Battery cell support and battery

Abstract

The utility model relates to the field of brackets, in particular to a battery cell bracket and a battery. The battery cell bracket comprises a mounting frame; the mounting frame is used for accommodating the battery cell assembly and comprises a plurality of side frames, and the plurality of side frames are arranged in the circumferential direction of the battery cell assembly in a surrounding manner; the side frame is opposite to a preset side wall of the battery cell assembly, and the preset side wall is parallel to the thickness direction of the battery cell assembly; the battery cell assembly comprises a plurality of stacked battery cells; a plurality of exhaust holes distributed along a preset track are formed in the side frame; the preset track is a periodically fluctuating waveform, and the wavelength direction of the waveform is the length direction of the corresponding side frame. According to the invention, the plurality of exhaust holes are formed in the side frame along the waveform track, so that heat dissipation channels are formed in the upper part, the middle part and the lower part of the side frame, heat can be more uniformly dissipated on the upper, middle and lower surfaces of each battery cell, the heat dissipation effect of the whole battery is improved, the working temperature of the battery is effectively reduced, and the service life of the battery is prolonged; and the safety performance is improved.

Description

Technical Field

[0001] This application relates to the field of support structures, and in particular to a cell support structure and a battery. Background Technology

[0002] As laptop battery performance improves, the heat generated during charging and discharging also increases. Overheating accelerates battery aging and shortens battery life. Batteries operating in high-temperature environments for extended periods experience significantly faster performance degradation. Overheating not only affects battery life but can also raise the surface temperature of the laptop, impacting the user experience. Furthermore, overheating can pose safety hazards, such as battery swelling, leakage, or even fire, threatening user safety.

[0003] Currently, battery cooling primarily relies on laptop fans. Batteries are typically designed with a sealed structure to ensure safety and durability. This sealed structure restricts heat dissipation, making traditional air-cooling methods ineffective. In particular, the stacked arrangement of multiple battery cells results in a thicker battery, further hindering overall heat dissipation, impacting battery life and user experience, and posing potential safety hazards. Utility Model Content

[0004] The purpose of this application is to provide a cell support and battery that can improve the heat dissipation of multiple stacked cells, effectively reduce the battery operating temperature, and extend the battery life.

[0005] This application provides a battery cell support, including a mounting frame;

[0006] The mounting frame is used to accommodate a battery cell assembly. The mounting frame includes multiple side frames that surround the circumference of the battery cell assembly to form a cavity for accommodating the battery cell assembly. The side frames are opposite to a predetermined sidewall of the battery cell assembly, and the predetermined sidewall is parallel to the thickness direction of the battery cell assembly. The battery cell assembly includes multiple battery cells stacked along its own thickness direction.

[0007] The side frame has multiple vent holes, which are arranged along a preset trajectory. The preset trajectory is a periodically fluctuating waveform, and the wavelength direction of the waveform is the length direction of the corresponding side frame.

[0008] In the above technical solution, the preset trajectory is further defined as a sine wave or a triangular wave.

[0009] In the above technical solution, the mounting frame further includes a bracket;

[0010] On the tab lead-out side of the battery cell, the cavity is provided with an opening, and the bracket is located at the opening;

[0011] The bracket includes a support plate and a support protrusion. The support plate is connected to the side frame, and the support protrusion is connected to the support plate. It is used to support the protective plate connected to the electrode tab of the battery cell and to form a gap between the protective plate and the support plate.

[0012] In the above technical solution, the mounting frame is further provided with two cavities, and the two cavities are respectively located on both sides of the bracket, so that the battery cells contained in the two cavities are connected to the protection plate supported by the bracket.

[0013] In the above technical solution, the mounting frame further includes a cover plate; the cover plate is fastened to the side of the protective plate opposite to the bracket;

[0014] The cover plate is provided with a locking protrusion, and the bracket is provided with a locking interface, and the locking protrusion is locked into the locking interface.

[0015] In the above technical solution, the bracket is further provided with a first support part, which is opposite to the electrode tab of the battery cell near the bracket;

[0016] The cover plate is provided with a second support portion, which is opposite to the tab of the battery cell near the cover plate.

[0017] The above technical solution further includes a packaging shell;

[0018] The encapsulation housing includes a first encapsulation plate and a second encapsulation plate; in the direction of the stacking of the plurality of battery cells, the first encapsulation plate covers one end face of the battery cell assembly, and the second encapsulation plate covers the other end face of the battery cell assembly;

[0019] One of the first encapsulation board and the second encapsulation board is provided with a side extension, which covers the side frame and is connected to the other of the first encapsulation board and the second encapsulation board.

[0020] In the above technical solution, both the first packaging board and the second packaging board include a packaging base layer and a heat dissipation film;

[0021] The encapsulation substrate covers the battery cell assembly, and the heat dissipation film is located on the side of the encapsulation substrate away from the battery cell assembly;

[0022] The heat dissipation film includes a thermally conductive layer and a heat dissipation layer. The thermally conductive layer is connected to the encapsulation base layer, and the heat dissipation layer is located on the side of the thermally conductive layer that is away from the encapsulation base layer.

[0023] In the above technical solution, the thermally conductive layer is a graphene thermally conductive film; the heat dissipation layer is a nano heat dissipation coating.

[0024] This application also provides a battery, including the cell support described in the above-described scheme.

[0025] Compared with the prior art, the beneficial effects of this application are as follows:

[0026] The battery cell bracket provided in this application has multiple vents arranged along a waveform trajectory on the side frame, which forms heat dissipation channels in the upper, middle and lower parts of the side frame. This facilitates more even heat dissipation in each battery cell, improves the overall heat dissipation effect of the battery, effectively reduces the battery operating temperature, extends battery life, and enhances the user's comfort and safety when using the laptop.

[0027] This application also provides a battery, including the cell support and cell assembly described in the above scheme. Based on the above analysis, it is clear that the battery also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the disassembled structure of the battery cell support provided in this application;

[0030] Figure 2 A structural diagram of the installation frame provided in this application;

[0031] Figure 3 A structural schematic diagram of the side frame provided in this application;

[0032] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0033] Figure 5 This is a structural schematic diagram of the cover plate provided in this application;

[0034] Figure 6 This is a schematic diagram of the structure of the battery cell support provided in this application.

[0035] In the diagram: 101-Mounting frame; 102-Side frame; 103-Battery cell; 104-Ventilation hole; 105-Bracket; 106-Protection plate; 107-Electrical tab; 108-Support protrusion; 109-Cover plate; 110-Card slot protrusion; 111-Card interface; 112-First support part; 113-Second support part; 114-First encapsulation plate; 115-Second encapsulation plate; 116-Side extension part; 117-Bottom plate; 118-Heat dissipation opening. Detailed Implementation

[0036] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Example 1

[0040] See Figures 1 to 6As shown, the battery cell support provided in this application includes a mounting frame 101. The mounting frame 101 is used to accommodate a battery cell assembly. The mounting frame 101 includes a plurality of side frames 102. The height of the side frames 102 is adapted to the sum of the thicknesses of a plurality of battery cells 103 stacked along their own thickness direction to form a battery cell assembly. The battery cell assembly includes a plurality of preset sidewalls, which are parallel to the thickness direction of the battery cell assembly. The plurality of side frames 102 surround the circumference of the battery cell assembly, and the plurality of side frames are respectively opposite to the plurality of preset sidewalls, so that the plurality of side frames 102 surround a cavity for accommodating the plurality of stacked battery cells 103, thereby installing and fixing the plurality of stacked battery cells 103. Specifically, in the plurality of stacked battery cells 103, double-sided adhesive is provided between two adjacent battery cells 103 to connect and fix the plurality of battery cells 103 into a whole.

[0041] During battery charging and discharging, the battery cell 103 generates heat. To dissipate heat from the battery cell 103, this application provides multiple vent holes 104 on the side frame 102, thereby forming multiple heat dissipation channels in the circumference of the battery cell 103 to dissipate the heat generated by the battery cell 103. Optionally, the shape of the vent holes 104 includes, but is not limited to, circular, rectangular, rhomboid, honeycomb, triangular, and elliptical shapes.

[0042] Furthermore, multiple vents 104 are arranged along a preset trajectory; the preset trajectory is a periodically fluctuating waveform, the wavelength of which is along the length of the corresponding side frame 102. That is, the multiple vents 104 extend along the length of the side frame 102, and the arrangement of the multiple vents 104 along the waveform trajectory creates heat dissipation channels at the top, middle, and bottom of the side frame 102. For the stacked battery cells 103, each cell 103 generates heat, and heat accumulates between adjacent cells 103. This arrangement facilitates more even heat dissipation across the top, middle, and bottom of each cell 103, improving the overall battery heat dissipation effect, effectively reducing battery operating temperature, extending battery life, and enhancing user comfort and safety when using the laptop.

[0043] In this embodiment, the preset trajectory is a sine wave or a triangular wave; and the zero-crossing point of the preset trajectory is located at the center of the width of the side frame 102, and an exhaust hole 104 is provided at the zero-crossing point.

[0044] In this embodiment, during battery charging and discharging, the heat generated by the cell 103 is conducted to the side frame 102. A portion of the heat can be directly conducted to the outside through the vents 104 at the top, middle, and bottom, while the remaining heat can be gradually discharged along the wave-shaped vents 104. The preset trajectory of the sinusoidal curve structure guides fluid flow, reduces flow resistance, and thus lowers pressure drop. The preset trajectory of the sinusoidal curve design can ensure temperature uniformity and avoid the formation of localized high-temperature areas by changing the fluid flow direction. The shape of the sinusoidal curve increases the contact area between the fluid and the heat dissipation surface, further improving the heat exchange effect.

[0045] Compared with linearly distributed exhaust holes 104, for multiple stacked battery cells 103, a single row of exhaust holes 104 arranged in a straight line on the side frame 102 has the problems of small heat transfer area and large flow resistance; while a double row of exhaust holes 104 arranged in a straight line with corresponding vertical arrangement on the side frame 102 has the problems of large flow resistance and uneven heat dissipation.

[0046] In an optional embodiment, the mounting frame 101 further includes a bracket 105. An opening is provided in the cavity on the side where the tab 107 of the battery cell 103 is led out. The bracket 105 is located at the opening and is connected to the side frame 102 to support the protective plate 106 connected to the tab 107 of the battery cell 103. The side frame 102 supports and fixes the battery cell 103, and the bracket 105 supports and fixes the protective plate 106, thus ensuring a reliable connection between the tab 107 of the battery cell 103 and the protective plate 106.

[0047] Specifically, the bracket 105 includes a support plate and a support protrusion 108. The support plate is connected to the side frame 102, and the support protrusion 108 is connected to the support plate to support the protection plate 106 connected to the tab 107 of the battery cell 103, and to form a gap between the protection plate 106 and the support plate.

[0048] In this embodiment, since multiple battery cells 103 are stacked, when the tabs 107 of the multiple battery cells 103 are connected to the protection plate 106, the tabs 107 of the multiple battery cells 103 can be connected to the two sides of the protection plate 106 respectively according to the position of the battery cells 103. For Figure 1 Regarding the two layers of battery cells 103 shown, the tabs 107 of the battery cell 103 closer to the tray are connected to the back side of the protection plate 106 (the side of the protection plate 106 facing the tray), while the tabs 107 of the battery cell 103 farther from the tray are connected to the front side of the protection plate 106 (the side of the protection plate 106 away from the tray). This avoids excessive bending of the tabs 107 and improves the reliability of the connection. Therefore, this application provides a support protrusion 108 to support the protection plate 106, which can raise the protection plate 106, thereby leaving space on the back side of the protection plate 106 to accommodate the tabs 107.

[0049] Preferably, to prevent the protective plate 106 from shifting, the bracket 105 is provided with a positioning protrusion, and the protective plate 106 is correspondingly provided with a positioning opening. The positioning protrusion engages with the positioning opening to position the protective plate 106. Optionally, the bracket 105 is also provided with reinforcing ribs to increase the strength of the bracket 105.

[0050] In the optional solutions of this embodiment, such as Figure 2 As shown, the mounting frame 101 has two cavities, which are located on both sides of the bracket 105, so that the battery cell assemblies contained in the two cavities are connected to the protection plate 106 supported by the bracket 105, which can make the battery more integrated and further improve the battery capacity.

[0051] In an optional embodiment, the mounting frame 101 further includes a cover plate 109. The cover plate 109 is fastened to the side of the protective plate 106 facing away from the bracket 105, and is flush with the side frame 102, thus covering and protecting the protective plate 106. Specifically, the cover plate 109 has a locking protrusion 110, and the bracket 105 has a locking interface 111. The locking protrusion 110 engages with the locking interface 111 to reliably connect the cover plate 109 and the bracket 105, thereby fixing the protective plate 106 between the cover plate 109 and the bracket 105. Optionally, the cover plate 109 also has reinforcing ribs to increase its strength.

[0052] In an optional embodiment, the bracket 105 is provided with a first support portion 112, which is opposite to the tab 107 of the battery cell 103 near the bracket 105. The first support portion 112 can support and fix the tab 107 from the side away from the protection plate 106, so that the tab 107 is reliably connected to the protection plate 106. The cover plate 109 is provided with a second support portion 113, which is opposite to the tab 107 of the battery cell 103 near the cover plate 109. The second support portion 113 can support and fix the tab 107 from the side away from the protection plate 106, so that the tab 107 is reliably connected to the protection plate 106.

[0053] Example 2

[0054] The cell support in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0055] See Figure 1 and Figure 6As shown, in an optional embodiment, the cell support further includes a packaging shell; the packaging shell includes a first packaging plate 114 and a second packaging plate 115; in the direction in which the multiple cells 103 are stacked, the first packaging plate 114 covers one end face of the cell assembly, and the second packaging plate 115 covers the other end face of the cell assembly; one of the first packaging plate 114 and the second packaging plate 115 is provided with a side extension 116, the side extension 116 covers the side frame 102, and is connected to the other of the first packaging plate 114 and the second packaging plate 115.

[0056] In this embodiment, the side frame 102 has a bottom support plate 117 around the bottom of the cavity accommodating the battery cell assembly (on the side near the tray) to support multiple battery cells 103. Large heat dissipation openings 118 are formed in the middle of the cavity at both ends in the stacking direction of the battery cells 103 to facilitate heat dissipation. A first encapsulation plate 114 is located on the front of the battery (the side of the side frame 102 away from the tray), a second encapsulation plate 115 covers the back of the battery (the side of the side frame 102 near the tray), and a side extension 116 covers the side frame 102, thus sealing and encapsulating multiple battery cells 103. The side extension 116 covers the vent 104 to prevent leakage, thus not affecting the product appearance or the manufacturing process.

[0057] In this embodiment, in an optional configuration, both the first encapsulation plate 114 and the second encapsulation plate 115 include an encapsulation base layer and a heat dissipation film. The encapsulation base layer covers the battery cell assembly, and the heat dissipation film is located on the side of the encapsulation base layer away from the battery cell assembly. The heat dissipation film includes a thermally conductive layer and a heat dissipation layer, with the thermally conductive layer connected to the encapsulation base layer and the heat dissipation layer located on the side of the thermally conductive layer away from the encapsulation base layer. Specifically, the thermally conductive layer is a graphene thermally conductive film layer; the heat dissipation layer is a nano-heat dissipation coating.

[0058] In this embodiment, the encapsulation base layer generally consists of a substrate, a flame-retardant coating, and an adhesive layer arranged sequentially. The adhesive layer can be bonded to the battery cell assembly and the mounting frame 101. The substrate is specifically PET (polyethylene terephthalate), which has a low thermal conductivity. To improve the heat dissipation effect of the first encapsulation board 114 and the second encapsulation board 115, a heat dissipation layer is added to the substrate of the encapsulation base layer. This heat dissipation layer is a composite film, with a graphene thermal conductive film at its lower layer. Graphene has a thermal conductivity as high as 5300 W / mK, which is significantly higher than that of PET (0.19 W / mK). The graphene thermal conductive film acts as a heat equalizer, ensuring that heat is evenly conducted to the upper nano-heat dissipation coating. Due to the small molecular gaps in the nano-heat dissipation coating and the increased heat dissipation area, heat can be conducted to the outside, thereby achieving a better heat dissipation effect.

[0059] Example 3

[0060] Embodiment 3 of this application provides a battery, including the cell support and cell assembly of any of the above embodiments, and thus has all the beneficial technical effects of the cell support of any of the above embodiments, which will not be repeated here.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A battery cell support, characterized in that, Including the installation frame; The mounting frame is used to accommodate a battery cell assembly. The mounting frame includes multiple side frames that surround the circumference of the battery cell assembly to form a cavity for accommodating the battery cell assembly. The side frames are opposite to a predetermined sidewall of the battery cell assembly, and the predetermined sidewall is parallel to the thickness direction of the battery cell assembly. The battery cell assembly includes multiple battery cells stacked along its own thickness direction. The side frame has multiple vent holes, which are arranged along a preset trajectory. The preset trajectory is a periodically fluctuating waveform, and the wavelength direction of the waveform is the length direction of the corresponding side frame.

2. The cell support according to claim 1, characterized in that, The preset trajectory is a sine wave or a triangular wave.

3. The cell support according to claim 1, characterized in that, The mounting frame also includes a bracket; On the tab lead-out side of the battery cell, the cavity is provided with an opening, and the bracket is located at the opening; The bracket includes a support plate and a support protrusion. The support plate is connected to the side frame, and the support protrusion is connected to the support plate. It is used to support the protective plate connected to the electrode tab of the battery cell and to form a gap between the protective plate and the support plate.

4. The cell support according to claim 3, characterized in that, The mounting frame is provided with two cavities, and the two cavities are respectively located on both sides of the bracket, so that the battery cells contained in the two cavities are connected to the protection plate supported by the bracket.

5. The cell support according to claim 3, characterized in that, The mounting frame also includes a cover plate; the cover plate is fastened to the side of the protective plate opposite to the bracket; The cover plate is provided with a locking protrusion, and the bracket is provided with a locking interface, and the locking protrusion is locked into the locking interface.

6. The cell support according to claim 5, characterized in that, The bracket is provided with a first support portion, which is opposite to the tab of the battery cell near the bracket; The cover plate is provided with a second support portion, which is opposite to the tab of the battery cell near the cover plate.

7. The cell support according to claim 1, characterized in that, It also includes the packaging shell; The encapsulation housing includes a first encapsulation plate and a second encapsulation plate; in the direction of the stacking of the plurality of battery cells, the first encapsulation plate covers one end face of the battery cell assembly, and the second encapsulation plate covers the other end face of the battery cell assembly; One of the first encapsulation board and the second encapsulation board is provided with a side extension, which covers the side frame and is connected to the other of the first encapsulation board and the second encapsulation board.

8. The cell support according to claim 7, characterized in that, Both the first and second packaging boards include a packaging base layer and a heat dissipation film; The encapsulation substrate covers the battery cell assembly, and the heat dissipation film is located on the side of the encapsulation substrate away from the battery cell assembly; The heat dissipation film includes a thermally conductive layer and a heat dissipation layer. The thermally conductive layer is connected to the encapsulation base layer, and the heat dissipation layer is located on the side of the thermally conductive layer that is away from the encapsulation base layer.

9. The cell support according to claim 8, characterized in that, The thermally conductive layer is a graphene thermally conductive film; the heat dissipation layer is a nano heat dissipation coating.

10. A battery, characterized in that, Includes the cell support and cell assembly as described in any one of claims 1 to 9.

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