A battery and electronic device

Abstract

This application discloses a battery and an electronic device, belonging to the field of battery technology. The battery includes: a pouch casing, a core, and multiple insulating protective parts. The pouch casing has an internal receiving space with multiple corner areas. The core is located within the receiving space. The core has multiple corners, each corresponding to one of the corner areas, with each corner located at the position of its corresponding corner area. At least two insulating protective parts are distributed between each corner and its corresponding corner area, and both insulating protective parts are fixedly connected to the pouch casing, with the at least two insulating protective parts distributed along the thickness direction of the battery. The insulating protective parts provide additional protection at the corner areas, reducing the risk of corner damage. Even if a corner area is damaged, the insulating protective parts can still provide insulation protection, preventing short circuits at the corners. The insulating protective parts are directly fixedly mounted on the pouch casing, reducing the impact on the corners of the core.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery and electronic device. Background Technology

[0002] As battery voltage and energy density continue to increase, battery safety is receiving more attention. For example, the selection of positive and negative electrode materials is trending towards higher capacity, with the application of high-voltage positive electrodes and silicon negative electrodes; various substrates are becoming increasingly thinner, with aluminum foil, copper foil, separators, and aluminum-plastic films becoming thinner and thinner. The use of high-energy materials and thin substrates poses challenges to battery safety.

[0003] Currently, the safety issues at the battery corners are particularly prominent. On the one hand, when a battery is dropped, the corners are prone to localized short circuits after impact, leading to cell overheating or even fire and failure. On the other hand, the corners are easily damaged during use, allowing air and moisture to enter the battery through the damaged areas, causing a sudden increase in local thickness, and even short circuits and fires. Utility Model Content

[0004] This application provides a battery and an electronic device. It can solve the safety problems caused by corner damage in the prior art. The technical solution is as follows:

[0005] On the one hand, a battery is provided, including: a soft-pack casing, a core, and multiple insulating protective parts;

[0006] The interior of the soft-pack housing has a receiving space, and the receiving space has multiple corner areas;

[0007] The core is located within the receiving space; the core has multiple corners, each of which corresponds to a multiple corner area, and each corner is located at the position of the corresponding corner area.

[0008] Each corner is provided with at least two insulating protective parts between it and the corresponding corner area. At least two insulating protective parts are fixedly connected to the soft-pack shell and are distributed in the thickness direction of the battery.

[0009] In some possible implementations, for at least two of the insulating protective portions distributed between the corner and the corresponding corner area, two adjacent insulating protective portions in the thickness direction of the battery abut each other.

[0010] In some possible implementations, the soft-pack housing includes: a first soft film and a second soft film disposed opposite to each other in the thickness direction of the battery; the first soft film has a first groove on the side facing the second soft film, and the second soft film has a second groove on the side facing the first soft film; the first groove and the second groove are in communication, and the connected first groove and the second groove form the receiving space;

[0011] Specifically, for at least two insulating protective parts distributed between the corner and the corresponding corner area, one of the at least two insulating protective parts is fixedly connected to the first soft membrane at the corner area of ​​the first groove, and another of the at least two insulating protective parts is fixedly connected to the second soft membrane at the corner area of ​​the second groove.

[0012] In some possible implementations, the width of the insulating protective portion distributed at the corner location of the first tank in the thickness direction of the battery is greater than or equal to the depth of the first tank; the width of the insulating protective portion distributed at the corner location of the second tank in the thickness direction of the battery is greater than or equal to the depth of the second tank.

[0013] In some possible implementations, the insulating protective portion distributed at the corner area of ​​the first tank is bonded to the first soft film; the insulating protective portion distributed at the corner area of ​​the second tank is bonded to the second soft film.

[0014] In some possible implementations, the four edges of the first flexible membrane are sealed to the four edges of the second flexible membrane;

[0015] The first soft membrane and the second soft membrane are an integral structure.

[0016] In some possible implementations, the insulating protective portion abuts against the corner of the core;

[0017] Alternatively, the insulating protective part is bonded to the corner of the core.

[0018] In some possible implementations, the side of the insulating protective portion facing the corner of the core is an arc-shaped surface.

[0019] In some possible implementations, the insulating protection part is a solid component made of a cushioning insulating material.

[0020] On the other hand, an electronic device is provided, comprising: a device body, and the aforementioned battery, wherein the battery is installed within the device body.

[0021] The beneficial effects of the technical solutions provided in this application include at least the following:

[0022] The insulating protection section provides additional protection in the corner area, not only reducing the risk of corner damage but, more importantly, ensuring that even if the corner area is damaged, the insulating protection section still provides insulation, preventing short circuits and safety risks at the corner. Specifically, on one hand, the insulating protection section separates the corner of the core from the corner of the pouch casing, preventing the corner of the core from contacting the damaged metal layer of the pouch casing and causing a short circuit. On the other hand, the insulating protection section reduces the degree of deformation at the corner of the core under stress, preventing direct short circuits between the electrodes of the core. Furthermore, the insulating protection section is fixedly connected to the corner of the pouch casing, ensuring the airtightness of the containment space even if the pouch casing is damaged, preventing the containment space from being exposed to the outside and allowing air or moisture to enter. Additionally, the insulating protection section is located in the corner area and does not occupy the main part of the containment space, thus not interfering with the original core structure and not affecting the battery's energy density. Moreover, the insulating protection section is directly fixedly mounted on the pouch casing, reducing the impact on the corner of the core, which is beneficial for improving battery performance and reducing battery safety risks. Each insulating protection section protects its corresponding area on the battery, avoiding the problem of large-area tearing caused by stress transmission in a monolithic insulating protection section, thereby reducing the safety risks of the battery. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the battery structure provided in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of an insulating protective part connected to an unencapsulated soft-pack housing according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of another structure provided in this application, in which an insulating protective part is connected to an unencapsulated soft housing.

[0027] Figure label:

[0028] 100. Soft housing; 101. First soft membrane; 1011. First tank; 102. Second soft membrane; 1012. Second tank; 103. Third soft membrane; 1031. Third tank; 104. Fourth soft membrane; 105. Injection section; C. Corner area;

[0029] 200. Core; 201. Corner; 202. Electrode connector;

[0030] 300. Insulation Protection Section. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0032] This application provides a battery. This battery can be used as a product or component in any electrical device such as a mobile phone, computer, watch, robot vacuum cleaner, electric vehicle, or power tool. The battery can be a lithium-ion battery or a sodium-ion battery.

[0033] Figure 1 This is a schematic diagram of the battery structure provided in the embodiments of this application. Figure 2 This is a schematic diagram illustrating the structure of an insulating protective part 300 connected to an unencapsulated soft-pack housing 100, as provided in an embodiment of this application. Please refer to... Figure 1 and Figure 2 The battery includes: a soft-pack casing 100, a core 200, and multiple insulating protective parts 300.

[0034] The soft-pack casing 100 has an internal receiving space with multiple corner areas C. The soft-pack casing 100 serves as the battery outer shell, housing the core 200, providing a sealed environment for the core 200, and protecting it from physical damage. The soft-pack casing 100 has a large bending angle at the corner areas C, and the stress surface is small at these areas, making it prone to stress concentration. This makes it susceptible to breakage during drops or vibrations, potentially leading to battery safety risks or even fire.

[0035] The soft-pack housing 100 can be an aluminum-plastic film, which combines the characteristics of being lightweight and flexible. In one embodiment, the aluminum-plastic film comprises three layers of film material laminated together, namely a plastic layer (outer layer), an aluminum foil (middle layer), and a heat-sealing layer (inner layer).

[0036] The core 200 is located within the accommodating space; the core 200 has multiple corner portions 201, each corresponding to a multiple corner region C, with each corner portion 201 located at the corresponding corner region C. The core 200 is the core functional unit of the battery for energy storage and release, converting chemical energy into electrical energy and outputting it through the tabs. In some embodiments, the core 200 includes a stacked positive electrode, a separator, and a negative electrode. The core 200 can be manufactured using either a winding or a stacking process.

[0037] like Figure 1As shown, in some embodiments, the core 200 also has an electrode connector 202, which may include a negative electrode tab and a positive electrode tab. The negative electrode tab is electrically connected to the negative electrode plate, and the positive electrode tab is electrically connected to the positive electrode plate. Both the negative electrode tab and the positive electrode tab extend outside the soft-pack housing 100, serving as the negative and positive electrodes of the battery.

[0038] In this embodiment, at least two insulating protective parts 300 are distributed between each corner 201 and the corresponding corner area C. Each of the at least two insulating protective parts 300 is fixedly connected to the soft-pack casing 100 and is distributed along the thickness direction of the battery. That is, for each of the at least two insulating protective parts 300 distributed between the corner 201 and the corresponding corner area C, each of the at least two insulating protective parts 300 is fixedly connected to the soft-pack casing 100 and distributed along the thickness direction of the battery. Compared to setting the insulating protective parts 300 as a continuous whole, this embodiment uses at least two insulating protective parts 300. In this way, each insulating protective part 300 protects its corresponding area on the battery independently. When a concentrated external force impacts some of the at least two insulating protective parts 300, the remaining insulating protective parts 300 have minimal mutual influence with the impacted insulating protective parts 300 and can still independently protect the corresponding area of ​​the battery. This avoids the problem of large-area tearing caused by stress transmission in a whole-type insulating protective part, thereby reducing the safety risk of the battery.

[0039] During battery assembly, firstly, an unencapsulated soft-pack housing 100 and multiple insulating protective parts 300 are provided; then, at least two insulating protective parts 300 are fixedly connected to the soft-pack housing 100 at the corner area C of each unencapsulated soft-pack housing 100; then, the core 200 is inserted into the soft-pack housing 100, and the soft-pack housing 100 is encapsulated. Compared to the insulating protective parts being directly fixedly assembled to the core 200, in this embodiment, the insulating protective parts 300 are directly fixedly assembled to the soft-pack housing 100. Therefore, during the assembly process, the influence of the insulating protective parts 300 on the corners 201 of the core 200 is reduced, maintaining the structural stability of the corners 201 of the core 200, which is beneficial for improving battery performance and reducing battery safety risks.

[0040] In summary, the insulating protection section provides additional protection in the corner area, not only reducing the risk of corner damage but, more importantly, ensuring that even if the corner area is damaged, the insulating protection section still provides insulation, preventing short circuits and safety risks at the corner. Specifically, on one hand, the insulating protection section separates the corner of the core from the corner of the pouch casing, preventing the corner of the core from contacting the damaged metal layer of the pouch casing and causing a short circuit. On the other hand, the insulating protection section reduces the degree of deformation at the corner of the core under stress, preventing direct short circuits between the electrodes of the core. Furthermore, the insulating protection section is fixedly connected to the corner of the pouch casing, ensuring the airtightness of the containment space even if the pouch casing is damaged, preventing the containment space from being connected to the outside and allowing air or moisture to enter. In addition, the insulating protection section is located in the corner area and does not occupy the main part of the containment space, thus not interfering with the original core structure and not affecting the battery's energy density. Furthermore, the insulation protection units are directly and securely mounted on the soft-pack casing, reducing the impact on the corners of the core, which is beneficial for improving battery performance and reducing battery safety risks. Each insulation protection unit protects its corresponding area on the battery separately, avoiding the problem of large-area tearing caused by stress transmission in a monolithic insulation protection unit, thereby reducing battery safety risks.

[0041] In some possible implementations, for at least two insulating protection portions 300 distributed between corner 201 and the corresponding corner area C, two adjacent insulating protection portions 300 in the thickness direction of the battery abut each other.

[0042] In this way, there is no gap between two adjacent insulating protection parts 300, thereby preventing the corner 201 of the core 200 and the soft-pack shell 100 at the corner area C from contacting each other in the area between two adjacent insulating protection parts 300; and ensuring that the junction of two adjacent insulating protection parts 300 can play a sealing role, preventing moisture or air from entering the containment space from this point, and preventing the battery from experiencing a sudden increase in local thickness at this location, or even short circuit and fire failure.

[0043] For example, each corner 201 is provided with two insulating protective portions 300. In the battery thickness direction, one side of the insulating protective portion 300 abuts against the inner wall of the soft-pack housing 100, and the other side abuts against another insulating protective portion 300. In other embodiments, the number of insulating protective portions 300 provided in each corner 201 may also be 3, 4, or 5, etc.

[0044] like Figure 2As shown, in some possible embodiments, the soft-pack housing 100 may include a first soft film 101 and a second soft film 102 disposed opposite to each other in the thickness direction of the battery. The first soft film 101 has a first groove 1011 on the side facing the second soft film 102, and the second soft film 102 has a second groove 1012 on the side facing the first soft film 101. The first groove 1011 and the second groove 1012 communicate with each other, and the connected first groove 1011 and second groove 1012 form a receiving space. In this way, the first groove 1011 and the second groove 1012 jointly receive the core 200, which facilitates the central arrangement of the electrode connector 202 on the core 200 in the thickness direction of the battery, and the electrode connector 202 extends out of the soft-pack housing 100 from between the first soft film 101 and the second soft film 102, reducing the bending degree of the electrode connector 202.

[0045] Furthermore, the soft-pack casing 100 is generally formed by stamping. After stamping, the corner area C of the first groove 1011 and the second groove 1012 is thinned due to stretching. Compared with the soft-pack casing 100 with a single-pit structure, with the battery thickness remaining unchanged, the sum of the depths of the first groove 1011 and the second groove 1012 is approximately the depth of the single-pit battery groove. Thus, the depths of both the first groove 1011 and the second groove 1012 are significantly reduced. This helps to ensure the thickness of the corner area C of the first groove 1011 and the corner area C of the second groove 1012 after stamping, thereby improving the structural strength of the soft-pack casing 100 at the location of the corner area C.

[0046] Among them, for at least two insulating protective parts 300 distributed between corner 201 and the corresponding corner area C, one of the at least two insulating protective parts 300 is fixedly connected to the first soft membrane 101 at the corner area C position of the first tank 1011, and another of the at least two insulating protective parts 300 is fixedly connected to the second soft membrane 102 at the corner area C position of the second tank 1012. In other words, after the soft-pack shell 100 is formed, an insulating protection part 300 is fixedly connected in both the first groove 1011 and the second groove 1012. Regardless of whether the first soft film 101 or the second soft film 102 is damaged, the insulating protection part 300 can protect the corner area C of the first soft film 101 and the corner area C of the second soft film 102, preventing moisture or gas from entering the containment space from the first soft film 101 or the second soft film 102, and isolating the corner 201 of the core 200 from the soft-pack shell 100 to prevent the battery from short-circuiting.

[0047] In some embodiments, the depth of the first groove 1011 is the same as the depth of the second groove 1012, and the size of the first groove 1011 is the same as the size of the second groove 1012, thus forming a symmetrical accommodating space. External impact forces or pressures can be symmetrically distributed to the first soft film 101 and the second soft film 102, thereby reducing stress concentration in local areas and improving battery safety. At this time, a corner area C on the first groove 1011 and a corner area C on the opposite second groove 1012 together form a corner area C of the soft-pack casing 100. In the embodiments of this application, both the first groove 1011 and the second groove 1012 are rectangular, with four corner areas C on the first groove 1011 and four corner areas C on the second groove 1012, and eight insulating protection parts 300 are respectively installed at these eight corner areas C. Two insulating protection parts 300 opposite each other along the battery thickness direction form a group, protecting a corner 201 of the core 100.

[0048] In some possible embodiments, the width of the insulating protective portion 300 distributed at the corner area C of the first tank 1011 in the thickness direction is greater than or equal to the depth of the first tank 1011. The width of the insulating protective portion 300 distributed at the corner area C of the second tank 1012 in the thickness direction is greater than or equal to the depth of the second tank 1012.

[0049] In this way, the insulating protection part 300 on the first tank 1011 can completely cover the corner area C of the first tank 1011 in the thickness direction of the battery, and the insulating protection part 300 on the second tank 1012 can completely cover the corner area C of the second tank 1012 in the thickness direction of the battery. Moreover, the two insulating protection parts 300 protecting the same corner 201 abut or overlap in the thickness direction of the battery, thereby better ensuring the sealing of the containing space.

[0050] For example, the width of the insulating protective portion 300 distributed at the corner area C of the first tank 1011 in the thickness direction is equal to the depth of the first tank 1011, and the width of the insulating protective portion 300 distributed at the corner area C of the second tank 1012 in the thickness direction is equal to the depth of the second tank 1012. Thus, when the first soft film 101 and the second soft film 102 are aligned, the insulating protective portion 300 distributed at the corner area C of the first tank 1011 and the insulating protective portion 300 distributed at the corner area C of the second tank 1012 just abut against each other.

[0051] In some possible embodiments, the insulating protective portion 300 distributed at the corner area C of the first tank 1011 is bonded to the first soft film 101. The insulating protective portion 300 distributed at the corner area C of the second tank 1012 is bonded to the second soft film 102.

[0052] In this way, the insulating protective part 300 is bonded to the first flexible membrane 101 by adhesive bonding. Even if the first flexible membrane 101 is damaged at the corner area C, the adhesive bonding of the insulating protective part 300 can ensure the sealing of the first flexible membrane 101 at the damaged point, thereby ensuring the sealing of the containing space and preventing external moisture or air from entering the containing space through the damaged point of the first flexible membrane 101. Similarly, the insulating protective part 300 is bonded to the second flexible membrane 102 by adhesive bonding. Even if the second flexible membrane 102 is damaged at the corner area C, the adhesive bonding of the insulating protective part 300 can ensure the sealing of the second flexible membrane 102 at the damaged point, thereby ensuring the sealing of the containing space and preventing external moisture or air from entering the containing space through the damaged point of the second flexible membrane 102.

[0053] Figure 3 This is a schematic diagram of another structure provided in this application, where an insulating protective part 300 is connected to an unencapsulated soft-pack housing 100. (See attached diagram.) Figure 3 As shown, the soft-pack housing 100 may include a third soft film 103 and a fourth soft film 104 disposed opposite each other in the thickness direction of the battery. The third soft film 103 has a third groove 1031 on the side facing the fourth soft film 104, and the core 200 is accommodated within the third groove 1031. The fourth soft film 104 is sealed to the third soft film 103, forming an accommodating space. An insulating protective part 300 is fixedly connected to each corner area C of the third groove 1031 on the third soft film 103. In this way, the insulating protective part 300 can provide insulation protection for the single-pit battery, preventing moisture or air from entering the accommodating space due to damage to the corner 201 of the battery, thereby reducing the safety risk caused by damage to the battery corner 201. Two or more insulating protective parts 300 may be provided in one corner area C of the third groove 1031 along the thickness direction of the battery.

[0054] It should be noted that from the casing process to the battery trimming process, Figure 2 and Figure 3 Each soft-pack casing 100 has an electrolyte injection section 105. During the casing assembly process, after heat-sealing the remaining edges of the soft-pack casing 100, the edge of the electrolyte injection section 105 furthest from the core 200 remains open. During the electrolyte injection process, electrolyte is injected into the receiving space through the opening of the electrolyte injection section 105, and then the opening is heat-sealed to seal the receiving space. The core 200 is then allowed to fully absorb the electrolyte. Subsequently, during the edge trimming process, the side of the electrolyte injection section 105 closest to the core 200 is heat-sealed, and the electrolyte injection section 105 is trimmed off, thus forming the battery.

[0055] In one embodiment, the insulating protective portion 300 abuts against the corner 201 of the core 200. That is, the insulating protective portion 300 is only fixedly connected to the soft-pack housing 100, and has no connection to the core 200. Thus, even if the soft-pack housing 100 is damaged at the corner area C, the insulating protective film can still ensure the sealing of the containing space. Furthermore, during assembly, the insulating protective portion 300 is assembled onto the soft-pack housing 100, having minimal impact on the corner 201 of the core 200, which helps maintain the structural shape of the corner 201 of the core 200, improves battery performance, and reduces battery safety risks.

[0056] In another embodiment, the insulating protection part 300 is bonded to the corner 201 of the core 200. In this way, the insulating protection part 300 can fix the corner 201 of the core 200. When the corner of the battery is impacted, causing the corner 201 of the core 200 to be impacted, the insulating protection part 300 can make the structure of the corner 201 of the core 200 more stable and less prone to positive and negative short circuits.

[0057] In some possible implementations, the four edges of the first soft membrane 101 are sealed together with the four edges of the second soft membrane 102. This ensures the airtightness of the containment space, prevents the containment space from communicating with the outside world, and prevents external moisture and air from entering the containment space.

[0058] The first flexible membrane 101 and the second flexible membrane 102 are integral structures. Exemplarily, the side of the first flexible membrane 101 opposite to the electrode connector 202 and the side of the second flexible membrane 102 opposite to the electrode connector 202 are integrally connected. Exemplarily, the integral flexible housing 100 is formed by cutting a whole sheet of aluminum-plastic film.

[0059] During assembly, firstly, a first soft film 101 and a second soft film 102 are provided integrally connected. Then, an insulating protective part 300 is fixedly connected to the corner area C of the first groove 1011 and the second groove 1012 respectively. Next, the core 200 is placed into the first groove 1011 of the first soft film 101. Taking the integral connection as the fold line, the first soft film 101 and the second soft film 102 are folded in half, so that the second groove 1012 is opposite to the first groove 1011, and the core 200 is simultaneously accommodated in the second groove 1012. Finally, the other edges of the first soft film 101 and the second soft film 102 are heat-pressed to seal the accommodating space.

[0060] like Figure 2As shown, in some possible embodiments, the side of the insulating protective portion 300 facing the corner 201 of the core 200 is an arc-shaped surface. In this way, the part of the insulating protective portion 300 that contacts the corner 201 of the core 200 is smoother, thereby reducing the structural impact on the corner 201 of the core 200.

[0061] In some possible implementations, the insulating protection portion 300 is a solid component made of a cushioning insulating material. In this way, the insulating protection portion 300 can buffer external forces, thereby reducing the risk of breakage of the flexible housing 100 at the corner area C, and simultaneously reducing the risk of short circuits caused by deformation of the corner 201 of the core 200. The shape of the insulating protection portion 300 of the solid component can be adaptively adjusted according to the shape and size of the gap between the flexible housing 100 at the corner area C and the corner 201 of the core 200; for example, it can be a layered structure or a block structure.

[0062] In one embodiment, the insulating protective part 300 can be a solid adhesive film, such as acrylic adhesive film, rubber adhesive film, polyimide adhesive film, polyolefin adhesive film, or hot melt adhesive film. Thus, the insulating protective part 300 can be fixed to the flexible housing 100 by bonding. In another embodiment, liquid adhesive can also be applied to the corners of the flexible housing 100, and after the liquid adhesive solidifies, a solid insulating protective part 300 is formed.

[0063] In this embodiment, the battery is rectangular, and its soft-pack casing 100 has four corner areas C. At each corner of the battery, the insulating protection part 300 covers both sides of the corner 201 of the core 200 in the battery thickness direction, also covers one side of the corner 201 of the core 200 in the battery width direction, and covers one side of the angle of the core 200 in the battery length direction. This provides all-around protection for the corner 201 of the core 200, improving battery safety.

[0064] In summary, the insulating protection section provides additional protection in the corner area, not only reducing the risk of corner damage but, more importantly, ensuring that even if the corner area is damaged, the insulating protection section still provides insulation, preventing short circuits and safety risks at the corner. Specifically, on one hand, the insulating protection section separates the corner of the core from the corner of the pouch casing, preventing the corner of the core from contacting the damaged metal layer of the pouch casing and causing a short circuit. On the other hand, the insulating protection section reduces the degree of deformation at the corner of the core under stress, preventing direct short circuits between the electrodes of the core. Furthermore, the insulating protection section is fixedly connected to the corner of the pouch casing, ensuring the airtightness of the containment space even if the pouch casing is damaged, preventing the containment space from being connected to the outside and allowing air or moisture to enter. In addition, the insulating protection section is located in the corner area and does not occupy the main part of the containment space, thus not interfering with the original core structure and not affecting the battery's energy density. Furthermore, the insulation protection units are directly and securely mounted on the soft-pack casing, reducing the impact on the corners of the core, which is beneficial for improving battery performance and reducing battery safety risks. Each insulation protection unit protects its corresponding area on the battery separately, avoiding the problem of large-area tearing caused by stress transmission in a monolithic insulation protection unit, thereby reducing battery safety risks.

[0065] This application also provides an electronic device. The electronic device includes a device body and the aforementioned battery, with the battery installed within the device body. The electronic device can be a portable device such as a mobile phone, computer, or watch. By using an insulating protective portion on the battery, the risk of a short circuit caused by a drop can be reduced, thus improving the safety of the electronic device.

[0066] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0067] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery, characterized by, include: The soft-shell housing (100), the core (200), and multiple insulating protective parts (300); The interior of the soft-shell housing (100) has a receiving space, and the receiving space has multiple corner areas (C); The core (200) is located within the accommodating space; the core (200) has a plurality of corner portions (201), each of the plurality of corner portions (201) corresponds one-to-one with the plurality of corner areas (C), and each of the corner portions (201) is located at the position of the corresponding corner area (C); Each corner (201) is provided with at least two insulating protective parts (300) between it and the corresponding corner area (C). The at least two insulating protective parts (300) are fixedly connected to the soft-pack housing (100), and the at least two insulating protective parts (300) are distributed in the thickness direction of the battery.

2. The battery of claim 1, wherein, For at least two of the insulating protective portions (300) distributed between the corner (201) and the corresponding corner area (C), two adjacent insulating protective portions (300) in the thickness direction of the battery abut each other.

3. The battery of claim 1, wherein, The soft-pack housing (100) includes: a first soft film (101) and a second soft film (102) disposed opposite to each other in the thickness direction of the battery; the first soft film (101) has a first groove (1011) on the side facing the second soft film (102), and the second soft film (102) has a second groove (1012) on the side facing the first soft film (101); the first groove (1011) and the second groove (1012) are in communication, and the connected first groove (1011) and the second groove (1012) form the receiving space; Among them, for at least two insulating protective parts (300) distributed between the corner (201) and the corresponding corner area (C), one of the at least two insulating protective parts (300) is fixedly connected to the first soft membrane (101) at the corner area (C) of the first groove (1011), and another of the at least two insulating protective parts (300) is fixedly connected to the second soft membrane (102) at the corner area (C) of the second groove (1012).

4. The battery of claim 3, wherein, The insulating protective portion (300) distributed at the corner area (C) of the first groove (1011) has a width in the thickness direction of the battery that is greater than or equal to the depth of the first groove (1011); the insulating protective portion (300) distributed at the corner area (C) of the second groove (1012) has a width in the thickness direction of the battery that is greater than or equal to the depth of the second groove (1012).

5. The battery of claim 3, wherein, The insulating protective part (300) distributed at the corner area (C) of the first groove (1011) is bonded to the first soft film (101); the insulating protective part (300) distributed at the corner area (C) of the second groove (1012) is bonded to the second soft film (102).

6. The battery of any one of claims 3 to 5, wherein the cathode comprises a cathode active material and a cathode binder. The four edges of the first soft membrane (101) are sealed to the four edges of the second soft membrane (102); The first soft membrane (101) and the second soft membrane (102) are integral structures.

7. The battery of any one of claims 1-5, wherein the cathode comprises a lithium metal oxide. The insulating protective part (300) abuts against the corner (201) of the core (200); Alternatively, the insulating protective part (300) is bonded to the corner (201) of the core (200).

8. The battery of any one of claims 1-5, wherein, The side of the insulating protective part (300) facing the corner (201) of the core (200) is an arc-shaped surface.

9. The battery of any one of claims 1-5, wherein the battery is a lithium ion battery. The insulating protection part (300) is a solid component made of a cushioning insulating material.

10. An electronic device, comprising: include: The device body, and the battery as described in any one of claims 1-9, wherein the battery is mounted in the device body.

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