Battery and electronic equipment

Abstract

The utility model relates to a battery and electronic equipment, the battery comprises a packaging part, a plurality of tabs and a battery protection plate, the battery protection plate is electrically connected with a negative tab, and the negative tab in the plurality of tabs is arranged in a first preset area of the side wall surface of the packaging part; at least part of the first preset area of the side wall surface is recessed in the direction away from the battery protection plate to form an avoiding part, and at least part of the structure of the battery protection plate is right opposite to the avoiding part. In the battery protection plate, the recess is formed in the side wall surface of the battery packaging part to form the avoiding part, and at least part of the structure of the battery protection plate can directly face the avoiding part and extend into the avoiding part in an assembly state, so that the battery protection plate is closer to the packaging part to make full use of a gap space between the battery protection plate and the packaging part; the battery can have a smaller volume under the condition that the capacity of the battery is not changed, and the energy density of the battery is improved.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more particularly to a battery and an electronic device. Background Technology

[0002] Portable electronic products (such as smartphones, tablets, etc.) are powered by built-in batteries, which are usually equipped with battery protection boards.

[0003] With the development of electronic technology, the requirements for batteries are becoming more and more stringent, and the structure of battery protection boards is becoming more and more complex. The complex structure leads to a low space between the battery protection board and the battery casing, which reduces the battery energy density. Utility Model Content

[0004] To overcome the problems existing in related technologies, this disclosure provides a battery and an electronic device.

[0005] According to an embodiment of this disclosure, a battery is provided, comprising:

[0006] The encapsulation part has a side wall surface, and the side wall surface has a first preset area;

[0007] Multiple electrodes, including a negative electrode, wherein the negative electrode is disposed in the first preset area;

[0008] The battery protection board is electrically connected to the negative electrode tab;

[0009] Wherein, at least a portion of the first preset area of ​​the sidewall is recessed in a direction away from the battery protection plate to form a clearance portion, and at least a portion of the structure of the battery protection plate is directly opposite the clearance portion.

[0010] In some embodiments, the sidewall surface further includes a second preset region, and the plurality of tabs further include a positive tab disposed in the second preset region.

[0011] The projection of the battery protection plate on the side wall is offset from the second preset area.

[0012] In some embodiments, the battery further includes:

[0013] A first electrical connector is disposed in the first preset area, and the first electrical connector is used to connect the battery protection board and the negative electrode tab.

[0014] The second electrical connector has a first end disposed in the first preset area and electrically connected to the battery protection board, and a second end disposed in the second preset area and electrically connected to the positive electrode tab.

[0015] In some embodiments, the second electrical connector includes a first structure, a bent structure, and a second structure connected in a Z-shape in sequence. The first structure is disposed in the first preset region and electrically connected to the battery protection board, and the second structure is located in the second preset region and electrically connected to the positive electrode tab.

[0016] In some embodiments, the side of the second structure opposite to the positive electrode tab is flush with the side of the battery protection plate opposite to the negative electrode tab.

[0017] In some embodiments, along the arrangement direction of the battery protection board and the encapsulation portion, the length of the positive electrode tab is greater than the length of the negative electrode tab.

[0018] In some embodiments, the first preset region includes a first sub-region and a second sub-region, and the negative electrode tab is disposed in the first sub-region;

[0019] At least a portion of the second sub-region is recessed in a direction away from the battery protection plate to form the avoidance portion.

[0020] In some embodiments, the battery protection board includes:

[0021] The substrate is electrically connected to the plurality of electrodes through multiple electrical connection structures;

[0022] Electronic components are disposed on the side of the substrate facing the packaging portion, and at least a portion of the electronic components are located within the clearance portion.

[0023] In some embodiments, the plurality of tabs further includes a positive tab, and the length of the positive tab is the same as the length of the negative tab in the arrangement direction of the package portion and the battery protection plate.

[0024] According to a second aspect of this disclosure, an electronic device is provided, including a battery as described in the first aspect.

[0025] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: by providing a recess to form a clearance portion on the side wall of the battery package portion, in the assembled state, at least a part of the structure of the battery protection board can face the clearance portion and extend into the clearance portion, so that the battery protection board is closer to the package portion to make full use of the gap space between the battery protection board and the package portion, and the battery can have a smaller volume and improve the energy density of the battery without changing the battery capacity.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0028] Figure 1 This is a schematic diagram of a battery according to an exemplary embodiment.

[0029] Figure 2 This is a schematic diagram of the side wall surface of an encapsulation portion according to an exemplary embodiment.

[0030] Figure 3 yes Figure 1 Cross-sectional view along the AA direction.

[0031] Figure 4 This is a schematic diagram of a battery according to an exemplary embodiment.

[0032] Figure 5 yes Figure 4 Cross-sectional view in the BB direction.

[0033] Figure 6 This is a schematic diagram of a battery according to an exemplary embodiment.

[0034] Figure 7 yes Figure 6 Cross-sectional view in the CC direction.

[0035] Figure 8 This is a schematic diagram of a battery according to an exemplary embodiment.

[0036] Figure 9 yes Figure 8 Cross-sectional view in the DD direction. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0038] In related technologies, the opposing surfaces of the battery packaging section and the battery protection board are both planar. When there are some large electronic components on the battery protection board, the distance between the battery protection board and the packaging section needs to be determined with the largest electronic component as a reference. This results in gaps between other smaller electronic components and the packaging section, increasing the battery volume without increasing the battery capacity, leading to a loss of battery energy density and affecting the internal stacking of electronic devices.

[0039] To address the problems in related technologies, this disclosure provides a battery and an electronic device. The battery includes a package, multiple tabs, and a battery protection board. The battery protection board is electrically connected to a negative tab. The negative tab among the multiple tabs is disposed in a first predetermined region on the side wall of the package. At least a portion of the first predetermined region on the side wall is recessed in a direction away from the battery protection board to form a clearance portion. At least a portion of the structure of the battery protection board faces the clearance portion. In this disclosure, by providing a recess in the side wall of the battery package to form a clearance portion, in the assembled state, at least a portion of the structure of the battery protection board can face the clearance portion and extend into the clearance portion, making the battery protection board closer to the package to fully utilize the gap space between the battery protection board and the package. This allows the battery to have a smaller volume while maintaining the same battery capacity, thereby increasing the battery's energy density.

[0040] According to exemplary embodiments of this disclosure, such as Figure 1 As shown, this disclosure provides a battery, such as a lithium-ion battery or a nickel-metal hydride battery, for providing electrical power to electronic devices.

[0041] like Figures 1 to 3 As shown, the battery includes a packaging section 10, and the battery cell 20 is disposed within the mounting space defined by the packaging section 10. The packaging section 10 can be a rigid metal shell or a soft film. Based on the type of packaging section 10, the battery can be classified into steel-cased batteries and pouch batteries.

[0042] like Figures 1 to 3 As shown, the battery also includes multiple tabs and a battery protection board 40. The tabs are metallic conductors led out from the positive and negative terminals of the cell 20. The tabs can be considered as contact points when the cell 20 is charged and discharged. The battery protection board 40 is connected to the multiple tabs through terminals, thereby forming an electrical connection with the cell 20 inside the encapsulation section 10. The multiple tabs include a negative tab 31, which is led out from the negative terminal of the cell 20 and is disposed in a first predetermined area 10a on one side wall of the encapsulation section 10. A negative terminal post 311 is disposed in the encapsulation section 10 opposite to the negative tab 31, and the negative tab 31 is connected to the battery protection board 40 through the negative terminal post 311.

[0043] See Figures 1 to 3 At least a portion of the first predetermined region 10a of the sidewall faces away from ( Figure 1 The battery protection plate 40 (in the opposite direction of the x-direction shown) is recessed to form a relief portion 11, and at least a portion of the structure of the battery protection plate 40 is directly opposite the relief portion 11.

[0044] It is understandable that, as the battery protection board 40 is equipped with various electronic components 42, different electronic components 42 are located in the thickness direction of the battery protection board 40. Figure 1The dimensions in the x-direction shown may differ. For example, the shape of the battery protection board 40 can be adapted, such as by setting the substrate 41 of the battery protection board 40 (described in detail below) as an irregularly shaped plate, so that the thicker electronic components 42 extend into the clearance portion 11, thereby bringing the substrate 41 of the battery protection board 40 closer to the encapsulation portion 10, so as to make full use of the gap space between the battery protection board 40 and the encapsulation portion 10.

[0045] In this embodiment of the present disclosure, by providing a recess on the side wall of the battery package to form a clearance portion, in the assembled state, at least a portion of the structure of the battery protection board can face the clearance portion and extend into the clearance portion, so that the battery protection board is closer to the package portion to make full use of the gap space between the battery protection board and the package portion. This allows the battery to have a smaller volume while keeping the battery capacity unchanged, thereby increasing the energy density of the battery.

[0046] In one exemplary embodiment, such as Figures 1 to 3 As shown, this embodiment of the present disclosure provides a battery, which includes a package 10, a plurality of tabs and a battery protection plate 40. The battery protection plate 40 is electrically connected to a negative tab 31. The negative tab 31 among the plurality of tabs is disposed in a first preset region 10a on the side wall of the package 10. At least a portion of the first preset region 10a on the side wall is recessed in a direction away from the battery protection plate 40 to form a clearance portion 11. At least a portion of the structure of the battery protection plate 40 is directly opposite to the clearance portion 11.

[0047] In this embodiment, see Figure 1 and Figure 3 In the arrangement direction of the battery protection board 40 and the encapsulation part 10 ( Figure 1 In the x-direction shown, the length of the positive electrode tab 32 (described in detail later) of the battery is greater than the length of the negative electrode tab 31.

[0048] Among them, such as Figure 2 As shown, the sidewall of the encapsulation portion 10 also includes a second preset region 10b. The first preset region 10a and the second preset region 10b constitute the entire surface of the sidewall. The projection of the battery protection plate 40 on the sidewall is offset from the second preset region 10b. (See reference...) Figures 1 to 3The multiple tabs also include a positive tab 32, which is disposed in the second preset region 10b. Since the positive tab 32 is usually provided with insulating adhesive to maintain insulation, and the material of the positive tab 32 is harder, more space is needed to store the bent positive tab 32. On the other hand, the negative tab 31 is made of a material with lower hardness and does not require insulating adhesive. Therefore, the first preset region 10a on the side wall of the encapsulation part 10 can be recessed, and the size of the negative tab 31 can be compressed to form a clearance part 11 in the first preset region 10a. The size of the clearance part 11 is sufficient to accommodate the entire battery protection board 40. A positive terminal post 321 is provided in the encapsulation part 10 opposite to the positive tab 32, and the positive tab 32 is connected to the battery protection board 40 through the positive terminal post 321.

[0049] Among them, such as Figure 3 As shown, the battery also includes a first electrical connector 51 and a second electrical connector 52.

[0050] See Figures 1 to 3 A first electrical connector 51 is disposed in a first preset region 10a for connecting the battery protection board 40 and the negative electrode tab 31. For example, see [reference needed]. Figure 3 The negative contact 44 of the battery protection board 40 is directly opposite the negative tab 31. The first electrical connector 51 can be in the form of a film or a block and is located between the negative contact 44 and the negative tab 31. One side of the first electrical connector 51 is connected to the negative contact 44 on the battery protection board 40, and the other side is connected to the negative tab 31. The connection method is such as welding or bonding.

[0051] See Figure 3 The first end of the second electrical connector 52 is disposed in the first preset region 10a and electrically connected to the positive contact 43 of the battery protection board 40, and the second end of the second electrical connector 52 is disposed in the second preset region 10b and electrically connected to the positive tab 32. For example, see [reference needed]. Figure 3 In the arrangement direction of the battery protection board 40 and the encapsulation part 10 ( Figure 1 In the x-direction shown, the battery protection board 40 is offset from the positive electrode tab 32, so that the positive electrode contact 43 on the battery protection board 40 is also offset from the positive electrode tab 32. The second electrical connector 52 includes a first structure, a bending structure and a second structure. The first structure, the bending structure and the second structure are connected in a Z-shape. The first structure is located in the first preset area 10a and is connected to the positive electrode contact 43 on the battery protection board 40. The second structure is located in the second preset area 10b and is connected to the positive electrode tab 32. Part of the bending structure is located in the first preset area 10a and the other part is located in the second preset area 10b.

[0052] In some embodiments, see Figure 3The side of the second structure that is away from the battery protection board 40 is flush with the side of the battery protection board 40 that is away from the negative electrode tab 31, so that the outer contour of the battery is rectangular, which makes it easy to fully fill the entire battery compartment.

[0053] In one exemplary embodiment, such as Figure 1 As shown, this embodiment of the present disclosure provides a battery, which includes a package 10, a plurality of tabs, and a battery protection plate 40. The battery protection plate 40 is electrically connected to a negative tab 31. The negative tab 31 of the plurality of tabs is disposed in a first predetermined region 10a on the side wall of the package 10. At least a portion of the first predetermined region 10a on the side wall is recessed in a direction away from the battery protection plate 40 to form a clearance portion 11. At least a portion of the structure of the battery protection plate 40 is directly opposite the clearance portion 11. The side wall also includes a second predetermined region 10b, and the plurality of tabs also include a positive tab 32, which is disposed in the second predetermined region 10b.

[0054] In this embodiment, in the arrangement direction of the encapsulation part 10 and the battery protection board 40, the length of the positive electrode tab 32 is the same as the length of the negative electrode tab 31. It should be noted that the same length does not mean that the values ​​are exactly the same; for example, there can be a difference of about 1 mm.

[0055] like Figure 2 As shown, and in combination Figures 4 to 9 The first preset region 10a includes a first sub-region 11a and a second sub-region 12a. The negative electrode tab 31 of the battery is located in the first sub-region 11a. At least a portion of the second sub-region 12a is recessed in the direction away from the battery protection plate 40 to form a relief portion 11.

[0056] In some embodiments, see Figure 4 and Figure 5 The entire area of ​​the second sub-region 12a is recessed in the direction away from the battery protection plate 40 to form a relief part 11. The relief part 11 is located between the positive electrode tab 32 and the negative electrode tab 31. The relief part 11 is also located on the side of the positive electrode tab 32 away from the negative electrode tab 31, and the relief part 11 is also located on the side of the negative electrode tab 31 away from the positive electrode tab 32.

[0057] In one example, see Figure 4 and Figure 5 For example, two through holes 45 can be opened on the substrate 41 of the battery protection board 40. The two through holes 45 are directly opposite to the first preset area 10a and the first sub-area 11a. In the assembled state, the positive electrode tab 32 and the negative electrode tab 31 are directly opposite to the two through holes 45 respectively. The positive electrode contact 43 on the substrate 41 can be connected to the positive electrode tab 32 through an electrical connection structure 50 with the same shape as the second electrical connector 52. The negative electrode contact 44 can also adopt the same electrical connection structure 50, which will not be described in detail.

[0058] See another example. Figure 6 and Figure 7 There is no need to open through holes 45 on the substrate 41. The position of the electronic components 42 disposed on the substrate 41 can be adapted so that the electronic components 42 are directly opposite the clearance portion 11. By reducing the size of the electrical connection structure 50 used to connect the positive / negative contacts and the tabs, the electronic components 42 can be inserted into the clearance portion 11 in the assembled state, thereby reducing the size of the battery in the x direction, improving space utilization, and thus improving the energy density of the battery.

[0059] In other embodiments, see Figure 8 and Figure 9 In the second sub-region 12a, a portion of the area is recessed in the direction away from the battery protection plate 40 to form a relief portion 11. The relief portion 11 may be located on the side of the positive electrode tab 32 away from the negative electrode tab 31, or it may be located between the positive electrode tab 32 and the negative electrode tab 31, or it may be located on the side of the negative electrode tab 31 away from the positive electrode tab 32.

[0060] According to exemplary embodiments of this disclosure, embodiments of this disclosure also provide an electronic device in which a battery provided in the foregoing embodiments of this disclosure is disposed. The electronic device may be a portable electronic product such as a smartphone, tablet computer, laptop computer, or smart wearable device.

[0061] The space inside portable electronic products for installing batteries is limited. The space between the battery encapsulation part 10 and the battery protection board 40 provided in the above-mentioned embodiments of this disclosure is fully utilized. Compared with batteries in related technologies, it is beneficial to set up a larger capacity battery in the electronic device, or to save space for other devices while keeping the battery capacity unchanged.

[0062] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0063] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery, characterized in that, include: The encapsulation part has a side wall surface, and the side wall surface has a first preset area; Multiple electrodes, including a negative electrode, wherein the negative electrode is disposed in the first preset area; The battery protection board is electrically connected to the negative electrode tab; Wherein, at least a portion of the first preset area of ​​the sidewall is recessed in a direction away from the battery protection plate to form a clearance portion, and at least a portion of the structure of the battery protection plate is directly opposite the clearance portion.

2. The battery according to claim 1, characterized in that, The sidewall surface further includes a second preset region, and the plurality of electrodes also includes a positive electrode, which is disposed in the second preset region. The projection of the battery protection plate on the side wall is offset from the second preset area.

3. The battery according to claim 2, characterized in that, The battery also includes: A first electrical connector is disposed in the first preset area, and the first electrical connector is used to connect the battery protection board and the negative electrode tab; The second electrical connector has a first end disposed in the first preset area and electrically connected to the battery protection board, and a second end disposed in the second preset area and electrically connected to the positive electrode tab.

4. The battery according to claim 3, characterized in that, The second electrical connector includes a first structure, a bent structure, and a second structure connected in a Z-shape. The first structure is disposed in the first preset area and electrically connected to the battery protection board, and the second structure is located in the second preset area and electrically connected to the positive electrode tab.

5. The battery according to claim 4, characterized in that, The side of the second structure opposite to the positive electrode tab is flush with the side of the battery protection board opposite to the negative electrode tab.

6. The battery according to any one of claims 2-5, characterized in that, Along the arrangement direction of the battery protection board and the encapsulation part, the length of the positive electrode tab is greater than the length of the negative electrode tab.

7. The battery according to claim 1, characterized in that, The first preset area includes a first sub-region and a second sub-region, and the negative electrode tab is disposed in the first sub-region; At least a portion of the second sub-region is recessed in a direction away from the battery protection plate to form the avoidance portion.

8. The battery according to claim 7, characterized in that, The battery protection board includes: The substrate is electrically connected to the plurality of electrodes through multiple electrical connection structures; Electronic components are disposed on the side of the substrate facing the packaging portion, and at least a portion of the electronic components are located within the clearance portion.

9. The battery according to claim 7 or 8, characterized in that, The plurality of tabs also includes a positive tab, and in the arrangement direction of the encapsulation portion and the battery protection plate, the length of the positive tab is the same as the length of the negative tab.

10. An electronic device, characterized in that, Includes the battery as described in any one of claims 1-9.

Images