CN218101462U

CN218101462U - Battery and electronic device

Info

Publication number: CN218101462U
Application number: CN202222210892.0U
Authority: CN
Inventors: 郗帅鹏
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2022-12-20
Anticipated expiration: 2032-08-22

Abstract

The utility model discloses a battery and electronic equipment, battery include body, banding and circuit board, and the banding sets up in the side of body, and the banding extends along the circumference of body, and the banding forms the step face of being connected with the side of body, and the circuit board sets up on the step face, and the circuit board links to each other with banding and/or body. The utility model provides a battery has the advantage that space utilization is high.

Description

Battery and electronic device

Technical Field

The utility model relates to a battery technology field, concretely relates to battery and electronic equipment.

Background

In the related art, the edge side of the battery cell of the battery has a sealing edge with a certain width, and the sealing edge needs to have a certain sealing width in order to ensure the sealing property of the battery cell. The banding can upwards buckle in order to form the hem generally, but when battery thickness is less than a definite value after, because the bottleneck of seal width, causes the height of hem to exceed electric core body easily. If the edge sealing is not bent, the extending direction of the battery is easy to cause large space waste, so that the space utilization rate of the battery is low.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent.

Therefore, the embodiment of the present invention provides a battery, which has the advantage of high space utilization.

The embodiment of the utility model provides an electronic equipment is still provided.

The battery according to the embodiment of the utility model comprises a body, an edge sealing and a circuit board, wherein the edge sealing is arranged on the side surface of the body, the edge sealing extends along the circumferential direction of the body, and the edge sealing forms a step surface connected with the side surface of the body; the circuit board is arranged on the step surface and connected with the sealing edge and/or the body.

According to the utility model discloses battery, the relative body of banding forms the step face, and the width direction of banding becomes angle with the thickness direction of body promptly, and the banding can not exceed the thickness of body at the size of body thickness direction, and the thickness of body can be designed from this to be thinner. At the moment, the circuit board is connected with the sealing part and/or the body and then is positioned on the step surface, so that the utilization of the space where the sealed edge is positioned is realized, the space waste of the battery in the horizontal direction is avoided, and the space utilization rate of the battery is improved.

In some embodiments, the circuit board extends along the circumferential direction of the body, and the width of the step surface is greater than or equal to the width of the circuit board.

In some embodiments, the battery further comprises a thermal conductive adhesive layer adhered between the step surface and the circuit board.

In some embodiments, the body has a first end and a second end opposite to each other along the length direction, the first end of the body is provided with a tab, and the circuit board is located at the first end of the body and electrically connected with the tab.

In some embodiments, the circuit board includes a first section and a second section connected to each other, the first end extends along the length direction of the body, and the second section extends along the width direction of the body and is electrically connected to the tab.

In some embodiments, the circuit board includes a first section, a second section and a third section connected to each other, the first section and the third section both extend along a length direction of the body, the first section and the second section are located at two sides of the width direction of the body, and the second section extends along the width direction of the body and is electrically connected to the tab.

In some embodiments, the battery further comprises a temperature acquisition device mounted at an end of the circuit board remote from the tab.

In some embodiments, the battery further includes a heat dissipation adhesive layer bonded to the seal edge and the body, at least a portion of the heat dissipation adhesive layer being adjacent to the first end and the second end of the body, the at least a portion of the heat dissipation adhesive layer being disposed opposite the circuit board in a thickness direction.

In some embodiments, the body has along relative first face of thickness direction and second face, the orientation of first face with the orientation of step face is the same, the banding have with the relative third of step face, the heat dissipation glue film is followed the circumference of body extends, the heat dissipation glue film with first face, the second face, the step face, the third face and the circuit board deviates from the surface bonding of step face.

In some embodiments, the heat dissipation glue layer comprises a protective layer, a heat dissipation layer and an adhesive layer which are sequentially connected in the thickness direction.

In some embodiments, the protective layer comprises a PI layer, and the heat sink layer comprises at least one of a graphene layer, a graphite layer, and a metal foil.

An electronic device according to an embodiment of the present invention includes a battery as described in any of the above embodiments.

According to the utility model discloses electronic equipment's technical advantage is the same with the technical advantage of the battery of above-mentioned embodiment, and this unnecessary repetition is here repeated.

Drawings

Fig. 1 is a schematic diagram of a battery according to an embodiment of the present invention, wherein the thermal conductive adhesive layer is hidden.

Fig. 2 is another schematic diagram of a battery according to an embodiment of the present invention, wherein the thermal conductive adhesive layer is hidden.

Fig. 3 is a top view of a battery according to an embodiment of the present invention.

Fig. 4 is a bottom view of a battery according to an embodiment of the present invention.

Reference numerals:

1. a body; 11. a tab; 12. a first side; 13. a second face; 2. sealing edges; 3. a circuit board; 31. a first stage; 32. a second stage; 33. a third stage; 4. a heat-conducting adhesive layer; 5. a temperature acquisition device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

A battery according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

According to the utility model discloses battery includes body 1, banding 2 and circuit board 3. The sealing edge 2 is arranged on the side surface of the body 1, the sealing edge 2 extends along the circumferential direction of the body 1, and the sealing edge 2 forms a step surface connected with the side surface of the body 1. The circuit board 3 is arranged on the step surface, and the circuit board 3 is connected with the seal edge 2 and/or the body 1.

According to the utility model discloses battery, the relative body 1 of banding 2 forms the step face, and the width direction of banding 2 becomes the angle with the thickness direction of body 1 promptly, and banding 2 can not exceed the thickness of body 1 at the size of body 1 thickness direction, and the thickness of body 1 can be designed thinner from this. At this moment, the circuit board 3 is connected with the sealing and/or body 1 and then is positioned on the step surface, so that the utilization of the space where the sealing edge 2 is positioned is realized, the space waste of the battery in the horizontal direction is avoided, and the space utilization rate of the battery is improved.

Illustratively, the body 1 includes a cell and a protective layer covering the cell, and the protective layer and the sealing edge 2 are integrally formed. The sealing edge 2 may be only disposed on two sides of the body 1 in the width direction, or may be disposed on any side of the body 1 and surround the body 1.

In some embodiments, as shown in fig. 1 and 2, the circuit board 3 extends along the circumferential direction of the body 1, and the width of the step surface is equal to or greater than the width of the circuit board 3.

Compared with the prior art in which the circuit board 3 is integrally located on the side of the body 1 provided with the tab 11, the width of the circuit board 3 can be designed to be smaller, and meanwhile, the area of the circuit board 3 can be enlarged, thereby ensuring the protection performance of the circuit board 3 on the battery. Moreover, the extending directions of the circuit boards 3 for the edge sealing 2 are the same, and the circuit boards 3 are all arranged on the step surface of the edge sealing 2, so that the circuit boards 3 do not occupy the space outside the edge sealing 2, and the space utilization rate of the battery is further improved.

Specifically, the width of circuit board 3 equals the width of banding 2, and circuit board 3 sets up when the step face, and the top surface that circuit board 3 deviates from the step face still is less than the top surface of body 1, effectively avoids circuit board 3 evagination from this and influences the connection stability of circuit board 3.

In some embodiments, the battery further comprises a thermal adhesive layer 4, the thermal adhesive layer 4 being adhered between the step surface and the circuit board 3.

Circuit board 3 bonds with banding 2 through heat-conducting adhesive layer 4 promptly and links to each other, and when heat-conducting adhesive layer 4 accomplished circuit board 3's fixed, also can be with the heat transfer of circuit board 3 production to banding 2 and body 1 on, improved circuit board 3's radiating efficiency.

In some embodiments, as shown in fig. 1 and 2, the body 1 has a first end and a second end opposite to each other along the length direction, the first end of the body 1 is provided with a tab 11, and the circuit board 3 is located at the first end of the body 1 and electrically connected with the tab 11.

Therefore, on the basis of ensuring that the circuit board 3 has enough area, the circuit board 3 is convenient to be directly connected with the lug 11, and the electric connection stability of the circuit board 3 and the lug 11 is ensured.

In some embodiments, as shown in fig. 1, the circuit board 3 includes a first section 31 and a second section 32 connected to each other, the first end extends along the length direction of the body 1, and the second section 32 extends along the width direction of the body 1 and is electrically connected to the tab 11.

That is, the circuit board 3 may be L-shaped, and may be arranged on the stepped surface of the sealing edge 2 in the length direction of the body 1 through the first section 31 to enlarge the area of the circuit board 3 and reduce the width of the second section 32, thereby improving the space utilization of the battery.

In some embodiments, as shown in fig. 2, the circuit board 3 includes a first section 31, a second section 32, and a third section 33 that are connected. The first section 31 and the third section 33 both extend along the length direction of the body 1, the first section 31 and the second section 32 are located at both sides of the width direction of the body 1, and the second section 32 extends along the width direction of the body 1 and is electrically connected with the tab 11.

That is, the circuit board 3 may also be U-shaped, and the first section 31 and the third section 33 may be arranged on the step surface of the sealing edge 2 along the length direction of the body 1, so that the area of the circuit board 3 may be enlarged, and the width of the second section 32 may be reduced, thereby improving the space utilization of the battery.

In some embodiments, as shown in fig. 1 and 2, the battery further comprises a temperature collection device 5, and the temperature collection device 5 is mounted at one end of the circuit board 3 far away from the tab 11. The temperature acquisition device 5 is far away from the heat source of the circuit board 3, and the temperature detected by the temperature acquisition device 5 is basically the average temperature of the battery, so that the temperature detection accuracy of the battery is higher.

Specifically, the temperature acquisition device 5 may be a temperature sensor, which is located substantially at the middle position of the body 1 in the length direction.

In some embodiments, as shown in fig. 3 and 4, the battery further includes a heat dissipation adhesive layer, the heat dissipation adhesive layer is adhered to the sealing edge 2 and the body 1, at least a portion of the heat dissipation adhesive layer is adjacent to the first end and the second end of the body 1, and at least a portion of the heat dissipation adhesive layer is disposed opposite to the circuit board 3 in the thickness direction.

When the width of circuit board 3 is narrower, its heat that produces in battery charge and discharge process is higher, and the temperature rise is too fast, and the heat dissipation glue film can lead the second end of body 1 with the heat that circuit board 3 produced more fast, has further improved the radiating efficiency of circuit board 3 from this, guarantees that circuit board 3 maintains in setting for the temperature range, guarantees the charge and discharge performance of battery.

In some embodiments, as shown in fig. 3 and 4, the body 1 has a first surface 12 and a second surface 13 opposite to each other in the thickness direction, the first surface 12 faces the step surface, the sealing edge 2 has a third surface opposite to the step surface, the heat dissipation glue layer extends along the circumferential direction of the body 1, and the heat dissipation glue layer is adhered to the first surface 12, the second surface 13, the step surface, the third surface and the surface of the circuit board 3 away from the step surface.

The heat dissipation glue layer is one, and a heat dissipation glue layer covers the edge sealing 2 and the circuit board 3, and also covers the edge portions of the first surface 12 and the second surface 13 of the body 1, so that the heat dissipation area of the heat dissipation glue layer is larger, and the heat dissipation efficiency of the heat dissipation glue layer to the air and the heat conduction efficiency of the heat conduction glue layer to the second end of the body 1 are higher.

Specifically, as shown in fig. 3, the portions of the heat-dissipating adhesive layer located on the first surface 12 and the step surface are broken at two corner positions of the body 1 to ensure the adhering contact with the first surface 12, the step surface and the circuit board 3.

In some embodiments, the heat dissipation adhesive layer comprises a protective layer, a heat dissipation layer and an adhesive layer which are sequentially connected in the thickness direction. From this, the heat dissipation glue film passes through the inoxidizing coating and guarantees that it prevents the thorn and prevent scraping the performance, and then effectively guarantees the radiating efficiency on heat dissipation layer, also guarantees the adhesion stability of viscose layer and banding 2, circuit board 3 and body 1.

Specifically, the protective layer comprises a PI (Polyimide) layer, so that the protective layer has good heat resistance and is not easy to deform due to temperature rise, and the protective performance of the protective layer is ensured.

The heat dissipation layer includes at least one of a graphene layer, a graphite layer, and a metal foil. Therefore, the heat-dissipating glue layer has high heat conductivity.

According to the utility model discloses electronic equipment includes the battery of any embodiment as above.

According to the utility model discloses the technical advantage of electronic equipment is the same with the technical advantage of the battery of above-mentioned embodiment, and it is no longer repeated here.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims

1. A battery, comprising:

the sealing edge is arranged on the side surface of the body, the sealing edge extends along the circumferential direction of the body, and the sealing edge forms a step surface connected with the side surface of the body; and

the circuit board is arranged on the step surface and connected with the sealing edge and/or the body.

2. The battery of claim 1, wherein the circuit board extends along a circumferential direction of the body, and a width of the step surface is equal to or greater than a width of the circuit board.

3. The battery of claim 2, further comprising a layer of thermally conductive adhesive bonded between the step surface and the circuit board.

4. The battery of any of claims 1-3, wherein the body has first and second lengthwise opposed ends, the first end of the body is provided with a tab, and the circuit board is located at the first end of the body and electrically connected to the tab.

5. The battery of claim 4, wherein the circuit board includes a first section and a second section connected to each other, the first end extending along a length of the body, the second section extending along a width of the body and electrically connected to the tab.

6. The battery of claim 4, wherein the circuit board comprises a first section, a second section and a third section which are connected with each other, the first section and the third section both extend along the length direction of the body, the first section and the second section are positioned at two sides of the width direction of the body, and the second section extends along the width direction of the body and is electrically connected with the tab.

7. The battery of claim 4, further comprising a temperature collection device mounted to an end of the circuit board distal from the tab.

8. The battery of claim 4, further comprising a heat-dissipating adhesive layer bonded to the edge seal and the body, at least a portion of the heat-dissipating adhesive layer being adjacent to the first end and the second end of the body, the at least a portion of the heat-dissipating adhesive layer being disposed opposite the circuit board in a thickness direction.

9. The battery of claim 8, wherein the body has a first face and a second face opposite in a thickness direction, the first face is oriented in the same direction as the step face, the edge seal has a third face opposite the step face, the heat dissipation adhesive layer extends in a circumferential direction of the body, and the heat dissipation adhesive layer is adhered to surfaces of the first face, the second face, the step face, the third face, and the circuit board facing away from the step face.

10. The battery of claim 8, wherein the heat dissipation adhesive layer comprises a protective layer, a heat dissipation layer and an adhesive layer which are sequentially connected in the thickness direction.

11. The battery of claim 10, wherein the protective layer comprises a PI layer and the heat sink layer comprises at least one of a graphene layer, a graphite layer, and a metal foil.

12. An electronic device comprising a battery according to any of claims 1-11.