CN115954588A - Packaging bag, electrochemical device and electronic apparatus - Google Patents

Abstract

The embodiment of the application relates to the technical field of electrochemical devices, and discloses a packaging bag, an electrochemical device and an electronic device, the packaging bag comprises a main body and a top edge sealing edge obtained by extending the top surface of the main body, the top edge sealing edge is provided with an avoiding groove, and the avoiding groove is configured to accommodate components. Through set up the structure of dodging the groove at the top banding, can effectively utilize the space of wrapping bag top banding, avoid the waste in space to still help alleviateing the weight of wrapping bag.

Description

Packaging bag, electrochemical device and electronic apparatus

Technical Field

The embodiment of the application relates to the technical field of electrochemical devices, in particular to a packaging bag, an electrochemical device and electronic equipment.

Background

With the progress of science and technology and the arrival of intelligent wave, miniaturized equipment and flexible equipment are more and more liked by people, such as intelligent glasses, intelligent wrist, folding cell-phone and flexible Pad. With the miniaturization of the size and the structural flexibility of electronic devices, the electronic devices put higher demands on the thickness of batteries, that is, making the batteries as thin as possible while satisfying energy density. In view of the limitation of the internal space of the electronic device, the ultra-thin battery has been developed in response to the above demand.

The battery generally comprises a packaging bag, a battery core, electrolyte, a circuit board and the like. Electrolyte and electric core are accomodate inside the wrapping bag, and the positive and negative pole ear of electric core is connected with the circuit board electricity after stretching out from the top banding of wrapping bag. The top sealing edge of the existing packaging bag is only used for extending the positive and negative electrode lugs, but compared with the width of the electrode lugs, the top sealing edge of the packaging bag is much wider, that is, the space of the top sealing edge of the existing packaging bag is wasted.

Disclosure of Invention

The technical problem that this application embodiment mainly solved provides a wrapping bag, electrochemical device and electronic equipment, can effectively utilize the space of wrapping bag top banding.

In order to solve the above technical problem, one technical solution adopted in the embodiments of the present application is: the utility model provides a packaging bag, electrochemical device is applied to the packaging bag, the packaging bag includes the main part and certainly the top banding limit that the top surface of main part extended to obtain, the top banding is provided with dodges the groove, dodge the groove and be configured to accept the first part of an official ware.

Optionally, along the length direction of the main body, the depth W1 of the avoidance groove satisfies: w1 is more than or equal to 1.5mm and less than or equal to 5mm.

Optionally, the number of the avoidance slots is one, and the avoidance slots satisfy one of the following conditions:

(1) The avoiding groove is positioned on the side part of the top sealing edge along the width direction of the main body;

(2) The avoiding groove is located in the middle of the top sealing edge so as to divide the top sealing edge into a first top sealing part and a second top sealing part.

Optionally, the number of the avoiding grooves is two or more, and the two or more avoiding grooves are arranged at the top sealing edge at intervals along the width direction of the main body.

Optionally, the projection of the avoidance groove is circular, polygonal, arcuate or multi-arcuate as viewed in the thickness direction of the main body.

Optionally, the thickness of the main body is greater than the thickness of the top seal edge along the thickness direction of the main body, and the main body and the top seal edge form a step configured to receive a component.

Optionally, in the thickness direction of the main body, the top seal edge has a first surface and a second surface which are opposite to each other, the main body has a third surface and a fourth surface which are opposite to each other, the third surface and the first surface are located on the same side of the main body, and the fourth surface and the second surface are located on the other side of the main body; the first surface and the third surface form a first step, the second surface and the fourth surface form a second step, the depth of the first step is greater than the depth of the second step along the thickness direction of the main body, and the first step is configured to receive a component.

In order to solve the above technical problem, another technical solution adopted in the embodiment of the present application is: the utility model provides an electrochemical device, includes electric core, components of elements and wrapping bag, the electric core accept in the wrapping bag, components of elements set up in outside the wrapping bag, the electric core with components of elements electricity is connected, at least part components of elements set up in dodge the inslot.

Optionally, the component part includes a circuit board, the circuit board includes a board body and an electrical component, the board body includes a fifth surface and a sixth surface which are oppositely arranged along a thickness direction of the main body of the packaging bag, the electrical component is arranged on the fifth surface, the fifth surface is arranged on the first surface, and the electrical component is located in the avoiding groove; a vertical distance H1 between the third surface and the sixth surface satisfies: h1 is more than or equal to minus 2mm and less than or equal to 2mm.

Optionally, the dodge groove is located the lateral part of top banding, first utmost point ear of electric core and second utmost point ear all certainly the top banding stretches out, follows the thickness direction of the main part of wrapping bag, the plate body with top banding superpose, the fifth surface of plate body with the first surface of top banding is connected, the first utmost point ear of electric core and second utmost point ear all with the plate body electricity is connected, electrical components is located dodge the inslot.

Optionally, dodge the groove and be located the middle part of top banding, in order to incite somebody to action the top banding separates into first top seal and second top seal, the one end of circuit board with first top seal is connected, the other end of circuit board with the second top seal is connected, electrical components is located dodge the inslot, the first utmost point ear of electricity core certainly first top seal stretch out the back with the one end electricity of circuit board is connected, the second utmost point ear of electricity core certainly the second top seal stretch out the back with the other end electricity of circuit board is connected.

In order to solve the above technical problem, another technical solution adopted in the embodiments of the present application is: an electronic device is provided, comprising the electrochemical device.

The wrapping bag of this application embodiment includes the main part and certainly the top banding that the top surface of main part extended to obtain, the top banding is provided with and dodges the groove, it is configured as and accepts the component parts to dodge the groove. Through set up the structure of dodging the groove at the top banding, can effectively utilize the space of wrapping bag top banding, avoid the waste in space to still help alleviateing the weight of wrapping bag.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is an exploded view of an electrochemical device according to an embodiment of the present invention.

Fig. 2 is an exploded view of an electrochemical device according to another aspect of the present invention.

Fig. 3 is a schematic view of a packaging bag of an electrochemical device according to an embodiment of the present invention.

Fig. 4 is a schematic view of an electrochemical device according to an embodiment of the present disclosure.

Fig. 5 is a schematic view of another perspective of the packaging bag of the electrochemical device according to the embodiment of the present application.

Fig. 6 is a schematic view of a packaging bag of an electrochemical device according to another embodiment of the present application.

Fig. 7 is a schematic view of a packaging bag of an electrochemical device according to still another embodiment of the present application.

Fig. 8 is a schematic view of a packaging bag of an electrochemical device according to still another embodiment of the present application.

Fig. 9 is an enlarged schematic view of a portion a in fig. 4.

Detailed Description

In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship as shown in the drawings for convenience in describing the present application and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, an electrochemical device 100 includes a packaging bag 10, a battery cell, and a component. The packaging bag 10 is provided with a mounting cavity, the battery cell is contained in the mounting cavity, the component is arranged outside the mounting cavity, and the battery cell is electrically connected with the component. Of course, the installation cavity also comprises electrolyte and other substances, the battery core is used for carrying out electrochemical reaction in the installation cavity, and outputting electric energy outwards through the element component or receiving and storing electric energy input from the outside. The packaging bag 10 includes a main body 11 and a top sealing edge 12 extending from a top surface of the main body 11, the top sealing edge 12 is provided with an avoiding groove 121, and at least part of component parts are arranged in the avoiding groove 121. The first direction X in fig. 1 represents a longitudinal direction of the body 11, the second direction Y represents a width direction of the body 11, and the third direction Z represents a thickness direction of the body 11.

It will be appreciated that in the embodiment of the present application, the component is a circuit board 20, the circuit board 20 is disposed on the top sealing edge 12 of the package 10, and at least a portion of the circuit board is located in the escape slot.

Since the fixing carrier of the circuit board 20 is the packaging bag 10, the top edge seal 12 of the packaging bag 10 in the prior art usually remains intact, so that part of the top edge seal 12 that does not participate in the fixing function occupies part of the space of the electrochemical device 100, and the thickness or length of the electrochemical device 100 is increased. The electrochemical device 100 of the embodiment of the present application can avoid the groove 121 by providing the avoiding groove 121 on the top sealing edge 12 of the packaging bag 10, the protruding portion of the circuit board 20 can be placed in the avoiding groove 121, the space of the top sealing edge 12 of the packaging bag 10 can be effectively utilized while the circuit board 20 can be fixed on the packaging bag 10, and therefore the thickness and the length of the electrochemical device 100 can be considered simultaneously, that is, under the premise that the length of the electrochemical device 100 is not changed, the thickness of the electrochemical device 100 can be reduced.

It is understood that the packaging bag 10 in the embodiment of the present application is made of an aluminum plastic film, that is, the electrochemical device 100 is a soft package battery, and in other embodiments, the packaging bag 10 may also be made of a hard metal material, for example, the packaging bag 10 is a steel shell, and in this case, the electrochemical device 100 is a hard shell battery.

Referring to fig. 3, the package 10 includes a main body 11 and a top sealing edge 12. The top seal 12 is extended from the top surface of the main body 11 in the longitudinal direction of the main body 11. Wherein, along the thickness direction of main part 11, the thickness of main part 11 is greater than the thickness of top banding 12 to form step 13 between main part 11 and top banding 12, circuit board 20 sets up in step 13.

In some embodiments, referring to fig. 3, along the thickness direction of the main body 11, the top edge 12 has a first surface 122 and a second surface 123 disposed oppositely, and the main body 11 has a third surface 111 and a fourth surface 112 disposed oppositely, wherein the first surface 122 and the third surface 111 are both located on the same side of the main body 11, and the second surface 123 and the fourth surface 112 are both located on the other side of the main body 11. The first surface 122 and the third surface 111 enclose a first step 131, the second surface 123 and the fourth surface 112 enclose a second step 132, and the circuit board 20 may be disposed on the first step 131 or the second step 132. Due to the requirements of the manufacturing process and the component assembly, an accommodating space is reserved on two sides of the top sealing edge 12 along the thickness direction of the main body 11, and the accommodating space can be used for installing the circuit board 20.

In the embodiment of the present application, the depth of the first step 131 is greater than the depth of the second step 132 in the thickness direction of the body 11, that is, the receiving space of the first step 131 is larger, and thus the space of the step 13 can be more fully utilized by disposing the circuit board 20 at the first step 131. Of course, in some other embodiments, when the depth of the second step 132 is greater than the depth of the first step 131, the circuit board 20 may also be disposed on the second step 132.

In some embodiments, referring to fig. 5, along the width direction of the main body 11, the width L1 of the avoiding groove 121 satisfies: l1 is more than or equal to 6.5mm and less than or equal to 13.6mm. Since both ends of the top edge seal 12 are generally used as a carrier for fixing the circuit board 20, the width of the avoiding groove 121 cannot be too long to ensure the mounting effect; while the width of the avoidance groove 121 cannot be too short to accommodate the raised portion of the circuit board 20. Along the length direction of the main body 11, the depth W1 of the escape groove 121 satisfies: w1 is more than or equal to 1.5mm and less than or equal to 5mm. The depth of the avoiding groove 121 along the length direction of the main body 11 can be set according to actual requirements, and when the surface of the circuit board 20 has a large number of convex portions, the depth of the avoiding groove 121 can be increased within the above range.

In some embodiments, referring to fig. 5 to 8, the number of the avoiding grooves formed on the top sealing edge of the packaging bag is one. Along the width direction of main part, dodge the groove and can be located the lateral part of top banding. One end of the circuit board may be coupled to the remaining side of the top edge seal to enable the circuit board to be secured to the top edge seal. The positive and negative electrode ears of the battery core can extend out of the residual top sealing edge to be connected with the circuit board. Of course, dodge the groove and also can be located the middle part of top banding, dodge the groove promptly and separate into first top seal portion and second top seal portion with the top banding, the one end and the first top seal portion of circuit board are connected, and the other end and the second top seal portion of circuit board are connected, and first top seal portion and second top seal portion play the supporting role to the circuit board jointly. One of the positive and negative electrode lugs of the battery cell extends out of the first top sealing part and then is electrically connected with the circuit board, and the other lug extends out of the second top sealing part and then is electrically connected with the circuit board.

In other embodiments, the number of the avoiding grooves is two or more, and the two or more avoiding grooves are arranged at intervals on the top sealing edge along the width direction of the main body. Each of the avoiding grooves can be used for accommodating part of the component parts, so that the space of the top sealing edge can be fully utilized. The mode that a plurality of dodging grooves are arranged at intervals is adopted, so that the element device component can be contained in the dodging grooves, and meanwhile, the connection strength between the element device component and the top sealing edge can be ensured.

It can be understood that, referring to fig. 5 to 8, in the embodiment of the present application, in order to facilitate the manufacture of the packaging bag 10, the projection shape of the escape groove 121 is rectangular when viewed along the thickness direction of the main body 11. In other embodiments, the projection of the avoiding groove 121 may be circular, polygonal, arcuate, or multi-arcuate.

Referring to fig. 2 and 5, the top seal edge 12 includes a first top seal portion 124 and a second top seal portion 125. The first top seal part 124 and the second top seal part 125 are disposed at an interval along the width direction of the main body 11, and the clearance between the first top seal part 124 and the second top seal part 125 forms the aforementioned avoiding groove 121. One end of the circuit board 20 is disposed on the first top sealing portion 124, the other end of the circuit board 20 is disposed on the second top sealing portion 125, and the first top sealing portion 124 and the second top sealing portion 125 support the circuit board 20 together. The first tab of the battery cell extends from the first top sealing portion 124 and is electrically connected to one end of the circuit board 20, and the second tab of the battery cell extends from the second top sealing portion 125 and is electrically connected to the other end of the circuit board 20, wherein when the first tab is a positive tab, the second tab is a negative tab, and when the first tab is a negative tab, the second tab is a positive tab. Further, in order to simplify the manufacturing process of the packing bag 10, the first and second top seal portions 124 and 125 are symmetrically disposed about the symmetry axis, which is a symmetry line of the width of the body 11.

In some embodiments, the width L2 of the first top seal 12 in the width direction of the main body 11 satisfies: l2 is more than or equal to 2mm and less than or equal to 5mm; and/or the width L3 of the second overseal 125 satisfies: l3 is more than or equal to 2mm and less than or equal to 5mm. Because the first and second top edge seals 12, 12 are typically used to support circuit boards 20, the width of the first and second top edge seals 12, 12 cannot be too small or meet the requirements for supporting circuit boards 20.

Referring to fig. 1 and 2 and other drawings, the circuit board 20 includes a board body 21 and an electrical component 22, the board body 21 has a fifth surface 211 and a sixth surface 212 opposite to each other, the electrical component 22 is disposed on the fifth surface 211 of the board body 21 to form an electrical connection with the board body 21, and the electrical component 22 protrudes from the fifth surface 211 of the board body 21. When the circuit board 20 is mounted on the top seal 12, the fifth surface 211 of the board body 21 is connected to the first top seal 124 and the second top seal 125, respectively, and the electrical component 22 is located in the receiving slot. For the convenience of soldering, the electrical component 22 is usually mounted on the same surface of the board body 21 as much as possible, i.e. the fifth surface 211, and the sixth surface 212 of the board body 21 is more flat and has approximately the same protruding height as compared with the fifth surface 211, so that the thickness of the top sealing edge 12 and the circuit board 20 after being stacked can be greatly reduced by placing the fifth surface 211 of the board body 21 towards the avoiding groove 121 and placing the sixth surface 212 of the board body 21 away from the avoiding groove 121.

In some embodiments, referring to fig. 9, when the board body 21 and the top seal portion of the circuit board 20 are overlapped along the thickness direction of the main body 11, the vertical distance H1 between the third surface 111 of the main body 11 and the sixth surface 212 of the board body 21 of the packaging bag 10 satisfies: h1 is more than or equal to minus 2mm and less than or equal to 2mm. The vertical distance H1 is based on the third surface 111, and when the vertical distance H1 is negative, it indicates that the sixth surface 212 is lower than the third surface 111 along the thickness direction of the main body 11, i.e. the sixth surface 212 is closer to the fourth surface 112 than the third surface 111; when the vertical distance H1 is a positive value, it means that the sixth surface 212 is higher than the third surface 111 along the thickness direction of the main body 11, i.e. the sixth surface 212 is farther away from the fourth surface 112 than the third surface 111; when the perpendicular distance H1 is zero, it means that the sixth surface 212 and the third surface 111 are located in the same plane along the thickness direction of the body 11. By controlling the vertical distance H1 between the sixth surface 212 of the plate body 21 and the third surface 111 of the main body 11, the thickness of the top sealing edge 12 and the circuit board 20 after being stacked can be effectively controlled, so that the electrochemical device 100 can meet the actual application requirements.

In some embodiments, with continued reference to fig. 4, the thickness H2 of the body 11 along the thickness direction of the body 11 satisfies: h2 is more than or equal to 2mm and less than or equal to 5mm. In order to meet the requirements of multiple scenes, in actual production, the thickness of the packaging bag 10 needs to be strictly controlled so that the overall thickness of the electrochemical device 100 is as thin as possible, so that the electrochemical device can be installed in electronic products such as smart phones, tablet computers, wearable devices, and the like.

The electrochemical device 100 according to the embodiment of the present application includes a packaging bag 10, a battery cell, and a circuit board 20. The battery cell is disposed inside the packaging bag 10, the circuit board 20 is disposed outside the packaging bag 10, and the battery cell is electrically connected to the circuit board 20. The packing bag 10 includes a main body 11 and a top sealing edge 12, and the top sealing edge 12 extends in a length direction from a top surface of the main body 11. The top edge seal 12 is provided with an escape groove 121, the circuit board 20 overlaps the top edge seal 12, and at least a portion of the circuit board 20 is disposed in the escape groove 121. Through the arrangement, on the premise that the length of the electrochemical device 100 is not increased, the space of the top sealing edge 12 can be fully utilized by accommodating part of the circuit board 20 in the avoiding groove 121, and the thickness of the circuit board 20 after being stacked with the top sealing edge 12 can be effectively reduced, so that the overall thickness of the electrochemical device 100 is reduced.

The present application also provides embodiments of an electronic device that includes an electrochemical apparatus 100. For the structure and function of the electrochemical device 100, reference may be made to the above-mentioned embodiments, which are not described in detail herein.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (12)

1. A packaging bag for an electrochemical device, characterized in that,

the wrapping bag includes the main part and certainly the top banding limit that the top surface of main part extended to obtain, the top banding is provided with and dodges the groove, it is configured to accept the first part to dodge the groove.

2. The packaging bag according to claim 1,

along the length direction of the main part, the degree of depth W1 of dodging the groove satisfies: w1 is more than or equal to 1.5mm and less than or equal to 5mm.

3. The packaging bag according to claim 1,

the number of the avoiding grooves is one, and the avoiding grooves meet one of the following conditions:

(1) The avoiding groove is positioned on the side part of the top sealing edge along the width direction of the main body;

(2) Along the width direction of main part, dodge the trench and be located the middle part of top banding, in order will top banding is separated into first top portion of sealing and second top portion of sealing.

4. The packaging bag according to claim 1,

the quantity of avoiding the groove is two or more, follows the width direction of main part, two or more avoid the groove interval set up in the top banding.

5. The packaging bag according to claim 1,

the projection of the avoidance groove is circular, polygonal, arched or multi-arc when observed along the thickness direction of the main body.

6. The packaging bag according to claim 1,

the thickness of the main body is greater than the thickness of the top seal edge along the thickness direction of the main body, and the main body and the top seal edge form a step which is configured to accommodate a component.

7. The packaging bag according to claim 6,

the top seal edge is provided with a first surface and a second surface which are arranged oppositely along the thickness direction of the main body, the main body is provided with a third surface and a fourth surface which are arranged oppositely, the third surface and the first surface are positioned on the same side of the main body, and the fourth surface and the second surface are positioned on the other side of the main body;

the first surface and the third surface form a first step, the second surface and the fourth surface form a second step, the depth of the first step is greater than the depth of the second step along the thickness direction of the main body, and the first step is configured to receive a component.

8. An electrochemical device comprising a cell, a component, and the package of any of claims 1-7, wherein the cell is contained within the package, the component is disposed outside the package, the cell is electrically connected to the component, and at least a portion of the component is disposed within the avoiding slot.

9. The electrochemical device according to claim 8,

the element part comprises a circuit board, the circuit board comprises a board body and an electrical element, the thickness direction of the main body of the packaging bag is followed, the board body comprises a fifth surface and a sixth surface which are oppositely arranged, the electrical element is arranged on the fifth surface, the fifth surface is arranged on the first surface, and the electrical element is positioned in the avoiding groove;

a vertical distance H1 between the third surface and the sixth surface satisfies: h1 is more than or equal to minus 2mm and less than or equal to 2mm.

10. The electrochemical device according to claim 9,

dodge the groove and be located the lateral part of top banding, first utmost point ear of electric core and second utmost point ear are all certainly the top banding stretches out, follows the thickness direction of the main part of wrapping bag, the plate body with top banding superpose, the fifth surface of plate body with the first surface of top banding is connected, the first utmost point ear of electric core and second utmost point ear all with the plate body electricity is connected, electrical components is located dodge the inslot.

11. The electrochemical device according to claim 9,

the avoiding groove is located in the middle of the top sealing edge, so that the top sealing edge is separated into a first top sealing part and a second top sealing part, one end of the circuit board is connected with the first top sealing part, the other end of the circuit board is connected with the second top sealing part, the electrical element is located in the avoiding groove, a first tab of the battery cell is connected with one end of the circuit board after extending out of the first top sealing part, and a second tab of the battery cell is connected with the other end of the circuit board after extending out of the second top sealing part.

12. An electronic device comprising an electrochemical device according to any one of claims 8 to 11.

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