Battery and electronic device

Abstract

The embodiment of the utility model provides a battery and electronic equipment. The battery comprises: a soft package battery cell comprising an electric connection assembly with a protection plate; an insulation packaging part, wherein the protection plate is embedded in the insulation packaging part; and the metal shell wraps the soft package battery cell and the insulation packaging part. The three core components of the soft package battery core, the insulation packaging part and the metal shell are combined together, so that all-directional and multi-layer protection on the battery is realized, the protection grade of the soft package battery core is improved, and the overall structural strength of the battery is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of batteries, and more particularly, to a battery and an electronic device. BACKGROUND

[0002] The outer layer of the battery cell used in the existing soft package battery is generally an aluminum plastic film package. The aluminum plastic film shell is relatively fragile and has insufficient resistance to sharp objects. It is easily accidentally punctured, causing the internal battery cell to be directly exposed to the external environment, significantly increasing the risk.

[0003] In addition, in the case of a severe impact or extrusion of the battery, the protection plate and the key components thereon are easily damaged or detached, thereby causing the battery to malfunction and reducing the reliability of the battery system.

[0004] In addition, the structural strength of the soft package battery is relatively weak and is easily deformed under external force, such as being artificially bent, which causes damage to the battery cell.

[0005] Therefore, there is a need to provide a new technical solution to solve the above technical problems. UTILITY MODEL CONTENT

[0006] The purpose of the present application is to provide a new technical solution for a battery and an electronic device.

[0007] In a first aspect, the present application provides a battery. The battery comprises:

[0008] a soft package battery cell comprising an electric connection assembly having a protection plate;

[0009] an insulating packaging portion, wherein the protection plate is embedded in the insulating packaging portion;

[0010] a metal shell, wherein the metal shell wraps the soft package battery cell and the insulating packaging portion.

[0011] Optionally, the electric connection assembly further comprises an electrode and an output portion, wherein the output portion is connected to the electrode through the protection plate.

[0012] The insulating packaging portion is formed with a through hole for the output portion to pass through.

[0013] Optionally, the insulating packaging portion is formed around the electric connection assembly by a low-pressure injection molding method.

[0014] Optionally, the soft package battery cell comprises a battery cell body, the electric connection assembly is arranged on a first end face of the battery cell body, a second end face of the battery cell body opposite to the first end face and a side end face adjacent to the first end face are both provided with insulating adhesive paper.

[0015] Optionally, a part of the insulating packaging portion is in close contact with the insulating adhesive tape.

[0016] Optionally, an inner surface of the metal shell is provided with a double-sided adhesive layer connecting the metal shell and the soft package battery cell.

[0017] Optionally, a buffer component is arranged between the soft package battery cell and the metal shell.

[0018] Optionally, the metal shell comprises a first shell and a second shell, and the first shell and the second shell enclose a containing cavity, and the soft package battery cell and the insulating packaging portion are located in the containing cavity.

[0019] Optionally, the first shell is provided with a first connecting portion, the second shell is provided with a second connecting portion, and the first connecting portion and the second connecting portion are welded to snap the first shell and the second shell to form the containing cavity.

[0020] In a second aspect, the embodiments of the present application further provide an electronic device. The electronic device comprises the battery as described in the first aspect.

[0021] According to the embodiments of the present application, by combining the soft package battery cell, the insulating packaging portion and the metal shell together, the battery is protected in all directions and in multiple levels, the protection level of the soft package battery cell is improved, and the overall structural strength of the battery is improved.

[0022] Other features and advantages of the present application will become apparent from the following detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 An exploded view of a battery provided by an embodiment of the present application is shown.

[0025] Figure 2 A structural view of a battery provided by an embodiment of the present application is shown.

[0026] Figure 3 A structure of a soft package battery cell provided by an embodiment of the present application is shown. Figure 1 .

[0027] Figure 4 A structure of a soft package battery cell provided by an embodiment of the present application is shown. Figure 2 .

[0028] LEGEND OF THE DRAWINGS:

[0029] 1. Soft-pack battery cell; 10. Electrical connection assembly; 101. Protection board; 102. Electrode; 103. Output section; 11. Battery cell body; 111. First end face; 112. Second end face; 113. First side end face; 114. Second side end face;

[0030] 12. Double-sided adhesive layer; 13. Cushioning components; 14. Insulating tape;

[0031] 2. Insulating encapsulation part; 20. Through hole;

[0032] 3. Metal casing; 31. First casing; 32. Second casing; 311. First connecting part; 321. Second connecting part. Detailed Implementation

[0033] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0035] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0036] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] This application provides a battery, specifically a pouch battery. This embodiment combines a metal casing 3 and an insulating encapsulation part 2 to protect the pouch cell 1. This not only effectively avoids the potential risk of damage to the aluminum-plastic film in traditional pouch batteries, significantly enhancing the battery's resistance to external impacts and environmental factors, but also achieves a significant improvement in protection level by optimizing the encapsulation structure of the protection board 101. Furthermore, this design cleverly enhances the overall structural strength of the battery, laying a solid foundation for stable operation and long-term durability.

[0039] Reference Figures 1-4The battery comprises: a soft package battery cell 1, an insulating packaging part 2, and a metal shell 3. The soft package battery cell 1 comprises an electric connection assembly 10 with a protection plate 101. The protection plate 101 in the electric connection assembly 10 is embedded in the insulating packaging part 2. The metal shell 3 wraps the soft package battery cell 1 and the insulating packaging part 2.

[0040] Specifically, the battery mainly comprises a soft package battery cell 1, an insulating packaging part 2, and a metal shell 3. The insulating packaging part 2 and the metal shell 3 pack the soft package battery cell 1, that is, the battery can be a soft package battery cell 1 pack lithium battery.

[0041] The soft package battery cell 1 is the core energy storage unit of the battery. The soft package battery cell 1 comprises an electric connection assembly 10, which is specially equipped with a protection plate 101. The protection plate 101 is responsible for the safety monitoring and protection of the circuit, and also ensures the stable operation of the battery under various working conditions through intelligent management. Exemplarily, the protection plate 101 is a PCM plate (PCM is a kind of circuit board on which electronic components are attached to achieve certain electrical functions after combination), which mainly undertakes the functions of protecting the safety of the battery cell, preventing overcharging, overdischarging, short circuit, and other abnormal conditions.

[0042] In this embodiment, the battery further particularly comprises an insulating packaging part 2. The positional relationship between the insulating packaging part 2 and the protection plate 101 is that the protection plate 101 is embedded in the insulating packaging part 2. Through the embedded design, the protection plate 101 is closely combined with the insulating packaging part 2, reducing unnecessary space occupation, and making the internal structure of the battery more compact and reasonable. It can also be understood that the insulating packaging part 2 has the function of wrapping the protection plate 101 and filling the space corresponding to the protection plate 101.

[0043] Specifically, the protection plate 101 is embedded in the insulating packaging part 2, which has the following technical effects:

[0044] 1) The insulating packaging part 2 more comprehensively protects the protection plate 101. Exemplarily, the insulating packaging part 2 provides an additional protective barrier for the protection plate 101, so that it is protected from external physical impact and chemical corrosion, thereby prolonging the service life of the protection plate 101 and improving the overall safety of the battery.

[0045] 2) The soft package battery cell 1 has better drop buffering. Exemplarily, when the soft package battery cell 1 suffers from dropping or other impacts, the insulating packaging part 2 can play a certain buffering role to reduce the damage of the impact to the internal structure of the battery. After the protection plate 101 is embedded, it can further disperse and absorb the impact energy due to the close combination with the insulating packaging part 2, thereby reducing the risk of damage to the battery cell.

[0046] 3) Better insulation and sealing effect of the battery, for example, the insulation packaging part 2 is usually made of materials with high insulation performance, such as plastic, rubber or other composite materials. These materials have excellent electrical insulation performance and can effectively isolate the current and electric field, preventing the internal components of the battery from electrical contact with the external environment. Embedding the protection plate 101 in the insulation packaging part 2 means that the protection plate 101 and the insulation packaging part 2 form a tight combination. This combination not only reduces the gap and vulnerability between the two, but also enhances the overall sealing. During the operation of the battery, even if there is a small electrical leakage or external electrical interference, it is difficult to penetrate this tightly combined insulation barrier.

[0047] 4) Prevents sharp objects from scratching the protection plate 101, for example, the insulation packaging part 2 is usually made of materials with high insulation performance and a certain hardness and wear resistance. When a sharp object tries to contact or penetrate the battery, the insulation packaging part 2 can act as the first line of defense, blocking or slowing the intrusion of sharp objects, thereby protecting the internal electrical components, including the protection plate 101.

[0048] In this embodiment, the battery also particularly includes a metal shell 3, which is usually made of a solid and durable metal material. For example, the metal shell 3 can be a steel shell.

[0049] The metal shell 3 tightly wraps the soft package battery cell 1 and the insulation packaging part 2, forming an indestructible protective armor. This design not only significantly enhances the structural strength of the battery, resisting external impact and compression.

[0050] Therefore, in this embodiment, by skillfully combining the three core components of the soft package battery cell 1, the insulation packaging part 2 and the metal shell 3, a comprehensive and multi-level protection of the battery is achieved, improving the protection level of the soft package battery cell 1 and the overall structural strength of the battery.

[0051] In a specific embodiment, referring to Figures 1-4 , the electrical connection assembly 10 further includes an electrode 102 and an output part 103, the output part 103 being connected to the electrode 102 through the protection plate 101; the insulation packaging part 2 is formed with a through hole 20, and the through hole 20 is for the output part 103 to pass through.

[0052] In this embodiment, the electrical connection assembly 10 specifically includes three parts: the electrode 102, the output part 103 and the protection plate 101, wherein the electrode 102 part directly corresponds to the positive and negative electrodes of the soft package battery cell 1. The positive and negative lead-out ends of the soft package battery cell 1 are docked with the protection plate 101. The output part 103 includes two parts: a wire and an output terminal, the wire being correspondingly connected to the positive and negative electrodes of the protection plate 101 to ensure output / input. The output terminal is used to connect other electronic devices.

[0053] In the case where the electric connection assembly 10 comprises the output part 103, the output part 103 is ensured to be able to lead out the current of the soft-pack battery cell 1, and the insulating packaging part 2 is formed with a through hole 20 for the output part 103 to pass through.

[0054] Exemplarily, the through hole 20 is not isolated, but is integrated with the insulating packaging part 2 itself during the manufacturing process of the insulating packaging part 2 by injection molding or the like, and together builds a safe and efficient current transmission channel.

[0055] In one embodiment, referring to Figure 4 , the insulating packaging part 2 is formed around the electric connection assembly 10 by low-pressure injection molding.

[0056] In this embodiment, the low-pressure injection molding process is used to build the insulating packaging part 2 around the electric connection assembly 10. In a specific embodiment, referring to Figure 3 , in the case where the electric connection assembly 10 comprises the protection plate 101, the electrode 102 and the output part 103, after the electrode 102, the protection plate 101 and the output part 103 are connected together in the correct manner, the protection plate 101 is used as the main insert, and the insulating packaging part 2 is formed around the electrode 102, the protection plate 101 and the output part 103 by low-pressure injection molding, so as to embed at least part of the protection plate 101, the electrode 102 and the output part 103 in the insulating packaging part 2. Referring to Figure 4 , the insulating packaging part 2 is formed around the first end surface 111 of the battery cell body 11 by low-pressure injection molding.

[0057] This method not only ensures that the insulating packaging part 2 can closely fit the protection plate 101 to form a strong and stable protective barrier. In addition, the insulating packaging part 2 is formed by low-pressure injection molding (usually in the range of 0.15-4 MPa), which avoids stress damage to the electric connection assembly 10.

[0058] In one embodiment, referring to Figure 1 , Figure 3 and Figure 4 , the soft-pack battery cell 1 comprises a battery cell body 11, the electric connection assembly 10 is arranged on the first end surface 111 of the battery cell body 11, and the second end surface 112 opposite to the first end surface 111 and the side end surface adjacent to the first end surface 111 of the battery cell body 11 are both provided with insulating adhesive paper 14.

[0059] In this embodiment, the soft-pack battery cell 1 mainly comprises two parts, the battery cell body 11 and the electric connection assembly 10. The battery cell body 11 is the main part of the soft-pack battery cell 1, and contains the core electrochemical materials of the battery, such as the positive electrode, the negative electrode, the separator and the electrolyte, etc.

[0060] The electrical connection assembly 10 is arranged on the first end face 111 of the battery cell body 11. The main function of this assembly is to provide electrical connection between the battery cell and external devices, so that the battery cell can be connected to the circuit system in a predetermined manner for charging and discharging operations. The electrical connection assembly 10 is arranged on the first end face 111 of the battery cell body 11, and the insulating packaging part 2 is mainly used for protecting the protection plate 101, so the insulating packaging part 2 is also formed on the first end face 111 of the battery cell body 11.

[0061] In this embodiment, the second end face 112 of the battery cell body 11 opposite to the first end face 111 is provided with insulating adhesive paper 14, and the side end face adjacent to the first end face 111 is also provided with insulating adhesive paper 14. For example, the first side end face 113 and the second side end face 114 are both provided with insulating adhesive paper 14. This measure further enhances the insulation protection of the battery cell, ensuring that short circuit can be effectively prevented in multiple directions. Especially in the application scenario of battery cell stacking or close arrangement, the insulation protection of the side end face is particularly important.

[0062] In one embodiment, referring to Figure 4 , part of the insulating packaging part 2 is in close contact with the insulating adhesive paper 14.

[0063] In this embodiment, the electrode 102, the protection plate 101 and the output part 103 can be connected together in the correct way first, and the insulating adhesive paper 14 can be arranged on the second end face 112 and the side end face of the battery cell body 11. Then, taking the protection plate 101 as the main insert, the insulating packaging part 2 can be formed by low-pressure injection molding on the outer periphery of the electrode 102, the protection plate 101 and the output part 103, wherein part of the insulating packaging part 2 is in close contact with the insulating adhesive paper 14.

[0064] Specifically, the insulating packaging part 2 and the insulating adhesive paper 14 are both materials for improving the insulation performance of the battery cell. When they are in close contact, a more continuous and complete insulation barrier can be formed around the battery cell. This barrier can more effectively isolate external electrical interference and potential short circuit risks, improving the overall safety of the battery cell. In addition, the close contact design also helps to improve the sealing of the battery cell, and the close fit of the insulating packaging part 2 and the insulating adhesive paper 14 can reduce the influence of external factors on the inside of the battery cell, protecting the electrochemical materials inside the battery cell from damage.

[0065] In one embodiment, referring to Figure 1 , the inner surface of the metal shell 3 is provided with a double-sided adhesive layer 12, and the double-sided adhesive layer 12 connects the metal shell 3 and the soft-pack battery cell 1.

[0066] In this embodiment, the metal shell 3 and the soft package battery cell 1 are tightly connected together by the double-sided adhesive layer 12, ensuring that the battery cell is stable inside the shell. The battery cell will not shift or fall off during long-term use, ensuring the stability and reliability of the battery pack. This connection method is simple and effective, and can meet the use requirements of the battery pack under various working conditions.

[0067] Exemplarily, the double-sided adhesive layer 12 is arranged on at least one inner surface of the metal shell 3, and the metal shell 3 and the soft package battery cell 1 are connected together through the double-sided adhesive layer 12.

[0068] In one embodiment, referring to Figure 1 , a buffer component 13 is arranged between the soft package battery cell 1 and the metal shell 3.

[0069] In this embodiment, a buffer component 13 is arranged between the soft package battery cell 1 and the metal shell 3, which can play a role in shock resistance and buffering in case of battery falling or the like. In addition, the metal shell 3 and the soft package battery cell 1 are connected together through the double-sided adhesive layer 12, and in case of the double-sided adhesive layer 12 falling off, the buffer component 13 can play a role in fixing the relative positions of the metal shell 3 and the double-sided adhesive layer 12, preventing the soft package battery cell 1 from shaking inside the metal shell 3. Exemplarily, the buffer component is foam.

[0070] In one embodiment, referring to Figure 1 and Figure 2 , the metal shell 3 includes a first shell 31 and a second shell 32, and the first shell 31 and the second shell 32 enclose a containing cavity, and the soft package battery cell 1 and the insulating packaging part 2 are located in the containing cavity.

[0071] In this embodiment, the metal shell 3 includes a first shell 31 and a second shell 32, and the first shell 31 and the second shell 32 can enclose a containing cavity by welding or the like, and the soft package battery cell 1 and the insulating packaging part 2 are located in the containing cavity, and the metal shell 3 improves the structural strength and protection strength of the battery.

[0072] In one embodiment, referring to Figure 1 and Figure 2 , the first shell 31 is provided with a first connecting part 311, the second shell 32 is provided with a second connecting part 321, and the first connecting part 311 and the second connecting part 321 are welded to make the first shell 31 and the second shell 32 snap together to form the containing cavity.

[0073] In this embodiment, the first shell 31 comprises a first body part and a first connecting part 311 connected with the first body part, the second shell 32 comprises a second body part and a second connecting part 321 connected with the second body part, the first body part and the second body part are matched together to form a containing cavity containing the soft-pack battery cell 1 and the insulating packaging part 2. When the first body part and the second body part are matched together, the first connecting part 311 and the second connecting part 321 are also matched together, the first shell 31 and the second shell 32 are welded together to form an integrated structure by welding the first connecting part 311 and the second connecting part 321, so as to play a protective role on the whole battery.

[0074] Exemplarily, the first connecting part 311 extends along the length direction of the first shell 31, and correspondingly, the second connecting part 321 extends along the length direction of the second shell 32, so as to facilitate the welding of the first connecting part 311 and the second connecting part 321.

[0075] In a second aspect, the embodiments of the present application also provide an electronic device. The electronic device comprises the battery as described above. Exemplarily, the electronic device includes but is not limited to a smart phone, a tablet computer, a smart watch, a headset, etc.

[0076] In the above embodiments, the focus is on the differences between the various embodiments, and the different optimization features between the various embodiments can be combined to form a better embodiment as long as they are not contradictory. In view of the brevity of the text, the details will not be repeated here.

[0077] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery, characterized by, include: The soft-pack battery cell (1) includes an electrical connection assembly (10) with a protection board (101); Insulating encapsulation part (2), the protective plate (101) is embedded in the insulating encapsulation part (2); The metal casing (3) encloses the soft-pack battery cell (1) and the insulating encapsulation part (2).

2. The battery of claim 1, wherein, The electrical connection assembly (10) further includes an electrode (102) and an output section (103), wherein the output section (103) is connected to the electrode (102) through the protection plate (101); The insulating encapsulation part (2) has a through hole (20) through which the output part (103) passes.

3. The battery according to claim 1 or 2, characterized in that, The insulating encapsulation portion (2) is formed around the electrical connection assembly (10) by low-pressure injection molding.

4. The battery of claim 1, wherein, The soft-pack battery cell (1) includes a battery cell body (11), and the electrical connection assembly (10) is disposed on the first end face (111) of the battery cell body (11). The second end face (112) of the battery cell body (11) which is opposite to the first end face (111) and the side end face which is adjacent to the first end face (111) are both provided with insulating tape (14).

5. The battery of claim 4, wherein, Part of the insulating encapsulation portion (2) is in close contact with the insulating adhesive tape (14).

6. The battery of claim 1, wherein, The inner surface of the metal casing (3) is provided with a double-sided adhesive layer (12), which connects the metal casing (3) and the soft-pack battery cell (1).

7. The battery according to claim 1 or 6, characterized in that, A buffer component (13) is provided between the soft-pack battery cell (1) and the metal casing (3).

8. The battery of claim 1, wherein, The metal casing (3) includes a first casing (31) and a second casing (32), which together form a receiving cavity, and the soft-pack battery cell (1) and the insulating encapsulation part (2) are located inside the receiving cavity.

9. The battery of claim 8, wherein, The first housing (31) is provided with a first connecting part (311), and the second housing (32) is provided with a second connecting part (321). The first connecting part (311) and the second connecting part (321) are welded together so that the first housing (31) and the second housing (32) are fastened together to form the receiving cavity.

10. An electronic device, comprising: The electronic device includes a battery as described in any one of claims 1-9.

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