electronic machinery

Abstract

An electronic apparatus according to the present disclosure is provided with: a battery; an enclosure for housing the battery therein, the enclosure having a plurality of through-holes at positions at which the battery is disposed; and, a film member that is disposed in the enclosure, closes the plurality of through-holes, and is melted by heat.

Description

[Technical Field]

[0001] The present disclosure relates to electronic devices. [Background technology]

[0002] Patent Document 1 discloses a battery module. The battery module described in Patent Document 1 includes battery cells, a module case, and a film member. The module case houses a plurality of battery cells. Inside the module case, internal cooling channels are formed on both sides of the battery cells. At least one opening facing the internal cooling channel of the module case is provided on both side surfaces of the module case. Film members are attached to both side surfaces of the module case so as to cover the at least one opening. The film member melts at a predetermined temperature or higher, thereby opening the at least one opening. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2021-502665 Summary of the Invention

[0004] An object of the present disclosure is to provide an electronic device that can improve safety.

[0005] An electronic device according to one aspect of the present disclosure includes: Battery and a housing that houses the battery therein and has a plurality of through holes at positions where the battery is disposed; a film member that is disposed on the housing, closes the plurality of through holes, and melts when heated; Equipped with.

[0006] According to the present disclosure, it is possible to provide an electronic device that can improve safety. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic perspective view of an example of an electronic device according to a first embodiment of the present disclosure. [Figure 2] 2 is a schematic perspective view showing the electronic device of FIG. 1 with the battery removed. FIG. [Figure 3] FIG. 1 is a schematic exploded perspective view of an example of a battery. [Figure 4] FIG. 2 is a schematic bottom view of the electronic device of FIG. [Figure 5] 5 is a schematic enlarged view of a Z1 portion of the electronic device in FIG. 4. [Figure 6] 6 is a schematic enlarged view of a portion Z2 of the electronic device in FIG. 5. FIG. [Figure 7] 5 is a schematic cross-sectional view of the electronic device of FIG. 4 taken along line AA. [Figure 8] FIG. 2 is a schematic partial exploded view showing an example of the arrangement of film members. [Figure 9A] 4 is a schematic diagram illustrating an example of an operation of the electronic device according to the first embodiment of the present disclosure. FIG. [Figure 9B] 4 is a schematic diagram illustrating an example of an operation of the electronic device according to the first embodiment of the present disclosure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Background to this disclosure) In the battery module described in Patent Document 1, at least one opening is provided in the module case, and the at least one opening is covered with a film member. When a high temperature condition occurs due to abnormal heat generation in a battery cell, the film member melts due to the heat and opens the at least one opening. This allows high-temperature gases and flames to be exhausted to the outside of the battery module.

[0009] However, in electronic devices that house a battery internally, the opening may be blocked by the housing of the electronic device. For example, in the case of a dustproof, waterproof, and airtight electronic device, the battery is covered by the housing of the electronic device and is not exposed to the outside of the housing. If the battery module described in Patent Document 1 is used in such an electronic device, even if the film member melts due to heat, the opening will not be exposed to the outside of the housing of the electronic device. As a result, high-temperature gases, flames, and the like cannot be discharged to the outside of the housing of the electronic device.

[0010] As such, electronic devices that house batteries internally have the problem that even if the battery module described in Patent Document 1 is used, high-temperature gases, flames, etc. cannot be exhausted to the outside of the electronic device's housing.

[0011] Therefore, in order to solve the above-mentioned problems, the inventors discovered a configuration in which a plurality of through holes are provided in the housing of an electronic device and the plurality of through holes are blocked by a film member that melts when heated, and arrived at the present disclosure.

[0012] The electronic device of the first aspect of the present disclosure comprises a battery, a housing that houses the battery and has a plurality of through holes at a position where the battery is placed, and a film member that is placed in the housing, covers the plurality of through holes, and melts when heated.

[0013] Such a configuration can improve safety.

[0014] In the electronic device according to the second aspect of the present disclosure, the plurality of through holes may have a slit shape having a longitudinal direction and a lateral direction in a plan view.

[0015] With this configuration, it is possible to improve safety while suppressing a decrease in mechanical strength.

[0016] In the electronic device of the third aspect of the present disclosure, the multiple through holes may be arranged, in a planar view, at a first interval in the longitudinal direction and at a second interval in the lateral direction that is smaller than the first interval.

[0017] Such a configuration can further improve safety.

[0018] In the electronic device according to the fourth aspect of the present disclosure, the battery may have a plurality of battery cells, and the plurality of through holes may be provided at positions that overlap the plurality of battery cells in a plan view.

[0019] With this configuration, the through-holes can be provided near the battery cells, further improving safety.

[0020] In the electronic device according to the fifth aspect of the present disclosure, the housing may have a partition outer wall that separates the plurality of through holes, and the partition outer wall may have an area larger than an opening area of ​​the through holes in a plan view.

[0021] With this configuration, it is possible to improve safety while suppressing a decrease in mechanical strength.

[0022] In the electronic device of the sixth aspect of the present disclosure, the battery may have a partition wall disposed between adjacent battery cells, and the partition wall may be disposed in a position overlapping the partition outer wall in a plan view.

[0023] Such a configuration can further improve safety.

[0024] In the electronic device according to the seventh aspect of the present disclosure, the film member may be disposed on the inside of the housing.

[0025] With this configuration, the terminal block is placed in a position where it is likely to melt due to heat from the battery cells, further improving safety.

[0026] In the electronic device according to the eighth aspect of the present disclosure, a flow path extending to the plurality of through holes may be provided between the battery and the housing.

[0027] Such a configuration can further improve safety.

[0028] In the electronic device of the ninth aspect of the present disclosure, the flow path may include a first flow path on the side where the multiple through holes are located and a second flow path on the opposite side to the side where the multiple through holes are located, and the first flow path may be smaller than the second flow path.

[0029] Such a configuration can further improve safety.

[0030] In the electronic device of the tenth aspect of the present disclosure, the battery may have a battery case that defines an outer shell of the battery, and the melting point of the film member may be lower than the melting point of the battery case.

[0031] Such a configuration can further improve safety.

[0032] In the electronic device according to the eleventh aspect of the present disclosure, the film member may have a film and / or an adhesive tape.

[0033] Such a configuration can further improve safety.

[0034] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In each drawing, elements are exaggerated for ease of explanation.

[0035] As used herein, terms such as "first," "second," etc. are used for descriptive purposes only and should not be understood as expressing or implying the relative importance or ranking of technical features. Features qualified as "first" and "second" expressly or imply the inclusion of one or more of such features.

[0036] (Embodiment 1) [Overall configuration of electronic devices] FIG. 1 is a schematic perspective view of an example of an electronic device 1 according to a first embodiment of the present disclosure. FIG. 2 is a schematic perspective view showing a state in which a battery 10 has been removed from the electronic device 1 of FIG. 1. Note that the X, Y, and Z directions in the figure respectively indicate the width, depth, and height directions of the electronic device 1. The example shown in FIG. 2 also shows a state in which the battery 10 on one side of the width direction (X direction) of the electronic device 1 has been removed. In this embodiment, a battery 10 can also be stored on the other side of the width direction (X direction) of the electronic device 1. That is, the electronic device 1 can store two batteries 10.

[0037] 1 and 2, the electronic device 1 is a notebook-type personal computer (laptop PC). The electronic device 1 includes a first housing 2 and a second housing 3. The first housing 2 and the second housing 3 each have a thin, box-like outer shell and are rectangular.

[0038] The first housing 2 houses a display unit 4. The display unit 4 is, for example, a liquid crystal display. The display surface of the display unit 4 is exposed from the first housing 2. The first housing 2 also houses a camera, an antenna, and the like.

[0039] The second housing 3 houses an input unit. The input unit is, for example, a keyboard 5 and a touchpad 6. The input unit is exposed from the second housing 3. In this specification, the keyboard 5 and the touchpad 6 may be referred to as the input units 5, 6. The second housing 3 also houses circuits such as a CPU and memory, a battery 10, and the like. In this embodiment, the battery 10 is not exposed from the second housing 3 but is housed inside the second housing 3.

[0040] Specifically, the second housing 3 has a storage section 8 that stores the battery 10. The storage section 8 encloses the battery 10 in the second housing 3. The storage section 8 holds the battery 10 inside the second housing 3 without exposing it from the second housing 3. The storage section 8 is defined by, for example, the inner wall of the second housing 3. Furthermore, the storage section 8 may include a member other than the inner wall of the second housing 3.

[0041] The storage section 8 has a lid 9 provided on a side wall of the second housing 3. By opening the lid 9, the battery 10 can be taken in and out of the storage section 8. In addition, by closing the lid 9, the inside of the storage section 8 can be separated from the outside of the second housing 3.

[0042] The first housing 2 and the second housing 3 are connected via a hinge unit 7. The hinge unit 7 rotatably connects the first housing 2 and the second housing 3. The hinge unit 7 allows the first housing 2 and / or the second housing 3 to rotate, switching the electronic device 1 between an open state and a closed state. The "open state" refers to a state in which the first housing 2 and the second housing 3 are separated, exposing the display unit 4 and the input units 5 and 6. The "closed state" refers to a state in which the first housing 2 and the second housing 3 are arranged opposite each other, the display unit 4 and the input units 5 and 6 face each other, and the display unit 4 and the input units 5 and 6 are not exposed.

[0043] The first housing 2 and the second housing 3 are made of a metal material, for example, a magnesium alloy.

[0044] [About the battery] FIG. 3 is a schematic exploded perspective view of an example of the battery 10. As shown in FIG.

[0045] As shown in FIG. 3, the battery 10 includes a battery case 11 and a plurality of battery cells 12.

[0046] The battery case 11 defines the outer periphery of the battery 10 and houses multiple battery cells 12. The battery case 11 has a first case 13 and a second case 14. The first case 13 and the second case 14 are formed in a concave shape and are connected to each other to form a space inside for housing multiple battery cells 12. In this embodiment, the first case 13 forms the bottom side of the battery case 11, and the second case 14 forms the top side of the battery case 11.

[0047] The temperature at which the battery case 11 burns is, for example, 245°C or higher and 280°C or lower. The "burning temperature" refers to the temperature at which the battery case 11 melts and deforms. For example, the "burning temperature" may be the melting point. The battery case 11 is made of, for example, a resin. Examples of resin materials that form the battery case 11 include polycarbonate.

[0048] The plurality of battery cells 12 are housed in a battery case 11. The plurality of battery cells 12 are electrically connected to one another. In this embodiment, the plurality of battery cells 12 are each a cylindrical cell.

[0049] The battery 10 also has a plurality of partition walls 15 arranged between the plurality of battery cells 12. The partition walls 15 are arranged between adjacent battery cells 12. The partition walls 15 thermally insulate the adjacent battery cells 12. The partition walls 15 have a higher melting point than the battery case 11. The melting point of the partition walls 15 is, for example, 1200°C or higher. The partition walls 15 are also made of a heat-insulating material. Specifically, the partition walls 15 are made of a material with lower thermal conductivity than the battery case 11. The partition walls 15 are made of, for example, a mica plate.

[0050] In the event of abnormal heat generation, such as the generation of flames or high-temperature gases from a battery cell 12, the partition wall 15 has a higher melting point than the battery case 11 and is therefore less likely to melt than the battery case 11. As a result, even if a flame or high-temperature gases occurs in a battery cell 12, the partition wall 15 can prevent the flame or high-temperature gases from transferring to adjacent battery cells 12. In addition, the partition wall 15 has a lower thermal conductivity than the battery case 11 and can therefore suppress heat conduction compared to the battery case 11. As a result, it is possible to prevent the heat of an abnormally hot battery cell 12 from being conducted to adjacent battery cells 12.

[0051] [Detailed structure of electronic devices] Next, the detailed structure of the part of the electronic device 1 where the battery 10 is housed will be described.

[0052] FIG. 4 is a schematic bottom view of the electronic device 1 of FIG. 1. FIG. 5 is a schematic enlarged view of the Z1 portion of the electronic device 1 of FIG. 4. FIG. 6 is a schematic enlarged view of the Z2 portion of the electronic device 1 of FIG. 5. FIG. 7 is a schematic cross-sectional view of the electronic device 1 of FIG. 4 taken along line AA. FIG. 8 is a schematic partial exploded view showing an example of the arrangement of the film member 30. The area enclosed by the dashed dotted lines in FIGS. 4 and 5 indicates the area where the storage section 8 is formed in plan view. Furthermore, "in plan view" means viewed from the height direction (Z direction) of the electronic device 1.

[0053] In this embodiment, the second housing 3 has a bottom case 20A and a top case 20B. The bottom case 20A forms the bottom side of the second housing 3, and the top case 20B forms the top side of the second housing 3. Input units such as a keyboard 5 and a touchpad 6 are disposed in the top case 20B. The bottom case 20A is disposed on the opposite side of the top case 20B.

[0054] As shown in FIGS. 4 to 8, a plurality of through holes 21 are provided in the second housing 3 of the electronic device 1. The plurality of through holes 21 are provided in the bottom case 20A. The plurality of through holes 21 are provided at positions where the battery 10 is disposed. Specifically, the plurality of through holes 21 are provided at positions that overlap with an area where the storage section 8 is formed in a plan view.

[0055] In this embodiment, two storage sections 8 are provided opposite each other in the width direction (X direction) of the second housing 3. Therefore, a plurality of through holes 21 are provided on both sides in the width direction (X direction) of the bottom case 20A, excluding the center portion. Note that the two storage sections 8 may be internally connected to each other.

[0056] The second housing 3 has partition outer walls 22 that separate the multiple through holes 21. The partition outer walls 22 are provided in the bottom case 20A, just like the multiple through holes 21. The partition outer walls 22 separate the multiple through holes 21 that are adjacent to each other in the width direction (X direction) of the second housing 3. Specifically, the partition outer walls 22 are provided in positions that overlap with areas where the battery 10 is disposed in a plan view, and are provided between the multiple through holes 21 that are adjacent to each other in the width direction (X direction) of the second housing 3. The partition outer walls 22 are formed as continuous outer walls that extend in the depth direction (Y direction) of the second housing 3. That is, the partition outer walls 22 do not have any through holes 21.

[0057] 7 and 8, the electronic device 1 has a film member 30 that is arranged on the second housing 3 so as to cover the multiple through-holes 21. The film member 30 is arranged inside the second housing 3. By covering the multiple through-holes 21, the film member 30 makes the electronic device 1 dustproof and / or waterproof. That is, the film member 30 prevents dust and water from entering the inside of the second housing 3 through the multiple through-holes 21 during normal use of the electronic device 1.

[0058] The film member 30 is made of a material that melts when heated. For example, in the event of abnormal heat generation, such as when flames or high-temperature gases are generated from the battery 10, the film member 30 melts due to the heat, thereby opening the multiple through-holes 21. This allows the flames and high-temperature gases generated from the battery 10 to be discharged to the outside of the second housing 3 through the multiple through-holes 21.

[0059] The melting point of the film member 30 is higher than the maximum housing temperature expected during normal use of the electronic device 1, and lower than the melting points of flames and high-temperature gases. For example, the melting point of the film member 30 should be 100°C or higher and 550°C or lower. The temperature at which the film member 30 burns is preferably lower than the temperature at which the battery case 11 burns.

[0060] For example, the thickness of the film member 30 is 250 μm or less, and preferably, the thickness of the film member is 50 μm.

[0061] For example, the film member 30 can be made of PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene), or the like.

[0062] In this embodiment, the film member 30 includes a PET film and an adhesive tape. The film member 30 is attached to the inside of the second housing 3 by the adhesive tape. In this embodiment, a plurality of film members 30 are arranged inside the second housing 3.

[0063] It should be noted that the film member 30 is not limited to a member made of a PET film and an adhesive tape. The film member 30 may include a film and / or an adhesive tape. For example, the film member 30 may be formed of a film without including an adhesive tape. In this case, one side of the film may be an adhesive surface. Alternatively, the film member 30 may be formed of an adhesive tape without including a film.

[0064] Next, the through-hole 21 will be described in detail.

[0065] 4 to 6, each of the plurality of through holes 21 has a slit shape having a longitudinal direction and a lateral direction in a plan view. In this embodiment, the longitudinal direction is the X direction, and the lateral direction is the Y direction.

[0066] As shown in FIG. 6, for example, the first dimension D1 of the through hole 21 in the longitudinal direction is 5 mm or more and 10 mm or less, and the second dimension D2 of the through hole 21 in the lateral direction is 0.45 mm or more and 0.9 mm or less. Preferably, the first dimension D1 is 10 mm, and the second dimension D2 is 0.9 mm. Note that the size and shape of the through hole 21 are not limited to these. The size of the through hole 21 may be at least 3 / 10 times the surface area of ​​the housing portion that houses the battery cells 12 of the battery 10, as long as the size maintains sufficient mechanical strength of the housing. Furthermore, the through hole 21 may be located at a position that overlaps with the battery cells 12 in a plan view.

[0067] The through holes 21 are arranged at a first interval P1 in the longitudinal direction and at a second interval P2 in the lateral direction in a plan view. The second interval P2 is smaller than the first interval P1. For example, the first interval P1 is 10 mm, and the second interval P2 is 1.8 mm to 3 mm, preferably 2.5 mm. The intervals between the through holes 21 are not limited to these. The first interval P1 and the second interval P2 may be at least 3 / 10 times the surface area of ​​the housing that accommodates the battery cells 12 of the battery 10 and may be any interval that maintains sufficient mechanical strength of the housing. The through holes 21 may be arranged at positions that overlap the battery cells 12 in a plan view.

[0068] The multiple through holes 21 are provided in positions that overlap with the multiple battery cells 12 of the battery 10 in a plan view. That is, the multiple through holes 21 are provided in positions that face the multiple battery cells 12 in a plan view. For example, the first spacing P1 between the multiple through holes 21 may be approximately equal to the spacing between the multiple battery cells 12. Here, "approximately" includes an error of 10% or less, and preferably includes an error of 5% or less. This allows the through holes 21 to be provided close to the battery cells 12, making it easier to exhaust flames or high-temperature gases from the through holes 21 if they occur in the battery cells 12.

[0069] In this embodiment, the plurality of through holes 21 have approximately the same shape and size.

[0070] Furthermore, an area formed by a plurality of through holes 21 arranged at second intervals P2 in the short-side direction (Y direction) of through holes 21 is defined as opening area 23. Opening area 23 is an area surrounding a plurality of through holes 21 arranged at second intervals P2 in the short-side direction (Y direction) of through holes 21.

[0071] The second housing 3 is provided with a plurality of opening regions 23. The plurality of opening regions 23 are provided with a first interval P1 between them. In this embodiment, twelve opening regions 23 are provided for one battery 10. However, the number of opening regions 23 is not limited to this.

[0072] Next, the partition outer wall 22 will be described in detail.

[0073] As shown in FIG. 6 , the partition outer wall 22 is provided between the plurality of through holes 21 that are adjacent to each other in the width direction (X direction) of the second housing 3. In other words, the partition outer wall 22 is formed in a region sandwiched between the plurality of opening regions 23 in the width direction (X direction) of the second housing 3. The partition outer wall 22 has an area Sb that is larger than the opening area Sa of the plurality of through holes 21 in a plan view. Specifically, the area Sb of the partition outer wall 22 is larger than the opening area of ​​the opening region 23 in a plan view. Note that the opening area of ​​the opening region 23 is the sum of the opening areas Sa of the plurality of through holes 21 in a plan view. This ensures the mechanical strength of the second housing 3.

[0074] As shown in Fig. 7, the partition outer wall 22 is provided between the multiple battery cells 12 of the battery 10 in a plan view. In this embodiment, partition walls 15 are arranged between the multiple battery cells 12. Therefore, the partition outer wall 22 is arranged in a position that overlaps with the partition wall 15 of the battery 10 in a plan view. In other words, the partition wall 15 is arranged in a position that overlaps with the partition outer wall 22 in a plan view. This makes it possible to prevent a flame from spreading between adjacent battery cells 12 and to prevent heat from being transferred.

[0075] Next, the flow path 40 between the battery 10 and the second housing 3 will be described.

[0076] As shown in Fig. 7, a flow path 40 extending to the multiple through-holes 21 is provided between the battery 10 and the second housing 3. The flow path 40 is formed by a gap between the battery 10 and the second housing 3. Specifically, the flow path 40 is defined by the outer wall of the battery case 11 and the inner wall of the second housing 3. The flow path 40 is formed so as to surround the outer wall of the battery case 11.

[0077] The flow path 40 includes a first flow path 41 on the side where the plurality of through holes 21 are located and a second flow path 42 on the opposite side to the side where the plurality of through holes 21 are located. The first flow path 41 is smaller than the second flow path 42.

[0078] The first flow path 41 is formed by a gap formed between the first case 13 of the battery case 11 and the bottom case 20A of the second housing 3. The second flow path 42 is formed by a gap formed between the second case 14 of the battery case 11 and the top case 20B of the second housing 3.

[0079] For example, the flow path width of the first flow path 41 is ¼ to 1 times the flow path width of the second flow path 42. Preferably, the flow path width of the first flow path 41 is 0.9 mm or more at its narrowest portion and 5.1 mm or less at its widest portion, and the flow path width of the second flow path 42 is 0.4 mm or more at its narrowest portion and 6 mm or less at its widest portion. Note that the flow path width refers to the dimension in the height direction (Z direction) of the electronic device 1. If the flow path widths of the first flow path 41 and the second flow path 42 are too narrow, the high-temperature gas cannot pass through and does not reach the film member 30. Also, if the flow path widths of the first flow path 41 and the second flow path 42 are too wide, the high-temperature gas may stagnate and not reach the film member 30. If the flow path widths of the first flow path 41 and the second flow path 42 are at least within the above-mentioned numerical ranges, the high-temperature gas can be prevented from stagnation.

[0080] If a flame or high-temperature gas occurs in the battery 10, the flow path 40 guides the flame or high-temperature gas toward the multiple through-holes 21. That is, the flame or high-temperature gas generated in the battery 10 moves through the flow path 40 toward the multiple through-holes 21. Furthermore, because the first flow path 41 is smaller than the second flow path 42, the flow velocity of the flame or high-temperature gas flowing through the first flow path 41 can be made higher than the flow velocity in the second flow path. This allows the flame or high-temperature gas to be quickly discharged from the multiple through-holes 21.

[0081] [Operation] Next, an example of the operation of the electronic device 1 will be described.

[0082] 9A and 9B are schematic diagrams for explaining an example of the operation of the electronic device 1 according to the first embodiment of the present disclosure. Fig. 9A shows an example of the operation of the electronic device 1 during normal use. Fig. 9B shows an example of the operation of the electronic device 1 when the battery 10 generates abnormal heat. Note that Figs. 9A and 9B show a simplified internal configuration of the electronic device 1 for ease of explanation.

[0083] 9A, during normal use of the electronic device 1, the plurality of through holes 21 are blocked by the film member 30. This prevents dust and water from entering the inside of the second housing 3 through the plurality of through holes 21. That is, blocking the plurality of through holes 21 with the film member 30 ensures the dustproof and waterproof properties of the electronic device 1.

[0084] As shown in Fig. 9B , in the event of abnormal heat generation in which a battery cell 12 in the battery 10 ignites and generates a flame B1 and / or high-temperature gas, the heat of the flame B1 and / or high-temperature gas generated in the battery cell 12 melts the battery case 11, and a hole 50 is formed in the battery case 11. The flame B1 and / or high-temperature gas flows from the hole 50 through the flow path 40 toward the multiple through-holes 21. Specifically, the flame B1 and / or high-temperature gas flows through the flow path 40, going around the outer wall of the battery case 11, as indicated by arrows FL1 and FL2 in Fig. 9B .

[0085] When the flame B1 and / or the high-temperature gas reaches the first flow path 41 provided with the plurality of through holes 21, the heat of the flame B1 and / or the high-temperature gas melts the film member 30. When the film member 30 melts, the plurality of through holes 21 are opened. As a result, the flame B1 and / or the high-temperature gas is discharged to the outside of the second housing 3 through the plurality of through holes 21.

[0086] [effect] According to the electronic device 1 of the first embodiment, the following effects can be achieved.

[0087] The electronic device 1 includes a battery 10, a housing 3, and a film member 30. The housing 3 houses the battery 10 inside. The housing 3 also has a plurality of through holes 21 formed in the position where the battery 10 is to be disposed. The film member 30 is disposed in the housing 3, closes the plurality of through holes 21, and melts when heated.

[0088] Such a configuration can improve the safety of the electronic device 1. Furthermore, the safety of the electronic device 1 can be improved with an inexpensive configuration. Specifically, during normal use, the film member 30 blocks the multiple through-holes 21, ensuring dustproofness and / or waterproofness. In the event of abnormal heat generation in which flame B1 and / or high-temperature gas is generated from the battery 10, the heat of the flame B1 and / or high-temperature gas melts the film member 30, opening the multiple through-holes 21. This allows the flame B1 and / or high-temperature gas to be exhausted from the multiple through-holes 21.

[0089] In this way, in the electronic device 1 in which the battery 10 is stored without being exposed to the outside of the housing 3, dustproofness and / or waterproofness are ensured during normal use, while flame B1 and / or high-temperature gas can be discharged to the outside of the housing 3 in the event of abnormal heat generation.

[0090] The plurality of through holes 21 have a slit shape extending in a longitudinal direction (X direction) and a lateral direction (Y direction) in a plan view. This configuration makes it possible to more easily discharge the flame B1 and / or high-temperature gas to the outside of the housing 3 in the event of abnormal heat generation, while suppressing a decrease in dustproofness and / or waterproofness during normal use. It also makes it possible to suppress a decrease in the mechanical strength of the housing 3, thereby further improving safety.

[0091] In a plan view, the multiple through holes 21 are arranged at a first interval P1 in the longitudinal direction and at a second interval P2 in the lateral direction that is smaller than the first interval P1. This configuration makes it easier to exhaust flame B1 and / or high-temperature gas to the outside of the housing 3 in the event of abnormal heat generation, thereby further improving safety.

[0092] The battery 10 has a plurality of battery cells 12, and the plurality of through-holes 21 are provided at positions that overlap the plurality of battery cells 12 in a plan view. With this configuration, if a flame B1 and / or high-temperature gas is generated from a battery cell 12, the flame B1 and / or high-temperature gas can be quickly exhausted from the through-holes 21 to the outside of the housing 3. This further improves safety.

[0093] The housing 3 has partition outer walls 22 that separate the multiple through holes 21. In a plan view, the partition outer walls 22 have an area Sb that is larger than the opening area Sa of the through holes 21. With this configuration, the mechanical strength of the housing 3 can be ensured.

[0094] The battery 10 has a partition wall 15 disposed between adjacent battery cells 12. In a plan view, the partition wall 15 is disposed in a position overlapping with the outer partition wall 22. This configuration makes it easier to isolate adjacent battery cells 12, further improving safety.

[0095] The film member 30 is disposed inside the housing 3. With this configuration, the film member 30 can be disposed closer to the heat source. Therefore, when the battery 10 generates abnormal heat, the film member 30 is easily melted by the heat, and the plurality of through-holes 21 can be quickly opened.

[0096] In the electronic device 1, a flow path 40 extending to the plurality of through holes 21 is provided between the battery 10 and the housing 3. With this configuration, when the battery 10 abnormally generates heat, the flame B1 and / or high-temperature gas can easily reach the plurality of through holes 21 through the flow path 40. This makes it easier for the flame B1 and / or high-temperature gas to be discharged from the plurality of through holes 21.

[0097] The flow path 40 includes a first flow path 41 on the side where the plurality of through holes 21 are located and a second flow path 42 on the opposite side to the side where the plurality of through holes 21 are located. The first flow path 41 is smaller than the second flow path 42. With this configuration, the flow velocity in the first flow path 41 can be made higher than the flow velocity in the second flow path 42. As a result, when abnormal heat is generated in the battery 10, the flow velocity of the flame B1 and / or the high-temperature gas increases in the first flow path 41, and the flame B1 and / or the high-temperature gas is quickly discharged from the plurality of through holes 21.

[0098] The battery 10 has a battery case 11 that defines the outer casing of the battery 10. The melting point of the film member 30 is lower than that of the battery case 11. This configuration makes it easier for the film member 30 to melt due to heat than the battery case 11. As a result, when the battery 10 abnormally generates heat, the film member 30 quickly melts, and the flame B1 and / or high-temperature gas can be discharged through the multiple through-holes 21.

[0099] The film member 30 includes a film and / or an adhesive tape. Such a configuration can further improve safety. Also, the film member 30 can be easily attached to the housing 3.

[0100] In the present embodiment, the electronic device 1 is a laptop PC, but is not limited to this. For example, the electronic device 1 may be a tablet PC, a smartphone, or other information processing device.

[0101] In the present embodiment, an example has been described in which the electronic device 1 houses two batteries 10, but the present invention is not limited to this. For example, the electronic device 1 may house one or more batteries 10.

[0102] In the present embodiment, an example has been described in which the battery cells 12 of the battery 10 are cylindrical cells, but the present invention is not limited to this. For example, the battery cells 12 may be prismatic cells.

[0103] In the present embodiment, an example in which the battery 10 has the partition wall 15 has been described, but the present invention is not limited to this. For example, the battery 10 does not need to have the partition wall 15.

[0104] In the present embodiment, an example has been described in which the multiple through holes 21 have substantially the same shape and size, but the present invention is not limited to this. For example, the multiple through holes 21 may have different shapes and / or sizes. For example, the size of the multiple through holes 21 on the central side of the second housing 3 may be larger than that on the end sides. This makes it easier to discharge the flame B1 and / or high-temperature gases flowing through the central side of the second housing 3, which is more airtight, from the multiple through holes 21.

[0105] In the present embodiment, an example has been described in which the plurality of through holes 21 are arranged at a first interval P1 in the longitudinal direction and at a second interval P2 in the lateral direction in a plan view, but this is not limiting. For example, the plurality of through holes 21 may be arranged in a staggered pattern. Alternatively, the plurality of through holes 21 may be arranged at different intervals.

[0106] In the present embodiment, an example has been described in which the film member 30 is disposed inside the second housing 3, but the present invention is not limited to this. For example, the film member 30 may be disposed outside the second housing 3.

[0107] Although the present disclosure has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art, and such changes and modifications are to be understood as being included within the scope of the present disclosure as defined by the appended claims unless they depart therefrom. [Industrial Applicability]

[0108] The present disclosure can improve safety and is therefore applicable to, for example, electronic devices that house batteries inside (such as laptop PCs and tablet PCs). [Explanation of symbols]

[0109] 1 Electronic equipment 2. First enclosure 3 Second enclosure 4 Display 5 Keyboard 6 Touchpad 7 Hinge part 8 Storage area 9 Lid 10 Battery 11 Battery case 12 battery cells 13 Case 1 14 Case 2 15 Bulkhead 20A bottom case 20B Top Case 21 Through hole 22 Partition exterior wall 23 Opening area 30 Film material 40 flow path 41 First Channel 42 Second Channel 50 holes B1 Flame D1 First dimension D2 Second dimension P1 First interval P2 2nd interval

Claims

1. Battery and a housing that houses the battery therein and has a plurality of through holes at positions where the battery is disposed; a film member that is disposed on the housing, closes the plurality of through holes, and melts when heated; Equipped with The melting point of the film member is 100°C or higher and lower than the melting point of the housing. electronic equipment.

2. Each of the plurality of through holes has a slit shape having a longitudinal direction and a lateral direction in a plan view. The electronic device according to claim 1 .

3. the plurality of through holes are arranged at first intervals in the longitudinal direction and at second intervals in the lateral direction, the second intervals being smaller than the first intervals, in a plan view; The electronic device according to claim 2 .

4. the battery has a plurality of battery cells; the plurality of through holes are provided at positions overlapping the plurality of battery cells in a plan view; The electronic device according to any one of claims 1 to 3.

5. the housing has a partition outer wall that partitions the plurality of through holes, The partition outer wall has an area larger than the opening areas of the plurality of through holes in a plan view. The electronic device according to any one of claims 1 to 4.

6. The battery has a partition wall disposed between two adjacent battery cells, The partition wall is disposed at a position overlapping the outer partition wall in a plan view. The electronic device according to claim 5 .

7. The film member is disposed inside the housing. The electronic device according to any one of claims 1 to 6.

8. A flow path is provided between the battery and the housing, the flow path extending along the plurality of through holes. The electronic device according to any one of claims 1 to 7.

9. the flow path includes a first flow path that is closer to the plurality of through holes than the battery, and a second flow path that is farther from the plurality of through holes than the battery, The width of the first flow path is smaller than the width of the second flow path.

9. The electronic device according to claim 8.

10. The battery has a battery case that defines an outer shell of the battery; The melting point of the film member is lower than the melting point of the battery case. The electronic device according to any one of claims 1 to 9.

11. The film member includes at least one of a film and an adhesive tape. The electronic device according to any one of claims 1 to 10.

12. The film member is made of polyethylene terephthalate, polyethylene, or polypropylene. The electronic device according to claim 1 .

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