Battery

Abstract

The utility model belongs to the technical field of secondary batteries, and particularly provides a battery. The lithium ion battery comprises a battery cell; the protection plate is packaged at the head part of the battery cell; the electronic component is arranged on the inner side surface of the protection plate in the thickness direction and is arranged between the protection plate and the battery core after the protection plate is shaped; according to the utility model, the electronic component is arranged on the side surface, close to the battery cell, of the protection plate, and the protection plate is packaged at the head part of the battery cell through shaping of the protection plate, so that the thickness of the battery is reduced on the premise that the capacity of the battery does not need to be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of secondary batteries, and specifically relates to a battery. Background Art

[0002] In recent years, ultra-thin portable computers or mobile devices have been sought after by consumers. Moreover, as the thickness of electronic devices on the market decreases, the battery capacity is often lost, so consumers want electronic devices to be light, thin and portable while ensuring the battery capacity (at least ensuring that the battery capacity remains unchanged).

[0003] Based on this, it is urgent to invent a battery to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to reduce the thickness of the battery without sacrificing the battery capacity. In view of the above problem, a battery design scheme is provided, which is suitable for the design of products with a battery thickness of less than 3 mm.

[0005] The technical solution of the utility model to solve the above technical problems is to provide a battery, including: at least a single battery cell; and also including:

[0006] A protection plate, packaged at the head of the battery cell;

[0007] The electronic components are mounted on a side of the protection plate close to the battery cell and are placed between the protection plate and the battery cell after the protection plate is shaped.

[0008] Specifically, it also includes:

[0009] An adapter sheet is fixed on the protection plate, and the adapter sheet and the electronic component are arranged on the same side;

[0010] The protective plate is shaped by bending the adapter sheet so that its thickness direction is parallel to the length direction of the battery cell. At this time, a receiving cavity is formed between the protective plate and the battery cell.

[0011] More specifically, the adapter is welded to the tabs in the battery cell, and the tabs are parallel and straight without bending, which can effectively reduce the thickness of the battery head;

[0012] The number of the pole tabs is multiple, and the number of the adapter sheets matches the number of the pole tabs.

[0013] More specifically, the adapter plate includes an outer plate and an inner plate which are integrally arranged and formed in a bent manner, and the inner plate is fixed on the protective plate;

[0014] The corresponding pole lug is sandwiched between the outer sheet and the inner sheet and is welded to the pole lug.

[0015] Specifically, it also includes: an adhesive component, and the battery is fixedly connected to the protection plate through the adhesive component.

[0016] Preferably, the number of the battery cells is two, and a side packaging layer for assembling the two battery cells is provided between the sides of the two battery cells;

[0017] The protection plate is provided with an avoidance groove for preventing the protection plate from interfering with the side packaging layer.

[0018] In one specific embodiment, the protection board includes a PCB board and an FPC board.

[0019] In terms of size, the difference between the length of the battery and the length of the battery cell is not less than 5.5 mm.

[0020] In terms of material, the adapter is made of nickel.

[0021] In one specific embodiment, the inner side of the protection plate is covered with an insulating adhesive layer for bonding the electronic components.

[0022] The beneficial effect of the utility model is that the electronic components are installed on a side of the protection plate close to the battery cell, and the protection plate is shaped so that the protection plate is encapsulated in the head of the battery cell. The battery cell tabs are welded and extended straight without bending. Only the nickel sheet on the protection plate needs to be bent and shaped, which effectively ensures the maximum utilization of the battery head space and reduces the thickness of the battery without reducing the battery capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the implementation modes of the present invention, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the battery of the utility model;

[0025] Figure 2 It is an exploded diagram of the battery of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the protection plate in the battery of the utility model;

[0027] Figure 4 It is an enlarged view of point A in the protection plate of the utility model.

[0028] Reference numerals:

[0029] 1-battery; 10-battery cell; 11-protection board; 110-PCB board; 111-FPC board; 12-adapter; 120-inner sheet; 121-outer sheet; 13-adhesive; 14-side packaging layer; 15-label; 16-top packaging layer; 17-bottom packaging layer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] refer to Figure 1 and Figure 2 The utility model provides a battery 1, which can be applied to ultra-thin portable electronic devices or mobile devices due to its thinning characteristics. Of course, in the future development of science and technology, the battery 1 may also have other application scenarios. It should be noted that the battery 1 can be manufactured, used, sold and licensed separately. It can also be used as a battery monomer and combined with multiple batteries 1 of the same specification and model to form a battery pack for use.

[0032] Implementation Method 1

[0033] The battery 1 includes at least a single battery cell 10. In this specific embodiment, the battery 1 includes two battery cells 10 assembled by packaging (refer to the following for details). In order to protect the battery 1, specifically to continuously monitor the voltage of the battery cell 10 and the current of the charge and discharge circuit in an environment of -20°C to +60°C and timely control the on and off of the current circuit, the battery 1 also includes a protection board 11 and electronic components mounted on the protection board 11. Specifically, the protection board 11 is packaged at the head of the battery cell 10, the electronic components are welded to a side of the protection board 11 close to the battery cell 10, and are placed between the protection board 11 and the battery cell 10 after the protection board 11 is shaped, so as to reduce the thickness of the battery 1 without losing the capacity of the battery 1.

[0034] Implementation Method 2

[0035] The difference between this embodiment and the first embodiment is that in order to realize the electrical connection between the tab and the external circuit, the battery 1 further includes a switching piece 12 fixed on the protection plate 11 and arranged on the same side as the electronic components.

[0036] The following is a detailed description of how to achieve the shaping of the protection plate 11 through the adapter 12: before shaping, the vertical cross-section of the adapter 12 is in an "L" shape, and at this time the width direction of the protection plate 11 is parallel to the length direction of the battery cell 10. Afterwards, when the adapter 12 is shaped, the protection plate 11 is rotated by bending the adapter 12, so that the thickness direction of the protection plate 11 is parallel to the length direction of the battery cell 10, and then the adapter 12 is flattened. Obviously, the flattened adapter 12 still has a certain thickness, and a receiving cavity is formed between the protection plate 11 and the battery cell 10. Since the electronic components and the adapter 12 are located on the same side of the protection plate 11, that is, the electronic components are placed in the aforementioned receiving cavity, there is no need to occupy additional space in the battery 1 to accommodate the electronic components, which not only reduces the thickness of the battery 1 (compared to the protection plate 11 set in the thickness direction of the battery 1), but also does not need to reduce the capacity of the battery 1. And the other parts of this embodiment are the same as embodiment 1, and will not be repeated here.

[0037] Implementation 3

[0038] The difference between this embodiment and embodiment 2 is that: in order to realize the connection between the tabs in the battery cell 10 and the external circuit, the adapter 12 is welded to the tabs in the battery cell 10. Among them, the number of tabs is multiple, and the number of adapters 12 is adapted to the number of tabs. In this specific embodiment, the number of adapters 12 is four. And the other parts of this embodiment are the same as embodiment 2, and will not be repeated here.

[0039] Implementation 4

[0040] The difference between this embodiment and embodiment 3 is that: Figure 3 and Figure 4 , the following describes in detail how to weld the tabs to the adapter 12. The adapter 12 includes an outer sheet 121 and an inner sheet 120 that are integrally arranged and formed in a bent manner. The inner sheet 120 and the outer sheet 121 are arranged vertically, and the length of the inner sheet 120 is less than the length of the outer sheet 121. In order to ensure that the adapter 12 still has a certain thickness after being flattened, the inner sheet 120 is fixed on the protective plate 11. Specifically, a corresponding tab is sandwiched between the outer sheet 121 and the inner sheet 120 and welded to the tab to achieve welding of the tab and the adapter 12.

[0041] In order to ensure the conductivity of the adapter sheet 12, the material of the adapter sheet 12 is nickel. The other parts of this embodiment are the same as those of the embodiment 3, and will not be described in detail here.

[0042] Implementation method 5

[0043] The difference between this embodiment and embodiment 1 is that in order to realize the packaging of the protection plate 11, the battery 1 further includes an adhesive 13, and the battery 1 realizes the packaging of the protection plate 11 through the adhesive 13. The other parts of this embodiment are the same as those of embodiment 1, and will not be described here.

[0044] Implementation 6

[0045] The difference between this embodiment and embodiment 1 is that: in this specific embodiment, the number of battery cells 10 is two, and the two battery cells 10 are symmetrically arranged. In other words, the sides of the two battery cells 10 in the thickness direction are butt together. In order to realize the encapsulation of the two battery cells 10, there is a side encapsulation layer 14, a top encapsulation layer 16 and a bottom encapsulation layer 17 between the sides of the two battery cells 10 for assembling the two battery cells 10. Correspondingly, in order to prevent the protection plate 11 from interfering with the side encapsulation layer 14, the protection plate 11 is provided with an avoidance groove at the corresponding position of the side encapsulation layer 14. It should be noted that labels 15 are also affixed to the opposite sides (front and back sides) of the two battery cells 10. And the other parts of this embodiment are the same as those in embodiment 1, which will not be repeated here.

[0046] Implementation 7

[0047] The difference between this embodiment and the first embodiment is that the protection board 11 includes a PCB board 110 and an FPC board 111. The other parts of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0048] Implementation 8

[0049] The difference between this embodiment and embodiment 1 is that: in order to realize the direct implementation of the head packaging of the battery cell 10 after the protection plate 11 is welded, and to facilitate the packaging of the protection plate 11 at the head of the battery 1, the difference between the length value of the battery 1 and the length value of the battery cell 10 is not less than 5.5mm, so as to meet the minimum assembly space between the protection plate 11 and the battery cell tab. After welding, the battery cell tab does not need to be bent, only the nickel sheet on the protection plate is bent. Of course, in other specific embodiments, the difference between the length value of the battery 1 and the length value of the battery cell 10 is not limited. And the other parts of this embodiment are the same as embodiment 1, which will not be repeated here.

[0050] Implementation method 9

[0051] The difference between this embodiment and embodiment 1 is that, in order to avoid increasing the thickness of the battery 1, specifically, there is no need to apply an insulating layer on the side of the protection plate 11 close to the battery cell 10, and an insulating adhesive layer for bonding electronic components is applied to the inner side of the protection plate 11. The other parts of this embodiment are the same as those of embodiment 1, and will not be described in detail here.

[0052] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A battery comprising: At least a single battery cell; characterized in that: it also includes: A protection plate, packaged at the head of the battery cell; The electronic components are mounted on a side of the protection plate close to the battery cell and are placed between the protection plate and the battery cell after the protection plate is shaped; An adapter sheet is fixed on the protection plate, and the adapter sheet and the electronic component are arranged on the same side; The protective plate is shaped by bending the adapter sheet so that its thickness direction is parallel to the length direction of the battery cell. At this time, a receiving cavity is formed between the protective plate and the battery cell.

2. The battery according to claim 1, characterized in that: The adapter is welded to the tab in the battery cell; The number of the pole tabs is multiple, and the number of the adapter sheets matches the number of the pole tabs.

3. The battery according to claim 2, characterized in that: The adapter plate includes an outer plate and an inner plate which are integrally arranged and formed in a bent manner, and the inner plate is fixed on the protective plate; The corresponding pole lug is sandwiched between the outer sheet and the inner sheet and is welded to the pole lug.

4. The battery according to claim 1, characterized in that: Also includes: An adhesive member is provided, and the battery is packaged by the protective plate through the adhesive member.

5. The battery according to claim 1, characterized in that: The number of the battery cells is two, and a side packaging layer for assembling the two battery cells is provided between the sides of the two battery cells; The protection plate is provided with an avoidance groove for preventing the protection plate from interfering with the side packaging layer.

6. The battery according to claim 1, characterized in that: The protection board includes a PCB board and an FPC board.

7. The battery according to claim 1, characterized in that: The difference between the length of the battery and the length of the battery cell is not less than 5.5 mm.

8. The battery according to claim 1, characterized in that: The material of the adapter plate is nickel material.

9. The battery according to claim 1, characterized in that: The inner side surface of the protection plate is covered with an insulating adhesive layer for bonding the electronic components.

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