Battery and electronic equipment

Abstract

The utility model relates to the technical field of batteries, and provides a battery and electronic equipment, the battery is provided with a circuit board, an insulating part and a battery cell, the battery cell is provided with two tabs, the two tabs are arranged at intervals in the width direction of the tabs, the battery cell and the circuit board are arranged at intervals in the length direction of the tabs, and the insulating part is located between the circuit board and the battery cell. The orthographic projection of the circuit board on the plane where the insulating part is located is covered by the insulating part, and at least part of the orthographic projection of the tab on the plane where the insulating part is located is covered by the insulating part; the circuit board is provided with tab connecting parts, the tab connecting parts and the tabs are arranged in a one-to-one correspondence mode, connecting holes penetrating through the insulating part are formed in the insulating part, and the tabs penetrate through the connecting holes and are electrically connected with the circuit board through the tab connecting parts. Through the structural arrangement, the heat dissipation effect and the insulation performance of the battery are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electronic device. Background Art

[0002] The battery modules of mobile phones and laptops are formed by welding multiple single cells to a protection board. When multiple single cells are connected in groups, the top of the cells needs to be insulated to prevent the aluminum layer of the aluminum-plastic film on the top of the cells from being connected to the protection board and causing electrical corrosion. In the prior art, insulating tape is often pasted on the top of the cells. The insulating tape covers the top seal of the cells.

[0003] However, the battery cells and protection boards generate heat during use, and the connection between the insulating tape and the battery cells results in poor heat dissipation of the battery module. Utility Model Content

[0004] The present application provides a battery and an electronic device, which can improve the heat dissipation effect of the battery.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a battery, comprising a circuit board, an insulating member, and a battery cell, wherein the battery cell has two tabs, the two tabs are spaced apart along the width direction of the tabs, the battery cell and the circuit board are spaced apart along the length direction of the tabs, at least part of the insulating member is located between the battery cell and the circuit board, the orthographic projection of the circuit board on the surface where at least part of the insulating member is located is covered by the insulating member, and the orthographic projection of the tab on the surface where the insulating member is located is at least partly covered by the insulating member;

[0007] The circuit board has at least two tab connecting parts, the tab connecting parts and the tabs are arranged in one-to-one correspondence, the insulating member is provided with a connecting hole penetrating the insulating member, the tab passes through the connecting hole, and is electrically connected to the circuit board through the corresponding tab connecting part.

[0008] As a possible implementation manner, the insulating member includes a first part and a second part, and the first part and the second part are arranged in sequence along the length direction of the pole lug;

[0009] Along the thickness direction of the tab, the battery cell and the circuit board are located on both sides of the insulating member, and the first portion of the insulating member is in contact with the circuit board;

[0010] Along the length direction of the pole ear, the second portion extends to one end of the battery cell facing the circuit board;

[0011] The connecting hole is located in the first portion.

[0012] As a possible implementation manner, the insulating member further includes a third portion, and along the length direction of the pole lug, the third portion is connected between the first portion and the second portion;

[0013] The battery core and the circuit board are respectively located on two sides of the third portion in a thickness direction.

[0014] As a possible implementation manner, an extension direction of the first portion and an extension direction of the second portion are parallel to each other, and both have an included angle with the extension direction of the third portion.

[0015] As a possible implementation manner, a plurality of grooves are provided on the second part, the plurality of grooves are arranged in sequence along the width direction of the pole ear, the grooves penetrate the second part along the thickness direction of the second part, and the notches of the grooves are located at the edge of the second part away from the first part;

[0016] There are a plurality of battery cells, and the plurality of battery cells are arranged in sequence along the width direction of the pole lug. Along the thickness direction of the pole lug, at least one of the grooves corresponds to the area between two adjacent battery cells.

[0017] As a possible implementation manner, the insulating member has a saddle line, and the saddle line includes a first saddle line and a second saddle line, and the first saddle line and the second saddle line both extend along the width direction of the pole ear;

[0018] The first saddle stitch line is located at the connection between the first part and the third part, and the second saddle stitch line is located at the connection between the second part and the third part.

[0019] As a possible implementation, there are at least two connecting holes, at least two connecting holes are spaced apart along the width direction of the pole ear, the first saddle line is located between adjacent connecting holes, and the edge of the connecting hole close to the second part is flush with the first saddle line.

[0020] As a possible implementation manner, the saddle stitch line includes a plurality of connection portions and a plurality of hollow portions, and the plurality of connection portions and the plurality of hollow portions are alternately arranged in sequence along the width direction of the pole lug.

[0021] As a possible implementation manner, along the width direction of the pole lug, the extension length of the hollow portion is less than or equal to the extension length of the connecting portion; and / or,

[0022] The extension length of the connecting portion is less than or equal to 6 mm.

[0023] As a possible implementation manner, along the width direction of the pole ear, there is a distance between the first seam line and the edge of the connecting hole; and / or,

[0024] The spacing is greater than or equal to 4 mm.

[0025] As a possible implementation manner, along the thickness direction of the tab, the orthographic projection of the circuit board on the plane where the first part is located is covered by the insulating member.

[0026] As a possible implementation manner, along the thickness direction of the tab, the orthographic projection of the tab connection portion on the surface where the circuit board is located is located within the connection hole.

[0027] The battery cells and circuit boards in the battery provided by the present application are arranged at intervals along the length direction of the pole ear, which increases the spacing between the battery cells and the circuit board, increases the space for heat dissipation, and enhances the heat dissipation effect of the battery cells. At the same time, an insulating member is arranged between the battery cells and the circuit board, and the insulating member is used to insulate and isolate the battery cells and the circuit board, thereby improving the insulation performance of the battery. In addition, a connecting hole is arranged on the insulating member, and the pole ear passes through the connecting hole and is electrically connected to the circuit board through the pole ear connecting part. The setting of the connecting hole directly exposes the connection between the pole ear connecting part and the pole ear, thereby improving the heat dissipation effect between the pole ear and the pole ear connecting part.

[0028] In a second aspect, the present application provides an electronic device, comprising an electronic component and a battery as described in any of the aforementioned embodiments, wherein the electronic component and the battery are electrically connected.

[0029] Since the electronic device provided in the present application includes the battery in any of the aforementioned embodiments, the safety of the electronic device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 Schematic diagram of the battery provided in the embodiment of the present application Figure 1 ;

[0032] Figure 2 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of a battery cell in a battery provided in an embodiment of the present application;

[0034] Figure 4 A side view of a battery provided in an embodiment of the present application;

[0035] Figure 5 for Figure 4 A partial enlarged view of part A;

[0036] Figure 6 A front view of an insulating member in a battery provided by an embodiment of the present application;

[0037] Figure 7 A rear view of an insulating member in a battery provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of the structure of the saddle stitch line in the battery provided in an embodiment of the present application;

[0039] Fig. 9 A schematic projection diagram of a connection hole portion of a battery provided in an embodiment of the present application;

[0040] Fig.10 Schematic diagram of the battery provided in the embodiment of the present application Figure 2 ;

[0041] Fig.11 Schematic diagram of the protective film layer of the battery provided in the embodiment of the present application Figure 1 ;

[0042] Fig.12 Schematic diagram of the protective film layer of the battery provided in the embodiment of the present application Figure 2 .

[0043] Description of reference numerals:

[0044] 100-battery;

[0045] 110-circuit board; 111-ear connecting portion;

[0046] 120 - insulating member; 121 - connecting hole; 122 - first part; 123 - second part; 124 - third part; 125 - groove;

[0047] 126-saddle stitching line; 1261-first saddle stitching line; 1262-second saddle stitching line; 1263-connecting part; 1264-hollow part;

[0048] 130-battery core; 131-ear; 132-ear glue; 133-top sealing groove;

[0049] 140- tape;

[0050] 150-Protective film layer. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] The battery modules of mobile phones and laptops are formed by welding multiple single cells to a protection board. When multiple single cells are connected in groups, the top of the cells needs to be insulated to prevent the aluminum layer of the aluminum-plastic film on the top of the cells from being connected to the protection board and causing electrical corrosion. In the prior art, insulating tape is often pasted on the top of the cells. The insulating tape covers the top seal of the cells.

[0053] However, the battery cells and protection boards generate heat during use, and the connection between the insulating tape and the battery cells results in poor heat dissipation of the battery module.

[0054] In order to overcome the defects in the prior art, the present application provides a battery and an electronic device, wherein the battery has a circuit board, an insulating member and a battery cell, wherein the battery cell has two tabs, the two tabs are arranged at intervals along the width direction of the battery cell, the battery cell and the circuit board are arranged at intervals along the length direction of the tabs, the insulating member is located between the circuit board and the battery cell, the orthographic projection of the circuit board on the surface where the insulating member is located is at least partially covered by the insulating member, and the orthographic projection of the tab on the surface where the insulating member is located is covered by the insulating member; the circuit board has a tab connection portion, the insulating member is provided with a connection hole penetrating the insulating member, the tab passes through the connection hole, and is electrically connected to the circuit board through the tab connection portion. Through such a structural arrangement, the heat dissipation effect and insulation performance of the battery are improved.

[0055] The content of the utility model will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.

[0056] Figure 1 Schematic diagram of the battery provided in the embodiment of the present application Figure 1 ; Figure 2 A schematic diagram of the structure of a battery provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a battery cell in a battery provided in an embodiment of the present application; Figure 4 A side view of a battery provided in an embodiment of the present application; Figure 5 for Figure 4 A partial enlarged view of part A; Figure 6 A front view of an insulating member in a battery provided by an embodiment of the present application; Figure 7A rear view of an insulating member in a battery provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of the saddle stitch line in the battery provided in an embodiment of the present application; Fig. 9 A schematic projection diagram of a connection hole portion of a battery provided in an embodiment of the present application; Fig.10 Schematic diagram of the battery provided in the embodiment of the present application Figure 2 ; Fig.11 Schematic diagram of the protective film layer of the battery provided in the embodiment of the present application Figure 1 ; Fig.12 Schematic diagram of the protective film layer of the battery provided in the embodiment of the present application Figure 2 .

[0057] like Figure 1-Figure 12 As shown, this embodiment provides a battery 100, including a circuit board 110, an insulating member 120 and a battery cell 130, the battery cell 130 having two pole ears 131, the two pole ears 131 are arranged at intervals along the width direction of the pole ears 131, the battery cell 130 and the circuit board 110 are arranged at intervals along the length direction of the pole ears 131, at least part of the insulating member 120 is located between the battery cell 130 and the circuit board 110, the orthographic projection of the circuit board 110 on the surface where the insulating member 120 is located is at least partially covered by the insulating member 120, and the orthographic projection of the pole ears 131 on the surface where the insulating member 120 is located is covered by the insulating member 120.

[0058] The circuit board 110 has at least two tab connections 111 , and the tab connections 111 and the tabs 131 are arranged in one-to-one correspondence. The insulating member 120 is provided with a connection hole 121 that penetrates the insulating member 120 . The tabs 131 pass through the connection hole 121 and are electrically connected to the circuit board 110 through the corresponding tab connections 111 .

[0059] In this embodiment, the battery cell 130 and the circuit board 110 are arranged at intervals along the length direction of the pole lug 131, which increases the distance between the battery cell 130 and the circuit board 110, increases the space for heat dissipation, and enhances the heat dissipation effect of the battery cell 130. At the same time, the insulating member 120 is arranged between the battery cell 130 and the circuit board 110, and the battery cell 130 and the circuit board 110 are insulated and isolated by the insulating member 120, thereby improving the insulation performance of the battery 100. In addition, the insulating member 120 is provided with a connection hole 121, and the pole lug 131 passes through the connection hole 121 and is electrically connected to the circuit board 110 through the pole lug connection part 111. The setting of the connection hole 121 directly exposes the connection between the pole lug connection part 111 and the pole lug 131, thereby improving the heat dissipation effect between the pole lug 131 and the pole lug connection part 111.

[0060] It can be understood that the battery cell 130 in this embodiment can be a wound battery cell 130 or a stacked battery cell 130. The battery cell 130 has two tabs 131, one of the two tabs 131 serves as the positive tab of the battery cell 130, and the other serves as the negative tab of the battery cell 130. The two tabs 131 are arranged at intervals along the width direction (X direction) of the tab 131. The battery cell 130 is packaged by an aluminum-plastic film, and along the length direction (Z direction) of the tab 131, the top of the battery cell 130 has a top seal, and the battery cell 130 has side seals on both sides of the width direction (X direction) of the tab 131. The side seals on both sides are bent along the thickness direction (Y direction) of the tab 131, and the side seals and the top seals form a top seal groove 133 at the top of the tab 131. A tab glue 132 is attached to one side of the tab 131 near the top seal groove 133, which can improve the sealing and insulation of the battery cell 130. In the length direction (Y direction) of the tab 131, the depth (A1) of the top seal groove 133 is 2.5-3.5 mm. The height (A2) of the tab glue 132 is 0.5-2 mm.

[0061] The battery cell 130 and the circuit board 110 are arranged at intervals along the length direction (Z direction) of the pole tab 131, and part of the insulating member 120 is located between the battery cell 130 and the circuit board 110. As a possible implementation, along the length direction (Z direction) of the pole tab 131, the insulating member 120 is located between the circuit board 110 and the battery cell 130, that is, along the length direction (Z direction) of the pole tab 131, the circuit board 110 and the battery cell 130 are located on opposite sides of the insulating member 120, and the insulating member 120 separates the circuit board 110 and the battery cell 130 along the length direction (Z direction) of the pole tab 131. At this time, the orthographic projection of the circuit board 110 on the surface where the insulating member 120 is located is covered by the insulating member 120, and the orthographic projection of the pole tab 131 on the surface where the insulating member 120 is located is covered by the insulating member 120. The circuit board 110 is provided with a tab connection portion 111, and the tab connection portion 111 and the tab 131 are provided correspondingly. The insulating member 120 is provided with a connection hole 121, and the connection hole 121 penetrates the insulating member 120. The tab 131 passes through the connection hole 121 and is connected to the corresponding tab connection portion 111, so as to realize the electrical connection between the battery cell 130 and the circuit board 110. In this embodiment, the insulating member 120 isolates the circuit board 110 and the battery cell 130, increases the heat dissipation space, and improves the heat dissipation effect of the battery 100.

[0062] Further, such as Figure 5As shown, along the length direction (Z direction) of the pole lug 131, the insulating member 120 is partially located between the circuit board 110 and the battery cell 130, and along the thickness direction (Y direction) of the pole lug 131, the orthographic projection of the circuit board 110 on the surface where the insulating member 120 is located is covered by the insulating member 120, and the orthographic projection of the pole lug 131 on the surface where the insulating member 120 is located is covered by the insulating member 120. In this way, the relative area between the insulating member 120 and the circuit board 110 and the pole lug 131 is increased, and the insulation effect between the battery cell 130 and the circuit board 110 is improved. In addition, the connecting hole on the insulating member 120 penetrates the insulating member 120 along the thickness direction (Y direction) of the pole lug 131, and the pole lug 131 passes through the connecting hole 121 and is connected to the pole lug connecting portion 111 on the circuit board 110, thereby realizing electrical connection between the battery cell 130 and the circuit board 110. In this embodiment, the connection hole 121 exposes the connection between the tab connection portion 111 and the tab 131 , thereby increasing the heat exchange between the tab connection portion 111 and the tab 131 and the external environment, thereby improving the heat dissipation effect of the battery 100 while meeting the insulation requirements of the battery 100 .

[0063] It should be noted that the tab connection portion 111 and the tab 131 in this embodiment are arranged correspondingly so that a current loop is formed after the battery cell 130 and the circuit board 110 are connected. In addition, the number of the connection holes 121 can be one or more, and it is only necessary to ensure that the tab 131 can pass through the connection hole 121 and connect with the corresponding tab connection portion 111.

[0064] In some specific embodiments, the tab connection portion 111 may be a metal conductor, such as a nickel block, a copper block, an aluminum block, etc. The metal conductor is welded on the circuit board 110, and the tab 131 passes through the connection hole 121 and is welded to the tab connection portion 111, so that the battery cell 130 and the circuit board 110 can be electrically connected. The tab connection portion 111 often uses a metal conductor with a square structure.

[0065] As a possible implementation, along the thickness direction of the tab 131, the orthographic projection of the tab connection portion 111 on the surface of the circuit board 110 is located in the connection hole 121. It can be understood that the structures of the tab connection portion 111 and the connection hole 121 match each other.

[0066] The orthographic projection of the tab connection portion 111 on the surface where the circuit board 110 is located is located in the connection hole 121, that is, the projection of the tab connection portion 111 and the connection hole 121 can completely overlap, or there is a gap between the projection of the tab connection portion 111 and the edge of the connection hole 121. Accordingly, the structural dimensions of the tab connection portion 111 are the same as those of the connection hole 121, or the structural dimensions of the tab connection portion 111 are smaller than those of the connection hole 121.

[0067] In some specific embodiments, the width (D) of the pole lug 131 is 6-8 mm; the width (N) of the pole lug connection portion 111 along the width direction (X direction) of the pole lug 131 is greater than or equal to the width of the pole lug 131, for example, the width (N) of the pole lug connection portion 111 can be 7-9 mm, so that the welding area formed by the connection between the pole lug 131 and the pole lug connection portion 111 is increased, which can ensure that the pole lug 131 and the pole lug connection portion 111 maintain a relatively stable connection. The length (M) of the pole lug connection portion 111 along the length direction (Z direction) of the pole lug 131 is 3-4 mm. Exemplarily, when the width of the pole lug 131 is 6 mm, N = 7 mm, M = 3 mm or M = 4 mm of the pole lug connection portion 111; or N = 9 mm, M = 3 mm or M = 4 mm of the pole lug connection portion 111. Of course, the structural dimensions of the pole lug connection portion 111 are not limited to the above-listed combinations.

[0068] It is understandable that Fig. 9 As shown, the structural dimension of the connection hole 121 is equal to or greater than the structural dimension of the tab connection portion 111, and the orthographic projection of the tab connection portion 111 on the circuit board 110 falls into the connection hole 121. At this time, along the width direction (X direction) of the tab 131, the width (L) of the connection hole 121 is greater than or equal to the width (N) of the tab connection portion 111, and along the length direction of the tab 131, the length (K) of the connection hole 121 is greater than or equal to the length (M) of the tab connection portion 111. In the specific implementation process, the structural dimension of the connection hole 121 can be selected in combination with actual conditions, and this embodiment does not make specific restrictions on this. It is not difficult to understand that the structural dimension of the connection hole 121 is greater than the structural dimension of the tab connection portion 111, and the tab connection portion 111 can be completely exposed along the thickness direction of the tab 131, which is convenient for welding the tab connection portion 111 and the tab 131, while increasing the contact between the tab connection portion 111 and the external environment, thereby improving the heat dissipation effect of the battery 100.

[0069] In addition, the thickness of the insulating member 120 in this embodiment along the thickness direction (Y direction) of the tab 131 is 0.5-2 mm.

[0070] In some embodiments, Figure 4 , Figure 5-Figure 7 As shown, the insulating member 120 includes a first part 122 and a second part 123, and the first part 122 and the second part 123 are arranged in sequence along the length direction of the pole ear 131; along the thickness direction of the pole ear 131, the battery cell 130 and the circuit board 110 are located on opposite sides of the insulating member 120, and the first part 122 of the insulating member 120 is in contact with the circuit board 110; along the length direction (Z direction) of the pole ear 131, the second part 123 extends to one end of the battery cell 130 facing the circuit board 110; the connecting hole 121 is located in the first part 122.

[0071] In this embodiment, the insulating member 120 is located between the battery cell 130 and the circuit board 110 along the thickness direction (Y direction) of the pole lug 131. Specifically, the first portion 122 of the insulating member 120 is located on one side of the pole lug connecting portion 111 on the circuit board 110 along the thickness direction (Y direction) of the pole lug 131. The first portion 122 and the circuit board 110 are opposite to each other along the thickness direction (Y direction) of the pole lug 131. The connecting hole 121 is located in the first portion 122. The connecting hole 121 and the pole lug connecting portion 111 correspond to each other. In this way, the orthographic projection of the pole lug connecting portion 111 on the circuit board 110 can be located in the connecting hole 121.

[0072] The second portion 123 of the insulating member 120 is opposite to the battery cell 130 along the thickness direction (Y direction) of the pole ear 131, and the second portion 123 is located on the side of the pole ear 131 away from the pole ear connecting portion 111 along the thickness direction (Y direction) of the pole ear 131. In this way, the insulating member 120 can form a better insulation isolation between the battery cell 130 and the circuit board 110 along the thickness direction (Y direction) of the pole ear 131 and the length direction (Z direction) of the pole ear 131, thereby improving the safety of the battery 100 and extending the service life of the battery 100.

[0073] Along the length direction (Z direction) of the tab 131, the second portion 123 extends to one end of the battery cell 130 facing the circuit board 110. That is, along the length direction (Z direction) of the tab 131, the edge of the second portion 123 may be located in the top seal groove 133 of the battery cell 130. In some embodiments, along the length direction (Z direction) of the tab 131, the edge of the second portion 123 may abut against the surface of the battery cell 130 in this direction.

[0074] Further, such as Figure 4 , Figure 5-Figure 7 As shown, the insulating member 120 further includes a third portion 124, which is connected between the first portion 122 and the second portion 123 along the length direction (Z direction) of the tab 131; the battery cell 130 and the circuit board 110 are respectively located on opposite sides of the thickness direction of the third portion 124. In this way, the insulation effect between the battery cell 130 and the circuit board 110 can be improved by the third portion 124 of the insulating member 120.

[0075] It can be understood that the third portion 124 blocks the circuit board 110 and the battery cell 130 along the length direction of the tab 131, preventing the circuit board 110 and the battery cell 130 from being connected along the thickness direction of the tab 131, thereby improving the insulation of the battery 100. Furthermore, the provision of the third portion 124 increases the heat conduction area between the circuit board 110 and the insulating member 120, thereby improving the heat dissipation performance of the battery 100.

[0076] For example, the third portion 124 may be a plane or a curved surface, and it is only necessary to ensure that the third portion 124 can achieve insulation isolation between the circuit board 110 and the battery cell 130 along the length direction of the tab 131 .

[0077] On the basis of the above-mentioned embodiment, the extension direction of the first portion 122 and the extension direction of the second portion 123 are parallel to each other, and both have an included angle with the extension direction of the third portion 124 .

[0078] like Figure 4 As shown, in this embodiment, the first part 122 is opposite to the circuit board 110, and the extension direction of the first part 122 is the same as or parallel to the extension direction of the circuit board 110. The second part 123 is opposite to the pole lug 131, and the extension direction of the second part 123 is the same as or parallel to the extension direction of the pole lug 131. The pole lug 131 of the battery cell 130 passes through the connection hole 121 of the first part 122 and is connected to the pole lug connection part 111 on the circuit board 110. At this time, a parallel relationship is formed between the pole lug 131 and the circuit board 110. It can be understood that the first part 122 and the second part 123 are in a parallel relationship.

[0079] The third part 124 in this embodiment is connected between the first part 122 and the second part 123 along the length direction (Z direction) of the pole lug 131. Along the length direction (Z direction) of the pole lug 131, the third part 124 can be arranged obliquely or horizontally relative to at least one of the first part 122 and the second part 123. At this time, the extension direction of the third part 124 and the extension directions of the first part 122 and the second part 123 have an angle. For example, when the third part 124 is arranged horizontally relative to the first part 122 along the thickness direction (Y direction) of the pole lug 131, the angle between the extension direction of the third part 124 and the extension direction of the first part 122 is 90°. Alternatively, when the third part 124 is arranged horizontally relative to the second part 123 along the thickness direction (Y direction) of the pole lug 131, the angle between the extension direction of the third part 124 and the extension direction of the second part 123 is 90°. Of course, when the third portion 124 is tilted relative to the thickness direction (Y direction) of the tab 131, the angle between the extension direction of the third portion 124 and the extension direction of the second portion 123 can be an obtuse angle or an acute angle. This embodiment does not specifically limit the size of the angle between the extension direction of the first portion 122 and the second portion 123 and the extension direction of the third portion 124.

[0080] In some embodiments, a plurality of grooves 125 are provided on the second portion 123, the plurality of grooves 125 are arranged in sequence along the width direction of the pole ear 131, the grooves 125 penetrate the second portion 123 along the thickness direction of the second portion 123, and the notches of the grooves 125 are located at the edge of the second portion 123 away from the first portion 122; there are a plurality of battery cells 130, and the plurality of battery cells 130 are arranged in sequence along the width direction of the pole ear 131, and along the thickness direction of the pole ear 131, at least one groove 125 corresponds to the regional position between two adjacent battery cells 130.

[0081] In this embodiment, the insulating member 120 has a first portion 122, a second portion 123 and a third portion 124, and the third portion 124 is located between the circuit board 110 and the battery cell 130 along the length direction (Z direction) of the pole ear 131. In this way, the insulating member 120 can be bent to form the corresponding first portion 122, second portion 123 and third portion 124 during the installation and connection process. In order to facilitate the bending of the insulating member 120, the second portion 123 of the insulating member 120 is provided with a groove 125, and the groove 125 penetrates the second portion 123 along the thickness direction of the second portion 123. The notch of the groove 125 is located at the edge of the second portion 123 away from the first portion 122, that is, the notch of the groove 125 is toward one side of the battery cell 130 along the length direction (Z direction) of the pole ear 131. The staff can apply force to the second portion 123 of the insulating member 120 through part of the groove wall of the groove 125, so as to bend the insulating member 120.

[0082] In some embodiments, there are multiple battery cells 130, and the multiple battery cells 130 are arranged in sequence along the width direction of the tab 131, wherein the battery cells 130 arranged in sequence may be connected or have intervals. It is not difficult to understand that the interval (S) between the battery cells 130 arranged in sequence is 0-1 mm.

[0083] As the temperature of the battery cell 130 changes during use, the shape of the battery cell 130 will be deformed to a certain extent. The battery cells 130 arranged at intervals can prevent the battery cells 130 from being deformed and avoid interference between adjacent battery cells 130, thereby ensuring the stability and safety of the battery 100 structure. Furthermore, the battery cells 130 arranged at intervals increase the effective contact area between each battery cell 130 and the external environment, thereby improving the heat dissipation efficiency of the battery 100 and improving the heat dissipation effect of the battery 100. In addition, along the length direction (Z direction) of the pole ear 131, a high-temperature polyimide tape 140 is arranged on the side of the battery cell 130 away from the pole ear 131, that is, the bottom of the battery cell 130, to fix all the battery cells 130 along the width direction (X direction) of the pole ear 131, to prevent the pole ear 131 from breaking due to the movement of the position of the battery cell 130, and to improve the stability of the battery 100.

[0084] In some embodiments, the number of the grooves 125 may be multiple, and the multiple grooves 125 are arranged in sequence along the width direction (X direction) of the pole ear 131. For example, the multiple grooves 125 may be arranged in sequence along the width direction (X direction) of the pole ear 131. The groove 125 may be located in the area between two adjacent battery cells 130. In this way, when the battery cell 130 and the circuit board 110 are connected, the groove 125 can be used to facilitate the application of force to the insulating member 120 and bend the insulating member 120, so that the third portion 124 of the insulating member 120 can insulate and isolate the battery cell 130 and the circuit board 110 along the length direction (Y direction) of the pole ear 131.

[0085] In this embodiment, along the width direction (X direction) of the tab 131, the width (I) of the groove 125 is less than or equal to 1 mm. Along the length direction of the tab 131, the groove wall of the groove 125 on one side away from the notch is an arc surface, and the diameter of the arc surface is equal to the width of the groove 125, that is, the diameter (F) of the arc surface is also less than or equal to 1 mm.

[0086] On the basis of the above-mentioned embodiment, the insulating member 120 has a saddle line 126, which includes a first saddle line 1261 and a second saddle line 1262, both of which extend along the width direction of the pole ear 131; the first saddle line 1261 is located at the connection between the first part 122 and the third part 124, and the second saddle line 1262 is located at the connection between the second part 123 and the third part 124. In this way, the setting of the saddle line 126 facilitates the connection between the insulating member 120, the battery cell 130 and the circuit board 110.

[0087] It can be understood that the first seam line 1261 extends along the width direction (X direction) of the pole ear 131, and the first seam line 1261 is located at the connection between the first part 122 and the third part 124. In this way, the first part 122 of the insulating member 120 covers the circuit board 110, and the third part 124 connected to the first part 122 is bent along the first seam line 1261 along the thickness direction (Y direction) of the pole ear 131 relative to the circuit board 110 toward the side of the battery cell 130, and there is an angle between the extension direction of the third part 124 and the extension direction of the first part 122.

[0088] Furthermore, the second saddle line 1262 extends along the width direction of the pole ear 131, and the second saddle line 1262 is located at the connection between the second part 123 and the third part 124, so that the second part 123 connected to the third part 124 is bent along the second saddle line 1262 along the thickness direction (Y direction) of the pole ear 131 relative to the circuit board 110 toward the side away from the circuit board 110, and the second part 123 is opposite to the pole ear 131 along the thickness direction (Y direction) of the pole ear 131, and there is an angle between the extension direction of the second part 123 and the extension direction of the third part 124. In this embodiment, the provision of the saddle line 126 facilitates the bending of the various parts of the insulating member 120, and the connection between the insulating member 120 and the circuit board 110 and the battery cell 130 is also more neat.

[0089] Specifically, the saddle seam line 126 includes a plurality of connection parts 1263 and a plurality of hollow parts 1264, and the plurality of connection parts 1263 and the plurality of hollow parts 1264 are alternately arranged in sequence along the width direction (X direction) of the pole ear 131. In this way, the saddle seam line 126 can reduce the relative connection area between the first part 122 and the second part 123 and the third part 124 through the alternating arrangement of the connection parts 1263 and the hollow parts 1264, so as to reduce the stress between the first part 122 and the third part 124, and between the third part 124 and the second part 123, and avoid the insulation member 120 from breaking during the bending process, which can improve the production efficiency and yield rate of the battery 100.

[0090] Exemplarily, along the width direction of the tab 131 , the extension length ( W1 ) of the hollow portion 1264 is less than or equal to the extension length ( W2 ) of the connecting portion 1263 ; and / or, the extension length ( W2 ) of the connecting portion 1263 is less than or equal to 6 mm.

[0091] In some embodiments, the extension length of the hollow portion 1264 may be less than the extension length of the connecting portion 1263. It is understood that the connecting portion 1263 has a larger extension length than the hollow portion 1264, which can ensure that the connection between the first portion 122 and the third portion 124, and between the third portion 124 and the second portion 123 is stable, and the insulating member 120 will not break during the bending process. The hollow portion 1264 of the saddle seam 126 can reduce the stress at the bending portion of the insulating member 120, and facilitate the bending of the insulating member 120.

[0092] It can be understood that as the extension length of the hollow portion 1264 increases, the stress at the saddle line 126 of the insulating member 120 decreases. In order to ensure the bending of the insulating member 120 at the saddle line 126 and prevent the saddle line 126 from breaking, the extension length of the hollow portion 1264 can be equal to the extension length of the connecting portion 1263. In this way, the production efficiency and yield rate of the battery 100 can be improved.

[0093] It should be noted that, in this embodiment, the extension length of the connection portion 1263 along the width direction (X direction) of the tab 131 is less than or equal to 6 mm.

[0094] In some embodiments, there are at least two connection holes 121 , and at least two connection holes 121 are arranged at intervals along the width direction of the pole ear 131 , and the first saddle line 1261 is located between adjacent connection holes 121 , and the edge of the connection hole 121 close to the second portion 123 is flush with the first saddle line 1261 .

[0095] In this embodiment, there may be two connection holes 121, which are arranged at intervals and are respectively used for corresponding tabs 131 to pass through, and the tabs 131 pass through the connection holes 121 and are welded to the corresponding tab connection parts 111 on the circuit board 110. Of course, the number of connection holes 121 may be greater. When there are multiple connection holes 121, the multiple connection holes 121 are arranged at intervals along the width direction (X direction) of the tabs 131, and the connection holes 121, the tabs 131 and the tab connection parts 111 are correspondingly arranged to ensure that each tab 131 can pass through the corresponding connection hole 121 and be connected to the corresponding tab connection parts 111.

[0096] In the specific implementation process, the tab connection part 111 is located on the side of the circuit board 110 close to the battery cell 130, so that the tab 131 passes through the connection hole 121 and is connected to the tab connection part 111, which can shorten the connection distance and reduce the structure of the battery 100. It can be understood that the connection hole 121 and the tab connection part 111 are correspondingly arranged, and the connection hole 121 is located in the first part 122 of the insulating member 120, and along the length direction (Z direction) of the tab 131, the connection hole 121 is close to the second part 123 of the insulating member 120, that is, the edge of the connection hole 121 close to the second part 123 is flush with the first saddle line 1261. In this way, the connection between the tab 131 and the tab connection part 111 is facilitated, and the connection between the insulating member 120 and the circuit board 110 is smoother.

[0097] The first saddle line 1261 in this embodiment is located between two adjacent connection holes 121, so that the stress between the adjacent connection holes 121 can be reduced, and the bending of the insulating member 120 is facilitated. Furthermore, the top corner of the connection hole 121 in this embodiment is rounded, and the radius (R) of the rounded corner is 0.5-2mm.

[0098] Further, along the width direction (X direction) of the tab 131 , there is a spacing between the first saddle line 1261 and the edge of the connection hole 121 ; and / or, the spacing is greater than or equal to 4 mm.

[0099] In some embodiments, the second saddle line 1262 may be disposed between adjacent grooves 125 , and along the width direction (X direction) of the tab 131 , there is a spacing between the second saddle line 1262 and the edge of the groove 125 , and the spacing is greater than or equal to 4 mm.

[0100] In some embodiments, along the thickness direction (Y direction) of the tab 131 , the orthographic projection of the circuit board 110 on the plane where the first portion 122 is located is covered by the insulating member 120 .

[0101] It can be understood that along the length direction (Y direction) of the tab 131, the edge of the circuit board 110 is flush with the edge of the first portion 122, and along the width direction (X direction) of the tab 131, the edge of the circuit board 110 is flush with the edge of the first portion 122, that is, the first portion 122 of the insulating member 120 and the circuit board 110 have the same structural dimensions. In this way, the overall structure of the battery 100 is compact.

[0102] Of course, in some embodiments, there is a spacing between the edge of the circuit board 110 and the edge of the first part 122 along the length direction (Y direction) of the pole ear 131, and there is a spacing between the edge of the circuit board 110 and the edge of the first part 122 along the width direction (X direction) of the pole ear 131, and the spacing is less than or equal to 2 mm.

[0103] In this embodiment, the side of the first part 122 facing the circuit board 110 is attached to the circuit board 110. In this way, the side of the first part 122 facing the circuit board 110 can be directly connected to the board surface of the circuit board 110 through the adhesive, and the connection between the insulating member 120 and the circuit board 110 is more stable. The use of the adhesive makes the connection between the insulating member 120 and the circuit board 110 more convenient, which can improve the productivity of the battery 100.

[0104] In some embodiments, the insulating member 120 may be a meta-aramid member, a high-density polyethylene member, a polyimide member, a polyethylene terephthalate member, or the like.

[0105] In a specific implementation process, along the thickness direction (Y direction) of the tab 131 , the thickness of the insulating member 120 is 0.5-2 mm.

[0106] Furthermore, during the molding process of the battery 100 , a plurality of protective film layers 150 may be attached to the outer wall of the battery 100 , and the plurality of protective film layers 150 are sequentially stacked along the thickness direction of the tab 131 to protect the battery 100 .

[0107] In addition, an embodiment of the present application may also provide an electronic device, including an electronic component and the battery 100 in any of the aforementioned embodiments, wherein the electronic component and the battery 100 are electrically connected.

[0108] The electronic device in this embodiment may be a mobile terminal, such as a mobile phone, a tablet computer, a laptop computer, etc., and is not limited to the electronic devices listed above.

[0109] Since the electronic device provided in this embodiment includes the battery 100 in any of the aforementioned embodiments, the safety of the electronic device can be improved.

[0110] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0111] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0112] It should be easily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0113] In addition, spatially relative terms, such as "below," "below," "below," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A battery, characterized in that: The invention comprises a circuit board, an insulating member and a battery cell, wherein the battery cell has two tabs, the two tabs are arranged at intervals along the width direction of the tabs, the battery cell and the circuit board are arranged at intervals along the length direction of the tabs, at least part of the insulating member is located between the battery cell and the circuit board, the orthographic projection of the circuit board on the surface where the insulating member is located is at least partially covered by the insulating member, and the orthographic projection of the tab on the surface where the insulating member is located is at least partially covered by the insulating member; The circuit board has at least two tab connecting parts, the tab connecting parts and the tabs are arranged in one-to-one correspondence, the insulating member is provided with a connecting hole penetrating the insulating member, the tab passes through the connecting hole, and is electrically connected to the circuit board through the corresponding tab connecting part.

2. The battery according to claim 1, characterized in that The insulating member comprises a first part and a second part, wherein the first part and the second part are arranged in sequence along the length direction of the pole lug; Along the thickness direction of the tab, the battery cell and the circuit board are located on both sides of the insulating member, and the first portion of the insulating member is in contact with the circuit board; Along the length direction of the pole ear, the second portion extends to one end of the battery cell facing the circuit board; The connecting hole is located in the first portion.

3. The battery according to claim 2, characterized in that The insulating member further comprises a third portion, and along the length direction of the pole ear, the third portion is connected between the first portion and the second portion; The battery core and the circuit board are respectively located on two sides of the third portion in a thickness direction.

4. The battery according to claim 3, characterized in that An extension direction of the first portion and an extension direction of the second portion are parallel to each other, and both have an included angle with the extension direction of the third portion.

5. The battery according to any one of claims 2 to 4, characterized in that: The second part is provided with a plurality of grooves, the plurality of grooves are arranged in sequence along the width direction of the pole ear, the grooves penetrate the second part along the thickness direction of the second part, and the notches of the grooves are located at the edge of the second part away from the first part; There are a plurality of battery cells, and the plurality of battery cells are arranged in sequence along the width direction of the pole lug. Along the thickness direction of the pole lug, at least one of the grooves corresponds to the area between two adjacent battery cells.

6. The battery according to claim 3, characterized in that The insulating member has a saddle line, and the saddle line includes a first saddle line and a second saddle line, and the first saddle line and the second saddle line both extend along the width direction of the pole ear; The first saddle stitch line is located at the connection between the first part and the third part, and the second saddle stitch line is located at the connection between the second part and the third part.

7. The battery according to claim 6, characterized in that There are at least two connection holes, which are spaced apart along the width direction of the pole ear, the first saddle line is located between adjacent connection holes, and the edge of the connection hole close to the second part is flush with the first saddle line.

8. The battery according to claim 6, characterized in that The saddle stitch line includes a plurality of connection parts and a plurality of hollow parts, and the plurality of connection parts and the plurality of hollow parts are alternately arranged in sequence along the width direction of the pole ear.

9. The battery according to claim 8, characterized in that Along the width direction of the pole lug, the extension length of the hollow portion is less than or equal to the extension length of the connecting portion; and / or, The extension length of the connecting portion is less than or equal to 6 mm.

10. The battery according to claim 7, characterized in that Along the width direction of the pole ear, there is a distance between the first seam line and the edge of the connecting hole; and / or, The spacing is greater than or equal to 4 mm.

11. The battery according to any one of claims 2 to 4, characterized in that: Along the thickness direction of the tab, the orthographic projection of the circuit board on the plane where the first part is located is covered by the insulating member.

12. The battery according to any one of claims 1 to 4, characterized in that: Along the thickness direction of the tab, the orthographic projection of the tab connection portion on the surface where the circuit board is located is located in the connection hole.

13. An electronic device, characterized in that: The invention comprises an electronic component and the battery according to any one of claims 1 to 12, wherein the electronic component and the battery are electrically connected.

Images