries/battery packs, etc., which can solve problems such as low safety, limited bending times, and inability to stretch and twist. , to achieve the effect of improving safety, wide application field and good safety

Pending Publication Date: 2021-12-14
嘉兴极展科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current flexible battery uses an ultra-thin flexible battery cell, which can be bent and has a certain degree of flexibility. It has the following defects: the number of bending times is limited, and the battery life will be lost if the number of bending times is too high, and the capacity will be reduced at the same time, about 1mAh ~100mAh; moreover, the existing ultra-thin flexible batteries can only be bent, not stretched or twisted
In addition, in order to achieve flexibility and bending, the existing flexible battery products generally have no protective shell, lack of external protection for the flexible battery, the safety is too low, and safety problems such as puncture and rupture are prone to occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see Figure 1a , Figure 1b and figure 2 , the flexible and stretchable battery pack according to the embodiment of the present invention includes an internal cell module 100 and a stretchable packaging shell 200 wrapped outside the internal cell module 100 . In this example, see Figure 1a , Figure 1b , the internal cell module 100 includes a first cell 101, a filling module 102, a PCB 103 and a second cell 104 placed in sequence, and the first cell 101 and the second cell 104 are connected in parallel to the PCB 103 , each battery cell and the PCB board are connected by a wire, and the outside of each battery cell, PCB board, and wire is wrapped with an injection layer; the internal battery module 100 is wrapped in a stretchable packaging shell 200, When the stretchable packaging shell 200 is deformed under the action of pressure or tension, each battery cell of the internal cell module 100 and the PCB board maintain an electrical connection relationship within th...

Embodiment 2

[0060] see Figure 4 , in this embodiment, the internal cell module 100 is a symmetrical structure, which includes a third cell 111, a first PCB board 112, a second PCB board 113, and a fourth cell 114 placed in sequence, and the third cell 111 It is electrically connected to the first PCB board 112, the second PCB board 113 is electrically connected to the fourth electric core 114, the first PCB board 112 and the second PCB board 113 are electrically connected to each other, the first PCB board 112 with the glue injection layer and the The shape and size of the second PCB board 113 of the glue injection layer are basically the same (the size of the first PCB board 112 and the second PCB board 113 in the glue injection layer can be the same or different, and it can be determined by the thickness of the glue injection layer. Appropriately adjusted), so that the internal cell module 100 forms a left-right symmetrical structure centered on the middle.

[0061] See Figure 5-Fig...

Embodiment 3

[0069] In this embodiment, different from Embodiment 1 and Embodiment 2, the internal cell module also includes two electrical connectors (the number of which can be set according to actual needs) electrically connected to each cell and the PCB board. see Figure 16 , the internal cell module 100 includes a fifth cell 131, a third PCB board 132, a fourth PCB board 133, a sixth cell 134, a first electrical connector 135, and a second electrical connector 136 placed in sequence. The five electric cores 131 are electrically connected to the third PCB board 132, the fourth PCB board 133 is electrically connected to the sixth electric core 134, the third PCB board 132 and the fourth PCB board 133 are electrically connected to each other, and the first electrical connector 135 is connected to the sixth electric core 134. The three PCB boards 132 are electrically connected, and the second electrical connector 136 is electrically connected to the fourth PCB board 133 . The shape of t...

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Abstract

A flexible stretchable battery pack is disclosed in the invention, and comprises an internal battery cell module and a stretchable packaging shell wrapping the internal battery cell module, and the internal battery cell module comprises two or more battery cells connected in series and in parallel and one or more PCBs electrically connected with the battery cells; each battery cell is connected with the PCB through a wire, and the outsides of the battery cells and the PCB are coated with glue injection layers; and the internal battery cell module is encapsulated in the stretchable packaging shell, and when the stretchable packaging shell is deformed under the action of pressure or tensile force, each battery cell of the internal battery cell module and the PCB keep an electric connection relationship in an elastic expansion restraint layer of the stretchable encapsulation shell. According to the invention, the modules of the internal battery cell module are respectively packaged, and then secondary packaging is carried out through the stretchable packaging shell, so that not only is the good stretchable performance protected, but also the good safety is achieved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a flexible and stretchable battery pack. Background technique [0002] The current flexible battery uses an ultra-thin flexible battery cell, which can be bent and has a certain degree of flexibility. It has the following defects: the number of bending times is limited, and the battery life will be lost if the number of bending times is too high, and the capacity will be reduced at the same time, about 1mAh ~100mAh; moreover, the existing ultra-thin flexible batteries can only be bent, but cannot be stretched or twisted. In addition, in order to achieve flexibility and bending, the existing flexible battery products generally have no protective shell, lack of external protection for the flexible battery, the safety is too low, and safety problems such as puncture and rupture are prone to occur. Contents of the invention [0003] A brief overview of embodiments of the inventi...

Claims

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Application Information

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IPC IPC(8): H01M50/10H01M50/183H01M50/509H01M50/519
CPCH01M50/183H01M50/10H01M50/509H01M50/519Y02E60/10
Inventor 宋泽铭何蕾张留华张浩达肖邹忠刘少鹏
Owner 嘉兴极展科技有限公司
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