Batteries and electronic devices

Abstract

The present application discloses a battery and an electronic device, belonging to the field of battery technology. The battery includes a battery cell and a protective plate assembly, the battery cell includes a battery cell body and a pole ear, the battery cell body is provided with a top seal, a first pit and a second pit, the first pit and the second pit are respectively located on two opposite sides of the top seal, the pole ear includes a first part and a second part connected to the first part, the first part is arranged in the top seal, and the second part is bent into the first pit; the protective plate assembly is located in the second pit, and the protective plate assembly is electrically connected to the second part of the pole ear through a connector. In this scheme, the space of the first pit and the second pit of the battery body can be used to accommodate the protective plate assembly and the pole ear respectively, which is conducive to reducing the packaging volume of the battery head, thereby reducing the space occupied by the battery head, increasing the proportion of the battery cell, and is conducive to improving the capacity of the battery.

Description

Technical Field

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

[0002] With the advent of the 5G era, the increase in display size of electronic devices, multi-camera high-definition photography, high-definition video playback, multi-communication frequency band compatibility, high-speed communication and computing and other hardware and functional improvements have put forward higher requirements on the battery life of electronic devices, and thus the requirements for the capacity of batteries in electronic devices are also getting higher and higher.

[0003] However, the head packaging structure of the existing battery takes up more space, making the space occupied by the battery cell relatively low, thereby affecting the battery capacity. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a battery and an electronic device that can solve the problem in the related art that the head of the battery occupies a large space and affects the battery capacity.

[0005] In a first aspect, an embodiment of the present application provides a battery, comprising:

[0006] A battery cell, the battery cell comprising a battery cell body and a tab, the battery cell body being provided with a top seal, a first pit and a second pit, the first pit and the second pit being respectively located on two opposite sides of the top seal, the tab comprising a first part and a second part connected to the first part, the first part being arranged in the top seal, and the second part being bent into the first pit;

[0007] A protection plate assembly is located in the second pit, and the protection plate assembly is electrically connected to the second portion of the pole lug through a connector.

[0008] In a second aspect, an embodiment of the present application further provides an electronic device, comprising the above-mentioned battery.

[0009] In an embodiment of the present application, a battery includes a cell and a protection plate assembly, the cell includes a cell body and a tab, the cell body is provided with a top seal, a first pit and a second pit, the first pit and the second pit are respectively located on opposite sides of the top seal, the first part of the tab is arranged in the top seal, the protection plate assembly is electrically connected to the second part of the tab through a connector to achieve electrical conduction between the protection plate assembly and the tab. The protection plate assembly is located in the second pit, and the second part of the tab is located in the first pit. In this way, the space of the first pit and the second pit of the cell body can be used to accommodate the protection plate assembly and the tab, respectively, which is conducive to reducing the packaging volume of the battery head, thereby reducing the space occupied by the battery head, increasing the proportion of the cell, and is conducive to improving the capacity of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is one of the structural schematic diagrams of the battery disclosed in the embodiment of the present application;

[0011] Figure 2 It is a schematic diagram of the structure of the battery cell disclosed in the embodiment of the present application;

[0012] Figure 3 This is the second structural schematic diagram of the battery disclosed in the embodiment of the present application (when the tabs and the connector are not bent);

[0013] Figure 4 This is the third structural schematic diagram of the battery disclosed in the embodiment of the present application (after the tabs and connectors are bent).

[0014] Description of reference numerals:

[0015] 100 - battery cell body; 110 - top seal; 120 - first pit; 130 - second pit;

[0016] 140-ear; 141-first part; 142-second part; 143-third part;

[0017] 150 - first insulating adhesive member; 160 - second insulating adhesive member;

[0018] 200-protection board assembly; 210-protection board; 220-electronic device;

[0019] 300-connecting member; 310-first connecting portion; 320-second connecting portion; 330-third connecting portion;

[0020] 400-insulation protection parts;

[0021] 500-insulation pad;

[0022] 600-connector;

[0023] 700-Flexible connector. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] The battery and electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0027] refer to Figure 1-Figure 4 A battery provided in an embodiment of the present application may include a battery cell and a protection plate assembly 200. The battery cell may include a battery cell body 100 and a tab 140. The battery cell body 100 may be provided with a top seal 110, a first pit 120 and a second pit 130, and the first pit 120 and the second pit 130 may be respectively located on opposite sides of the top seal 110. The tab 140 may include a first portion 141 and a second portion 142, the first portion 141 is connected to the second portion 142, the first portion 141 may be provided in the top seal 110, the first portion 141 is electrically connected to the battery cell body 100, and the second portion 142 may be bent into the first pit 120. The protection plate assembly 200 may be located in the second pit 130, and the protection plate assembly 200 may be electrically connected to the second portion 142 of the tab 140 through a connector 300 to achieve electrical conduction between the protection plate assembly 200 and the tab 140.

[0028] Here, the protection board assembly 200 can detect the use status of the battery to prevent overcharging, overdischarging or short circuit, thereby improving the safety of the battery.

[0029] Since the protection plate assembly 200 is located in the second pit 130 and the second part 142 of the pole ear 140 is located in the first pit 120, the space of the first pit 120 and the second pit 130 of the battery cell body 100 can be used to accommodate the protection plate assembly 200 and the pole ear 140 respectively, which is beneficial to reducing the packaging volume of the battery head, thereby reducing the space occupied by the battery head, increasing the proportion of the battery cell, and helping to improve the capacity of the battery.

[0030] Optionally, the connecting member 300 may be a nickel sheet or other metal conductive members.

[0031] In an optional embodiment of the present application, the connector 300 may include a first connecting portion 310 and a second connecting portion 320, the second connecting portion 320 may be connected to the first connecting portion 310, the first connecting portion 310 may be bent into the first pit 120 and electrically connected to the second portion 142 to achieve electrical connection between the connector 300 and the pole ear 140; and the second connecting portion 320 may be located in the second pit 130 and electrically connected to the protection plate assembly 200 to achieve electrical connection between the connector 300 and the protection plate assembly 200, thereby achieving electrical connection between the pole ear 140 and the protection plate assembly 200.

[0032] Since the first connecting portion 310 is located in the first pit 120 and the second connecting portion 320 is located in the second pit 130, the connecting member 300 can be distributed in the first pit 120 and the second pit 130. Compared with the manner in which the connecting member 300 is located as a whole in the second pit 130, the protection plate assembly 200 can be further prevented from exceeding the thickness of the battery cell body, thereby further reducing the packaging volume of the battery head and reducing the space occupied by the battery head.

[0033] In other optional embodiments, the connector 300 may not include the first connector 310 and the second connector 320 , and both ends of the connector 300 may be connected to the top end of the second portion 142 and the top end of the protection plate assembly 200 , respectively.

[0034] In an optional embodiment, along the thickness direction of the battery cell, the sum of the thickness of the second portion 142 and the thickness of the first connection portion 310 may be less than or equal to the depth of the first pit 120, that is, the second portion 142 of the tab 140 and the first connection portion 310 of the connector 300 will not exceed the first pit 120, and the sum of the thickness of the protection plate assembly 200 and the thickness of the second connection portion 320 may be less than or equal to the depth of the second pit 130, that is, the protection plate assembly 200 and the second connection portion 320 of the connector 300 will not exceed the second pit 130. In this way, it can be ensured that the head of the battery will not exceed the thickness of the battery cell body 100, thereby further reducing the packaging volume of the battery head.

[0035] In other embodiments, along the thickness direction of the battery cell, the sum of the thickness of the second portion 142 and the thickness of the first connecting portion 310 is greater than the depth of the first pit 120 , and the sum of the thickness of the protective plate assembly 200 and the thickness of the second connecting portion 320 is greater than the depth of the second pit 130 .

[0036] In an optional embodiment of the present application, Figure 1 and Figure 3As shown, the first connecting portion 310 and the second portion 142 can be closely connected, so that the first connecting portion 310 can provide certain support and reinforcement for the pole ear 140 , thereby improving the strength of the pole ear 140 , thereby reducing the risk of mechanical fatigue fracture of the pole ear 140 and increasing the service life of the battery.

[0037] Optionally, the second connection portion 320 may be connected to a portion of the protection plate assembly 200 in a conforming manner. In this way, the connection strength between the connector 300 and the protection plate assembly 200 may be improved, and the connector 300 may be prevented from being disconnected from the protection plate assembly 200 when the pole lug 140 exerts an excessive force.

[0038] Optionally, the protection plate assembly 200 may include a protection plate 210 and an electronic device 220 disposed on the protection plate 210 , and the protection plate 210 may be electrically connected to the electronic device 220 , and the protection plate 210 and the electronic device 220 may form a protection circuit.

[0039] Here, the second connection portion 320 may be closely connected to the protection plate 210 .

[0040] In addition, the battery may further include a connector 600, which is used to electrically connect to an external component, such as a charger, etc. The connector 600 may be electrically connected to the protection board assembly 200 via a flexible connector 700, which may be a FPC (Flexible Printed Circuit).

[0041] In other embodiments, only the end of the first connection portion 310 is connected to the second portion 142. Specifically, the end of the first connection portion 310 can be connected to the end of the second portion 142; or, the first connection portion 310 can be connected to the second portion 142 via a weld, and the first connection portion 310 and the second portion 142 are not connected in a fitting manner.

[0042] Similarly, only the end of the second connection part 320 is connected to the protection plate assembly 200. Specifically, the end of the second connection part 320 can be connected to the edge of the protection plate assembly 200; or, the second connection part 320 can be connected to the protection plate assembly 200 through a weld, and the second connection part 320 is not connected to the protection plate assembly 200 in a fitting manner.

[0043] In an optional embodiment, the tab 140 may further include a third portion 143, the two ends of which may be connected to the first portion 141 and the second portion 142, respectively, so that the tab 140 forms a U-shaped structure; the connector 300 may further include a third connecting portion 330, the two ends of which may be connected to the first connecting portion 310 and the second connecting portion 320, respectively, so that the connector 300 forms a U-shaped structure, and the third portion 143 may be partially fitted and connected to the third connecting portion 330. In this way, the tab 140 and the connector 300 may form a double U-shaped structure, and since the third portion 143 is partially fitted and connected to the third connecting portion 330, the tab 140 may be further supported and strengthened, thereby improving the strength of the tab 140.

[0044] Of course, in other embodiments, the third portion 143 may not be closely connected to the third connecting portion 330 , and there may be a gap between the two.

[0045] In an optional embodiment, the tab 140 may be provided with a first bending indentation, and the connector 300 may be provided with a second bending indentation, such as Figure 3 As shown, the first bending indentation and the second bending indentation can be arranged as follows Figure 3 At the dotted line position shown, specifically, the first bending indentation can be set at the connection between the first part 141 and the third part 143, and the second bending indentation can be set at the connection between the second connecting part 320 and the third connecting part 330. In this way, the tab 140 and the connector 300 can be bent more easily, which is beneficial to saving the operator's physical strength.

[0046] In an optional embodiment of the present application, Figure 1 As shown, the battery may further include an insulating protective member 400, which may surround the first connection portion 310 and the outer periphery of the protection plate assembly 200, and the insulating protective member 400 may be fitted and connected to the outer periphery of the first connection portion 310 and the protection plate assembly 200, and the two ends of the insulating protective member 400 may be respectively connected to the bottom of the first pit 120 and the bottom of the second pit 130. In this way, the insulating protective member 400 can cover the head of the battery to achieve a stable packaging effect, and the insulating protective member 400 can play an insulating and protective role on the tab 140, the connector 300 and the protection plate assembly 200.

[0047] Optionally, the insulating protection member 400 may be an insulating protective tape.

[0048] In other embodiments, the battery may not include the insulating protection member 400 .

[0049] In an optional embodiment, if Figure 1As shown, the second part 142 can be connected to the top seal 110 through the first insulating adhesive 150, and the second connecting part 320 can be connected to the top seal 110 through the second insulating adhesive 160. In this way, the stability of the connection between the pole ear 140 and the top seal 110 and the stability of the connection between the second connecting part 320 and the top seal 110 can be improved, thereby improving the stability of the fixation of the protection plate assembly 200, preventing the protection plate assembly 200 from falling off, and further improving the packaging effect of the protection plate assembly 200. In addition, it can also play an insulating role between the pole ear 140 and the protection plate assembly 200 and the top seal 110, so as to insulate and protect the battery cell body 100, and prevent the aluminum layer of the battery cell aluminum-plastic film from being exposed and contacting with the metal, causing the battery cell body 100 to be corroded.

[0050] Here, the first insulating adhesive member 150 and the second insulating adhesive member 160 may both be double-sided adhesives.

[0051] In addition, an insulating pad 500 may be disposed between the protection plate assembly 200 and the bottom of the second pit 130 , so that the insulating pad 500 can play a buffering and protective role for the protection plate assembly 200 .

[0052] Optionally, the insulating pad 500 may be a silicone pad, or other elastic or flexible objects.

[0053] In other embodiments, the insulating pad 500 is not disposed between the protection plate assembly 200 and the bottom of the second pit 130 .

[0054] In an optional embodiment, an insulating member may be provided at the tail of the cell body 100 to insulate and protect the cell body 100 and prevent the aluminum layer of the cell aluminum-plastic film from being exposed and contacting with metal to cause corrosion of the cell body 100. Here, the insulating member may be high-temperature insulating tape.

[0055] In an optional embodiment of the present application, the battery may include at least two tabs 140, and each tab 140 may be spaced apart along the length direction of the top seal 110. In this way, the flow conducting cross-sectional area may be larger, large current charging and discharging may be adapted, fast charging may be achieved, and the internal resistance of the battery may be effectively reduced.

[0056] Optionally, the battery may include two pole tabs 140 , or the battery may include three pole tabs 140 or more than three pole tabs 140 .

[0057] Of course, the battery may include only one tab 140 .

[0058] In an optional embodiment, the tab 140 may include a negative tab and at least two positive tabs, and the negative tab and each positive tab may be spaced apart along the length direction of the top seal 110 to avoid contact between the negative tab and each positive tab to form a short circuit. In this way, by providing a negative tab and at least two positive tabs on the battery body 100, a multi-tab "at least two-way charging" effect of at least two positive and one negative tabs can be formed, which can effectively reduce impedance and heat loss, and speed up fast charging.

[0059] In addition, the negative electrode tab and each positive electrode tab may include a first portion 141 and a second portion 142 , and the second portion 142 of the negative electrode tab and the second portion 142 of the positive electrode tab may be electrically connected to the protection plate assembly 200 through the connector 300 , respectively, to form a conductive circuit.

[0060] The first portion 141 of the negative electrode ear and the first portion 141 of the positive electrode ear can both be arranged in the top seal 110, the second portion 142 of the negative electrode ear and the second portion 142 of the positive electrode ear can both be bent into the first pit 120, and the first connecting portion 310 of each connecting member 300 can be respectively fitted and connected with the second portion 142 of the negative electrode ear and the second portion 142 of the positive electrode ear.

[0061] Optionally, the positive electrode lugs and the negative electrode lugs in each electrode lug may be arranged alternately, so that the distance of electron conduction may be reduced.

[0062] In other embodiments, the tab 140 may include a negative tab and a positive tab.

[0063] A battery provided in an embodiment of the present application includes a battery cell and a protection plate assembly 200, wherein a top seal 110, a first pit 120 and a second pit 130 are provided at the head of a battery cell body 100 of the battery cell, wherein the first pit 120 may be a shallow pit, and the second pit 130 may be a deep pit, wherein a first portion 141 of a pole ear 140 of the battery cell is provided in the top seal 110, and a second portion 142 of the pole ear 140 is bent into the shallow pit, and the protection plate assembly 200 is located in the deep pit, and a first connection portion 310 of a connector 300 is bent into the shallow pit and is fitted and connected to the second portion 142 of the pole ear 140 by laser welding, and a second connection portion 320 of the connector 300 is located in the deep pit and is fitted and connected to the protection plate 210 of the protection plate assembly 200 by laser welding. Thus, since the second portion 142 of the pole ear 140 and the first connection portion 310 of the connector 300 are both bent in the shallow pit, the thickness of the head of the battery can be reduced, thereby improving the capacity density of the battery.

[0064] Furthermore, when performing the packaging operation of the head of the battery, the second connection part 320 of the connector 300 can be welded to the protection plate assembly 200 and then placed in the deep pit, and then the first connection part 310 of the connector 300 can be welded to the second part 142 of the pole ear 140, and then the first connection part 310 of the connector 300 and the second part 142 of the pole ear 140 can be bent together to be bent into the shallow pit. In this way, the second part 142 of the pole ear 140 and the first connection part 310 of the connector 300 can be placed in the shallow pit by only one bending, which can reduce the number of bending times and the force on the protection plate assembly 200, thereby reducing the risk of stress damage to the electronic device 220 on the protection plate assembly 200, which is conducive to extending the service life of the battery.

[0065] In addition, the pole lug 140 and the connector 300 form a double U-shaped structure, the second portion 142 of the pole lug 140 is fitly connected to the first connection portion 310 of the connector 300, and the third portion 143 of the pole lug 140 is partially connected to the third connection portion 330 of the connector 300. During the battery reliability test, a portion of the pulling force on the pole lug 140 caused by the movement of the internal winding core of the battery can be transmitted to the connector 300. The first connection portion 310 and the third connection portion 330 of the connector 300 are equivalent to a supporting protective member added to the pole lug 140, thereby reducing the risk of mechanical fatigue fracture of the pole lug 140 and further extending the service life of the battery.

[0066] Based on the battery disclosed in the present application, an embodiment of the present application further provides an electronic device, and the electronic device may include the battery described in any of the above embodiments.

[0067] The beneficial effects achieved by the electronic device provided in the embodiment of the present application are consistent with the beneficial effects achieved by the battery provided in the embodiment of the present application, and will not be described in detail here.

[0068] Optionally, the electronic device may be a mobile phone, a computer, a tablet or other electronic devices.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A battery, characterized in that: include: A battery cell, the battery cell comprising a battery cell body (100) and a pole ear (140), the battery cell body (100) being provided with a top seal (110), a first pit (120) and a second pit (130), the first pit (120) and the second pit (130) being respectively located on two opposite sides of the top seal (110), the pole ear (140) comprising a first portion (141) and a second portion (142) connected to the first portion (141), the first portion (141) being arranged in the top seal (110), and the second portion (142) being bent into the first pit (120); The protection plate assembly (200) is located in the second pit (130), and the protection plate assembly (200) is electrically connected to the second portion (142) of the pole lug (140) via a connector (300).

2. The battery according to claim 1, characterized in that The connecting member (300) includes a first connecting portion (310) and a second connecting portion (320) connected to the first connecting portion (310), wherein the first connecting portion (310) is bent into the first pit (120) and is electrically connected to the second portion (142), and the second connecting portion (320) is located in the second pit (130) and is electrically connected to the protective plate assembly (200).

3. The battery according to claim 2, characterized in that Along the thickness direction of the battery cell, the sum of the thickness of the second part (142) and the thickness of the first connecting part (310) is less than or equal to the depth of the first pit (120), and the sum of the thickness of the protection plate assembly (200) and the thickness of the second connecting part (320) is less than or equal to the depth of the second pit (130).

4. The battery according to claim 2, characterized in that The first connection portion (310) is fitted and connected to the second portion (142), and the second connection portion (320) is fitted and connected to a portion of the protection plate assembly (200).

5. The battery according to claim 2, characterized in that The pole lug (140) further comprises a third part (143), two ends of the third part (143) are respectively connected to the first part (141) and the second part (142), so that the pole lug (140) forms a U-shaped structure; The connecting member (300) further comprises a third connecting portion (330), the two ends of which are respectively connected to the first connecting portion (310) and the second connecting portion (320), so that the connecting member (300) forms a U-shaped structure, and the third portion (143) is partially fitted and connected to the third connecting portion (330).

6. The battery according to claim 2, characterized in that It also includes an insulating protective member (400), which surrounds the first connecting portion (310) and the outer periphery of the protective plate assembly (200), and is closely connected to the first connecting portion (310) and the outer periphery of the protective plate assembly (200), and the two ends of the insulating protective member (400) are respectively connected to the bottom of the first pit (120) and the bottom of the second pit (130).

7. The battery according to claim 2, characterized in that The second part (142) is connected to the top seal (110) via a first insulating adhesive (150), the second connecting portion (320) is connected to the top seal (110) via a second insulating adhesive (160), and an insulating pad (500) is provided between the protection plate assembly (200) and the bottom of the second pit (130).

8. The battery according to claim 1, characterized in that The battery comprises at least two pole tabs (140), and each of the pole tabs (140) is arranged at intervals along the length direction of the top seal (110).

9. The battery according to any one of claims 1 to 8, characterized in that: The electrode tab (140) includes a negative electrode tab and at least two positive electrode tabs, the negative electrode tab and each of the positive electrode tabs are spaced apart along the length direction of the top seal, and the negative electrode tab and each of the positive electrode tabs include the first part and the second part, and the second part of the negative electrode tab and the second part of each of the positive electrode tabs are electrically connected to the protection plate assembly (200) via the connector (300), respectively.

10. An electronic device, characterized in that: A battery comprising any one of claims 1 to 9.

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