Battery module and electronic equipment
By designing a notch area in the battery module and placing the protection circuit module within the notch, with the electrodes passing through the housing through-holes and electrically connected to the protection circuit module, the problem of improving battery energy density is solved, achieving higher energy density and better space arrangement.
Patent Information
- Application Number
- CN202422909850.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-11-27
AI Technical Summary
In current technology, the energy density of mobile phone batteries has reached a bottleneck and needs to be further improved through other means.
Design a battery module in which the battery body has a notch region in the thickness direction, at least part of the protection circuit module is located in the notch region, and the electrodes pass through the through holes of the housing and are electrically connected to the protection circuit module, thereby optimizing the internal space arrangement of the battery.
The energy density of the battery module has been improved, and the internal space layout of the electronic device has been optimized, increasing the battery capacity.
Smart Images
Figure CN223665603U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of electronic devices, and in particular to a battery module and an electronic device. BACKGROUND
[0002] Portable electronic devices such as mobile phones have been widely used in people's daily life due to their powerful functions. With the continuous improvement of the performance of mobile phones, mobile phone terminals have put forward higher requirements for the volumetric energy density of batteries. At present, the battery density of soft package batteries has basically reached a bottleneck, and other ways are needed to increase the energy density of mobile phone batteries.
[0003] In related technologies, the energy density of the battery is improved by using a steel shell battery and a vertical assembly of a circuit board. CONTENT OF THE UTILITY MODEL
[0004] In view of this, the present disclosure provides a battery module and an electronic device, which is beneficial to further improve the energy density of the battery.
[0005] Specifically, the technical scheme includes the following:
[0006] In a first aspect, the present disclosure provides a battery module, comprising a protection circuit module and a battery body.
[0007] The projection of the battery body in the thickness direction thereof has a notch region, and at least part of the projection of the protection circuit module in the thickness direction of the battery body is located in the notch region.
[0008] Optionally, the projection of the protection circuit module and the battery body in the thickness direction of the battery body jointly forms an approximately rectangular shape.
[0009] Optionally, the notch region is located at a corner of the rectangle.
[0010] Optionally, the battery body comprises a battery cell and a shell, and the shell is wrapped outside the battery cell.
[0011] Optionally, a through hole is arranged on the side wall of the shell adjacent to the notch region, the battery cell has an electrode, the electrode is located on the side wall of the battery cell close to the notch region, the electrode passes through the through hole and is electrically connected with the protection circuit module.
[0012] Optionally, the through hole comprises two, the two through holes are respectively located on the two side walls of the shell adjacent to the notch region, the electrode comprises a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively located on the two side walls of the battery cell close to the notch region.
[0013] Optionally, the through holes include two, the two through holes are located on the same side wall of the shell adjacent to the notch region, and the electrode includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are located on the same side wall of the battery cell close to the notch region.
[0014] Optionally, a liquid injection hole is arranged on the side wall of the shell adjacent to the notch region.
[0015] Optionally, the liquid injection holes include at least two, one of the liquid injection holes and the through hole are located on the same side wall of the shell, and the other liquid injection hole is located on an end surface of the shell close to the notch region and parallel to the side wall where the through hole is located.
[0016] Optionally, a projection of the battery body in the thickness direction is annular, and the notch region is located at the center of the annular.
[0017] Optionally, the shell is made of stainless steel.
[0018] In a second aspect, the embodiments of the present disclosure provide an electronic device including any of the battery modules in the first aspect.
[0019] The technical scheme provided by the embodiments of the present disclosure has at least the following beneficial effects:
[0020] In the battery module provided by the embodiments of the present disclosure, the battery body is provided with a notch, so that a projection of the battery body in the thickness direction forms a notch region, at least part of the protection circuit module is arranged in the notch region, the protection circuit module is arranged more compactly with the battery body, so that more space can be used to arrange the battery body, the energy density of the battery module is improved, and the internal space arrangement of the electronic device is optimized. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.
[0022] Figure 1 A top view of a battery module provided by the embodiments of the present disclosure;
[0023] Figure 2 A schematic view of a battery module provided by the embodiments of the present disclosure;
[0024] Figure 3 A partial schematic view of a battery module provided by the embodiments of the present disclosure;
[0025] Figure 4 This is a partial schematic diagram of another battery module provided in an embodiment of the present disclosure;
[0026] Figure 5 A schematic diagram of another battery module provided in the embodiments of this disclosure;
[0027] Figure 6 This is a schematic diagram of another battery module provided in an embodiment of the present disclosure.
[0028] The reference numerals in the figure are respectively:
[0029] 1-Protection circuit module; 2-Battery body;
[0030] 20 - Notch area; 21 - Cell; 22 - Casing;
[0031] 211-Electrode; 221-Through hole; 222-Injection hole;
[0032] 2111 - Positive electrode; 2112 - Negative electrode.
[0033] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0034] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0035] Figure 1 This is a top view of a battery module provided in an embodiment of the present disclosure, such as... Figure 1 As shown, the battery module includes a protection circuit module (PCM) 1 and a battery body 2. The projection of the battery body 2 in its thickness direction has a notch region 20, and at least a portion of the projection of the protection circuit module 1 in the thickness direction of the battery body 2 is located in the notch region 20.
[0036] The battery module provided by the embodiment of the present disclosure has a notch area 20 in the projection of the battery body 2 in the thickness direction, and at least part of the protection circuit module 1 is arranged in the notch area 20, so that the protection circuit module 1 is arranged more compactly with the battery body 2, thereby having more space for arranging the battery body 1, improving the energy density of the battery module, and facilitating the optimization of the internal space arrangement of the electronic device.
[0037] In order to make the technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the drawings.
[0038] Referring to Figure 1 , the battery module provided by the embodiment of the present disclosure includes a protection circuit module 1 and a battery body 2. The protection circuit module 1 and the battery body 2 are both flat structures, the projection of the battery body 2 in the thickness direction has a notch area 20, and at least part of the projection of the protection circuit module 1 in the thickness direction of the battery body 2 is located in the notch area 20. The protection circuit module 1 includes a printed circuit board (PCB), a flexible circuit board (FPC), and devices arranged on the printed circuit board and the flexible circuit board, such as protection chips, resistors, capacitors, field effect transistors, etc. The protection circuit module 1 is used to disconnect the battery body 2 when the temperature of the battery module is too high, overcharged or over-discharged, thereby providing protection for the battery module. The battery body with the notch area 20 is a special-shaped structure, and the protection circuit module 1 is at least partially located in the notch area 20, which reuses the arrangement space formed by the battery body 1, expands the volume of the battery body 1, and improves the energy density of the battery module.
[0039] Optionally, referring to Figure 1 , the projections of the protection circuit module 1 and the battery body 2 in the thickness direction of the battery body 2 together form an approximately rectangular shape. The protection circuit module 1 and the battery body 2 form a regular rectangular structure, so as to be easily arranged in various electronic devices, thereby improving the applicability of the battery module provided by the embodiment of the present disclosure.
[0040] In some embodiments of the present disclosure, as shown in Figure 1 , the notch area 20 is located at the corner of the rectangle. The protection circuit module 1 is located in the notch area 20 at the corner, so as to be electrically connected with other components in the electronic device, such as the mainboard.
[0041] Figure 2 A schematic diagram of a battery module provided by the embodiment of the present disclosure. In some embodiments of the present disclosure, as shown in Figure 2As shown, the battery body 2 includes the battery cell 21 and the shell 22, and the shell 22 is wrapped outside the battery cell 21. The shell 22 is in a flat shape with a notch, and the shape of the shell 22 is matched with the shape of the battery cell 21. The battery cell 21 is a laminated battery cell, and the battery cell 21 does not have a fillet at the edge inside the shell 22, which increases the volume of the battery cell 21 and is beneficial to improve the energy density of the battery module. The shell 22 is made of stainless steel, and the shell 22 made of stainless steel has high machining precision, so that the space inside the shell 22 can be fully utilized, and the installation tolerance of the battery module is reduced. The structure of the shell 22 with the notch improves the capacity of the shell 22, so that the battery cell 21 with a larger volume can be accommodated.
[0042] Optionally, as shown in Figure 2 the shell 22 is provided with a through hole 221 on the side wall adjacent to the notch area 20, the battery cell 21 has an electrode 211, the electrode 211 is located on the side wall of the battery cell 21 close to the notch area 20, and the electrode 211 passes through the through hole 221 and is electrically connected with the protection circuit module 1. The electrode 211 is formed by a stack of tabs in the battery cell 21, so as to supply power to the protection circuit module 1.
[0043] Figure 3 A partial schematic view of a battery module is provided for the embodiments of the present disclosure. In some embodiments of the present disclosure, as shown in Figure 3 the shell 22 is provided with a liquid injection hole 222 on the side wall adjacent to the notch area 20, and the liquid injection hole 222 can be used to inject electrolyte into the battery body 1, and the liquid injection hole 222 can be closed after the electrolyte is injected.
[0044] In some embodiments of the present disclosure, as shown in Figure 3 the through hole 221 includes two, the two through holes 221 are respectively located on the two side walls of the shell 22 adjacent to the notch area 20, the electrode 211 includes a positive electrode 2111 and a negative electrode 2112, and the positive electrode 2111 and the negative electrode 2112 are respectively located on the two side walls of the battery cell 21 close to the notch area 20. For example, the positive electrode 2111 passes through the through hole 221 on the side wall adjacent to the notch area 20 and parallel to the end surface of the shell 22, and the negative electrode 2112 passes through the through hole 221 on the side wall adjacent to the notch area 20 and perpendicular to the end surface of the shell 22.
[0045] Figure 4 Another partial schematic view of a battery module is provided for the embodiments of the present disclosure. In some embodiments of the present disclosure, as shown in Figure 4 the through hole 221 includes two, the two through holes 221 are respectively located on the two side walls of the shell 22 adjacent to the notch area 20, the electrode 211 includes a positive electrode 2111 and a negative electrode 2112, and the positive electrode 2111 and the negative electrode 2112 are respectively located on the two side walls of the battery cell 21 close to the notch area 20. For example, the positive electrode 2111 passes through the through hole 221 on the side wall adjacent to the notch area 20 and parallel to the end surface of the shell 22, and the negative electrode 2112 passes through the through hole 221 on the side wall adjacent to the notch area 20 and perpendicular to the end surface of the shell 22.
[0046] For example, referring to Figure 4 One of the injection holes 222 is located between two of the through holes 221.
[0047] In some embodiments of the present disclosure, referring to Figure 4 The injection holes 222 are at least two, one of which is located on the same side wall of the shell 22 as the through hole 221, and the other is located on the end face of the shell 22 close to the notch area 20 and parallel to the side wall where the through hole 221 is located. The battery body 1 is a straight prism, and the end face of the shell 22 at one end is parallel to the side wall of the shell 22 adjacent to the notch area 20 where one of the injection holes 222 is located, and the end face of the shell 22 is perpendicular to the side wall of the shell 22 adjacent to the notch area 20 where the other injection hole 222 is located. When injecting electrolyte into the battery module, electrolyte can be injected through two injection holes 222 at the same time, so that the electrolyte can be fully soaked in the battery cell 21, which is beneficial to improve the energy density of the battery module.
[0048] Figure 5 Another schematic diagram of a battery module is provided for embodiments of the present disclosure. In some embodiments of the present disclosure, as shown in Figure 5 The projection of the battery body 2 in the thickness direction is annular, and the notch area 20 is located at the center of the annular. The projection of the notch area 20 in the thickness direction of the battery body 2 is rectangular, and the protection circuit module 1 is located in the rectangular notch 20. The battery body 2 is provided with an electrode 211 on the side wall at the notch area 20. For example, two electrodes 211 are provided on the same side wall of the battery body 2 at the notch area 20. Alternatively, two electrodes 211 are provided on two adjacent side walls of the battery body 2 at the notch area 20. Alternatively, two electrodes 211 are provided on two opposite side walls of the battery body 2 at the notch area 20.
[0049] Figure 6 Another schematic diagram of a battery module is provided for embodiments of the present disclosure. Optionally, as shown in Figure 6 The protection circuit module 1 is L-shaped, and part of the protection circuit module 1 is located outside the notch area 20 and on one side of the end face of the battery body 2 adjacent to the notch area 20. This structure is suitable for the case where the protection circuit module 1 has a large volume, for example, the flexible circuit board in the protection circuit module 1 is arranged outside the notch area 20.
[0050] In addition, the present disclosure also provides an electronic device including the battery module in any of the above embodiments. The electronic device can be, but is not limited to, a remote controller, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III), an MP4 player (Moving Picture Experts Group Audio Layer IV), a notebook computer. The electronic device can also be referred to as a user equipment, a portable terminal, a laptop terminal, or other names. In the electronic device, the projection of the battery body 2 in the thickness direction has a notch area 20, and at least part of the protection circuit module 1 is arranged in the notch area 20, so that the protection circuit module 1 is arranged more compactly with the battery body 2, thereby having more space for arranging the battery body 1, improving the energy density of the battery module, and facilitating the optimization of the internal space arrangement of the electronic device.
[0051] It should be noted that "several", "at least one" mentioned herein refers to one or more, "multiple", "at least two" refers to two or more. The "and / or" describes the association between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.
[0052] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.
[0053] In the present disclosure, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.
[0054] In the description of the present disclosure, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.
[0055] In the description of the present disclosure, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure.
[0056] The above only describes the embodiments of the present disclosure and does not limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A battery module, characterized by, The battery module comprises a protection circuit module (1) and a battery body (2); The projection of the battery body (2) in the thickness direction thereof has a notch area (20), and at least part of the projection of the protection circuit module (1) in the thickness direction of the battery body (2) is located in the notch area (20).
2. The battery module of claim 1, wherein, The projection of the protection circuit module (1) and the battery body (2) in the thickness direction of the battery body (2) jointly forms an approximately rectangular shape.
3. The battery module of claim 2, wherein, The notch area (20) is located at a corner of the rectangle.
4. The battery module of claim 3, wherein, The battery body (2) comprises an electric core (21) and a shell (22), and the shell (22) is wrapped outside the electric core (21).
5. The battery module of claim 4, wherein, The shell (22) is provided with a through hole (221) on the side wall adjacent to the notch area (20), the electric core (21) is provided with an electrode (211) on the side wall adjacent to the notch area (20), and the electrode (211) passes through the through hole (221) and is electrically connected with the protection circuit module (1).
6. The battery module of claim 5, wherein, The through hole (221) comprises two, and the two through holes (221) are respectively located on the two side walls of the shell (22) adjacent to the notch area (20), the electrode (211) comprises a positive electrode (2111) and a negative electrode (2112), and the positive electrode (2111) and the negative electrode (2112) are respectively located on the two side walls of the electric core (21) adjacent to the notch area (20).
7. The battery module of claim 5, wherein, The through hole (221) comprises two, and the two through holes (221) are located on the same side wall of the shell (22) adjacent to the notch area (20), the electrode (211) comprises a positive electrode (2111) and a negative electrode (2112), and the positive electrode (2111) and the negative electrode (2112) are located on the same side wall of the electric core (21) adjacent to the notch area (20).
8. The battery module of claim 5, wherein, The shell (22) is provided with a liquid injection hole (222) on the side wall adjacent to the notch area (20).
9. The battery module of claim 8, wherein, The liquid injection hole (222) comprises at least two, one of which is located on the same side wall of the shell (22) as the through hole (221), and the other is located on the end surface of the shell (22) adjacent to the notch area (20) and parallel to the side wall where the through hole (221) is located.
10. The battery module of claim 2, wherein, The projection of the battery body (2) in the thickness direction thereof is annular, and the notch area (20) is located at the center of the annular shape.
11. The battery module according to any one of claims 4 to 9, characterized in that The shell (22) is made of stainless steel.
12. An electronic device, comprising: The battery module comprises a protection circuit module (1) and a battery body (2);