CN110364654B

CN110364654B - Battery module and electronic equipment thereof

Info

Publication number: CN110364654B
Application number: CN201910602678.XA
Authority: CN
Inventors: 马俊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2022-08-05
Anticipated expiration: 2039-07-05
Also published as: CN110364654A

Abstract

The application provides a battery module and electronic equipment thereof, wherein the battery module comprises a battery core, a battery protection plate and a battery packaging film; the battery core comprises a first surface, a second surface and a side face, wherein the first surface and the second surface are arranged in a back-to-back mode, the side face of the battery core is adjacent to the battery protection plate, the distance between the battery protection plate and the first surface of the battery core is smaller than the distance between the battery protection plate and the second surface of the battery core, all electronic devices on the battery protection plate are arranged on one side, far away from the first surface of the battery core, of the battery protection plate, and the battery core and the battery protection plate are wrapped and packaged by a battery packaging film. The battery module has the advantages that the packaging position of the battery protection plate is reasonably arranged, so that the risk that the battery packaging film is punctured can be reduced, and the reliability of the whole electronic equipment product is improved.

Description

Battery module and electronic equipment thereof

Technical Field

The invention relates to the technical field of battery packaging structures, in particular to a battery module and electronic equipment thereof.

Background

The battery module for electronic products generally has a structure that a battery core, a battery protection plate and the like are wrapped inside an encapsulation film, and the battery protection plate is provided with an electronic device. Especially when the battery is installed inside electronic equipment, because electronic equipment inner structure space is limited, the stack structure is compact between each inside structure subassembly, causes the extrusion to the battery module more easily, and then makes the encapsulation membrane of battery module suffer destruction, has increased the probability that electronic equipment complete machine broke down.

Disclosure of Invention

An aspect of the present embodiment provides a battery module including a battery core, a battery protection plate, and a battery encapsulation film; the battery core comprises a first surface, a second surface and a side face, wherein the first surface and the second surface are arranged in a back-to-back mode, the side face of the battery core is adjacent to the battery protection plate, the distance between the battery protection plate and the first surface of the battery core is smaller than the distance between the battery protection plate and the second surface of the battery core, all electronic devices on the battery protection plate are arranged on one side, far away from the first surface of the battery core, of the battery protection plate, and the battery core and the battery protection plate are wrapped and packaged by a battery packaging film.

Another aspect of the embodiments of the present application further provides an electronic device, where the electronic device includes a middle frame and the battery module in the above embodiments; the middle frame is provided with a battery compartment, the shape profile of the battery compartment is matched with the shape profile of the battery module, and the battery module is arranged in the battery compartment.

The battery module and the electronic equipment thereof that this application embodiment provided, the structure of its battery module can reduce the risk that battery packaging film is punctured through the encapsulation position of reasonable setting battery protection shield, and then improves the reliability of electronic equipment product complete machine.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a conventional battery package structure;

FIG. 2 is a schematic structural diagram of an embodiment of a battery module for an electronic device according to the present disclosure;

FIG. 3 is a schematic side view of the battery cell and the battery protection plate of the embodiment of FIG. 2;

FIG. 4 is a schematic front view illustrating the structure of the battery cell engaged with the battery protection plate in the embodiment of FIG. 2;

FIG. 5 is a schematic structural diagram of another embodiment of a battery module for an electronic device according to the present application;

fig. 6 is a schematic structural diagram of another embodiment of a battery module for an electronic device according to the present application;

FIG. 7 is a schematic structural diagram of a battery module for an electronic device according to still another embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a partial structure of an embodiment of an electronic device of the present application;

FIG. 9 is a schematic diagram of a partial structure of another embodiment of an electronic device of the present application;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive step are within the scope of the present invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional battery packaging structure, in which a battery is packaged at a middle position, that is, a battery protection plate 13 is also placed at a middle position of a side surface of a battery cell 11, electronic devices 14 are respectively attached to two sides of the battery protection plate 13, and finally an outer layer is wrapped by a packaging film 15. It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

As is well known, since most batteries are installed in a casing with extremely limited space, the external packaging film 15 structure is easily squeezed, and the electronic device 14 in such a packaging structure can easily burst the packaging film 15, so that the packaging film 15 is broken, and the electronic device 14 leaks, thereby affecting the safety and the service life of the battery.

In view of the above, an embodiment of the present application provides a battery module, please refer to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the battery module for an electronic device, and it should be noted that the electronic device in the present application may include an electronic device with a battery module, such as a mobile phone, a tablet computer, a notebook computer, and a wearable device. The battery module 100 includes, but is not limited to, a battery cell 110, a battery protection plate 120, and a battery encapsulation film 130.

Specifically, referring to fig. 3 and fig. 4 together, fig. 3 is a schematic side view of a structure of the battery cell in the embodiment of fig. 2 cooperating with the battery protection plate, and fig. 4 is a schematic front view of the structure of the battery cell in the embodiment of fig. 2 cooperating with the battery protection plate. The battery core 110 includes a first surface 111, a second surface 112 and a side 113 connecting the first surface 111 and the second surface 112, which are disposed opposite to each other, and the battery protection board 120 is disposed adjacent to the side 113 of the battery core 110, wherein the battery protection board 120 may be a PCB board on which electronic devices 140 (the number and the type may be plural, and may include, for example, resistors, capacitors, microprocessors, inductors, and the like) are connected, and the battery protection board 120 is used to provide circuit protection for the battery module 100, ensure that the battery module 100 has stable input (current or voltage, and the like) during charging, and have stable output during discharging. It should be noted that the terms "first", "second" and "third" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" 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.

Alternatively, in the present embodiment, the distance L1 between the battery protection plate 120 and the first surface 111 of the battery core 110 is smaller than the distance L2 between the battery protection plate 120 and the second surface 112 of the battery core 110, the electronic devices 140 on the battery protection plate 120 are all disposed on the side of the battery protection plate 120 away from the first surface 111 of the battery core 110, and the battery packaging film 130 wraps and packages the battery core 110 and the battery protection plate 120. The battery protection plate 120 in this embodiment is disposed at a position close to one side surface of the battery core 110, and the electronic device 140 is disposed on the same side surface of the battery protection plate 120, so as to ensure that the electronic device 140 has a sufficient accommodating space 1301 in the packaging film 130, even if the packaging film 130 is deformed by extrusion, the electronic device 140 is not easy to pierce the packaging film 130, thereby improving the safety performance of the battery module and prolonging the service life.

Further, referring to fig. 5, fig. 5 is a schematic structural diagram of another embodiment of the battery module for an electronic device according to the present application, in which a package opening 1101 of a battery core 110 is located on a side surface 113 of the battery core, and the battery protection plate 120 is disposed corresponding to the side surface 113 of the battery core 110, where the package opening 1101 is located. The battery protection plate 120 and the package opening 1101 of the battery core 110 in the embodiment are disposed on the same side of the battery core 110, so that the electronic device 140 on the battery protection plate 120 can be conveniently connected with the internal structure lead of the battery core 110.

Optionally, in this embodiment, a distance L3 between the package opening 1101 of the battery cell 110 and the first surface 111 is smaller than a distance L4 between the package opening 1101 and the second surface 112. The design structure can further enable the battery protection plate 120 to be close to the packaging opening 1101 of the battery core 110, and facilitates the lead connection of the electronic device 140 on the battery protection plate 120 and the internal structure of the battery core 110. Further, in the present embodiment, the sealing opening 1101 may be disposed adjacent to the first surface 111, and in this design structure, since the battery protection plate 120 is close to the sealing opening 1101 of the battery core 110, the accommodating space 1301 can be made larger, and thus the accommodating structure is more complicated, more structures of the electronic device 140 are accommodated, and the electronic device 140 is less likely to pierce the battery sealing film 130. It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, in some other embodiments, the battery protection plate 120 and the package opening 1101 of the battery core 110 are not disposed on the same side of the battery core 110, please refer to fig. 6, fig. 6 is a schematic structural diagram of another embodiment of the battery module for an electronic device according to the present application, in this embodiment, the battery protection plate 120 and the package opening 1101 of the battery core 110 are disposed on opposite sides of the battery core 110, and the battery protection plate 120 is connected to the internal structure of the battery core 110 through the FPC 1201.

Referring to fig. 7, fig. 7 is a schematic structural view of a battery module for an electronic device according to another embodiment of the present disclosure, and further optionally, the battery protection plate 120 in this embodiment includes a first supporting surface 121, a second supporting surface 122 disposed opposite to each other, and a mounting surface 123 connecting the first supporting surface 121 and the second supporting surface 122, the electronic device 140 is fixedly disposed on the first supporting surface 121, and the second supporting surface 122 is coplanar with the first surface 111 of the battery core 110; the mounting surface 123 supports the side surface 113 of the battery cell 110. With the structure of the embodiment, the accommodating space 1301 can be enlarged to the maximum extent by disposing the side of the battery protection plate 120 where the electronic device 140 is not disposed and coplanar with the first surface 111 of the battery core 110, and the risk of the battery packaging film 130 being punctured can be further reduced.

Referring to fig. 7, optionally, in the present embodiment, the electronic device 140 of the battery protection plate 120 is coated with a protective adhesive layer 150, and the protective adhesive layer 150 may function to cover the electronic device 140, so as to prevent the battery packaging film 130 from being punctured by a sharp portion of the electronic device 140. On the other hand, the protection device can electrically protect the electronic device 140 and prevent the electronic device 140 (or the battery protection board 120) from leaking electricity. Optionally, the protective adhesive layer is a UV curable adhesive or other insulating resin adhesive, which is not listed here.

Further, referring to fig. 8, fig. 8 is a schematic partial structure diagram of an embodiment of the electronic device, where the electronic device in this embodiment includes a middle frame 200, a main control circuit board 300, and the battery module 100 in the foregoing embodiment; the middle frame 200 is provided with a battery compartment 201, the shape and the contour of the battery compartment 201 are adapted to the contour of the battery module 100, and the battery module 100 is arranged in the battery compartment 201. Optionally, in this embodiment, the electronic device 140 on the battery protection plate 120 of the battery module 100 is disposed toward a side away from the bottom of the battery compartment 201, that is, the electronic device 140 is disposed toward the outside of the battery compartment 201, and the main control circuit board 300 is disposed adjacent to an end of the battery module 100 where the battery protection plate 120 is disposed, that is, the main control circuit board 300 is disposed adjacent to the accommodating space 1301 of the battery module 100.

The design structure can make full use of the internal space of the electronic device, the main control circuit board 300 is adjacent to the accommodating space 1301 of the battery module 100, even when the main control circuit board 300 and the battery packaging film 130 of the battery module 100 are extruded, the battery packaging film 130 and the electronic device 140 cannot be easily contacted due to the existence of the accommodating space 1301, and the purpose of preventing the battery packaging film 130 from being punctured is achieved. The design structure makes full use of the accommodating space 1301 of the battery module 100, when the main control circuit board 300 is assembled, the main control circuit board 300 can be very close to the accommodating space 1301 of the battery module 100, and due to the existence of the accommodating space 1301, the battery packaging film 130 does not need to be worried about to be punctured; the main control circuit board 300 can be intentionally pressed and embedded into a part of the accommodating space 1301, so that the internal space of the electronic device is fully utilized, the electronic device can be thinner and lighter, and more devices can be stacked inside the electronic device.

Referring to fig. 9, fig. 9 is a schematic partial structure diagram of another embodiment of an electronic device according to the present application, where the electronic device in the present embodiment includes a middle frame 200, a battery cover 400, and the battery module 100 in the above embodiment. The middle frame 200 is provided with a battery compartment 201, the shape and the contour of the battery compartment 201 are adapted to the contour of the battery module 100, and the battery module 100 is arranged in the battery compartment 201. The battery cover 400 is a rear cover of an electronic device, and includes a main board body 410 and a connecting portion 420, which are integrally formed, wherein the connecting portion 420 is connected with the side edge of the middle frame 200 in a matching manner, and the battery cover 400 is covered on the battery compartment 201; the electronic device 140 on the battery protection plate 120 of the battery module 100 is disposed toward the battery cover 400; the distance between the main plate body 410 of the battery cover 400 and the middle frame 200 is gradually decreased from one end to the other end, i.e., L5 in the figure is smaller than L6, and the end of the battery module 100 where the battery protection plate 120 is disposed toward the end where the distance between the main plate body 410 of the battery cover 400 and the middle frame 200 is smaller (the end where the distance between the main plate body 410 of the battery cover 400 and the middle frame 200 is L5).

In the electronic device structure in this embodiment, by designing a structure with different thicknesses (the distance between the main plate body of the battery cover and the middle frame gradually decreases from one end to the other end), one end with a larger thickness may be provided with a camera module 500 (the reference number 300 in the drawing may be a main control circuit board of the electronic device), the camera module 500 may not protrude from the battery cover 400, and one end provided with the battery module 100 may have a thinner thickness, in this embodiment, the accommodating space 1301 of the battery module 100 is arranged corresponding to the battery cover 400, so that even if the battery cover main plate body 410 with an inclined structure is extruded with the battery module 100, the battery packaging film 130 and the internal structure of the battery module 100 may not be damaged, thereby achieving a very good protection effect on the battery module 100, and further improving the overall reliability of the electronic device.

It should be noted that, in some other embodiments, even if the battery cover 400 does not adopt an inclined structure as in fig. 9, the receiving space 1301 of the battery module 100 may be disposed corresponding to the battery cover 400.

The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the present invention through the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An electronic device is characterized by comprising a middle frame, a battery module and a battery cover; the middle frame is provided with a battery bin, the shape and the contour of the battery bin are matched with the shape and the contour of the battery module, and the battery module is arranged in the battery bin;

the battery module comprises a battery core, a battery protection plate and a battery packaging film; the battery core comprises a first surface, a second surface and a side surface, wherein the first surface and the second surface are arranged in an opposite mode, the side surface is connected with the first surface and the second surface, the battery protection plate is arranged close to the side surface of the battery core, the distance between the battery protection plate and the first surface of the battery core is smaller than the distance between the battery protection plate and the second surface of the battery core, all electronic devices on the battery protection plate are arranged on one side, far away from the first surface of the battery core, of the battery protection plate, and the battery packaging film wraps and packages the battery core and the battery protection plate; a protective adhesive layer is coated on the electronic device of the battery protective plate; the protective adhesive layer is UV curing adhesive;

the battery cover comprises a main board body and a connecting part which are of an integrated structure, the connecting part is connected with the side edge of the middle frame in a matched mode, and the battery cover is arranged on the battery bin in a covering mode; the electronic device on the battery module battery protection board is arranged towards one side of the battery cover; the distance between the battery cover main plate body and the middle frame is gradually reduced from one end to the other end, and the end, provided with the battery protection plate, of the battery module is arranged towards the end, with the smaller distance, between the battery cover main plate body and the middle frame.

2. The electronic device according to claim 1, wherein the package opening of the battery cell is located at a side surface of the battery cell, and the battery protection board is disposed corresponding to the side surface of the battery cell where the package opening is located.

3. The electronic device of claim 2, wherein a distance between the package opening of the battery cell and the first surface is smaller than a distance between the package opening and the second surface.

4. The electronic device of claim 3, wherein the encapsulation opening is disposed proximate to the first surface.

5. The electronic device according to claim 4, wherein the battery protection board comprises a first carrying surface, a second carrying surface and a mounting surface connecting the first carrying surface and the second carrying surface, the first carrying surface and the second carrying surface are opposite to each other, the electronic device is fixedly arranged on the first carrying surface, and the second carrying surface is coplanar with the first surface of the battery core; the mounting surface supports against the side surface of the battery cell.

6. The electronic device of claim 1, wherein the electronic device comprises a master control circuit board; the electronic device on the battery module battery protection board is arranged towards one side of the bottom far away from the battery bin, and the main control circuit board is arranged close to one end, provided with the battery protection board, of the battery module.