Battery module and electronic equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module and electronic equipment. The battery module comprises a frame assembly, a protection plate and a battery cell, a clamping part is arranged at the groove bottom of the accommodating groove, the accommodating groove comprises a first placing area and a second placing area, and a first positioning structure is arranged at the groove bottom of the second placing area; the protection plate is provided with a second positioning structure matched with the first positioning structure, the protection plate is arranged in the second containing area, the first positioning structure and the second positioning structure are connected in an inserted mode, and the clamping part is used for limiting the position of the protection plate; the battery cell comprises a battery cell main body and a polar end, the polar end is connected with the battery cell main body, the battery cell main body is placed in the first placement area, and the polar end is connected with the protection plate. The first positioning structure and the second positioning structure are mutually inserted, and the clamping part is used for limiting the position of the protection plate; therefore, the protection plate can be stably fixed in the frame assembly, and the protection plate does not deviate or warp, so that the overall performance and stability of the battery module can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module and an electronic device. Background Art

[0002] At present, with the rapid development of the electronic product market, smart electronic products have been widely used in daily life, such as smart phones, digital cameras, electronic bracelets, robots, tablet computers, notebooks, etc. As people's material and cultural living standards continue to improve, people's requirements for the performance of electronic products (such as standby time, etc.) are getting higher and higher. Among them, one of the main factors that determine the standby time of electronic products is the overall performance and stability of the battery.

[0003] In the battery industry, batteries are composed of materials such as battery cells, circuit boards, frames, insulating auxiliary materials, terminal wires, and protective plates. In the related art, the protective plate is fixed in the frame by electric welding, and the welding position of the protective plate may be disconnected, resulting in problems such as the displacement and warping of the protective plate, which is not conducive to the overall performance and stability of the battery. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a battery module and an electronic device, wherein the battery module has strong overall performance and stability.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the first aspect of the embodiment of the present application is: a battery module, including a frame assembly, a protection plate and a battery cell.

[0006] The frame assembly is provided with a receiving groove, the bottom of the receiving groove is provided with a clamping portion, and the receiving groove includes a first placement area and a second placement area, the bottom of the second placement area is provided with a first positioning structure; the protection plate has a second positioning structure adapted to the first positioning structure, the protection plate is arranged in the second placement area, and the first positioning structure and the second positioning structure are plugged into each other, and the clamping portion is used to limit the position of the protection plate; the battery cell includes a battery cell body and a polarity end, the polarity end is connected to the battery cell body, the battery cell body is placed in the first placement area, and the polarity end is connected to the protection plate.

[0007] The battery module provided by the present application has the following beneficial effects: since the first positioning structure is provided on the bottom of the second placement area; the protective plate has a second positioning structure adapted to the first positioning structure, the protective plate is provided in the second placement area, and the first positioning structure and the second positioning structure are plugged into each other, and the clamping part is used to limit the position of the protective plate; therefore, the protective plate can be stably fixed in the frame assembly, and the protective plate will not be offset or warped, thereby improving the overall performance and stability of the battery module. And since the bottom of the receiving groove is provided with a clamping part, the clamping part divides the receiving groove into the first placement area and the second placement area, the protective plate is provided in the second placement area, and the battery body is placed in the first placement area; therefore, the protective plate and the battery body can be separated, and the protective plate and the battery body will not overlap, there will be no gap between the battery and the bottom of the groove of the first placement area, and there will be no gap between the protective plate and the bottom of the groove of the second placement area, so that the battery and the protective plate are more stably fixed on the frame assembly, thereby further improving the overall performance and stability of the battery module.

[0008] In some embodiments, the clamping portion includes a first limiting portion and a second limiting portion connected to each other, the end of the first limiting portion away from the second limiting portion is connected to the bottom of the accommodating groove, and in the depth direction of the accommodating groove, the second limiting portion is located on the side of the protective plate away from the bottom of the accommodating groove.

[0009] In some embodiments, a avoidance groove is provided on the protection plate, and the avoidance groove is used to accommodate the first limiting portion.

[0010] In some embodiments, the frame assembly includes a frame and a base plate, the base plate is connected to the frame, and the base plate and the frame are enclosed to form the accommodating groove, the clamping portion is connected to the base plate, and the first positioning structure is disposed on the base plate.

[0011] In some embodiments, the base plate includes a first support portion and a second support portion that are interconnected, and in the orientation direction of the notch of the accommodating groove, the first support portion protrudes from the second support portion, the first support portion is used to support the protective plate, and the first positioning structure is provided on the first support portion, and the second support portion is used to support the battery cell body.

[0012] In some embodiments, the polarity end is located between the protection plate and the first support portion.

[0013] In some embodiments, a heat dissipation hole communicating with the first placement area is formed on the second supporting portion.

[0014] In some embodiments, the frame assembly further includes a partition plate, which is connected to the bottom plate and divides the first placement area into a plurality of battery cell cavities. There are a plurality of battery cells, and one battery cell is placed in each of the battery cell cavities.

[0015] In some embodiments, the first positioning structure is a positioning pin, and the second positioning structure is a positioning hole adapted to the positioning pin;

[0016] Alternatively, the first positioning structure is a positioning hole, and the second positioning structure is a positioning pin matched with the positioning hole.

[0017] In order to achieve the above-mentioned purpose, the technical solution adopted in the second embodiment of the present application is: an electronic device, comprising the battery module of the above-mentioned first embodiment.

[0018] The beneficial effect of the electronic device provided by the present application is that by applying the battery module of the first embodiment described above to the electronic device, the performance of the electronic device (such as standby time, etc.) can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of the structure of a battery module in one of the embodiments of the present application;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of the frame assembly, protection plate and battery cell in the battery module shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of the frame assembly and the protection plate in the battery module shown;

[0023] Figure 4 yes Figure 3 A schematic diagram of the structure of the protection board in the battery module shown;

[0024] Figure 5 yes Figure 3 A schematic structural diagram of the frame assembly, protection plate and some cells in the battery module from another perspective;

[0025] Figure 6 yes Figure 5 A partial enlarged view of the A part shown;

[0026] Figure 7 yes Figure 1 A schematic diagram of the structure of the frame assembly in the battery module shown;

[0027] Figure 8 It is a partial enlarged view of the B portion shown in 7;

[0028] Fig. 9 yes Figure 1 An exploded view of the battery module is shown.

[0029] Reference numerals:

[0030] 1. frame assembly; 11. frame; 12. bottom plate; 121. first support portion; 122. second support portion; 1221. heat dissipation hole; 13. first placement area; 14. second placement area; 15. first positioning structure; 16. partition plate;

[0031] 2. protection plate; 21. second positioning structure; 22. avoidance groove;

[0032] 3. Battery cells;

[0033] 4. Clamping portion; 41. First limiting portion; 42. Second limiting portion; 421. Guide slope;

[0034] 5. Sticker; 6. Cover plate; 7. Terminal wire. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0039] At present, with the rapid development of the electronic product market, smart electronic products have been widely used in daily life, such as smart phones, digital cameras, electronic bracelets, robots, tablet computers, notebooks, etc. As people's material and cultural living standards continue to improve, people's requirements for the performance of electronic products (such as standby time, etc.) are getting higher and higher. Among them, one of the main factors that determine the standby time of electronic products is the overall performance and stability of the battery.

[0040] In the battery industry, batteries are composed of materials such as battery cells, circuit boards, frames, insulating auxiliary materials, terminal wires, and protective plates. In the related art, the protective plate is fixed in the frame by electric welding, and the welding position of the protective plate may be disconnected, resulting in problems such as the displacement and warping of the protective plate, which is not conducive to the overall performance and stability of the battery.

[0041] In view of the above problems, the embodiments of the present application provide a battery module and an electronic device, wherein the battery module has strong overall performance and stability.

[0042] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0043] Please refer to Figure 1 , Figure 7 and Figure 8 An embodiment of the present application provides a battery module, including a frame assembly 1, a protection plate 2 and a battery cell 3.

[0044] The frame assembly 1 is provided with a receiving groove, a clamping portion 4 is provided at the bottom of the receiving groove, and the receiving groove includes a first placement area 13 and a second placement area 14, and a first positioning structure 15 is provided at the bottom of the second placement area 14; the protection plate 2 has a second positioning structure 21 adapted to the first positioning structure 15, the protection plate 2 is arranged in the second placement area 14, and the first positioning structure 15 and the second positioning structure 21 are plugged into each other, and the clamping portion 4 is used to limit the position of the protection plate 2; the battery cell 3 includes a battery cell body and a polarity end, the polarity end is connected to the battery cell body, the battery cell body is placed in the first placement area 13, and the polarity end is connected to the protection plate 2.

[0045] In the battery module provided in the present application, since a first positioning structure 15 is provided on the bottom of the groove of the second placement area 14; the protective plate 2 has a second positioning structure 21 adapted to the first positioning structure 15, the protective plate 2 is arranged in the second placement area 14, and the first positioning structure 15 and the second positioning structure 21 are plugged into each other, and the clamping portion 4 is used to limit the position of the protective plate 2; therefore, the protective plate 2 can be stably fixed in the frame assembly 1, and the protective plate 2 will not be displaced or warped, thereby improving the overall performance and stability of the battery module. And because a clamping portion 4 is provided at the bottom of the accommodating groove, the clamping portion 4 divides the accommodating groove into a first placement area 13 and a second placement area 14, the protection plate 2 is provided in the second placement area 14, and the battery cell body is placed in the first placement area 13; therefore, the protection plate 2 and the battery cell body can be separated, and the protection plate 2 and the battery cell body will not overlap, there will be no gap between the battery cell 3 and the bottom of the first placement area 13, and there will be no gap between the protection plate 2 and the bottom of the second placement area 14, so that the battery cell 3 and the protection plate 2 are more stably fixed on the frame assembly 1, thereby further improving the overall performance and stability of the battery module.

[0046] Please refer to Figure 4 It should be noted that the mutual insertion of the first positioning structure 15 and the second positioning structure 21 can prevent the protection plate 2 from moving relative to the bottom of the groove of the second placement area 14, so as to prevent the protection plate 2 from being displaced; the clamping portion 4 is used to prevent the protection plate 2 from moving in the depth direction of the second placement area 14, so as to prevent the protection plate 2 from warping and preventing the protection plate 2 from detaching from the second placement area 14, so that the protection plate 2 is stably fixed in the frame assembly 1.

[0047] Specifically, at least part of the holding portion 4 is located on a side of the groove bottom of the protection plate 2 away from the second placement area 14 , and the holding portion 4 can hold the protection plate 2 so that the protection plate 2 will not fall off from the second placement area 14 .

[0048] Specifically, there are at least two first positioning structures 15 , which are spaced apart in the length direction of the protection plate 2 , the number of the second positioning structures 21 is equal to that of the first positioning structures 15 , and the positions of the second positioning structures 21 correspond to those of the first positioning structures 15 .

[0049] Through the above arrangement, not only can the protection plate 2 be prevented from rotating relative to the first positioning structure 15, but also the force points on the protection plate 2 can be increased to prevent the protection plate 2 from warping.

[0050] It should be noted that the protection board 2 is a circuit board that plays a protective role and has four major functions: overcharge protection, over-discharge protection, overcurrent protection, and reverse connection protection. The protection board 2 is mainly composed of electronic circuits. In an environment of -40°C to +85°C, the protection board 2 can always accurately monitor the voltage of the battery cell 3 and the current of the charge and discharge circuit, and timely control the on and off of the charge and discharge circuit.

[0051] The ordinary lithium battery protection board 2 usually includes a control IC (Integrated Circuit), a MOS (Metal Oxide Semiconductor) switch, a resistor, a capacitor and some auxiliary devices. Among them, under normal circumstances, the control IC controls the MOS switch to connect the battery cell 3 to the external circuit, and when the battery cell 3 voltage or the charge and discharge loop current exceeds the specified value, it immediately controls the MOS switch to turn off to protect the safety of the battery cell 3.

[0052] Please refer to Figure 2 , Figure 3 and Figure 4 Specifically, the battery cell body is placed in the first placement area 13, and the protection plate 2 is placed in the second placement area 14. The battery cell body and the protection plate 2 are distributed in sequence. On the one hand, the protection plate 2 and the battery cell body will not overlap, and the protection plate 2 will not occupy the space for placing the battery cell body, which can improve the space utilization of the first placement area 13, thereby increasing the area of ​​the battery cell 3 and the capacity of the battery; on the other hand, it can also improve the utilization of the space in the accommodating slot.

[0053] Please refer to Figure 7 and Figure 8 In some embodiments, the clamping portion 4 includes a first limiting portion 41 and a second limiting portion 42 connected to each other, and the end of the first limiting portion 41 away from the second limiting portion 42 is connected to the bottom of the receiving groove, and in the depth direction of the receiving groove, the second limiting portion 42 is located on the side of the protective plate 2 away from the bottom of the receiving groove.

[0054] Through the above-mentioned arrangement, the first limiting portion 41 is used to divide the space in the receiving groove into a first placement area 13 and a second placement area 14, and the second limiting portion 42 is located on the side of the protective plate 2 away from the bottom of the receiving groove, which can prevent the protective plate 2 from detaching from the receiving groove, thereby limiting the position of the protective plate 2 to prevent the protective plate 2 from warping.

[0055] Please refer to Figure 7 and Figure 8It should be noted that when assembling the battery module of the first embodiment of the present application, the protective plate 2 is first pushed so that the protective plate 2 can squeeze the clamping portion 4, so that the clamping portion 4 moves in a direction away from the second placement area 14, so that the protective plate 2 can pass through the second limiting portion 42 and move between the second limiting portion 42 and the bottom of the accommodating groove; after the squeezing force is lost, the second limiting portion 42 moves again to the side of the protective plate 2 away from the bottom of the accommodating groove; the protective plate 2 is continued to be moved so that the second positioning structure 21 on the protective plate 2 is plugged into the first positioning structure 15 to fix the protective plate 2 on the frame assembly 1.

[0056] Please refer to Figure 5 and Figure 6 In some embodiments, a guiding inclined surface 421 is further provided on the second limiting portion 42 , and the guiding inclined surface 421 is inclined from the end away from the first limiting portion 41 toward the bottom of the accommodating groove.

[0057] Through the above arrangement, when the protection plate 2 is moved between the second limiting portion 42 and the bottom of the accommodating groove, the guiding inclined surface 421 plays a guiding role.

[0058] Please refer to Figure 3 and Figure 4 In some embodiments, a avoiding groove 22 is provided on the protection plate 2 , and the avoiding groove 22 is used to accommodate the first limiting portion 41 .

[0059] Through the above arrangement, the space occupied by the clamping portion 4 and the protection plate 2 can be reduced to improve the space utilization of the accommodating slot.

[0060] In some embodiments, the first positioning structure 15 is a positioning pin, and the second positioning structure 21 is a positioning hole matched with the positioning pin; or the first positioning structure 15 is a positioning hole, and the second positioning structure 21 is a positioning pin matched with the positioning hole.

[0061] In some embodiments, the frame assembly 1 includes a frame 11 and a base plate 12 , the base plate 12 is connected to the frame 11 , and the base plate 12 and the frame 11 are enclosed to form a receiving groove, the clamping portion 4 is connected to the base plate 12 , and the first positioning structure 15 is disposed on the base plate 12 .

[0062] Please refer to Figure 4 Specifically, the frame 11 includes four plates, which are connected end to end in sequence so that the frame 11 encloses a through slot with openings at both ends. The bottom plate 12 is connected to the frame 11, and the bottom plate 12 covers an opening at one end of the through slot, so that the bottom plate 12 and the frame 11 enclose a receiving slot, and the other end of the through slot is opened to form a notch of the receiving slot.

[0063] Please refer to Figure 4In some embodiments, the bottom plate 12 includes a first support portion 121 and a second support portion 122 connected to each other. In the direction of the notch of the accommodating groove, the first support portion 121 protrudes from the second support portion 122. The first support portion 121 is used to support the protective plate 2, and the first positioning structure 15 is provided on the first support portion 121. The second support portion 122 is used to support the battery cell body.

[0064] Through the above arrangement, the frame 11, the first support portion 121 and the second support portion 122 enclose a groove-shaped first placement area 13, and the battery cell 3 is placed in the groove-shaped first placement area 13 to limit the position of the battery cell 3 so that the battery cell 3 can be more stably fixed in the frame assembly 1.

[0065] In some embodiments, the polarity end is located between the protection plate 2 and the first support portion 121 .

[0066] Through the above arrangement, the polarity end is confined between the protection plate 2 and the bottom plate 12 , so that the battery cell 3 can be more stably fixed in the frame assembly 1 .

[0067] It should be noted that the battery cell 3 generates heat during charging and discharging, which increases the temperature of the battery cell 3 . If the battery cell 3 can be cooled in time, the utilization rate of the power of the battery cell 3 can be improved, and the service life of the battery cell 3 can also be extended.

[0068] In some embodiments, a heat dissipation hole 1221 communicating with the first placement area 13 is defined on the second support portion 122 .

[0069] Through the above arrangement, the surface of the battery cell 3 placed in the first placement area 13 is exposed, so as to facilitate the heat dissipation of the battery cell 3 and help cool the battery cell 3 .

[0070] In some embodiments, the frame assembly 1 further includes a partition plate 16, which is connected to the bottom plate 12, and the partition plate 16 divides the first placement area 13 into a plurality of battery cell cavities, and a plurality of battery cells 3 are provided, and a battery cell 3 is placed in each battery cell cavity.

[0071] Through the above arrangement, the first placement area 13 can be divided into a plurality of battery cell cavities, so that a plurality of battery cells 3 can be placed in the frame assembly 1, thereby increasing the capacity of the battery module and prolonging the standby time of the electronic device including the battery module of the present application.

[0072] It should be noted that in the battery module in the above embodiment, both sides of the battery cell 3 are exposed on the outside, so that the battery cell 3 is not only easy to be separated from the receiving groove, but also easy to be rubbed.

[0073] Please refer to Figure 1 and Fig. 9The battery module of the first aspect embodiment of the present application also includes a bottom sticker 5 and a cover plate 6; the bottom sticker 5 and the cover plate 6 are respectively located on opposite sides of the frame 11, and the bottom sticker 5 is attached to the bottom plate 12, the bottom sticker 5 covers the bottom plate 12 and the battery cell 3, the cover plate 6 is connected to the frame 11, and the cover plate 6 covers the battery cell 3.

[0074] Through the above arrangement, not only the battery core 3 can be protected, but also the heat dissipation of the battery core 3 is not affected.

[0075] Please refer to Figure 1 and Fig. 9 In some embodiments, the battery module of the first aspect of the present application further includes a terminal wire 7, which is electrically connected to the protection board 2, and the terminal wire 7 is used for electrical connection to an external power supply device or an external load.

[0076] In order to achieve the above-mentioned purpose, the technical solution adopted in the second embodiment of the present application is: an electronic device, comprising the battery module of the above-mentioned first embodiment.

[0077] By applying the battery module of the first embodiment to electronic devices, the performance of the electronic devices (such as standby time, etc.) can be improved.

[0078] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A battery module, characterized in that: include: The frame assembly is provided with a receiving groove, the groove bottom of the receiving groove is provided with a clamping portion, and the receiving groove includes a first placement area and a second placement area, and the groove bottom of the second placement area is provided with a first positioning structure; A protection plate having a second positioning structure adapted to the first positioning structure, the protection plate is arranged in the second placement area, and the first positioning structure and the second positioning structure are plugged into each other, and the clamping portion is used to limit the position of the protection plate; A battery cell, wherein the battery cell comprises a battery cell body and a polarity end, wherein the polarity end is connected to the battery cell body, the battery cell body is placed in the first placement area, and the polarity end is connected to the protection plate.

2. The battery module according to claim 1, characterized in that: The clamping portion includes a first limiting portion and a second limiting portion connected to each other, wherein the end of the first limiting portion away from the second limiting portion is connected to the bottom of the receiving groove, and in the depth direction of the receiving groove, the second limiting portion is located on the side of the protective plate away from the bottom of the receiving groove.

3. The battery module according to claim 2, characterized in that: The protection plate is provided with a avoiding groove, and the avoiding groove is used to accommodate the first limiting part.

4. The battery module according to claim 1, characterized in that: The frame assembly includes a frame and a bottom plate, the bottom plate is connected to the frame, and the bottom plate and the frame are enclosed to form the accommodating groove, the clamping portion is connected to the bottom plate, and the first positioning structure is arranged on the bottom plate.

5. The battery module according to claim 4, characterized in that: The bottom plate includes a first supporting portion and a second supporting portion that are connected to each other. In the orientation direction of the notch of the accommodating groove, the first supporting portion protrudes from the second supporting portion. The first supporting portion is used to support the protective plate, and the first positioning structure is provided on the first supporting portion. The second supporting portion is used to support the battery cell body.

6. The battery module according to claim 5, characterized in that: The polarity end is located between the protection plate and the first support portion.

7. The battery module according to claim 5, characterized in that: The second supporting portion is provided with a heat dissipation hole connected with the first placement area.

8. The battery module according to claim 4, characterized in that: The frame assembly further includes a partition plate, which is connected to the bottom plate and divides the first placement area into a plurality of battery cell cavities. A plurality of battery cells are provided, and one battery cell is placed in each of the battery cell cavities.

9. The battery module according to any one of claims 1 to 8, characterized in that: The first positioning structure is a positioning pin, and the second positioning structure is a positioning hole adapted to the positioning pin; Alternatively, the first positioning structure is a positioning hole, and the second positioning structure is a positioning pin matched with the positioning hole.

10. An electronic device, characterized in that: A battery module comprising any one of claims 1 to 9.

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