Battery module and electronic equipment
By placing the protection devices and connectors of the protection circuit module outside the battery casing, the problem of space occupation by the protection circuit board is solved, enabling a battery design with larger cell capacity and longer range.
Patent Information
- Application Number
- CN202422974090.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In the existing technology, the protection circuit board occupies a large space inside the electronic device, affecting the battery capacity and battery life.
The protection devices and connectors of the protection circuit module are placed outside the battery housing, with only a portion of the circuit board located inside the housing and electrically connected to the battery cell, and the connectors electrically connected to the main board.
Without increasing the battery's overall size, this increases the internal space of the battery, allowing for larger battery cells, thereby improving battery capacity and the battery life of electronic devices.
Smart Images
Figure CN223665506U_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] With the wide use of portable electronic devices such as mobile phones in people's daily life, in order to meet the needs of users for long time use, the battery capacity of mobile phone terminals is increasing. Since the portable electronic devices such as mobile phones are designed to be light and thin, it is difficult to provide more space in the electronic device to accommodate a large battery.
[0003] In the related art, the battery is electrically connected with the mainboard through a protection circuit board, and the protection circuit board occupies a large space, affecting the volume of the battery that can be arranged. CONTENT OF THE UTILITY MODEL
[0004] In view of this, the present disclosure provides a battery module and an electronic device, which can reduce the space occupied by the protection circuit board.
[0005] Specifically, the technical scheme comprises 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 battery body comprises a battery cell and a shell, and the shell is wrapped outside the battery cell.
[0008] The protection circuit module comprises a protection device, a connector and a circuit board, the circuit board is electrically connected with the battery cell, the protection device, the connector and part of the circuit board are located outside the shell, and the protection device and the connector are electrically connected with the circuit board, and the connector is used for electrically connecting with the mainboard.
[0009] Optionally, the circuit board comprises a rigid circuit board and a flexible circuit board, the protection device and the connector are electrically connected with the rigid circuit board respectively, and the flexible circuit board is electrically connected with the rigid circuit board and the battery cell respectively.
[0010] Optionally, the connector is located on a first surface of the rigid circuit board, the protection device is located on a second surface of the rigid circuit board, and / or the protection device is embedded in the rigid circuit board, and the first surface is opposite to the second surface.
[0011] Optionally, the rigid circuit board is arranged in a stack with the mainboard, and a first surface of the rigid circuit board is opposite to the mainboard.
[0012] Optionally, the protection device comprises a chip and a resistance-capacitance device, the chip is embedded in the rigid circuit board, and the resistance-capacitance device is located on a second surface of the rigid circuit board.
[0013] Optionally, the second surface of the rigid circuit board is provided with a gel body, and the gel body is used for packaging the capacitor-resistor device.
[0014] Optionally, the battery cell has a tab, the tab is located on the side of the battery cell close to the main board, part of the flexible circuit board is located in the shell, and the flexible circuit board is electrically connected with the tab.
[0015] Optionally, the protection circuit module further comprises a reinforcing plate, one surface of the reinforcing plate is connected with the part of the flexible circuit board located in the shell.
[0016] Optionally, the part of the flexible circuit board located in the shell is located between the reinforcing plate and the battery cell, and the thickness direction of the part of the flexible circuit board located in the shell and the reinforcing plate is perpendicular to the side of the battery cell close to the main board.
[0017] Optionally, the part of the flexible circuit board located in the shell is provided with a current detection resistor.
[0018] In a second aspect, the embodiments of the present disclosure provide an electronic device comprising the battery module in any of 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 protection device and the connector of the protection circuit module are arranged outside the shell of the battery body, and the protection device and the connector no longer occupy the space inside the shell. Without increasing the volume of the battery body, the space inside the shell can be used to arrange the battery cell, and the battery cell with a larger volume can increase the power of the battery body, which is beneficial to increase the endurance time of the electronic device. 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. 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 creative labor.
[0022] Figure 1 A partial schematic view of an electronic device provided by the related art;
[0023] Figure 2 A schematic view of a battery module provided by the embodiments of the present disclosure;
[0024] Figure 3A partial side view schematic diagram of a battery module is provided for the embodiments of the present disclosure.
[0025] Figure 4 A partial top view schematic diagram of a battery module is provided for the embodiments of the present disclosure.
[0026] The reference signs in the drawings represent the following:
[0027] 1 - protection circuit module; 2 - battery body; 3 - main board;
[0028] 11 - protection device; 12 - connector; 13 - circuit board; 14 - reinforcing plate; 15 - current detection resistor; 21 - cell; 22 - shell;
[0029] 131 - hard circuit board; 132 - flexible circuit board; 111 - chip; 112 - resistor-capacitor device; 133 - glue; 211 - tab;
[0030] 001 - device main board; 002 - protection circuit board; 003 - battery assembly; 004 - battery compartment.
[0031] The above drawings have shown the specific embodiments of the present disclosure, which will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.
[0033] Figure 1 A partial schematic diagram of an electronic device is provided for the related art, as shown in the figure, the electronic device includes a device main board 001, a protection circuit board 002 and a battery assembly 003, wherein the main part of the protection circuit board 002 is located inside the battery compartment 004 of the battery assembly 003, the rest of the protection circuit board 002 is located outside the battery compartment 004, for electrically connecting the protection circuit board 002 with the device main board 001. The main part of the protection circuit board 002 located inside the battery compartment 004 will occupy a large space, affecting the capacity of the battery assembly 003. Figure 1
[0034] In view of this, the embodiments of the present disclosure provide a battery module and an electronic device, which can reduce the space occupied by the protection circuit board. Figure 2 A schematic diagram of a battery module is provided for the embodiments of the present disclosure. As shown in Figure 2 The battery module includes a protection circuit module 1 and a battery body 2, the battery body 2 includes a battery cell 21 and a shell 22, and the shell 22 is wrapped outside the battery cell 21. Figure 3 A partial side view schematic diagram of a battery module is provided for the embodiments of the present disclosure. As shown in Figures 2-3 The protection circuit module 1 includes a protection device 11, a connector 12 and a circuit board 13, the circuit board 13 is electrically connected with the battery cell 21, the protection device 11, the connector 12 and part of the circuit board 13 are located outside the shell 22, and the protection device 11 and the connector 12 are electrically connected with the circuit board 13, and the connector 12 is used to be electrically connected with a main board 3.
[0035] In the battery module provided by the embodiments of the present disclosure, the protection device 11 and the connector 12 of the protection circuit module 1 are arranged outside the shell 22 of the battery body 2, and the protection device 11 and the connector 12 no longer occupy the space inside the shell 22. Without increasing the volume of the battery body 2, the shell 22 can provide more space inside to arrange the battery cell 21, and the battery cell 21 with larger volume can increase the power of the battery body 2, which is beneficial to increase the endurance time of the electronic device.
[0036] 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.
[0037] As shown in Figures 2-3 The battery module includes a protection circuit module 1 and a battery body 2, the battery body 2 includes a battery cell 21 and a shell 22, and the shell 22 is wrapped outside the battery cell 21, the protection circuit module 1 includes a protection device 11, a connector 12 and a circuit board 13, part of the circuit board 13 is located inside the shell 22, and this part of the circuit board 13 is used to be electrically connected with the battery cell 21, the protection device 11, the connector 12 and another part of the circuit board 13 are located outside the shell 22, and the protection device 11 and the connector 12 are electrically connected with the circuit board 13, and the connector 12 is electrically connected with the joint of the main board 3 arranged in a matching manner. For example, the connector 12 is a male head, the main board 3 is provided with a female seat, and the connector 12 is detachably connected with the female seat.
[0038] In some embodiments of the present disclosure, as Figure 2As shown, the battery cell 21 has the tabs 211 on the side of the battery cell 21 close to the main board 3, the part of the flexible circuit board 132 is located in the shell 22, and the flexible circuit board 132 is electrically connected with the tabs 211. As an example, the battery cell 21 has two tabs 211, which are positive and negative respectively, and the tabs 211 are connected with the flexible circuit board 132 through nickel sheets, so as to supply power to the main board 3 through the protection circuit module 1. The shell 22 can be 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 shell 22 has a notch structure to improve the capacity of the shell 22, so that a battery cell 21 with larger volume can be accommodated.
[0039] Optionally, as shown in Figure 2 , the part of the flexible circuit board 132 located in the shell 22 is provided with a current detection resistor 15. The current detection resistor 15 is located between the two tabs 211 and the connection between the flexible circuit board 132, for detecting the current passing through the flexible circuit board 132.
[0040] In some embodiments of the present disclosure, referring to Figure 2 , the protection circuit module 1 further comprises a reinforcing plate 14, one side of the reinforcing plate 14 is connected with the part of the flexible circuit board 132 located in the shell 22. The reinforcing plate 14 can be a metal plate, such as a steel sheet, and the reinforcing plate 14 is bonded to the side of the flexible circuit board 132 away from the battery cell 21, so as to support the flexible circuit board 132 and prevent the flexible circuit board 132 from deforming.
[0041] Specifically, referring to Figure 2 , the part of the flexible circuit board 132 located in the shell 22 is located between the reinforcing plate 14 and the battery cell 21, and the thickness direction of the part of the flexible circuit board 132 located in the shell 22 and the reinforcing plate 14 is perpendicular to the side of the battery cell 21 close to the main board 3. The part of the flexible circuit board 132 located in the shell 22 and the reinforcing plate 14 are arranged vertically, which can further reduce the space occupied by the part of the flexible circuit board 132 located in the shell 22 and the reinforcing plate 14, so that there is more space inside the shell 22 to arrange the battery cell 21.
[0042] In some embodiments of the present disclosure, as Figures 2-3As shown, the circuit board 13 includes a rigid circuit board 131 and a flexible circuit board 132, the protector 11 and the connector 12 are electrically connected with the rigid circuit board 131, and the flexible circuit board 132 is electrically connected with the rigid circuit board 131 and the battery cell 21 respectively. The protector 11 forms a protection circuit in the rigid circuit board 131, which is used to disconnect the battery body 2 when the battery module is over-temperature, over-charged or over-discharged, thereby protecting the battery module. The protector 11, the connector 12 and the rigid circuit board 131 are located outside the shell 22, and only part of the flexible circuit board 132 is located inside the shell 22, thereby reducing the space occupied by the protected circuit module 1 inside the shell 22 and increasing the volume of the battery cell 21 that can be accommodated.
[0043] Optionally, as shown in Figure 3 , the connector 12 is located on the first surface of the rigid circuit board 131, the protector 11 is located on the second surface of the rigid circuit board 131, and / or the protector 11 is embedded in the rigid circuit board 131, and the first surface is opposite to the second surface. For example, part of the protector 11 is embedded in the rigid circuit board 131, and the other part of the protector 11 is arranged on the second surface of the rigid circuit board 131. In the embodiment of the present disclosure, the connector 12 and the protector 11 are arranged on the rigid circuit board 131, rather than arranged inside the shell 22, which is beneficial to reduce the occupation of the internal space of the shell 22.
[0044] In some embodiments of the present disclosure, as shown in Figure 3 , the rigid circuit board 131 is arranged in layers with the main board 3, and the first surface of the rigid circuit board 131 is opposite to the main board 3. Specifically, the orthogonal projection of the rigid circuit board 131 on the main board 3 is located in the main board 3, the connector 12 is directly connected with the main board 3, and the connector 12 is welded with the first surface of the rigid circuit board 131. The layered arrangement of the main board 3 and the rigid circuit board 131 can reduce the occupation space of the rigid circuit board 131, so that the main board 3 and the protection circuit module 1 can be arranged more compactly.
[0045] In some embodiments of the present disclosure, referring to Figure 3 , the protector 11 includes a chip 111 and a resistance-capacitance device 112, the chip 111 is embedded in the rigid circuit board 131, and the resistance-capacitance device 112 is located on the second surface of the rigid circuit board 131. It should be noted that the resistance-capacitance device 112 refers to a plurality of capacitor devices and a plurality of resistor devices, and the resistance-capacitance device 112 can be welded with the second surface of the rigid circuit board 131.
[0046] In some embodiments of the present disclosure, referring to Figure 3The second surface of the rigid circuit board 131 is provided with a glue body 133, which is used to encapsulate the blocking and capacitive device 112. The glue body 133 is injection molding glue, which is injection molded to the second surface of the rigid circuit board 131 by a SIP (system in a package) process to encapsulate the blocking and capacitive device 112, thereby providing protection for the blocking and capacitive device 112.
[0047] Figure 4 A partial top view of a battery module is provided for the embodiments of the present disclosure. In some embodiments of the present disclosure, as shown in FIG. 1, the flexible circuit board 132 is connected to one side of the rigid circuit board 131 outside the shell 22, and the flexible circuit board 132 can be bent multiple times to extend into the shell 22. Figure 4
[0048] In addition, the present disclosure also provides an electronic device comprising 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, and other names. In the electronic device, the protection device 11 and the connector 12 of the protection circuit module 1 are arranged outside the shell 22 of the battery body 2, and the protection device 11 and the connector 12 no longer occupy the space inside the shell 22. Without increasing the volume of the battery body 2, the shell 22 can provide more space to arrange the battery cell 21, and the larger volume of the battery cell 21 can increase the capacity of the battery body 2, which is beneficial to increase the endurance time of the electronic device.
[0049] 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 relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.
[0050] In the description of the disclosure, it is necessary to explain that the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection; it can be direct connection, or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the disclosure can be understood according to the specific circumstances.
[0051] In the present disclosure, unless otherwise explicitly specified and limited, "on" or "under" 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, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0052] In the description of the present disclosure, it is necessary to understand that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.
[0053] In the description of the present disclosure, the description of 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.
[0054] 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 battery body (2) comprises an electric core (21) and a shell (22), and the shell (22) is wrapped outside the electric core (21); The protection circuit module (1) comprises a protection device (11), a connector (12) and a circuit board (13), the circuit board (13) is electrically connected with the electric core (21), the protection device (11), the connector (12) and part of the circuit board (13) are located outside the shell (22), and the protection device (11) and the connector (12) are electrically connected with the circuit board (13), and the connector (12) is used for electrically connecting with a main board (3).
2. The battery module of claim 1, wherein, The circuit board (13) comprises a rigid circuit board (131) and a flexible circuit board (132), the protection device (11) and the connector (12) are electrically connected with the rigid circuit board (131) respectively, and the flexible circuit board (132) is electrically connected with the rigid circuit board (131) and the electric core (21) respectively.
3. The battery module of claim 2, wherein, The connector (12) is located on a first surface of the rigid circuit board (131), the protection device (11) is located on a second surface of the rigid circuit board (131), and / or the protection device (11) is embedded in the rigid circuit board (131), and the first surface is opposite to the second surface.
4. The battery module of claim 3, wherein, The rigid circuit board (131) is arranged in a stack with the main board (3), and a first surface of the rigid circuit board (131) is opposite to the main board (3).
5. The battery module of claim 3, wherein, The protection device (11) comprises a chip (111) and a resistance-capacitance device (112), the chip (111) is embedded in the rigid circuit board (131), and the resistance-capacitance device (112) is located on a second surface of the rigid circuit board (131).
6. The battery module of claim 5, wherein, A glue body (133) is arranged on the second surface of the rigid circuit board (131), and the glue body (133) is used for encapsulating the resistance-capacitance device (112).
7. The battery module of claim 2, wherein, The electric core (21) has a tab (211), the tab (211) is located on a side of the electric core (21) close to the main board (3), part of the flexible circuit board (132) is located in the shell (22), and the flexible circuit board (132) is electrically connected with the tab (211).
8. The battery module of claim 7, wherein, The protection circuit module (1) further comprises a reinforcing plate (14), one surface of the reinforcing plate (14) is connected with the part of the flexible circuit board (132) located in the shell (22).
9. The battery module of claim 8, wherein, The part of the flexible circuit board (132) located in the shell (22) is located between the reinforcing plate (14) and the electric core (21), and the thickness direction of the part of the flexible circuit board (132) located in the shell (22) and the reinforcing plate (14) is perpendicular to the side of the electric core (21) close to the main board (3).
10. The battery module of claim 7, wherein, The part of the flexible circuit board (132) located in the shell (22) is provided with a current detection resistor (15).
11. An electronic device, comprising: The battery module comprises the battery module according to any one of claims 1-10.