Battery and electronic device

Abstract

The utility model discloses a battery and an electronic device. The battery comprises a battery cell main body, the outer package comprises an end part sealing edge positioned at the end part of the battery cell main body in the length direction and a first side sealing edge positioned at the end part of the battery cell main body in the width direction, and the first side sealing edge and the end part sealing edge are bent towards the battery cell main body; beveled parts are arranged at two corners of the outer package, the beveled parts are connected with the end sealing edge and the first side sealing edge, and the first tab and the second tab of the battery cell main body are positioned in the beveled parts; the connecting piece comprises a tab welding part, a connecting part and a circuit board welding part which are connected in sequence, the tab welding part is connected with the first tab or the second tab, the connecting part is arranged on the side, close to the battery cell main body, of the end sealing edge, and the circuit board welding part is arranged on the side, away from the battery cell main body, of the end sealing edge. According to the battery, the connecting part of the connecting piece is arranged between the end sealing edge of the outer package and the battery cell main body, so that a clamping effect on the connecting piece is formed, and reliable and stable connection between the connecting piece and the tab is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technical field more specifically, relate to a kind of battery. In addition, the utility model further relates to a kind of electronic device comprising the above-mentioned battery. BACKGROUND

[0002] With the rapid development of electronic information technology, various electronic devices are developing towards intelligentization and multifunctionalization, and the energy density requirements of electronic devices for batteries are becoming higher and higher.

[0003] The battery includes a cell, an outer package, and a tab. The outer package includes a top edge and a side edge located on the side of the top edge. In the case of the tab output in the length direction of the battery, the top edge corresponds to the position of the tab. The tab is electrically connected to the protection plate through a connecting piece.

[0004] In related technologies, the connecting piece has a first part connected to the tab and a second part located on the outer surface of the top edge away from the cell body and connected to the protection plate. In this way, the second part of the connecting piece protruding from the top edge has a large proportion. If the welding is not proper or the second part falls off under long-term use, it will directly affect the connection stability of the connecting piece and the tab.

[0005] In summary, how to ensure the stable and reliable connection of the connecting piece and the tab is a problem that needs to be solved by the technical personnel in the field. UTILITY MODEL CONTENT

[0006] Therefore, the utility model aims to provide a battery by arranging the connecting part of the connecting piece between the end edge of the outer package and the cell body, forming a clamping effect on the connecting piece, and ensuring the reliable and stable connection of the connecting piece and the tab. Another object of the utility model is to provide an electronic device comprising the above-mentioned battery.

[0007] To achieve the above-mentioned object, the utility model provides the following technical scheme:

[0008] A battery comprises:

[0009] a cell body;

[0010] an outer package comprising an end edge located at the end of the length direction of the cell body and a first side edge located at the end of the width direction of the cell body, both the first side edge and the end edge being bent towards the cell body;

[0011] both sides of the outer package are provided with a beveling part, the beveling part connects the end edge and the first side edge, and the first tab and the second tab of the cell body are both located in the beveling part;

[0012] The connecting piece comprises a tab welding portion, a connecting portion and a circuit board welding portion connected in sequence, the tab welding portion is connected with the first tab or the second tab, the connecting portion is arranged on one side of the end sealing edge close to the cell body, and the circuit board welding portion is arranged on one side of the end sealing edge away from the cell body.

[0013] Preferably, the outer package is provided with a circuit board assembly on the outer side, the circuit board assembly is provided with a welding area, and the circuit board welding portion is bent relative to the connecting portion and connected with the welding area.

[0014] Preferably, the connecting portion has a first part arranged on the beveling portion, and a second part arranged between the end sealing edge and the cell body, the first part is connected with the tab welding portion, and the second part and the circuit board welding portion are respectively located on two sides of the thickness direction of the end sealing edge.

[0015] Preferably, the second part is provided with a notch near the edge of the circuit board welding portion;

[0016] Or, the first part is provided with a notch near the edge of the tab welding portion, and the second part is provided with a notch near the edge of the circuit board welding portion.

[0017] Preferably, the connecting portion is provided with an insulating layer on both sides of the thickness direction, and the edge of the insulating layer exceeds the connecting portion.

[0018] Preferably, the distance between each edge of the insulating layer and the corresponding edge of the connecting portion is d, and 0.2mm≤d≤1mm.

[0019] Preferably, the insulating piece is further provided with an insulating cavity, and the welding position of the first tab and the tab welding portion or the welding position of the second tab and the tab welding portion is arranged in the insulating cavity.

[0020] Preferably, the cell body is provided with a temperature sensing unit on one side, and the temperature sensing unit is arranged in the beveling portion.

[0021] Preferably, the end of the first side sealing edge and the end of the end sealing edge both have a part extending into the beveling portion.

[0022] The beveling portion has a second side sealing edge, the first side sealing edge and the end sealing edge are arranged perpendicular to the second side sealing edge, and the second side sealing edge connects the first side sealing edge and the end sealing edge.

[0023] Preferably, the tab welding portion is arranged perpendicularly to the second side sealing edge, the first tab or the second tab each has a horizontal portion connected to the main body of the battery and parallel to the second side sealing edge, and a vertical portion connected to the horizontal portion and perpendicular to the second side sealing edge, and the vertical portion is connected to the tab welding portion.

[0024] Preferably, the tab welding portion comprises a first bending portion, a second bending portion and a third bending portion connected to the connecting portion, the first bending portion and the second bending portion are connected through the third bending portion, the first bending portion and the second bending portion are arranged parallel to the second side sealing edge, and the first tab or the second tab is connected to the second bending portion and the third bending portion.

[0025] Preferably, the second side sealing edge is connected with an insulating pad, an upper surface C of the insulating pad is lower than or equal to an upper surface A of the second side sealing edge, and a lower surface D of the insulating pad is higher than a lower surface B of the second side sealing edge to form a shallow pit groove.

[0026] The second bending portion is located in the shallow pit groove, and the first tab or the second tab is located between the lower surface D of the insulating pad and a surface of the first bending portion close to the insulating pad.

[0027] Preferably, the tab welding portion is bent relative to the connecting portion, and the tab welding portion is arranged parallel to the second side sealing edge, and the first tab or the second tab has a horizontal portion connected to the main body of the battery and parallel to the second side sealing edge, and the horizontal portion is connected to the tab welding portion.

[0028] The utility model further provides an electronic device comprising the battery of any one of the above.

[0029] The battery provided by the utility model, including electric core main part, outer package and connecting piece, the outer package includes the end part edge of the end part in the length direction of the electric core main part, the first side edge of the end part in the width direction of the electric core main part, the first side edge and the end part edge are all bent towards the electric core main part, two corners of the outer package are provided with beveling parts, the beveling part connects the end part edge and the first side edge, the end part edge and the first side edge are separated through the beveling part, the first tab and the second tab of the electric core main part are located in the beveling part corresponding to two corners respectively, the setting of the beveling part provides space for the lead-out of the tab, the connecting piece includes the tab welding part, the connecting part, the circuit board welding part connected in turn, wherein the tab welding part connects the first tab or the second tab, the connecting part is arranged on the side of the end part edge close to the electric core main part, that is, the connecting part is arranged between the end part in the length direction of the electric core main part and the end part edge, through the clamping effect of the end part edge and the electric core main part, the reliable stability of the connecting part is ensured, and then the reliable stability of the whole connecting piece is ensured, the circuit board welding part is arranged on the side of the end part edge away from the electric core main part, so as to be connected with the circuit board assembly, the effect that the electric current of the electric core main part is led out is realized, based on the reliable stability of the connecting piece, the circuit board assembly and the circuit board welding part can keep good stable connection, even if the connection between the circuit board assembly and the circuit board welding part falls off, the reliable and stable connection of the tab welding part and the tab can also be ensured.

[0030] The utility model discloses the beneficial effect lies in: the first tab or the second tab is arranged in the beveling part of the outer package, the connecting part of the connecting piece is arranged between the electric core main part and the end part edge, and the stability of the connecting piece is ensured through the clamping effect, and the circuit board welding part connected with the connecting part is welded with the circuit board assembly by extending out of the outer package, which can be relatively stable and reliable, avoids the influence of the connection of the tab welding part and the tab caused by falling off, and ensures the reliable stability of the connection of the tab welding part and the tab. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creating creative labor.

[0032] Figure 1 It is the connecting schematic view of the electric core main part and the connecting piece provided by the utility model;

[0033] Figure 2 It is the connecting schematic view of the electric core main part and the outer package provided by the utility model;

[0034] Figure 3 It is a structural schematic view of the battery provided by the utility model;

[0035] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0036] Figure 5 for Figure 3 Another enlarged view of a portion;

[0037] Figure 6 for Figure 3 Top view;

[0038] Figure 7 for Figure 3 Another enlarged view of a section;

[0039] Figure 8 This is a schematic diagram of the installation of the insulating component provided by this utility model;

[0040] Figure 9 A schematic diagram of a connector provided by this utility model;

[0041] Figure 10 for Figure 9 The left view;

[0042] Figure 11 This is a schematic diagram of another structure of the battery provided by this utility model;

[0043] Figure 12 This is a schematic diagram of another structure of the connector provided by this utility model;

[0044] Figure 13 for Figure 12 A schematic diagram of the assembly state;

[0045] Figure 14 This is another structural schematic diagram of the battery provided by this utility model;

[0046] Figure 15 This is another structural schematic diagram of the connector provided by this utility model.

[0047] Figures 1-15 In the accompanying drawings, the reference numerals include:

[0048] 1-Battery cell body; 2-Outer packaging; 3-First tab; 4-Second tab; 5-Circuit board assembly; 6-Connector; 7-Insulating component; 8-Insulating layer; 9-Temperature sensing unit; 10-External component; 21-Beveled section; 22-First side sealing edge; 23-End sealing edge; 24-Second side sealing edge; 25-Insulating pad; 51-Soldering area; 61-Taper welding part; 611-First bending part; 612-Second bending part; 613-Third bending part; 62-Connecting part; 621-First part; 622-Second part; 63-Circuit board welding part; 64-Notch; 71-Insulating cavity. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] The core of this utility model is to provide a battery in which the tabs are located within the beveled portion, and the connector has a connecting portion located between the cell body and the end seal. The clamping effect ensures the stability of the connector, while the circuit board welding portion, connected to the connecting portion, extends out of the outer packaging and is welded to the circuit board assembly. This ensures relative stability and reliability, preventing detachment from affecting the connection between the tab welding portion and the tab, and guaranteeing the reliable and stable connection between the tab welding portion and the tab. Another core aspect of this utility model is to provide an electronic device including the aforementioned battery.

[0051] The battery provided by this utility model includes a cell body 1, outer packaging 2, and connector 6. Please refer to [reference needed]. Figure 1 , Figure 2 .

[0052] The battery cell body 1 is housed within the outer packaging 2. The outer packaging 2 specifically includes an end seal 23 located at the length end of the battery cell body 1 and a first side seal 22 located at the width end of the battery cell body 1. Both the end seal 23 and the first side seal 22 are bent towards the battery cell body 1 and, after bending, adhere to the battery cell body 1. The aforementioned length and width directions respectively correspond to... Figure 1 and Figure 2 The y-axis and x-axis in the middle.

[0053] The outer packaging 2 has beveled sections 21 at its two corners. The beveled sections 21 are the areas formed after the corners of the outer packaging 2 are beveled, such as... Figure 3 and Figure 4 As shown, the first tab 3 and the second tab 4 of the battery cell body 1 are located in the two beveled portions 21 corresponding to the two corners. The beveled portions 21 connect the end sealing edge 23 and the first side sealing edge 22. Both the first side sealing edge 22 and the end sealing edge 23 are bent toward the battery cell body 1 and fit into the battery cell body 1. The beveled portions 21 separate the end sealing edge 23 and the first side sealing edge 22. When the end sealing edge 23 is bent, it will not form a protrusion or fold with the first side sealing edge 22, and it does not need to occupy the space in the length direction of the battery cell body 1.

[0054] Each beveled portion 21 corresponds to a connector 6, and the connector 6 includes a tab soldering portion 61, a connecting portion 62, and a circuit board soldering portion 63 connected in sequence. Please refer to... Figure 9 ,Figure 12 , Figure 15 The tab welding part 61, the connecting part 62, and the circuit board welding part 63 are integrally formed.

[0055] The connecting part 62 is located on the side of the end seal 23 close to the battery cell body 1, and the circuit board soldering part 63 is located on the side of the end seal 23 away from the battery cell body 1.

[0056] Please refer to Figure 7 , Figure 11 , Figure 14 Specifically, the connecting part 62 is located inside the outer packaging 2, between the end seal 23 and the main body 1 of the battery cell. This arrangement ensures that the connecting part 62 is reliably clamped, guaranteeing the overall stability of the connector 6. Based on this, the electrode welding part 61 is connected to the connecting part 62, and the electrode welding part 61 is connected to the first electrode 3 or the second electrode 4. The current of the main body 1 is drawn out through the electrode and the connector 6. As long as the connecting part 62 is reliably clamped, the connection effect will not be affected by the offset of the connector 6. The connection between the electrode welding part 61 and the electrode is relatively stable and reliable; the electrode here refers to the first electrode 3 or the second electrode 4.

[0057] Furthermore, the circuit board welding part 63 is located on the side of the end seal 23 away from the main body 1 of the battery cell, that is, the circuit board welding part 63 is located outside the outer packaging 2. The circuit board welding part 63 can be welded to the circuit board assembly 5 to realize the connection between the first tab 3 or the second tab 4 and the circuit board assembly 5. Under the premise that the connection part 62 is reliably clamped, the welding of the circuit board welding part 63 and the circuit board assembly 5 can also be relatively reliable and stable, avoiding the problem of unstable connection part 62 caused by detachment or unstable welding, avoiding affecting the connection between the tab welding part 61 and the tab, ensuring the reliable and stable connection between the tab and the tab welding part 61, and ensuring the reliability of the battery current output.

[0058] Based on the above embodiment, a circuit board assembly 5 is provided on the outside of the outer packaging 2. The circuit board assembly 5 is provided with a soldering area 51. The circuit board soldering part 63 is bent relative to the connecting part 62 and connected to the soldering area 51.

[0059] Please refer to Figure 5 The circuit board assembly 5 is specifically connected to the circuit board soldering part 63 via the soldering area 51. For example... Figure 5As shown, the soldering area 51 is located on the side of the circuit board assembly 5. The circuit board soldering part 63 is bent relative to the connecting part 62 to achieve the effect of extending into the soldering area 51 for soldering. The specific angle of the bend of the circuit board soldering part 63 relative to the connecting part 62 is not limited; it can be 180° or other angles, and can be adapted to the position of the soldering area 51. In addition, the circuit board assembly 5 also includes an external component 10 for connecting to external devices to realize the connection between the battery and the external device.

[0060] In this embodiment, taking the circuit board welding part 63 as a flat plate as an example, the specific welding area 51 can be set as a plane that is directly welded to the circuit board welding part 63, or it can be set as a groove with a limiting effect to ensure a reliable connection between the circuit board assembly 5 and the circuit board welding part 63. The specific design can be combined with the actual operation requirements.

[0061] In this embodiment, after welding in the welding area 51 and the circuit board welding part 63, insulation is also required. Specific insulation protection measures can be set by setting a protective shell or protective coating, etc., according to the requirements.

[0062] Based on any of the above embodiments, the connecting portion 62 has a first portion 621 disposed in the beveled portion 21 and a second portion 622 disposed between the end seal 23 and the cell body 1. The first portion 621 is connected to the tab welding portion 61, and the second portion 622 and the circuit board welding portion 63 are respectively located on both sides of the end seal 23 in the thickness direction. The thickness direction here is as follows: Figure 8 The dashed arrow in the middle indicates the meaning.

[0063] Please refer to Figure 9 , Figure 12 , Figure 15 The connecting part 62 has bends to form a first part 621 and a second part 622. The first part 621 and the second side sealing edge 24 are connected by double-sided adhesive or spot adhesive. The first part 621 is welded to the electrode tab welding part 61. The second part 622 is pressed between the end sealing edge 23 and the cell body 1 to ensure the overall reliability and stability of the connecting part 6.

[0064] Please refer to Figure 8 When installing connector 6, in the initial state, the circuit board soldering part 63 extends out of the outer packaging 2 relative to the length direction of the battery cell body 1. At this time, the circuit board soldering part 63 has a certain bend relative to the connector 62; please refer to... Figure 7 During assembly, the circuit board soldering part 63 needs to be further bent and connected to the circuit board assembly 5.

[0065] In this embodiment, the connecting part 62 is divided into a first part 621 and a second part 622. The first part 621 fits against the side of the corresponding oblique cut part 21 of the battery cell body 1 to provide a positioning effect, and the second part 622 can be reliably clamped between the battery cell body 1 and the end sealing edge 23 to ensure the reliable stability of the connecting part 6.

[0066] Based on any of the above embodiments, a notch 64 is provided on the edge of the second part 622 near the edge of the circuit board soldering part 63;

[0067] Alternatively, notches 64 are provided on the edges of the first part 621 near the electrode welding part 61 and the second part 622 near the edge of the circuit board welding part 63.

[0068] Please refer to Figure 9 , Figure 12 , Figure 15 By providing notches 64 on the second part 622 and the first part 621, the connector 6 is prevented from tearing when it is bent, thus ensuring the reliability of the connector 6.

[0069] In this embodiment, the notch 64 can be square, circular, arc-shaped, or irregular in shape, which can prevent tearing and ensure the overall reliability of the connector 6.

[0070] In one embodiment, a notch 64 is provided at the edge of the first portion 621 near the edge of the circuit board soldering portion 63; such as Figures 7 to 9 As shown. When the first part 621 of the tab welding portion 61 and the first part 621 of the connecting portion 62 are parallel, and the first tab 3 or the second tab 4 is bent and welded to the tab welding portion 61, the tab welding portion 61 is not formed by bending. At this time, a notch 64 is only provided at the edge of the second part 622 of the connecting portion 62 near the edge of the circuit board welding portion 63. This position is close to the bending area. By providing the notch 64, the tearing of the connector 6 can be avoided, thus ensuring the reliability of the connector 6.

[0071] In one embodiment, notches 64 are provided at the edge of the first portion 621 near the edge of the tab soldering portion 61 and at the edge of the second portion 622 near the edge of the circuit board soldering portion 63. Please refer to [reference needed]. Figure 12 and Figure 15 If the first part 621 of the tab welding part 61 and the connecting part 62 forms an angle, that is, it has a bending area; and the second part 622 of the circuit board welding part 63 and the connecting part 62 also forms an angle, it also has a bending area. Therefore, notches 64 need to be provided at both bending areas to prevent the parts from tearing when bending, so as to ensure the reliability of the connector 6.

[0072] It should be further noted that the notch 64 is positioned near the bending area. For example, if the bending area is located above the connecting portion 62, then the notch 64 is positioned at the upper edge of the connecting portion 62. Here, "upper" refers to... Figure 9 , Figure 12 , Figure 15 In terms of location.

[0073] Based on any of the above embodiments, please refer to Figure 9 , Figure 10 An insulating layer 8 is provided on both sides of the connecting portion 62 in the thickness direction, and the edge of the insulating layer 8 extends beyond the connecting portion 62. Here, the thickness direction, taking the second part 622 as an example, is... Figure 9 The direction indicated by 't' is shown in the diagram. The thickness direction of the first part 621 is similar to 't', and will not be shown in detail here.

[0074] The insulating layer 8 is specifically arranged on the first part 621 and the second part 622 to ensure the overall insulation of the connection part 62. Since the connector 6 is an electrical connector, in addition to the electrode welding part 61 and the circuit board welding part 63, protective measures also need to be set on the connection part 62. The setting of the insulating layer 8 reduces the risk of short circuit caused by the contact between the connector 6 and other components, such as the battery cell body 1.

[0075] Based on any of the above embodiments, please refer to Figure 10 The distance by which each edge of the insulating layer 8 extends beyond the corresponding edge of the connecting part 62 is d, 0.2mm≤d≤1mm, which ensures reliable insulation protection while not interfering with the welding operations of the electrode welding part 61 and the electrode, and the welding area 51 of the circuit board welding part 63 and the circuit board assembly.

[0076] Based on any of the above embodiments, please refer to Figure 8 It also includes an insulating component 7, which has an insulating cavity 71, where the welding part of the first electrode 3 and the electrode welding part 61, or the welding part of the second electrode 4 and the electrode welding part 61, is located in the insulating cavity 71.

[0077] In addition to the connector 6, to prevent short circuits between the connector 6 and the sealing edge of the battery cell body 1, an insulating component 7 with an insulating cavity 71 is provided. Figure 14 and Figure 15 For example, the insulating cavity 71 can be configured as follows: Figure 8 As shown in the U-shape, after the first tab 3 or the second tab 4 is connected to the tab welding part 61, the insulating part 7 is placed on the welding part of the first tab 3 and the tab welding part 61, or on the welding part of the second tab 4 and the tab welding part 61, to provide insulation protection for the connection part, avoid contact short circuit, and ensure safety.

[0078] In practical applications, the shape of the insulating cavity 71 is not limited to U-shape, but can also be other shapes, as long as the insulating cavity 71 completely covers the welding part of the second electrode 4 and the electrode welding part 61, or completely covers the welding part of the first electrode 6 and the electrode welding part 61, and ensures a reliable insulation and protection effect.

[0079] Based on any of the above embodiments, a temperature sensing unit 9 is provided on one side of the battery cell body 1, and the temperature sensing unit 9 is located in the oblique cut portion 21.

[0080] Please refer to Figure 6 The temperature sensing unit 9 is located in the oblique cut portion 21. By utilizing the space of the oblique cut portion 21 to place the temperature sensing unit 9, the influence of the heat generated by the circuit board assembly 5 on the temperature sensing unit 9 is reduced, ensuring the reliability and accuracy of battery temperature detection.

[0081] Based on any of the above embodiments, the end of the first side sealing edge 22 and the end of the end sealing edge 23 both have a portion extending into the oblique cut portion 21;

[0082] The beveled portion 21 has a second side sealing edge 24. The first side sealing edge 22 and the end sealing edge 23 are both arranged perpendicular to the second side sealing edge 24. The second side sealing edge 24 connects the first side sealing edge 22 and the end sealing edge 23.

[0083] Please refer to Figure 4 Since the oblique cut 21 is a structure formed by the two corners of the outer packaging, and the extension line of the end seal 23 and the extension line of the first side seal 22 intersect, the oblique cut 21 is specifically the area formed by the second side seal 24, the part of the first side seal 22 that extends into the oblique cut 21 and the part of the end seal 23 that extends into the oblique cut 21.

[0084] Both the first side sealing edge 22 and the end sealing edge 23 are perpendicular to the second side sealing edge 24, and the second side sealing edge 24 connects the first side sealing edge 22 and the end sealing edge 23. During installation, the connector 6 extends along the step of the second side sealing edge 24 to the step of the end sealing edge 23. After bending the end sealing edge 23 of the outer packaging 2, the second part 622 of the connector 62 is pressed between the end sealing edge 23 and the battery cell body 1. The first part 621 of the connector 62 is bonded to the step of the second side sealing edge 24 using double-sided adhesive, and the second part 622 of the connector 62 is bonded to the step of the end sealing edge 23 using double-sided adhesive. This ensures the stability and reliability of the connector 62 within the outer packaging 2, and guarantees a reliable connection between the connector 6's tab welding part 61, circuit board welding part 63, and the corresponding tab and circuit board assembly 5. The step here is a structure formed when the outer packaging 2 packages the battery cell body 1, providing space for the connection and positioning of the connector 62.

[0085] In this embodiment, the second side sealing edge 24 connects the first side sealing edge 22 and the end sealing edge 23. The second part 622 of the connector 6 is located between the end sealing edge 23 and the cell body 1. During assembly, the end sealing edge 23 is bent to press the second part 622 onto the end of the cell body 1.

[0086] Based on any of the above embodiments, please refer to Figure 7 , Figure 9 The first tab 3 or the second tab 4 each has a horizontal portion connected to the main body 1 and parallel to the second side seal 24, and a vertical portion connected to the horizontal portion and perpendicular to the second side seal 24. The vertical portion is connected to the tab welding portion 61.

[0087] The first electrode 3 and the second electrode 4 have the same structure but opposite polarities. For Figure 9 The connector 6 shown has a tab with a horizontal part and a vertical part connected thereto. The horizontal part extends from the cell body 1, and the vertical part is bent at 90° relative to the horizontal part so that it can be connected to the tab welding part 61, which is also vertically arranged.

[0088] Taking the connection of the tab welding part 61 to the first tab 3 as an example, the first tab 3 extends out of the oblique cut part 21 and is then bent to be parallel to the tab welding part 61 before welding is performed on the first tab 3 and the tab welding part 61. In this case, there is no restriction on whether the first tab 3 is located between the tab welding part 61 and the cell body 1, or whether the tab welding part 61 is located between the first tab 3 and the cell body 1, as long as the choice is made to facilitate the welding operation.

[0089] like Figure 7 As shown, in this case, the vertical part of the first tab 3 is located between the side of the cell body 1 and the tab welding part 61, and the first part 621 of the connecting part 62 is bonded to the step of the second side sealing edge 24, which can ensure a reliable and stable connection between the first tab 3 and the tab welding part 61.

[0090] However, it should be noted that after the first electrode tab 3 and the electrode tab welding part 61 are welded, the insulating part 7 needs to be installed so that the first electrode tab 3 and the electrode tab welding part 61 are both located in the insulating cavity 71 of the insulating part 7, so as to form a reliable insulating protection effect.

[0091] The connection between the second electrode tab 4 and the electrode tab welding part 61 will not be described in detail in this embodiment. For the specific process, please refer to the connection process between the first electrode tab 3 and the electrode tab welding part 61 described above.

[0092] Based on any of the above embodiments, please refer to Figure 11 , Figure 12The electrode welding part 61 includes a first bending part 611, a second bending part 612, and a third bending part 613 that connect to the connecting part 62. The first bending part 611 and the second bending part 612 are connected through the third bending part 613. The first bending part 611 and the second bending part 612 are both arranged parallel to the second side sealing edge 24. The first electrode ear 3 or the second electrode ear 4 connects the second bending part 612 and the third bending part 613.

[0093] Please refer to Figure 11 , Figure 14 The electrode tab welding portion 61 is bent relative to the first portion 621 of the connecting portion 62 to form a first bent portion 611, a second bent portion 612, and a third bent portion 613. Taking the connection between the first electrode tab 3 and the electrode tab welding portion 61 as an example, the first bent portion 611 and the second bent portion 612 are both arranged parallel to the second side sealing edge 24, that is, the first bent portion 611 and the second bent portion 612 are both arranged parallel to the extension direction of the first electrode tab 3. In this way, a notch 64 needs to be provided at the edge of the first portion 621 of the connecting portion 62 near the electrode tab welding portion 61 to prevent the connector 6 from tearing due to bending, thus ensuring the reliability of the connector 6.

[0094] In this manner, the first electrode tab 3 does not need to be bent after extending from the oblique cut portion 21. The second bent portion 612 and the third bent portion 613 formed by bending the electrode tab welding portion 61 are used to connect the first electrode tab 3.

[0095] After welding the second bend 612 and the third bend 613 to the first tab 3, the insulating part 7 also needs to cover the welding area of ​​the first tab 3 to the second bend 612 and the third bend 613 to avoid short circuits and ensure the effectiveness of insulation protection.

[0096] The connection of the second electrode 4, the second bend 612, and the third bend 613 will not be described in detail in this embodiment. For the specific process, please refer to the connection process of the first electrode 3, the second bend 612, and the third bend 613 described above.

[0097] Based on any of the above embodiments, please refer to Figure 11 The second side sealing edge 24 is connected to an insulating pad 25. Specifically, the insulating pad 25 is wrapped around the outer periphery of the metal part of the electrode tab and is heat-fused to the second side sealing edge 24. The metal part of the electrode tab is the component used to connect the battery cell body 1 to lead out the current of the battery cell body 1.

[0098] The upper surface C of the insulating pad 25 is lower than or equal to the upper surface A of the second side seal 24, and the lower surface D of the insulating pad 25 is higher than the lower surface B of the second side seal 24 to form a shallow pit.

[0099] The second bend 612 is located in a shallow pit, and the first tab 3 or the second tab 4 is located between the lower surface D of the insulating pad 25 and the surface of the first bend 611 close to the insulating pad 25.

[0100] If the upper surface C of the insulating pad 25 is lower than the upper surface A of the second side seal 24, a groove can also be formed between the upper surface C of the insulating pad 25 and the upper surface A of the second side seal 24. The electrode tab and electrode tab welding part 61 are installed using the thickness space of the second side seal 24, making full use of the battery's own space and improving space utilization. The electrode tab here can be either the first electrode tab 3 or the second electrode tab 4.

[0101] In one specific embodiment, the second bend 612 is located within the shallow groove formed by the lower surface D of the insulating pad 25 and the lower surface B of the second side sealing edge 24. Please refer to [reference needed]. Figure 11 Taking the welding of the first electrode lug 3 and the electrode lug welding part 61 as an example, the electrode lug welding part 61 extends out of the second side sealing edge 24. The specific length of the extension is such that the first electrode lug 3 and the electrode lug welding part 61 can be bent after welding to extend into the shallow pit. After the connecting part 62, the step of the second side sealing edge 24, and the step of the end sealing edge 23 of the connector 6 are bonded with double-sided adhesive, the second bending part 612, the third bending part 613 and the first electrode lug 3 overlap. After the first electrode lug 3, the second bending part 612, and the third bending part 613 are welded, they are folded downward into the shallow pit, making full use of the thickness space of the second side sealing edge 24 and reducing the thickness dimension of the welding area of ​​the first electrode lug 3. In addition, this method can reduce the difficulty of folding the electrode lug welding part 61 and the first electrode lug 3 after welding, making assembly easier.

[0102] Based on any of the above embodiments, please refer to Figure 14 , Figure 15 The tab welding portion 61 is bent relative to the connecting portion 62, and the tab welding portion 61 is arranged parallel to the second side sealing edge 24. The first tab 3 or the second tab 4 has a horizontal portion connected to the battery cell body 1 and parallel to the second side sealing edge 24, and the horizontal portion is connected to the tab welding portion 61.

[0103] The tab welding portion 61 is bent relative to the first portion 621 so that the tab welding portion 61 is arranged parallel to the second side sealing edge 24. In this case, the first tab 3 or the second tab 4 can be directly connected to the tab welding portion 61 after being led out from the cell body 1. After welding is completed, an insulating part 7 is sleeved at the connection between the first tab 3 and the tab welding portion 61, and between the second tab 4 and the tab welding portion 61, to ensure the insulation protection effect of the welding portion.

[0104] In addition to the battery described above, this utility model also provides an electronic device, which includes the battery described in any of the above embodiments. Specifically, the electronic device can be any device that uses a battery.

[0105] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0106] The present invention provides a detailed description of a battery and electronic device. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery, characterized in that, include: Battery cell body (1); The outer packaging (2) includes an end seal (23) located at the end of the battery cell body (1) in the length direction and a first side seal (22) located at the end of the battery cell body (1) in the width direction. Both the first side seal (22) and the end seal (23) are bent toward the battery cell body (1). The outer packaging (2) has beveled portions (21) on both sides, the beveled portions (21) connect the end seal (23) and the first side seal (22), and the first tab (3) and the second tab (4) of the battery cell body (1) are both located inside the beveled portions (21); The connector (6) includes a tab welding part (61), a connecting part (62) and a circuit board welding part (63) connected in sequence. The tab welding part (61) is connected to the first tab (3) or the second tab (4). The connecting part (62) is located on the side of the end seal (23) close to the cell body (1). The circuit board welding part (63) is located on the side of the end seal (23) away from the cell body (1).

2. The battery according to claim 1, characterized in that, The outer packaging (2) is provided with a circuit board assembly (5) on the outside. The circuit board assembly (5) is provided with a soldering area (51). The circuit board soldering part (63) is bent relative to the connecting part (62) and connected to the soldering area (51).

3. The battery according to claim 2, characterized in that, The connecting part (62) has a first part (621) disposed on the oblique cut part (21) and a second part (622) disposed between the end seal (23) and the battery cell body (1). The first part (621) is connected to the tab welding part (61), and the second part (622) and the circuit board welding part (63) are respectively located on both sides of the thickness direction of the end seal (23).

4. The battery according to claim 3, characterized in that, The second part (622) has a notch (64) near the edge of the circuit board soldering part (63); Alternatively, notches (64) may be provided on the edge of the first part (621) near the edge of the tab welding part (61) and on the edge of the second part (622) near the edge of the circuit board welding part (63).

5. The battery according to claim 1, characterized in that, An insulating layer (8) is provided on both sides of the connecting part (62) in the thickness direction, and the edge of the insulating layer (8) extends beyond the connecting part (62).

6. The battery according to claim 5, characterized in that, The distance by which each edge of the insulating layer (8) extends beyond the corresponding edge of the connecting portion (62) is d, where 0.2mm≤d≤1mm.

7. The battery according to claim 6, characterized in that, It also includes an insulating component (7), which has an insulating cavity (71), wherein the welding part of the first electrode (3) and the electrode welding part (61), or the welding part of the second electrode (4) and the electrode welding part (61) is located in the insulating cavity (71).

8. The battery according to claim 1, characterized in that, A temperature sensing unit (9) is provided on one side of the battery cell body (1), and the temperature sensing unit (9) is located in the oblique cut (21).

9. The battery according to any one of claims 1 to 8, characterized in that, The ends of the first side sealing edge (22) and the end sealing edge (23) both have portions extending into the oblique cut portion (21); The oblique cut (21) has a second side sealing edge (24), the first side sealing edge (22) and the end sealing edge (23) are both arranged perpendicular to the second side sealing edge (24), and the second side sealing edge (24) connects the first side sealing edge (22) and the end sealing edge (23).

10. The battery according to claim 9, characterized in that, The electrode welding part (61) is arranged perpendicular to the second side seal (24). The first electrode (3) or the second electrode (4) has a horizontal part connected to the cell body (1) and parallel to the second side seal (24), and a vertical part connected to the horizontal part and perpendicular to the second side seal (24). The vertical part is connected to the electrode welding part (61).

11. The battery according to claim 9, characterized in that, The electrode welding part (61) includes a first bending part (611), a second bending part (612), and a third bending part (613) connecting the connecting part (62). The first bending part (611) and the second bending part (612) are connected through the third bending part (613). The first bending part (611) and the second bending part (612) are both arranged parallel to the second side sealing edge (24). The first electrode (3) or the second electrode (4) connects the second bending part (612) and the third bending part (613).

12. The battery according to claim 11, characterized in that, The second side seal (24) is connected to an insulating pad (25), the upper surface C of the insulating pad (25) is lower than or equal to the upper surface A of the second side seal (24), and the lower surface D of the insulating pad (25) is higher than the lower surface B of the second side seal (24) to form a shallow pit. The second bend (612) is located in the shallow pit, and the first tab (3) or the second tab (4) is located between the lower surface D of the insulating pad (25) and the surface of the first bend (611) near the insulating pad (25).

13. The battery according to claim 9, characterized in that, The tab welding portion (61) is bent relative to the connecting portion (62), and the tab welding portion (61) is arranged parallel to the second side seal (24). The first tab (3) or the second tab (4) has a horizontal portion connected to the cell body (1) and parallel to the second side seal (24). The horizontal portion is connected to the tab welding portion (61).

14. An electronic device, characterized in that, Includes the battery as described in any one of claims 1 to 13.

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