A battery assembly for electronic atomization device and electronic atomization device

Abstract

The present invention provides a battery assembly for an electronic atomization device and an electronic atomization device, wherein the battery assembly comprises: a battery cell and a circuit board, wherein the circuit board is electrically connected to the battery cell through a connecting element; and a heat isolation structure is arranged around the circuit board to isolate the heat generated by the circuit board from the battery cell. In this way, the heat transferred from the circuit board to the battery cell can be reduced, so that the ambient temperature of the battery cell surface is lower than the specification temperature, thereby not affecting the charging speed.

Description

Technical Field

[0001] The present invention relates to the field of electronic atomization devices, and in particular to a battery assembly used in electronic atomization devices and the electronic atomization device. Background Art

[0002] In existing electronic atomization devices, the charging and discharging currents of the battery cells are small, the battery cells generate little heat during use, and the temperature detection requirements for the battery cells and the ambient temperature requirements for the battery cells are not high.

[0003] Existing electronic atomization devices charge slowly, usually taking more than an hour to fully charge, so the demand for fast-charging technology for battery cells is becoming more and more urgent. Due to the large charging current, the atomization device generates a lot of heat during the charging process, and the battery cell specifications require that the ambient temperature cannot exceed 45°C. The original structural solution generates a lot of heat due to the large heat generated by the circuit board components, and the heat generated cannot be quickly dissipated, resulting in an excessively high ambient temperature inside the battery cell. The battery cell's charging current drops or terminates due to the high temperature, affecting the use of the fast-charging function. Summary of the invention

[0004] The present invention provides a battery assembly for an electronic atomization device and an electronic atomization device, which isolate a circuit board from a battery cell, reduce the heat transferred from the circuit board to the battery cell, and make the surface ambient temperature of the battery cell lower than the specification temperature so as not to affect the charging speed.

[0005] In order to solve the above technical problems, the first technical solution provided by the present invention is: to provide a battery assembly applied to an electronic atomization device, comprising: a battery cell; a circuit board electrically connected to the battery cell through a connecting element; and a heat isolation structure arranged around the circuit board to isolate the heat generated by the circuit board from the battery cell.

[0006] Wherein, the heat isolation structure at least covers two opposite surfaces of the circuit board, or is arranged around the circuit board along the axial direction of the battery assembly.

[0007] Wherein, the battery assembly also includes a bracket and a sealing cover, and the bracket and the sealing cover cooperate to form the heat isolation structure.

[0008] Wherein, the bracket includes a first accommodating groove, the circuit board is located in the first accommodating groove, and the sealing cover covers the first accommodating groove to form the heat isolation structure.

[0009] Wherein, the first accommodating groove is a blind groove; the bracket also includes a second accommodating groove spaced apart from the first accommodating groove, and a common side wall is provided between the first accommodating groove and the second accommodating groove; the battery cell is located in the second accommodating groove.

[0010] The sealing cover is located on a side of the circuit board away from the bottom of the first accommodating groove, and covers the entire port of the first accommodating groove to completely isolate the circuit board from the battery cell.

[0011] Wherein, the battery assembly further includes: a silicone cover, which is located in the first accommodating groove, between the circuit board and the sealing cover, and cooperates with the circuit board and the sealing cover to form the heat isolation structure.

[0012] The common side wall has an opening, the connecting element is a wire, one end of the wire is electrically connected to the battery core, and the other end passes through the opening and is electrically connected to the circuit board.

[0013] Wherein, the cross-sectional area of ​​the opening is less than 30% of the cross-sectional area of ​​the battery core.

[0014] The heat of the components of the circuit board close to the opening is less than the heat of the components far from the opening.

[0015] Among them, the connecting element is a metal spring embedded in the side wall of the bracket, one end of the metal spring extends into the first receiving groove and is electrically connected to the circuit board, and the other end of the metal spring extends outside the first receiving groove and is electrically connected to the battery core.

[0016] In order to solve the above technical problems, the second technical solution provided by the present invention is: to provide an electronic atomization device, comprising: an atomizer; a battery assembly, the battery assembly is used to power the atomizer, and the battery assembly includes any one of the battery assemblies described above.

[0017] The beneficial effects of the present invention are different from those of the prior art. The battery assembly provided by the present invention is equipped with a heat isolation structure around the circuit board to isolate the circuit board from the battery cell, thereby reducing the heat transferred from the circuit board to the battery cell, so that the ambient temperature of the battery cell surface is lower than the specification temperature and does not affect the charging speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 It is a schematic structural diagram of the first embodiment of the battery assembly of the present invention. ;

[0020] Figure 2 for Figure 1A cross-sectional view of the first embodiment of the battery assembly shown in the AA direction;

[0021] Figure 3 for Figure 1 A cross-sectional view of the second embodiment of the battery assembly shown in the AA direction;

[0022] Figure 4 It is a schematic structural diagram of an embodiment of the electronic atomization device of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figure 1 and Figure 2 , Figure 1It is a schematic structural diagram of the first embodiment of the battery assembly of the present invention; the battery assembly shown in this embodiment is applied to an electronic atomization device. Figure 2 for Figure 1 A cross-sectional view of the first embodiment of the battery assembly taken along the AA direction is shown. Specifically, the battery assembly includes a battery cell 11 and a circuit board 10, wherein the circuit board 10 is connected to the battery cell 11 via a connecting element 12. Specifically, the connecting element 12 is an electrode lead extending from the battery cell 11. In a specific embodiment, an electrode ear is provided on the battery cell 11, and a soldering pad is provided on the circuit board 10. One end of the connecting element 12 is connected to the electrode ear to connect to the battery cell 11, and the other end is connected to the soldering pad, and then connected to the circuit board 10, so that the battery cell 11 is electrically connected to the circuit board 10.

[0027] In order to reduce the heat transferred from the circuit board 10 to the battery cell 11, so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature and thus does not affect the charging speed, the battery assembly of the present application further provides a heat isolation structure around the circuit board 10, so that the circuit board 10 and the battery cell 11 are thermally isolated, thereby reducing the heat transferred from the circuit board 10 to the battery cell 11, so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature and thus does not affect the charging speed. In a specific embodiment, the heat isolation structure covers at least two opposite surfaces of the circuit board 10, or is provided around the circuit board 10 along the axial direction L of the battery assembly.

[0028] Specifically, please combine Figure 2The battery assembly also includes a bracket 15 and a sealing cover 14, and the bracket 15 and the sealing cover 14 cooperate to form a heat isolation structure. Specifically, the bracket 15 includes a first accommodating groove 13 and a second accommodating groove 16. The circuit board 10 is located in the first accommodating groove 13, and the battery cell 11 is located in the second accommodating groove 16. The first accommodating groove 13 is a blind groove or a blind hole, which includes a bottom wall 131 and an annular side wall, and the annular side wall includes a first side wall 132 and a second side wall 133 that are arranged opposite to each other, and the first side wall 132 is arranged close to the second accommodating groove 16. The sealing cover 14 covers the first accommodating groove 13 on the opposite side of the bottom wall 131 of the first accommodating groove 13, that is, the sealing cover 14 covers the first accommodating groove 13 on the side of the circuit board 10 away from the bottom wall 131 of the first accommodating groove 13 to form a heat isolation structure, so as to encapsulate the circuit board 10 in the first accommodating groove 13. Specifically, the sealing cover 14, the bottom wall 131 of the first accommodating groove 13, and the annular side wall together form a heat isolation structure, which is arranged around the circuit board 10, and can wrap the circuit board 10, thereby isolating the circuit board 10 from the battery cell 11, thereby reducing the heat transferred from the circuit board 10 to the battery cell 11, so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature and does not affect the charging speed. Furthermore, the sealing cover 14 covers the entire port of the first accommodating groove 13 on the side of the circuit board 10 away from the bottom wall 131 of the first accommodating groove 13, thereby completely isolating the circuit board 10 from the battery cell 11, so that heat isolation is formed between the circuit board 10 and the battery cell 11.

[0029] Furthermore, the battery assembly further includes a silicone cover 17, which is located in the first receiving groove 13 and between the circuit board 10 and the sealing cover 14. The silicone cover 17 can enhance the sealing of the heat isolation structure, cooperate with the first receiving groove 13 and the sealing cover 14 to form a heat isolation structure to encapsulate the circuit board 10, and further prevent the heat generated by the circuit board 10 from being dissipated to the battery cell 11. The size and thickness of the silicone cover 17 are not limited. In one embodiment, the silicone cover 17 covers the entire circuit board 10 and the thickness is equal to the distance between the circuit board 10 and the sealing cover 14.

[0030] Furthermore, there is a common side wall between the first accommodating groove 13 and the second accommodating groove 16, and the common side wall is the first side wall 132 of the first accommodating groove 13. The common side wall (first side wall 132) has an opening 18, and the opening 18 can be a notch located on the common side wall, and can also be a through hole penetrating the common side wall. The connecting element 12 is a wire, one end of which is electrically connected to the battery cell 11, and the other end passes through the opening 18 and is electrically connected to the circuit board 10.

[0031] In one embodiment, in order to reduce the heat transferred from the circuit board 10 to the battery cell 11 so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature and does not affect the charging speed, the cross-sectional area of ​​the opening 18 is less than 30% of the cross-sectional area of ​​the battery cell 11. For example, the cross-sectional area of ​​the opening 18 is less than 15% of the cross-sectional area of ​​the battery cell 11.

[0032] In another embodiment, in order to reduce the heat transferred from the circuit board 10 to the battery cell 11 so that the ambient temperature on the surface of the battery cell 11 is lower than the specification temperature and does not affect the charging speed, the heat of the components of the circuit board 10 close to the opening 18 is less than the heat of the components far from the opening 18, that is, the side of the components of the circuit board 10 with less heat is arranged close to the opening 18, and the side with more heat is arranged close to the second side wall 133.

[0033] The battery assembly described in this embodiment forms a heat isolation structure through the bottom wall 131, the first side wall 132 and the second side wall 133 of the first receiving groove 13 in cooperation with the silicone cover 17 and the sealing cover 14, and semi-encapsulates the circuit board 10 in the first receiving groove 13. Among them, the first side wall 132 has an opening 18, and the connecting element 12 passes through the opening 18 to connect the battery cell 11 with the circuit board 10, so as to reduce the heat transferred from the circuit board 10 to the battery cell 11, so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature and does not affect the charging speed.

[0034] See also Figure 3 , Figure 3 for Figure 1 The sectional view of the second embodiment of the battery assembly along the AA direction is shown in FIG. Figure 2 Compared with the embodiment shown in the figure, the difference is that in this embodiment, the first side wall 132 of the first receiving groove 13 is not provided with an opening 18. Specifically, the bottom wall 131 and the annular side wall of the first receiving groove 13 cooperate with the silicone cover 17 and the sealing cover 14 to form a heat isolation structure, and the circuit board 10 is completely encapsulated in the first receiving groove 13. In this embodiment, in order to achieve electrical connection between the circuit board 10 and the battery cell 11, the connecting element 12 is a metal spring embedded in the side wall of the bracket 15. Specifically, as shown in FIG. Figure 3 As shown, the connecting element 12 may be embedded in the bottom wall 131 of the first receiving groove 13 . Specifically, the metal spring sheet may be disposed in the bottom wall 131 of the first receiving groove 13 by injection molding.

[0035] One end of the metal spring extends into the first receiving groove 13 to be electrically connected to the circuit board 10, and the other end extends outside the first receiving groove 13 to be electrically connected to the battery cell 11. Specifically, the other end of the metal spring can directly extend into the second receiving groove 16 to be electrically connected to the battery cell 11; or the other end of the metal spring can also extend between the first receiving groove 13 and the second receiving groove 16 to be connected to the exposed electrode ear of the battery cell 11, and the specific details are not limited. Since the metal spring is elastic and the main body is embedded in the side wall of the bracket 15, the assembly process of the battery assembly can be simplified by elastically abutting the end of the metal spring with the electrode ear of the battery cell 11 or the pad on the circuit board 10.

[0036] The battery assembly described in this embodiment forms a heat isolation structure through the bottom wall 131, the first side wall 132 and the second side wall 133 of the first receiving groove 13 in cooperation with the silicone cover 17 and the sealing cover 14, and completely encapsulates the circuit board 10 in the first receiving groove 13. Among them, the connecting element 12 is a metal spring embedded in the side wall of the bracket 15, one end of the metal spring extends into the first receiving groove 13 to be electrically connected to the circuit board 10, and the other end extends outside the first receiving groove 13 to be electrically connected to the battery cell 11. In this way, the heat transferred from the circuit board 10 to the battery cell 11 can be reduced, so that the surface ambient temperature of the battery cell 11 is lower than the specification temperature, thereby not affecting the charging speed.

[0037] See also Figure 4 , is a schematic diagram of the structure of an embodiment of the electronic atomization device of the present invention. Specifically, the electronic atomization device 100 includes an atomizer 200 and a battery assembly 300. The battery assembly 300 is used to supply power to the atomizer 200. The battery assembly 300 includes the above Figures 1 to 3 The battery assembly 300 of any embodiment is shown.

[0038] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery assembly for an electronic atomization device, characterized in that: include: A battery cell, wherein the battery cell is provided with an electrode ear; A circuit board, wherein a solder pad is provided on the circuit board, one end of a connecting element is connected to an electrode ear, and the other end is connected to the solder pad, so as to electrically connect the circuit board with the battery cell; A heat isolation structure is arranged around the circuit board to isolate the heat generated by the circuit board from the battery core; Wherein, the heat isolation structure comprises a bracket and a sealing cover, and the bracket and the sealing cover cooperate to form the heat isolation structure; Wherein, the bracket includes a first accommodating groove, and the circuit board is located in the first accommodating groove; the sealing cover is located on a side of the circuit board away from the bottom of the first accommodating groove, and covers the entire port of the first accommodating groove to completely isolate the circuit board from the battery cell; Among them, it also includes: A silicone cover, wherein the silicone cover is located in the first receiving groove, between the circuit board and the sealing cover, and cooperates with the first receiving groove and the sealing cover to form the heat isolation structure.

2. The battery assembly according to claim 1, characterized in that: The heat isolation structure at least covers two opposite surfaces of the circuit board, or is arranged around the circuit board along the axial direction of the battery assembly.

3. The battery assembly according to claim 2, characterized in that: The first accommodating groove is a blind groove; the bracket also includes a second accommodating groove spaced apart from the first accommodating groove, and a common side wall is provided between the first accommodating groove and the second accommodating groove; the battery cell is located in the second accommodating groove.

4. The battery assembly according to claim 3, characterized in that: The common side wall has an opening, and the connecting element is a wire, one end of the wire is electrically connected to the battery core, and the other end passes through the opening and is electrically connected to the circuit board.

5. The battery assembly according to claim 4, characterized in that: The cross-sectional area of ​​the opening is less than 30% of the cross-sectional area of ​​the battery core.

6. The battery assembly according to claim 4, characterized in that: The heat of the components of the circuit board close to the opening is less than the heat of the components far from the opening.

7. The battery assembly according to any one of claims 3 to 6, characterized in that: The connecting element is a metal spring embedded in the side wall of the bracket, one end of the metal spring extends into the first receiving groove to be electrically connected to the circuit board, and the other end of the metal spring extends outside the first receiving groove to be electrically connected to the battery core.

8. An electronic atomization device, characterized in that: include: Nebulizer; A battery assembly, the battery assembly is used to power the atomizer, and the battery assembly includes the battery assembly described in any one of claims 1 to 7 above.

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