Battery and electronic equipment

Abstract

The utility model discloses a battery and electronic equipment, and relates to the technical field of batteries. The battery comprises a battery cell assembly and a circuit board assembly, the battery cell assembly comprises at least two battery cells, the battery cells are electrically connected with the circuit board assembly, each battery cell comprises a battery cell body, a top sealing part and two side sealing parts, and the battery cell body comprises a bottom wall, two side walls and a top wall; one end, far away from the bottom wall, of the side sealing part is connected with the top sealing part to form two break angles; the circuit board assembly is located on the side, provided with the top wall, in the battery cell, the circuit board assembly is provided with an avoiding assembly used for avoiding the break angle, and the break angle is located in a space formed by the avoiding assembly, or the break angle penetrates through the avoiding assembly. By arranging the avoiding assembly, the circuit board assembly is accommodated in the space formed by the avoiding assembly, or the break angle penetrates through the avoiding assembly, so that the distance between the circuit board assembly and the top sealing part of the battery cell is reduced, and the space occupation of the battery in the length direction is further reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a battery. In addition, the present application also relates to an electronic device including the battery. Background Art

[0002] With the rapid development of electrochemical technology, people are demanding higher and higher battery capacity. In addition, as the energy density of battery cells increases, the space occupied by the battery circuit board leads to an increasing capacity loss.

[0003] To increase battery capacity, current manufacturers generally optimize the head space of the battery by folding the battery. In a folding top seal battery, the edge sealing device includes a side seal portion that fits against the side of the battery cell body and a top seal portion that fits against the top surface of the battery cell body. The connection between the side seal portion and the top seal portion forms a fold extending along the length of the battery cell body. When at least two battery cells are arranged side by side, the circuit board will span the adjacent folds of the adjacent battery cells. The adjacent folds protrude from the top wall of the battery cell, which will interfere with the layout of the circuit board. Sufficient space must be reserved between the circuit board and the top seal portion of the battery cell to accommodate the folds, resulting in an increase in the distance between the circuit board and the top seal portion of the battery cell, which increases the overall length of the battery.

[0004] In summary, how to reduce the space occupied by the battery in the length direction while maintaining the same battery capacity is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present application is to provide a battery, which reduces the distance between the circuit board assembly and the top sealing part of the battery cell by setting an avoidance component, thereby reducing the space occupied by the battery in the length direction.

[0006] Another object of the present application is to provide an electronic device comprising the battery.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] In a first aspect, an embodiment of the present application provides a battery, comprising a cell assembly and a circuit board assembly, the cell assembly comprising at least two cells arranged side by side along a first direction, the cells being electrically connected to the circuit board assembly, the cells comprising a cell body, a top seal and two side seals, the cell body comprising a bottom wall, two side walls and a top wall, the top seal being attached to the top wall, and the side seal being attached to the side walls; one end of the side seal away from the bottom wall is connected to the top seal to form two fold angles; the circuit board assembly is located on a side of the cell where the top wall is provided, and the circuit board assembly is arranged parallel to the top wall, the circuit board assembly being provided with a avoidance assembly for avoiding the fold angle, the fold angle being located in the space formed by the avoidance assembly, or the fold angle is arranged through the avoidance assembly.

[0009] By setting up an avoidance component, the folded corner is accommodated in the space formed by the avoidance component, or the folded corner passes through the avoidance component, thereby reducing the distance between the circuit board assembly and the top seal of the battery cell, thereby reducing the space occupied by the battery in the length direction.

[0010] Optionally, the circuit board assembly includes two rigid circuit boards spaced apart along the first direction, at least one flexible circuit board and a connecting flexible board;

[0011] The two rigid circuit boards are electrically connected via the flexible connecting board, and at least one flexible circuit board is electrically connected to the rigid circuit board;

[0012] The avoidance component is arranged in the interval space between the two rigid circuit boards.

[0013] Optionally, the flexible circuit board is provided with a bent portion, the bent portion is connected to a side of the rigid circuit board facing the top sealing portion, and the bent portion extends along a surface of the rigid circuit board close to the battery cell;

[0014] The extending length of the bent portion is less than 1 / 2 of the total length of the rigid circuit board, and electronic components are provided on a portion of the rigid circuit board facing the top sealing portion that is not covered by the bent portion.

[0015] Optionally, the flexible circuit board is provided with a bent portion, the bent portion is connected to a side of the rigid circuit board facing the top sealing portion, and the bent portion extends along a surface of the rigid circuit board close to the battery cell;

[0016] The extending length of the bent portion is greater than 1 / 2 of the total length of the rigid circuit board, and electronic components are arranged on a side of the bent portion facing the top sealing portion.

[0017] Optionally, the avoidance component includes a first through hole for the corner to pass through, and the first through hole is arranged at a position in the connecting soft board opposite to the spacing space between the two rigid circuit boards.

[0018] Optionally, the width of the first through hole is greater than 1 mm, and the height of the first through hole is greater than the width of the rigid circuit board.

[0019] Optionally, the connecting flexible board is arranged on the side of the hard circuit board away from the battery cell, and the connecting flexible board includes a first part, a second part and a third part connected in sequence, the first through hole is arranged in the second part, the second part is used to connect to the side of the hard circuit board away from the battery cell, the first part is used to connect to the upper top surface of the circuit board assembly, and the third part is used to connect to the lower bottom surface of the circuit board assembly.

[0020] Optionally, a dimension of the first portion along the thickness direction of the circuit board assembly and a dimension of the third portion along the thickness direction of the circuit board assembly are both greater than 1 mm.

[0021] Optionally, the connecting soft board is arranged on the side of the hard circuit board facing the battery cell, and the connecting soft board includes a fourth part, a fifth part, a sixth part, a seventh part and an eighth part connected in sequence, the first through hole is arranged in the sixth part, the sixth part is used to connect with the side of the hard circuit board facing the battery cell, the fifth part is used to connect with the upper top surface of the circuit board assembly, the seventh part is used to connect with the lower bottom surface of the circuit board assembly, and at least one of the fourth part and the eighth part is connected to the side of the hard circuit board facing away from the battery cell.

[0022] Optionally, one of the fourth part and the eighth part is stacked on the outside of the other.

[0023] Optionally, the portion of the connecting flexible board connected to the rigid circuit board is provided on a surface of the rigid circuit board facing away from the battery cell, and the connecting flexible board extends along a plane parallel to the rigid circuit board;

[0024] Electronic components are arranged on the surface of the rigid circuit board facing the battery core.

[0025] Optionally, the circuit board assembly includes two rigid circuit boards spaced apart along the first direction and a flexible circuit board;

[0026] The two rigid circuit boards are electrically connected to the flexible circuit board, the flexible circuit board is provided on the side of the rigid circuit board facing away from the battery cell, and the electronic components are provided on the side of the rigid circuit board facing the battery cell;

[0027] The avoidance component is arranged in the interval space between the two rigid circuit boards.

[0028] Optionally, the avoidance component includes a second through hole for the corner to pass through, and the second through hole is arranged at a position in the flexible circuit board opposite to the spacing space between the two rigid circuit boards.

[0029] Optionally, the avoidance component includes a support member arranged between two adjacent rigid circuit boards, the support member is provided with a avoidance groove recessed in a direction away from the battery cell, and the avoidance groove is used to accommodate the folded corner.

[0030] Optionally, along the length direction of the battery core, a ratio of the distance between the circuit board assembly and the top sealing portion to an extension length of the folded corner along the plane where the side wall is located is 0.8-1.5.

[0031] In a second aspect, embodiments of the present application provide an electronic device comprising a load and any of the aforementioned batteries, the battery being used to power the load. The battery occupies a reduced lengthwise space, thereby reducing the lengthwise space occupied by the battery in the electronic device, thereby facilitating a slimmer and lighter design for the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0033] Figure 1 A schematic diagram of the folding direction of the packaging bag provided in this application wrapped around the battery cell body;

[0034] Figure 2 A schematic structural diagram of a specific embodiment of the battery cell provided in this application;

[0035] Figure 3 This is a schematic structural diagram of a specific embodiment of the battery provided in this application;

[0036] Figure 4 This is a structural diagram of a specific embodiment 1 of the avoidance component provided in this application;

[0037] Figure 5 for Figure 3 Schematic diagram of the explosion after the middle battery is set with injection molding;

[0038] Figure 6 for Figure 5 Schematic diagram of the structure of the battery;

[0039] Figure 7 An exploded schematic diagram of a first embodiment of a circuit board assembly;

[0040] Figure 8 for Figure 7 A cross-sectional schematic diagram of a circuit board assembly;

[0041] Figure 9 It is an exploded schematic diagram of a second specific embodiment of a circuit board assembly;

[0042] Figure 10 for Figure 9 A cross-sectional schematic diagram of a circuit board assembly;

[0043] Figure 11 This is a schematic structural diagram of a specific embodiment 2 of the battery provided in this application;

[0044] Figure 12 for Figure 11 A partial enlarged view of F1 in the middle;

[0045] Figure 13 for Figure 11 Schematic diagram of the explosion of the battery;

[0046] Figure 14 for Figure 11 Schematic diagram of the structure of the circuit board assembly;

[0047] Figure 15 for Figure 14 A schematic front view of the circuit board assembly;

[0048] Figure 16 for Figure 11 This is a schematic structural diagram of a specific embodiment 3 of the battery provided in this application;

[0049] Figure 17 for Figure 16 Schematic diagram of the structure of the circuit board assembly;

[0050] Figure 18 for Figure 16 A structural diagram of a specific embodiment 1 of the bending method of the medium-soft connecting plate;

[0051] Figure 19 for Figure 18 A partial enlarged view of F2 in the middle;

[0052] Figure 20 for Figure 16 A structural diagram of a second specific embodiment of the bending method of the medium-soft connecting plate;

[0053] Figure 21 for Figure 20 A partial enlarged view of F3 in the middle;

[0054] Figure 22 It is an exploded schematic diagram of a third specific embodiment of a circuit board assembly;

[0055] Figure 23 for Figure 22 Schematic cross-section of the circuit board assembly.

[0056] Figure 1-Figure 23 middle:

[0057] 100-battery cell assembly;

[0058] 110-battery cell, 1101-battery cell body, 1101a-bottom wall, 1101b-side wall, 1101c-top wall, 1102-top seal, 1103-side seal, 1104-corner, 1105-electrode tab;

[0059] 200-Circuit Board Assembly.

[0060] 210-hard circuit board;

[0061] 220-flexible circuit board;

[0062] 230-connecting flexible board; 2301-first part, 2302-second part, 2303-third part; 2304-fourth part, 2305-fifth part, 2306-sixth part, 2307-seventh part, 2308-eighth part, 2309-first through hole;

[0063] 240-Nickel sheet;

[0064] 250-electronic components;

[0065] 260-support member;

[0066] 300-Injection molded body. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0068] The core of this application is to provide a battery, which reduces the distance between the circuit board assembly and the top sealing part of the battery cell by setting an avoidance component, thereby reducing the space occupied by the battery in the length direction.

[0069] Another object of the present application is to provide an electronic device comprising the battery.

[0070] Example 1

[0071] Please refer to Figure 1 、 Figure 2 、 Figure 3 The battery provided in this specific embodiment includes a battery cell assembly 100 and a circuit board assembly 200. The battery cell assembly 100 includes at least two battery cells 110 arranged in parallel along a first direction. The battery cell 110 is electrically connected to the circuit board assembly 200. The battery cell 110 includes a battery cell body 1101, a top sealing portion 1102 and two side sealing portions 1103. The battery cell body 1101 includes a bottom wall 1101a, two side walls 1101b and a top wall 1101c. The top sealing portion 1102 is attached to the top wall 1101c, and the side sealing portion 1103 is attached to the side wall 1101b; one end of the side sealing portion 1103 away from the bottom wall 1101a is connected to the top sealing portion 1102 to form two folded corners 1104; please refer to Figure 3 、 Figure 4 The circuit board assembly 200 is located on the side of the battery cell 110 where the top wall 1101 c is provided.

[0072] It should be noted that the first direction mentioned in this specific embodiment is Figure 1 、 Figure 2 The direction indicated by the X-axis of the mid-coordinate; the extension direction of the angle 1104 is Figure 1 、 Figure 2 The direction indicated by the Y axis of the mid-coordinate. In this specific embodiment, the length direction of the battery cell body 1101 is the second direction. Figure 1 、 Figure 2 The direction shown by the Y axis of the middle coordinate is the thickness direction of the battery cell body 1101, and the third direction is Figure 1 、 Figure 2 The direction indicated by the Z axis of the middle coordinate is the width direction of the battery cell body 1101 as the first direction. Figure 1 、 Figure 2 The direction shown by the X axis of the mid-coordinate.

[0073] Combine Figure 1 、 Figure 2 As shown, the top seal portion 1102 in this specific embodiment is the portion that is attached to the top wall 1101c and extends along the top wall 1101c after the packaging bag is bent, and the side seal portion 1103 is the portion that is attached to the side wall 1101b and extends along the side wall 1101b after the packaging bag is bent.

[0074] Combine Figure 1 、 Figure 2As shown, the top wall 1101c of the battery cell body 1101 is provided with a tab 1105. The tab 1105 extends along the length of the battery cell 110 and is electrically connected to the circuit board assembly 200. The number and polarity of the tabs 1105 can be set according to actual needs. For example, in a scenario where the battery cell 110 has positive and negative polarity, the electrode assembly includes a positive electrode sheet and a negative electrode sheet, and a separator provided between the positive electrode sheet and the negative electrode sheet. The electrode assembly can be formed by winding or stacking a plurality of electrode sheets. One end of the tab 1105 extends into the packaging bag and is electrically connected to the electrode sheet of corresponding polarity. The other end of the tab 1105 extends out of the top seal portion 1102. Suitably, the tab 1105 includes a first tab 1105 and a second tab 1105. The first tab 1105 is the negative electrode tab 1105, and the second tab 1105 is the positive electrode tab 1105. The first tab 1105 is electrically connected to the negative electrode plate, and the second tab 1105 is electrically connected to the positive electrode plate, and each extends outside the packaging bag. In other embodiments, the first tab 1105 can be the positive electrode tab 1105, and the second tab 1105 can be the negative electrode tab 1105. The structures of the first tab 1105 and the second tab 1105 can be the same or different, and the two can be arranged symmetrically along the first direction x or asymmetrically. Of course, the tab 1105 can also have other structural forms that meet the requirements, which are determined according to actual conditions and are not described in detail here.

[0075] The circuit board assembly 200 is provided with a avoiding component for avoiding the corner 1104. The corner 1104 is located in the space formed by the avoiding component. Specifically, it can be as follows: Figure 4 As shown, a support member 260 is provided on the side of the circuit board assembly 200 facing the battery cell 110. The support member 260 is provided with an avoidance groove that is recessed in the direction away from the battery cell 110. The avoidance groove is used to accommodate the folded corner 1104. The folded corner 1104 is located in the avoidance groove, thereby improving the interference between the circuit board assembly 200 and the folded corner 1104, reducing the distance between the circuit board assembly 200 and the top sealing part 1102 of the battery cell 110, and thereby reducing the space occupied by the battery in the length direction.

[0076] On the other hand, the folded corner 1104 can be passed through the avoidance component to improve the interference between the circuit board assembly 200 and the folded corner 1104, reduce the distance between the circuit board assembly 200 and the top sealing part 1102 of the battery cell 110, and thus reduce the space occupied by the battery in the length direction.

[0077] Example 2

[0078] This application uses the same reference numerals to identify the structural elements with the same names. Based on the description of Example 1, but different from it, combined with Figure 5 、 Figure 6As shown, the battery of this embodiment 2 also includes an injection molded body 300, which is arranged on the side of the circuit board assembly 200 facing the top sealing portion 1102, and is at least used to cover the electronic components 250 on the circuit board assembly 200. It should be noted that when a support member 260 is provided, one side of the support member 260 facing the top sealing portion 1102 of the battery cell 110 needs to reserve an accommodation space for the corner 1104, and the injection molded body 300 should be avoided from entering.

[0079] On the other hand, an injection molding body 300 may also be provided on the side of the circuit board assembly 200 away from the top sealing portion 1102 of the battery cell 110 , so as to cover and protect structures such as the nickel sheet 240 on the circuit board assembly 200 .

[0080] The injection molded body 300 can be an injection molded body 300 formed by a low-pressure injection molding process or a glue potting process. The injection molded body 300 can be made of materials with insulation, corrosion resistance, water resistance and oxygen resistance, including but not limited to: ABS, PP, PVC, PC, etc. The injection molded body 300 can reduce corrosion of the components it covers (such as electronic components 250). For example, taking the injection molded body 300 made of PP as an example, in the scenario of testing the corrosion resistance of the injection molded body 300 through salt spray, a battery is placed in a salt spray test chamber, and a salt spray environment is created in the volume space of the salt spray test chamber to assess the salt spray corrosion resistance of the product. After a predetermined time (such as 1 hour) under high temperature conditions, the ratio of the corrosion area of the injection molded body 300 to the total area is almost zero, so that the components located in the injection molded body 300 can be well protected from external corrosion.

[0081] Example 3

[0082] This application uses the same reference numerals to identify the structural elements with the same names. Figures 7 to 10 The circuit board assembly 200 includes two rigid circuit boards 210, two flexible circuit boards 220, and a connecting flexible board 230 spaced apart along a first direction; the two rigid circuit boards 210 are electrically connected via the connecting flexible board 230, one of the two flexible circuit boards 220 is electrically connected to one of the rigid circuit boards 210, and the other of the two flexible circuit boards 220 is electrically connected to the other rigid circuit board 210; the avoidance component is arranged in the interval space between the two rigid circuit boards 210, and the nickel sheet 240 is arranged on the side of the rigid circuit board 210 away from the top sealing portion 1102 of the battery cell 110.

[0083] It should be noted that the flexible circuit board 220 in this specific embodiment can be set to at least one. When the number of flexible circuit boards 220 is one, the flexible circuit board 220 is set on the side of the hard circuit board 210 away from the battery cell 110. When the flexible circuit board 220 has a bent portion, the bent portion of the flexible circuit board 220 can be set on the side of the hard circuit board 210 facing the battery cell 110.

[0084] According to the different sizes of the flexible circuit board 220, such as Figure 7 、 Figure 8 As shown, the flexible circuit board 220 is provided with a bent portion, which is connected to the side of the rigid circuit board 210 facing the top seal 1102. The bent portion extends along the surface of the rigid circuit board 210 near the battery cell 110. The extended length of the bent portion is less than 1 / 2 of the total length of the rigid circuit board 210. The portion of the rigid circuit board 210 facing the top seal 1102 that is not covered by the bent portion is provided with an electronic component 250. In this case, the extended length of the bent portion on the side of the rigid circuit board 210 facing the top seal 1102 is less than 1 / 2 of the total length of the rigid circuit board 210, and the electronic component 250 can be provided in the portion of the rigid circuit board 210 facing the top seal 1102 that is not covered by the bent portion. Figure 7 、 Figure 8 The circuit board assembly 200 is arranged in a manner that is low in cost, but welding connections are required between the flexible circuit board 230 and the rigid circuit board 210, and between the rigid circuit board 210 and the flexible circuit board 220. There are many welding points, which increases the thermal resistance of the circuit board assembly 200 and causes a faster temperature rise. In addition, the electronic components 250 are arranged in the portion of the rigid circuit board 210 that is not covered by the bent portion on the side facing the top seal 1102. The electronic components 250 cannot be arranged in the portion of the rigid circuit board 210 that is covered by the flexible circuit board 220, resulting in a low space utilization rate for the circuit board assembly 200.

[0085] like Figure 9 、 Figure 10 As shown, the flexible circuit board 220 is provided with a bending portion, which is connected to the side of the rigid circuit board 210 facing the top sealing portion 1102, and the bending portion extends along the surface of the rigid circuit board 210 close to the battery cell 110; the extension length of the bending portion is greater than 1 / 2 of the total length of the rigid circuit board 210, and the electronic component 250 is provided on the side of the bending portion facing the top sealing portion 1102. Figure 9 、 Figure 10 In the arrangement of the circuit board assembly 200 shown, Figure 7 、 Figure 8In the arrangement of the circuit board assembly 200 shown, the size of the flexible circuit board 220 is increased, and the cost increases to a certain extent. In addition, the electronic components 250 are arranged on the side of the flexible circuit board 220 facing the top sealing portion 1102. After the size of the bent portion in the flexible circuit board 220 is increased, the area available for mounting the electronic components 250 is increased, thereby improving the space utilization of the circuit board assembly 200.

[0086] In this specific embodiment, refer to Figures 7 to 10 A support member 260 can be installed in the gap between two adjacent rigid circuit boards 210. The support member 260 is provided with an escape groove recessed away from the battery cells 110 to accommodate the folded corner 1104. The support member 260 includes a downwardly-opening U-shaped structure, a first connection portion connected to one side of the U-shaped structure's opening, and a second connection portion connected to the other side of the U-shaped structure's opening. The first connection portion is connected to the side of the top seal 1102 of one rigid circuit board 210 facing the battery cells 110, and the second connection portion is connected to the side of the top seal 1102 of the other rigid circuit board 210 facing the battery cells 110. The top surface of the downwardly-opening U-shaped structure is lower than or flush with the surface of the rigid circuit board 210 facing away from the top seal 1102 of the battery cells 110. The folded corner 1104 can extend into the U-shaped structure of the support member 260.

[0087] Example 4

[0088] This application uses the same reference numerals to identify the structural elements with the same names. Based on the description of Examples 1, 2, and 3, but different from them, combined with Figures 11 to 15 As shown, the avoidance component includes a first through hole 2309 for the corner 1104 to pass through. The first through hole 2309 is arranged at a position in the connecting flexible circuit board 230 opposite to the spacing space between the two rigid circuit boards 210 .

[0089] Specifically, the width of the first through hole 2309 is greater than 1 mm, and the height of the first through hole 2309 is greater than the width of the rigid circuit board 210, so that the two corners 1104 at the contact position of two adjacent battery cells 110 can extend through the first through hole 2309. Figure 15 In the figure, dimension A is greater than 1 mm, dimension B is greater than the dimension of the circuit board assembly 200 in the third direction to avoid forming a protrusion during bending, and dimension C is greater than 1 mm so that the connecting soft board 230 has sufficient area to connect the two rigid circuit boards 210.

[0090] like Figure 15 As shown, the connecting soft board 230 is arranged on the side of the rigid circuit board 210 away from the battery cell 110, and the connecting soft board 230 includes a first part 2301, a second part 2302 and a third part 2303 connected in sequence. Figure 11-13As shown, the first through hole 2309 is arranged in the second part 2302, the second part 2302 is used to connect to the side of the hard circuit board 210 away from the battery cell 110, the first part 2301 is used to connect to the upper top surface of the circuit board assembly 200, and the third part 2303 is used to connect to the lower bottom surface of the circuit board assembly 200.

[0091] Specifically, such as Figure 15 As shown, the dimensions of the first portion 2301 along the thickness direction of the circuit board assembly 200 and the dimensions of the third portion 2303 along the thickness direction of the circuit board assembly 200 are both greater than 1 mm, so that the connecting flexible board 230 has sufficient area to connect the two rigid circuit boards 210 .

[0092] Figures 11 to 15 In the setting shown, a first through hole 2309 is provided in the connecting flexible board 230, and the first through hole 2309 corresponds to the gap between the two adjacent rigid circuit boards 210. During the actual assembly process, the folded corner 1104 can sequentially pass through the gap between the two adjacent rigid circuit boards 210 and extend out of the first through hole 2309, thereby improving the interference between the circuit board assembly 200 and the folded corner 1104, reducing the distance between the circuit board assembly 200 and the top sealing portion 1102 of the battery cell 110, and thereby reducing the space occupied by the battery in the length direction.

[0093] It should be noted that, when the first through hole 2309 is provided in the connection flexible board 230 , the support member 260 may not be provided, or a third through hole corresponding to the first through hole 2309 may be provided in the support member 260 .

[0094] Example 5

[0095] This application uses the same reference numerals to identify the structural elements with the same names. Based on the description of Examples 1, 2, 3, and 4, but different from them, combined with Figures 16 to 21 The connecting flexible board 230 is arranged on the side of the rigid circuit board 210 facing the battery cell 110. The connecting flexible board 230 includes a fourth portion 2304, a fifth portion 2305, a sixth portion 2306, a seventh portion 2307 and an eighth portion 2308 connected in sequence. The first through hole 2309 is arranged on the sixth portion 2306. The sixth portion 2306 is used to connect to the side of the rigid circuit board 210 facing the battery cell 110. The fifth portion 2305 is used to connect to the upper top surface of the circuit board assembly 200. The seventh portion 2307 is used to connect to the lower bottom surface of the circuit board assembly 200. At least one of the fourth portion 2304 and the eighth portion 2308 is connected to the side of the rigid circuit board 210 facing away from the battery cell 110.

[0096] like Figure 17As shown, dimension D is greater than half of the dimension of the rigid circuit board 210 along the third direction Z. In addition, the flexible connecting board 230 can be wrapped after welding or before welding, and can be fixed to the rigid circuit board 210 with glue or tape during wrapping.

[0097] like Figure 19 As shown, one of the fourth portion 2304 and the eighth portion 2308 is stacked on the outside of the other, which can effectively increase the protection area of the connecting flexible board 230.

[0098] On the other hand, you can also Figure 21 As shown, the fourth portion 2304 and the eighth portion 2308 are both in contact with the side of the rigid circuit board 210 facing away from the top sealing portion 1102 , which can effectively reduce the surface protrusion height of the circuit board assembly 200 .

[0099] It should be noted that the flexible connection board 230 can be bonded to the rigid circuit board 210 or welded to the rigid circuit board 210 , which is determined according to actual conditions and will not be elaborated here.

[0100] Example 6

[0101] This application uses the same reference numerals to identify the structural elements with the same names. Based on the description of embodiments 1, 2, 3, 4, and 5, but different from them, combined with Figure 22 、 Figure 23 As shown, the circuit board assembly 200 includes two hard circuit boards 210 and a soft circuit board 220 spaced apart along a first direction; the two hard circuit boards 210 are electrically connected to the soft circuit board 220, the soft circuit board 220 is provided on the side of the hard circuit board 210 facing away from the battery cell 110, and the electronic components 250 are provided on the side of the hard circuit board 210 facing the battery cell 110; the avoidance component is provided in the interval space between the two hard circuit boards 210, and the nickel sheet 240 is provided on the side of the soft circuit board 220 facing away from the hard circuit board 210.

[0102] In this specific embodiment, the flexible circuit board 220 is set as an integrated structure, avoiding the setting of the connecting soft board 230. The connecting soft boards 230 are all located on the side of the rigid circuit board 210 away from the top sealing portion 1102. The side of the rigid circuit board 210 facing the top sealing portion 1102 can be used to install electronic components 250, which can effectively improve the space utilization of the circuit board assembly 200.

[0103] Furthermore, to avoid corner 1104, the avoidance assembly can include a second through-hole through which corner 1104 passes. The second through-hole is located in the flexible circuit board 220 opposite the space between the two rigid circuit boards 210. Passing corner 1104 through the space between the two rigid circuit boards 210 and extending through the second through-hole reduces interference between the circuit board assembly 200 and corner 1104, reduces the distance between the circuit board assembly 200 and the top seal 1102 of the battery cell 110, and thus reduces the space occupied by the battery in the longitudinal direction.

[0104] On the other hand, a support member 260 can also be set in the interval space between the two rigid circuit boards 210 in this specific embodiment. The support member 260 is provided with an avoidance groove that is recessed in the direction away from the battery cell 110. The avoidance groove is used to accommodate the folded corner 1104, which can effectively improve the interference between the circuit board assembly 200 and the folded corner 1104, reduce the distance between the circuit board assembly 200 and the top sealing part 1102 of the battery cell 110, and thereby reduce the space occupied by the battery in the length direction.

[0105] Example 7

[0106] This application uses the same reference numerals to identify structural elements with the same names. Based on the descriptions of Examples 1, 2, 3, 4, and 5, but differing therefrom, the ratio of the distance between the circuit board assembly 200 and the top seal 1102 to the extension length of the folded corner 1104 along the plane of the side wall 1101b is 0.8-1.5. In actual use, when the distance between the circuit board assembly 200 and the top seal 1102 is greater than the extension length of the folded corner 1104 in the second direction, the support member 260 can be provided to position the folded corner 1104 within the avoidance groove formed by the support member 260. Here, the distance between the circuit board assembly 200 and the top seal 1102 is the spacing along the second direction from the surface of the circuit board assembly 200 facing away from the top seal 1102 to the top seal 1102. When the distance between the circuit board assembly 200 and the top sealing portion 1102 is smaller than the extension length of the folded corner 1104 in the second direction, the folded corner 1104 can be extended out of the circuit board assembly 200 by setting a first through hole 2309 in the connecting soft board 230 or a second through hole in the soft connecting board.

[0107] Example 8

[0108] Based on the description of Examples 1, 2, 3, 4, 5, and 7, but different therefrom, the portion of the connecting flexible board 230 that is connected to the rigid circuit board 210 is arranged on the surface of the rigid circuit board 210 facing away from the battery cell 110, and the connecting flexible board 230 extends along a plane parallel to the rigid circuit board 210; the surface of the rigid circuit board 210 facing the battery cell 110 is provided with an electronic component 250.

[0109] like Figures 7 to 10 As shown, the connecting flexible board 230 is arranged straightly, and the connecting flexible board 230 is located on the side of the rigid circuit board 210 away from the battery cell 110. The electronic components 250 are arranged on the surface of the rigid circuit board 210 facing the battery cell 110, which does not need to occupy the space between the two rigid circuit boards 210, and the extension dimension of the corner 1104 along the second direction will not interfere with the connecting flexible board 230.

[0110] In this specific embodiment, by arranging the electronic component 250 on the side of the hard circuit board 210 facing the battery cell 110, the connecting flexible board 230 can be arranged straight, avoiding the connecting flexible board 230 from protruding toward the side away from the battery cell 110, and avoiding the protruding part of the connecting flexible board 230 from occupying the space in the second direction, making the structural layout of the battery more reasonable.

[0111] In addition to the above-mentioned battery, the present application also provides an electronic device including a load and the battery disclosed in the above-mentioned embodiment, wherein the battery powers the load. For the structures of other parts of the electronic device, please refer to the prior art and will not be described in detail herein.

[0112] Electronic devices can be implemented in various forms, such as drones, electric vehicles, electric cleaning tools, energy storage products, electric cars, electric bicycles, electric navigation tools, and other electronic products. In practical scenarios, electronic devices include, but are not limited to, backup power supplies, motors, cars, motorcycles, power-assisted bicycles, bicycle power tools, large household batteries, and lithium-ion capacitors.

[0113] It will be understood by those skilled in the art that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed electronic devices.

[0114] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Any combination of all the embodiments provided in this application is within the scope of protection of this utility model and will not be described in detail here.

[0115] The above is a detailed introduction to the battery and electronic device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A battery, comprising a cell assembly (100) and a circuit board assembly (200), wherein the cell assembly (100) comprises at least two cells (110) arranged in parallel along a first direction, the cells (110) being electrically connected to the circuit board assembly (200), the cells (110) comprising a cell body (1101), a top seal portion (1102) and two side seal portions (1103), the cell body (1101) comprising a bottom wall (1101a), two side walls (1101b) and a top wall (1101c), the top seal portion (1102) being attached to the top wall (1101c), and the side seal portions (1103) being attached to the side walls (1101b); an end of the side seal portion (1103) away from the bottom wall (1101a) being connected to the top seal portion (1102) to form two folded corners (1104); It is characterized in that The circuit board assembly (200) is located on a side of the battery cell (110) where the top wall (1101c) is provided, and the circuit board assembly (200) is arranged parallel to the top wall (1101c). The circuit board assembly (200) is provided with a avoidance assembly for avoiding the folded corner (1104), and the folded corner (1104) is located in a space formed by the avoidance assembly, or the folded corner (1104) is arranged to pass through the avoidance assembly.

2. The battery according to claim 1, characterized in that The circuit board assembly (200) comprises two rigid circuit boards (210) spaced apart along the first direction, at least one flexible circuit board (220), and a connecting flexible board (230); The two rigid circuit boards (210) are electrically connected via the connecting flexible board (230), and at least one flexible circuit board (220) is electrically connected to the rigid circuit board (210); The avoidance component is arranged between the two rigid circuit boards (210).

3. The battery according to claim 2, characterized in that The flexible circuit board (220) is provided with a bent portion, the bent portion being connected to a side of the rigid circuit board (210) facing the top sealing portion (1102), and the bent portion extending along a surface of the rigid circuit board (210) close to the battery cell (110); The extension length of the bent portion is less than 1 / 2 of the total length of the rigid circuit board (210), and the portion of the rigid circuit board (210) facing the top sealing portion (1102) that is not covered by the bent portion is provided with an electronic component (250).

4. The battery according to claim 2, characterized in that The flexible circuit board (220) is provided with a bent portion, the bent portion being connected to a side of the rigid circuit board (210) facing the top sealing portion (1102), and the bent portion extending along a surface of the rigid circuit board (210) close to the battery cell (110); The extension length of the bent portion is greater than 1 / 2 of the total length of the rigid circuit board (210), and the portion of the bent portion facing the top sealing portion (1102) is provided with an electronic component (250).

5. The battery according to claim 2, characterized in that The avoidance component comprises a first through hole (2309) for allowing the folded corner (1104) to pass through, and the first through hole (2309) is arranged at a position in the connecting soft board (230) opposite to the spacing space between the two rigid circuit boards (210).

6. The battery according to claim 5, characterized in that The width of the first through hole (2309) is greater than 1 mm, and the height of the first through hole (2309) is greater than the width of the rigid circuit board (210).

7. The battery according to claim 5, characterized in that The connecting soft board (230) is arranged on a side of the rigid circuit board (210) facing away from the battery cell (110), and the connecting soft board (230) comprises a first part (2301), a second part (2302), and a third part (2303) connected in sequence, the first through hole (2309) is arranged in the second part (2302), the second part (2302) is used to connect with a side of the rigid circuit board (210) facing away from the battery cell (110), the first part (2301) is used to connect with the upper top surface of the circuit board assembly (200), and the third part (2303) is used to connect with the lower bottom surface of the circuit board assembly (200).

8. The battery according to claim 7, characterized in that The dimension of the first portion (2301) along the thickness direction of the circuit board assembly (200) and the dimension of the third portion (2303) along the thickness direction of the circuit board assembly (200) are both greater than 1 mm.

9. The battery according to claim 5, characterized in that The connecting soft board (230) is arranged on the side of the hard circuit board (210) facing the battery cell (110), and the connecting soft board (230) includes a fourth part (2304), a fifth part (2305), a sixth part (2306), a seventh part (2307) and an eighth part (2308) connected in sequence. The first through hole (2309) is arranged on the sixth part (2306). The sixth part (2306) is used to connect with the side of the hard circuit board 210 facing the battery cell (110). The fifth part (2305) is used to connect with the upper top surface of the circuit board assembly (200). The seventh part (2307) is used to connect with the lower bottom surface of the circuit board assembly (200). At least one of the fourth part (2304) and the eighth part (2308) is connected to the side of the hard circuit board (210) facing away from the battery cell (110).

10. The battery according to claim 9, characterized in that One of the fourth portion (2304) and the eighth portion (2308) is stacked on the outside of the other.

11. The battery according to any one of claims 2 to 10, characterized in that: The portion of the connecting flexible board (230) connected to the rigid circuit board (210) is arranged on a surface of the rigid circuit board (210) facing away from the battery cell (110), and the connecting flexible board (230) extends along a plane parallel to the rigid circuit board (210); An electronic component (250) is provided on a surface of the rigid circuit board (210) facing the battery core (110).

12. The battery according to claim 1, characterized in that The circuit board assembly (200) comprises two rigid circuit boards (210) spaced apart along the first direction and a flexible circuit board (220); The two rigid circuit boards (210) are both electrically connected to the flexible circuit board (220); the flexible circuit board (220) is provided on a side of the rigid circuit board (210) facing away from the battery core (110); and the electronic component (250) is provided on a side of the rigid circuit board (210) facing the battery core (110); The avoidance component is arranged in the interval space between the two rigid circuit boards (210).

13. The battery according to claim 12, characterized in that The avoidance component comprises a second through hole for the folded corner (1104) to pass through, and the second through hole is arranged at a position in the flexible circuit board (220) opposite to the spacing space between the two rigid circuit boards (210).

14. The battery according to any one of claims 2 to 10, 12 to 13, characterized in that: The avoidance component comprises a support member (260) arranged between two adjacent rigid circuit boards (210), the support member (260) being provided with an avoidance groove recessed in a direction away from the battery core (110), the avoidance groove being used to accommodate the folded corner (1104).

15. The battery according to any one of claims 1 to 10, 12 to 13, characterized in that: Along the length direction of the battery core (110), the ratio of the distance between the circuit board assembly (200) and the top seal portion (1102) to the extension length of the folded corner (1104) along the plane where the side wall (1101b) is located is 0.8-1.

5.

16. An electronic device, characterized in that: The utility model comprises a load and the battery according to any one of claims 1 to 15, wherein the battery is used to supply power to the load.

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