Battery structure and electronic device

Abstract

The utility model provides a kind of battery structure and electronic equipment, including protection plate;First electric core has first recess and first tab assembly, the first recess is formed in the head of the first electric core, the first tab assembly extends from the inside of the first electric core to the outside of the first recess;Second electric core has second recess and second tab assembly, the second recess is formed in the head of the second electric core, the second tab assembly extends from the inside of the second electric core to the outside of the second recess;Wherein, the head of the first electric core and the second electric core is oppositely arranged, the first recess is towards upper, the second recess is towards lower, the protection plate is located between the first recess and the second recess, and is connected with the first tab assembly, the second tab assembly;The utility model can effectively reduce the size of protection plate and the overall size of battery structure, improve battery energy density and reduce cost.

Description

Technical Field

[0001] This utility model belongs to the field of battery design technology, specifically relating to a battery structure and electronic device. Background Technology

[0002] In the traditional cell arrangement design of laptop batteries, the heads of two cells are usually placed opposite each other, and the groove surfaces of the two cells face completely the same direction. This arrangement design has the problems of increasing the size of the protection board and the overall size of the battery structure, reducing the battery energy density and increasing the cost.

[0003] Specifically, when the grooved surfaces of two battery cells face the same direction, the structural characteristics of the cells themselves require a greater welding distance when welding the cell tabs, thus increasing the size of the protection board and the overall length of the battery structure. This increased size also means that the battery structure cannot fully utilize the available volume within the limited internal cavity of a laptop, indirectly compressing the effective number of battery cells or the capacity selection space for individual cells, directly lowering the energy density, and leading to increased costs. Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides a battery structure and electronic device that can effectively reduce the size of the protection board and the overall size of the battery structure, thereby increasing battery energy density and reducing costs.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides a battery structure, including: Protection board; A first battery cell has a first groove and a first tab assembly, the first groove being formed at the head of the first battery cell, and the first tab assembly extending from the interior of the first battery cell to the exterior of the first groove; The second cell has a second groove and a second tab assembly, the second groove being formed at the head of the second cell, and the second tab assembly extending from the interior of the second cell to the exterior of the second groove; The heads of the first battery cell and the second battery cell are arranged opposite each other, the first groove faces upward and the second groove faces downward, and the protection plate is disposed between the first groove and the second groove and is connected to the first electrode assembly and the second electrode assembly.

[0006] In some implementations, the protective plate includes a first surface and a second surface; The first surface is attached to the inner wall of the first groove, and the second surface is attached to the inner wall of the second groove, thereby improving assembly stability and reducing the overall size of the battery structure.

[0007] In some implementations, the first electrode assembly includes a first positive electrode and a first negative electrode; The first positive electrode and the first negative electrode are welded to the first surface. Pads are formed on the first surface corresponding to the positions of the first positive electrode and the first negative electrode. Stable and low-resistance conductive channels are constructed between the first positive electrode, the first negative electrode and the protection board through the pads, realizing the welding connection between the first electrode assembly and the protection board, and ensuring welding reliability and simplifying the assembly process through structural design.

[0008] In some implementations, the first positive electrode is provided with a nickel transfer terminal; The first positive electrode is welded to the first surface through the nickel transfer connection end, which improves the welding stability and welding convenience of the first positive electrode.

[0009] In some implementations, the second electrode assembly includes a second positive electrode and a second negative electrode; The second positive electrode and the second negative electrode are welded to the second surface. Pads are formed on the second surface corresponding to the positions of the second positive electrode and the second negative electrode. Stable and low-resistance conductive channels are constructed between the second positive electrode, the second negative electrode and the protection board through the pads, realizing the welding connection between the first electrode assembly and the protection board, and ensuring welding reliability and simplifying the assembly process through structural design.

[0010] In some implementations, a first adhesive tape is also included; The first adhesive tape covers the second surface and the second tab assembly, and the covering of the first adhesive tape serves to provide insulation and protection.

[0011] In some implementations, the first adhesive tape is DuPont paper, high-temperature adhesive tape, or foam. DuPont paper focuses on protection and isolation, high-temperature adhesive tape focuses on bonding and shielding at high temperatures, and foam focuses on cushioning, shock absorption, and sealing. The appropriate type of adhesive tape is selected according to the application scenario to achieve the required protection.

[0012] Some implementations also include a plastic frame; The frame has an outer frame and a first plane connected to the outer frame; The outer frame is used to surround the outer edges of the first cell and the second cell. The first plane corresponds to the position of the protection plate and is located below the protection plate. By setting the frame, the overall stability of the battery structure is improved, thereby improving the stability of use.

[0013] Some implementations also include label paper and insulating tape; The trademark paper covers the outside of the plastic frame, the first battery cell, and the second battery cell. The insulating tape is attached to the trademark paper and is positioned corresponding to the first plane. The trademark paper serves as an identifier, while the insulating tape serves as a fixation and insulation protection.

[0014] On the other hand, this application also provides an electronic device, including a housing and the battery structure described in any of the above claims; The battery structure is installed inside the housing, and its application can improve battery energy density and reduce cost.

[0015] In summary, this utility model has at least the following advantages: 1. The present invention provides a battery structure in which a first battery cell and a second battery cell are arranged head-to-head with the first groove of the first battery cell and the second groove of the second battery cell facing different directions. A protection plate is placed between the first groove and the second groove. Due to the different orientations of the first groove and the second groove, the first tab assembly extending to the outside of the first groove and the second tab assembly extending to the outside of the second groove are welded to different surfaces of the protection plate, thereby solving the problem of increasing the welding distance between the head-to-head battery cells, effectively reducing the size of the protection plate and the overall size of the battery structure, improving the battery energy density and reducing costs.

[0016] 2. The electronic device provided by this utility model, after applying the above-mentioned battery structure, can improve battery energy density and reduce cost. Attached Figure Description

[0017] Figure 1 This is a top view of the battery structure provided in Embodiment 1 of this utility model; Figure 2 for Figure 1 Enlarged view of section A; Figure 3 This is a bottom view of the battery structure provided in Embodiment 1 of this utility model; Figure 4 for Figure 3 Enlarged view of section B; Figure 5 This is a schematic diagram showing the connection between the first electrode assembly and the protection plate provided in Embodiment 2 of this utility model; Figure 6 This is a schematic diagram showing the connection between the second electrode assembly and the protection plate provided in Embodiment 2 of this utility model; Figure 7 This is a schematic diagram of the battery structure provided in Embodiment 2 of this utility model; Figure 8 This is a cross-sectional view of the battery structure provided in Embodiment 2 of this utility model; Figure 9 for Figure 8 Enlarged view of section C; Figure 10 This is a schematic diagram of the structure of the adhesive frame provided in Embodiment 2 of this utility model; Figure 11 A schematic diagram of the electronic device provided in Embodiment 3 of this utility model; Marked in the image: 10. Battery structure; 20. Electronic equipment; 100, First cell; 110, First groove; 120, First tab assembly; 121, First positive electrode; 1211, Nickel-to-metal connector; 122, First negative electrode; 200, Second cell; 210, Second groove; 220, Second tab assembly; 221, Second positive electrode; 222, Second negative electrode; 300. Protection board; 400. First adhesive tape; 500, Frame; 510, Outer frame; 520, First plane; 600. Label paper; 700. Insulating tape; 800. Casing. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1: Please see Figures 1-4 A battery structure 10 includes a protection board 300, a first battery cell 100, and a second battery cell 200, wherein the protection board 300 is welded to the first battery cell 100 and the second battery cell 200.

[0023] The first battery cell 100 has a first groove 110 and a first tab assembly 120. The first groove 110 is formed at the head of the first battery cell 100, and the first tab assembly 120 extends from the interior of the first battery cell 100 to the exterior of the first groove 110.

[0024] The first groove 110 is also the head groove of the first battery cell 100. The head groove is the structural adaptation area of ​​the first battery cell 100, used to optimize the spatial layout and protect the internal components. For example, the area of ​​the first groove 110 covers the root and top sealant of the first tab assembly 120. The recessed design can prevent external parts from directly squeezing the first tab assembly 120 or the seal during assembly or transportation, reducing the risk of leakage caused by breakage of the first tab assembly 120 or seal failure. The first tab assembly 120 is the current inlet and outlet of the first battery cell 100, responsible for transferring the electrical energy inside the first battery cell 100 to the external circuit. For example, during charging, the external current enters the first battery cell 100 through the first tab assembly 120, causing the active material to undergo a chemical reaction to store electrical energy; during discharging, the electrical energy inside the first battery cell 100 is transferred to the external circuit through the first tab assembly 120 to power the device.

[0025] The second battery cell 200 has a second groove 210 and a second tab assembly 220. The second groove 210 is formed at the head of the second battery cell 200, and the second tab assembly 220 extends from the interior of the second battery cell 200 to the exterior of the second groove 210.

[0026] Similarly, the second groove 210 is also the head groove of the second battery cell 200. The head groove is the structural adaptation area of ​​the second battery cell 200, used to optimize the spatial layout and protect internal components. For example, the area of ​​the second groove 210 covers the root and top sealant of the second tab assembly 220. The recessed design can prevent external parts from directly squeezing the second tab assembly 220 or the seal during assembly or transportation, reducing the risk of leakage caused by breakage of the second tab assembly 220 or seal failure. The second tab assembly 220 is the current inlet and outlet of the second battery cell 200, responsible for transferring the electrical energy inside the second battery cell 200 to the external circuit. For example, during charging, external current enters the second battery cell 200 through the second tab assembly 220, causing the active material to undergo a chemical reaction to store electrical energy; during discharging, the electrical energy inside the second battery cell 200 is transferred to the external circuit through the second tab assembly 220 to power the device.

[0027] The heads of the first battery cell 100 and the second battery cell 200 are arranged opposite each other, the first groove 110 faces upward and the second groove 210 faces downward, and the protection plate 300 is disposed between the first groove 110 and the second groove 210 and connected to the first electrode assembly 120 and the second electrode assembly 220.

[0028] As is known from the background technology, in the existing cell arrangement design of laptop batteries, the heads of two cells are usually set opposite each other, and the groove surfaces of the two cells are oriented in the same direction. This arrangement design has the problems of increasing the size of the protection board 300 and the overall size of the battery structure, reducing the battery energy density and increasing the cost.

[0029] In this embodiment, to address the aforementioned problem, the first groove 110 of the first cell 100 and the second groove 210 of the second cell 200 are oriented in different directions. The protection plate 300 is placed between the first groove 110 and the second groove 210. Since the first groove 110 and the second groove 210 are oriented differently, the first tab assembly 120 extending to the outside of the first groove 110 and the second tab assembly 220 extending to the outside of the second groove 210 are welded to different surfaces of the protection plate 300, thereby solving the problem of increasing the welding distance between head-to-head cells, effectively reducing the size of the protection plate 300 and the overall size of the battery structure, improving battery energy density and reducing costs.

[0030] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 1-4 Based on the above, refer to Figures 5-10 .

[0031] In this embodiment, the protection plate 300 includes a first surface and a second surface; the first surface is attached to the inner wall of the first groove 110, and the second surface is attached to the inner wall of the second groove 210, thereby improving assembly stability and reducing the overall size of the battery structure.

[0032] The protection plate 300 is typically a rectangular plate with a first surface and a second surface arranged opposite to each other. The first surface of the protection plate 300 is attached to the inner wall of the first groove 110, where the inner wall of the first groove 110 is the portion of the first groove 110 parallel to the lower surface of the first cell 100. The second surface is attached to the inner wall of the second groove 210, where the inner wall of the second groove 210 is the portion of the second groove 210 parallel to the upper surface of the second cell 200.

[0033] The first surface is attached to the inner wall of the first groove 110, and the second surface is attached to the inner wall of the second groove 210, so that the first battery cell 100, the protection plate 300 and the second battery cell 200 are in a state of tight contact in sequence. This improves assembly stability and reduces the area occupied.

[0034] In some embodiments, the first tab assembly 120 includes a first positive electrode 121 and a first negative electrode 122; the first positive electrode 121 and the first negative electrode 122 are welded to a first surface, and pads are formed on the first surface corresponding to the positions of the first positive electrode 121 and the first negative electrode 122. A stable and low-resistance conductive channel is constructed between the first positive electrode 121, the first negative electrode 122 and the protection plate 300 through the pads, thereby realizing the welding connection between the first tab assembly 120 and the protection plate 300, and ensuring welding reliability and simplifying the assembly process through structural design.

[0035] Specifically, a nickel transfer connection end 1211 is provided on the first positive electrode 121; the first positive electrode 121 is welded to the first surface through the nickel transfer connection end 1211, thereby improving the welding stability and welding convenience of the first positive electrode 121.

[0036] Furthermore, the second tab assembly 220 includes a second positive electrode 221 and a second negative electrode 222; the second positive electrode 221 and the second negative electrode 222 are welded to a second surface, and pads are formed on the second surface corresponding to the positions of the second positive electrode 221 and the second negative electrode 222. A stable and low-resistance conductive channel is constructed between the second positive electrode 221, the second negative electrode 222 and the protection plate 300 through the pads, thereby realizing the welding connection between the first tab assembly 120 and the protection plate 300, and ensuring welding reliability and simplifying the assembly process through structural design.

[0037] Please see Figure 9In some embodiments, the battery structure further includes a first adhesive tape 400; the first adhesive tape 400 covers the second surface and the second tab assembly 220, and the coverage of the first adhesive tape 400 serves to provide insulation and protection.

[0038] Specifically, the first adhesive tape 400 can be DuPont paper, high-temperature adhesive tape, or foam. DuPont paper focuses on protection and isolation, high-temperature adhesive tape focuses on bonding and shielding at high temperatures, and foam focuses on cushioning, shock absorption, and sealing. The appropriate type of adhesive tape is selected according to the application scenario to achieve the required protection.

[0039] Please see Figure 10 In some embodiments, the battery structure further includes a frame 500; the frame 500 has an outer frame 510 and a first plane 520 connected to the outer frame 510. The first plane 520 is connected to the inner center of the outer frame 510. Specifically, the outer frame 510 is used to surround the outer edges of the first cell 100 and the second cell 200. The first plane 520 corresponds to the position of the protection plate 300 and is located below the protection plate 300, adapting to the size of the protection plate 300.

[0040] Here, the overall stability of the battery structure is improved by setting the frame 500, thereby improving the stability of use. The first plane 520 can support and protect the protection plate 300.

[0041] Please see Figures 7-9 In some embodiments, the battery structure further includes a label paper 600 and an insulating adhesive paper 700; the label paper 600 covers the outside of the frame 500, the first battery cell 100 and the second battery cell 200, and the insulating adhesive paper 700 is attached to the label paper 600 and is positioned corresponding to the first plane 520. The label paper 600 serves as an identifier, while the insulating adhesive paper 700 serves as a fixation and insulation protection.

[0042] Example 3: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 1-10 Based on the above, refer to Figure 11 .

[0043] Please see Figure 11 This application also provides an electronic device 20, including a housing 800 and a battery structure 10 as described in Embodiment 1 or Embodiment 2 above.

[0044] The battery structure is installed within the housing 800. For details, please refer to [link / reference]. Figures 1-4 The battery structure includes a protection plate 300, a first battery cell 100, and a second battery cell 200. The protection plate 300 is welded to the first battery cell 100 and the second battery cell 200.

[0045] The first battery cell 100 has a first groove 110 and a first tab assembly 120. The first groove 110 is formed at the head of the first battery cell 100, and the first tab assembly 120 extends from the interior of the first battery cell 100 to the exterior of the first groove 110.

[0046] The second battery cell 200 has a second groove 210 and a second tab assembly 220. The second groove 210 is formed at the head of the second battery cell 200, and the second tab assembly 220 extends from the interior of the second battery cell 200 to the exterior of the second groove 210.

[0047] The heads of the first battery cell 100 and the second battery cell 200 are arranged opposite each other, the first groove 110 faces upward and the second groove 210 faces downward, and the protection plate 300 is disposed between the first groove 110 and the second groove 210 and connected to the first electrode assembly 120 and the second electrode assembly 220.

[0048] In this embodiment, the first groove 110 of the first cell 100 and the second groove 210 of the second cell 200 are oriented in different directions. The protection plate 300 is placed between the first groove 110 and the second groove 210. Since the first groove 110 and the second groove 210 are oriented differently, the first tab assembly 120 extending to the outside of the first groove 110 and the second tab assembly 220 extending to the outside of the second groove 210 are welded to different surfaces of the protection plate 300, thereby solving the problem of increasing the welding distance between the head-to-head cells, effectively reducing the size of the protection plate 300 and the overall size of the battery structure, improving the battery energy density and reducing costs.

[0049] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. A battery structure, characterized in that, The battery structure (10) includes: Protection board (300); The first battery cell (100) has a first groove (110) and a first tab assembly (120), the first groove (110) being formed at the head of the first battery cell (100) and the first tab assembly (120) extending from the interior of the first battery cell (100) to the exterior of the first groove (110); The second battery cell (200) has a second groove (210) and a second tab assembly (220), the second groove (210) being formed at the head of the second battery cell (200) and the second tab assembly (220) extending from the interior of the second battery cell (200) to the exterior of the second groove (210); The heads of the first battery cell (100) and the second battery cell (200) are arranged opposite each other, the first groove (110) faces upward and the second groove (210) faces downward, and the protection plate (300) is disposed between the first groove (110) and the second groove (210) and is connected to the first electrode assembly (120) and the second electrode assembly (220).

2. The battery structure according to claim 1, characterized in that, The protective plate (300) includes a first surface and a second surface; The first surface is attached to the inner wall of the first groove (110), and the second surface is attached to the inner wall of the second groove (210).

3. The battery structure according to claim 2, characterized in that, The first electrode assembly (120) includes a first positive electrode (121) and a first negative electrode (122); The first positive electrode (121) and the first negative electrode (122) are welded to the first surface, and pads are formed on the first surface at positions corresponding to the first positive electrode (121) and the first negative electrode (122).

4. The battery structure according to claim 3, characterized in that, The first positive electrode (121) is provided with a nickel transfer connection terminal (1211). The first positive electrode (121) is welded to the first surface through the nickel transfer connection end (1211).

5. The battery structure according to claim 2, characterized in that, The second electrode assembly (220) includes a second positive electrode (221) and a second negative electrode (222); The second positive electrode (221) and the second negative electrode (222) are welded to the second surface, and pads are formed on the second surface at positions corresponding to the second positive electrode (221) and the second negative electrode (222).

6. The battery structure according to claim 5, characterized in that, It also includes the first adhesive tape (400); The first adhesive tape (400) covers the second surface and the second tab assembly (220).

7. The battery structure according to claim 6, characterized in that, The first adhesive tape (400) is DuPont paper, high-temperature adhesive tape, or foam.

8. The battery structure according to any one of claims 1-7, characterized in that, It also includes a plastic frame (500); The frame (500) has an outer frame (510) and a first plane (520) connected to the outer frame (510). The outer frame (510) is used to surround the outer edges of the first battery cell (100) and the second battery cell (200), and the first plane (520) corresponds to the position of the protection plate (300) and is located below the protection plate (300).

9. The battery structure according to claim 8, characterized in that, It also includes label paper (600) and insulating adhesive paper (700). The trademark paper (600) covers the outside of the adhesive frame (500), the first battery cell (100) and the second battery cell (200), and the insulating adhesive paper (700) is attached to the trademark paper (600) and corresponds to the position of the first plane (520).

10. An electronic device, characterized in that, The electronic device (20) includes a housing (800) and a battery structure (10) according to any one of claims 1-9. The battery structure is installed inside the housing (800).

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