CN113384005A

CN113384005A - Battery pack and electronic atomization device

Info

Publication number: CN113384005A
Application number: CN202110609756.6A
Authority: CN
Inventors: 梁志佳; 谢峥俊; 明志南; 李俊; 曾昭焕; 沈丕发
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-09-14

Abstract

The application provides a battery pack and electronic atomization device, wherein battery pack includes: a battery core and a metal sheet; be provided with utmost point ear on the electric core, utmost point ear and sheetmetal welding for derive the heat that electric core produced fast, make electric core surface ambient temperature reduce.

Description

Battery pack and electronic atomization device

Technical Field

The present disclosure relates to electronic atomization devices, and particularly to a battery assembly for an electronic atomization device and an electronic atomization device.

Background

In current electron atomizing device, electric core charging and discharge current are less, and electric core generates heat less in the use, and is not high to the temperature detection requirement of electric core and the ambient temperature requirement of electric core.

The existing electronic atomization device is low in charging speed, and generally needs more than one hour to be fully charged, so that the technical requirement for rapidly charging the battery core is more and more strong. The electric core quick charging technology is large in charging current, the heat generated by the atomizing equipment in the charging process is large, the use specification of the electric core requires that the ambient temperature cannot exceed 45 ℃, so that the original structural scheme is too high in internal ambient temperature of the electric core due to the fact that the electric core, particularly the lug of the electric core, generates large heat and the generated heat cannot be quickly dissipated, and the electric core is lowered or stopped due to the fact that the temperature is too high, and the use of the quick charging function is influenced.

Content of application

The application provides a battery pack and an electronic atomization device, which can reduce the surface ambient temperature of a battery core. The metal sheet is added on the battery core lug, and heat on the battery core lug is transferred to the shell or air around the battery core lug through the metal sheet to be scattered and guided, so that the environmental temperature on the surface of the battery core is reduced.

In order to solve the above technical problem, a first technical solution provided by the present application is: provided is a battery pack including: a battery core and a metal sheet; a lug is arranged on the battery cell; the tab is connected with the metal sheet and used for rapidly transferring heat generated by the battery cell to the shell or air around the tab of the battery cell and reducing the surface environment temperature of the battery cell.

Wherein the metal sheets are welded with the pole lugs.

Wherein, the welding position of the metal sheet and the pole ear is exposed.

The battery cell comprises a body part and a protruding part, wherein the protruding part is positioned at one end of the body part and is connected with the body part; the lug is positioned on one side of the protruding part far away from the body part, and the metal sheet is positioned on the side surface of the protruding part.

The tab comprises a first part and a second part connected with the first part; the first part is positioned on the top surface of the bulge, and the second part extends to one side of the metal sheet far away from the body part and is welded with the metal sheet.

The projection area of the metal sheet on the side surface of the bulge part is more than or equal to one half of the area of the side surface of the bulge part.

The surface of the metal sheet close to the protruding portion is in contact with the side face of the protruding portion, and the surface of the metal sheet far away from the protruding portion is an exposed surface.

The battery further comprises a shell, wherein the battery cell and the metal sheet are arranged in the shell; the housing has an opening so that air surrounding the metal sheet can interact with the outside air.

The heat dissipation layer is arranged between the metal layer and the shell, one surface of the heat dissipation layer is in contact with the metal sheet, and the other surface of the heat dissipation layer is in contact with the inner surface of the shell.

In order to solve the above technical problem, a second technical solution provided by the present application is: provided is an electronic atomization device including: an atomizer; a battery assembly for powering the atomizer, the battery assembly comprising any of the battery assemblies described above.

The beneficial effect of this application is different from prior art's condition, and the battery pack that this application provided distributes away in shell or the air through the heat transfer of sheetmetal on with electric core through welding the sheetmetal on utmost point ear for electric core surface ambient temperature reduces.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is an overall schematic view of a battery assembly provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery assembly provided in an embodiment of the present application after a housing is removed;

fig. 3 is a schematic structural diagram of a part of elements of a battery assembly provided in an embodiment of the present application;

FIG. 4 is a side view of the battery assembly of FIG. 3;

fig. 5 is a schematic structural diagram of a part of components of a battery assembly according to another embodiment of the present application;

FIG. 6 is a side view of the battery assembly of FIG. 5;

fig. 7 is a schematic structural diagram of an embodiment of an electronic atomizer according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the 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 application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, 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 inherent to such process, method, article, or apparatus.

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 application. 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.

Referring to fig. 1-7, fig. 1 is an overall schematic view of a battery assembly according to an embodiment of the present disclosure; fig. 2 is a schematic structural diagram of a battery assembly provided in an embodiment of the present application after a housing is removed; fig. 3 is a schematic structural diagram of a part of elements of a battery assembly provided in an embodiment of the present application; FIG. 4 is a side view of the battery assembly of FIG. 3; fig. 5 is a schematic structural diagram of a part of components of a battery assembly according to another embodiment of the present application; FIG. 6 is a side view of the battery assembly of FIG. 5; fig. 7 is a schematic structural diagram of an embodiment of an electronic atomizer according to the present application.

Specifically, referring to fig. 3, the battery assembly 10 includes a battery cell 12, a tab 13, and a metal sheet 14. The tab 13 is disposed on the battery cell 12, and the metal sheet 14 is connected to the tab 13 and used for rapidly dissipating heat generated by the battery cell 12.

The battery pack 10 of this application, through set up sheetmetal 14 in battery pack 10, sheetmetal 14 is connected with utmost point ear 13 for on conducting sheetmetal 14 with the heat that produces on electric core 12, and then reduce electric core 12's ambient temperature, guarantee that electric core 12 temperature is in normal operating range, in order to prevent overheated and damage electric core 12.

Specifically, the tab 13 and the metal sheet 14 may be directly attached, may be bonded together by a heat dissipating adhesive, or may be fixed together in other manners. Specifically, in the present embodiment, the tab 13 and the metal sheet 14 are welded together, and the welding surface 17 is exposed. The welding surface 17 is exposed, namely the welding surface 17 is not covered by the tab 13, the metal sheet 14 or the battery core 12 and is directly exposed in the ambient air or a heat dissipation material is arranged on the exposed welding surface 17, because the impedance of the joint of the tab 13 and the metal sheet 14 is higher, the generated heat is larger, and the welding surface 17 is exposed so as to be beneficial to quickly dissipating and guiding the heat generated by the welding surface 17.

Specifically, referring to fig. 4, in an embodiment, the battery cell 12 includes a body portion 12a and a protruding portion 12b, where the protruding portion 12b is located at one end of the body portion 12a and is connected to the body portion 12 a; the tab 13 is located on the side of the protruding portion 12b away from the main body portion 12a, for example, and is attached to the top surface of the protruding portion 12b, and the metal sheet 14 is located on the side of the protruding portion 12b, for example, is attached to the side surface of the protruding portion 12 b.

Specifically, the tab 13 is made of sheet metal, and the tab 13 includes a first portion 13a and a second portion 13b connected to the first portion 13 a; the first portion 13a is located on the top surface of the boss 12b, and the second portion 13b extends to the metal sheet 14 and is welded to the metal sheet 14. Because the heat generated by the welding surface 17 is larger than the heat generated by other parts, the welding surface 17 needs to be exposed, so that the heat generated by the welding surface 17 can be quickly dissipated.

In one embodiment, two tabs 13 are spaced apart from each other on the top surface of the protruding portion 12b, two metal sheets 14 are spaced apart from each other on the side surface of the protruding portion 12b, and the two metal sheets 14 are insulated from each other and welded to the two tabs 13, respectively. Specifically, if the metal sheet 14 is too thin, it is difficult to sufficiently absorb the heat of the tab 13, and if the metal sheet 14 is too thick, the heat of the metal sheet 14 is not easily dissipated. Preferably, the metal sheet 14 has a thickness of 2 to 4 mm; the metal sheet 14 is not limited in material and can be aluminum alloy or copper; the metal sheet 14 is not limited in shape and may be a rectangular metal sheet.

In a specific embodiment, in order to better achieve the heat dissipation effect of the battery cell 12, the metal sheet 14 may cover the surface of the protruding portion 12b in a large area. Specifically, the projected area of the metal sheet 14 on the surface of the protruding portion 12b may be larger than one half, that is, the area covered by the metal sheet 14 is larger than one half of the outer surface of the protruding portion 12b, so that the heat generated on the battery cell 12 is favorably introduced into the metal sheet 14 sufficiently, and the ambient temperature on the battery cell 12 is reduced. For example, the metal sheet 14 may cover the entire side of the boss 12 b.

Specifically, the surface of the metal sheet 14 close to the convex portion 12b contacts the side surface of the convex portion 12b, and the surface of the metal sheet 14 far from the convex portion 12b is an exposed surface. In a specific embodiment, the surface of the metal sheet 14 close to the protrusion 12b is provided with an adhesive, such as a heat conductive adhesive, which can make the metal sheet 14 adhere to the surface of the protrusion 12 b; the surface of the metal sheet 14 remote from the raised portion 12b is exposed to facilitate heat dissipation from the metal sheet 14. In another embodiment, an adhesive is first applied to the surface of the protrusion 12b adjacent to the metal sheet 14, and then the metal sheet 14 is fixedly adhered to the surface of the protrusion 12 b.

Specifically, referring to fig. 1-4, in the present embodiment, battery assembly 10 further includes a housing 11; the battery cell 12, the tab 13 and the metal sheet 14 are all arranged in the shell 11; have through-hole 11a on the shell 11, sheetmetal 14 through-hole 11a exposes, and the air relative flow in can passing through-hole 11a and shell 11 for take the thermal gas around sheetmetal 14 and the ambient air alternately, take away the heat, and then reduce electric core 12's ambient temperature.

In another embodiment, referring to fig. 5 and 6, the battery assembly 10 of the present application further includes a heat dissipation layer 16, the heat dissipation layer 16 being disposed between the metal sheet 14 and the housing 11. Specifically, a first surface of the heat dissipation layer 16 near the metal sheet 14 contacts the metal sheet 14, and a second surface of the heat dissipation layer 16 away from the metal sheet 14 contacts the inner surface of the housing 11. In one embodiment, the heat dissipation layer 16 is provided with an adhesive material adjacent to the first surface of the metal sheet 14, and the heat dissipation layer 16 is fixed to the surface of the metal sheet 14 by the adhesive material so as to assemble the housing 11 with the battery assembly 10; in another embodiment, heat dissipation layer 16 is provided with an adhesive material adjacent to the second surface of housing 11, and heat dissipation layer 16 is secured to the inner surface of housing 11 by the adhesive material to facilitate assembly of housing 11 with battery assembly 10. The adhesive substance is preferably an adhesive substance having relatively good heat dissipation properties.

Specifically, in order to enable the heat dissipation layer 16 to transfer the heat of the metal sheet 14 to the housing 11 well, the thickness of the heat dissipation layer 16 needs to be equal to or greater than the assembly distance between the metal sheet 14 and the housing 11, so that the heat dissipation layer 16 is in full contact with the metal sheet 14 and the housing 11, and the heat dissipation effect is improved. Further, the material of the heat dissipation layer 16 may be highly thermal conductive material such as graphite, carbon nanotube, metal or ceramic, and is not limited herein.

Specifically, referring to fig. 3, the battery assembly 10 further includes a temperature measuring element 15, a plug 21, and a PCB substrate 18. The metal sheet 14, the temperature measuring element 15, the plug 21 and the PCB substrate 18 together constitute a PCBA (Printed Circuit Board Assembly, where a PCB blank is subjected to SMT mounting or the entire process of DIP mounting). The temperature measuring element 15 can be a thermistor, the temperature measuring element 15 is arranged on the upper surface of the body portion 12a, the temperature measuring element 15 comprises a first pin 15a and a second pin 15b, the first pin 15a is electrically connected with the tab 13, and the second pin 15b is electrically connected with the PCB substrate 18. The temperature measuring element 15 is configured to monitor a temperature on the battery cell 10, feed back the temperature to the PCB substrate 18, and transmit the temperature to the control circuit board 19 (see fig. 2) through the PCB substrate 18, where the control circuit board 19 controls charging of the battery cell 12 according to the temperature fed back by the temperature measuring element 15, so as to prevent the battery cell 12 from being damaged by overheating, for example, reducing charging power or disconnecting a charging circuit; the plug 21 is disposed on a side close to the protruding portion 12b and away from the main body portion 12a, and one end of the plug 21 is electrically connected to the PCB substrate 18 and the other end is connected to the control circuit board 19. Specifically, the battery cell 12 is electrically connected to the control circuit board 19 through the PCB substrate 18 and the plug 21, and the control circuit board controls the battery cell 12 to supply power to an external device, for example, to supply power to the atomizer 40 (see fig. 7), or the control circuit board 19 controls an external circuit to charge the battery cell 12.

Specifically, referring to fig. 2, the battery assembly 10 of the present application further includes a bracket 20, and the battery cell 12 is disposed on the bracket 20; specifically, the support 20 has a through hole, and the battery cell 12 is inserted into the through hole, so that the first surface and the second surface of the battery cell 12 opposite to each other are completely exposed. In one embodiment, the bracket 20 further includes a mounting groove spaced apart from the through hole, the battery cell 12 is embedded in the through hole, and the control circuit board 19 is disposed in the mounting groove. One end of the bracket 20 is a connecting portion, and an electrode is disposed on the connecting portion and used for connecting the atomizer 40.

Specifically, referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the electronic atomizer according to the present application, and specifically, the electronic atomizer 50 includes an atomizer 40 and a battery assembly 10. Wherein the battery assembly 10 is used for supplying power to the atomizer 40, and the battery assembly 10 includes the battery assembly 10 shown in any one of the embodiments of fig. 1 to 6.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A battery assembly for an electronic atomizer device, comprising:

the battery cell is provided with a lug;

and the metal sheet is connected with the lug and used for dissipating and guiding heat generated by the battery core.

2. The battery assembly of claim 1, wherein the metal sheet is welded to the tab.

3. The battery assembly of claim 2, wherein the welding locations of the metal sheets and the tabs are exposed.

4. The battery assembly of claim 3, wherein the cell comprises a body portion and a protrusion portion at one end of the body portion and connected to the body portion;

the tab is located on one side of the protruding portion away from the body portion, and the metal sheet is located on the side face of the protruding portion.

5. The battery assembly of claim 4, wherein the tab includes a first portion and a second portion connected to the first portion;

the first portion is located on the top surface of the protruding portion, and the second portion extends to one side of the metal sheet away from the body portion and is welded with the metal sheet.

6. The battery pack according to claim 4 or 5, wherein a projected area of the metal sheet on the side surface of the protruding portion is equal to or larger than half of the area of the side surface of the protruding portion.

7. The battery pack of claim 6, wherein the surface of the metal sheet near the raised portion is in contact with the side of the raised portion, and the surface of the metal sheet away from the raised portion is exposed.

8. The battery assembly of claim 7, further comprising a housing, the cell and the metal sheet being disposed within the housing; the housing has an opening so that air surrounding the metal sheet can interact with outside air.

9. The battery pack of claim 6, further comprising a heat sink layer disposed between the metal layer and the housing, one side of the heat sink layer being in contact with the metal sheet and the other side of the heat sink layer being in contact with the inner surface of the housing.

10. An electronic atomization device, comprising:

an atomizer;

a battery assembly for powering the atomizer, the battery assembly comprising the battery assembly of any of claims 1-9.