Battery pack and electric device

Abstract

The application relates to the technical field of battery pack structures, and discloses a battery pack and an electric equipment, which have a first direction. The battery pack comprises a box body, a partition plate, a battery, an adhesive piece, a glue limiting strip and a glue blocking strip. The partition plate is located in the box body and has a through hole. The battery is located in the box body and is provided with an explosion-proof valve which is arranged in correspondence with the through hole. The adhesive piece is provided in multiple numbers and is located between the partition plate and the battery to connect the battery and the partition plate. The multiple adhesive pieces are arranged at intervals, and the orthographic projection of each adhesive piece on the partition plate along the first direction is arranged in dislocation with the through hole. The circumferential edge of the adhesive piece is provided with the glue limiting strip which is arranged in contact with the adhesive piece and connects the partition plate and the battery along the first direction. The glue blocking strip is arranged on the side of the glue limiting strip away from the adhesive piece and is arranged at intervals with the glue limiting strip to form a glue overflow space, and the glue blocking strip is connected with the partition plate. The problems of poor glue discharge and poor glue sticking effect caused by the connecting glue in the battery pack and glue waste are solved or improved.

Description

Technical Field

[0001] This application relates to the field of battery pack structure technology, specifically to a battery pack and electrical equipment. Background Technology

[0002] In related technologies, battery packs typically contain multiple batteries arranged in a matrix. The bottom of the batteries is connected to the inner bottom of the battery pack casing with adhesive to improve the integration of the batteries and the battery casing, thereby enhancing the power supply stability of the battery pack.

[0003] Since the battery's explosion-proof valve is located at the bottom of the battery, a vent hole or other structure is opened at the bottom of the battery pack housing to connect with the battery's explosion-proof valve for venting. However, the adhesive connecting the battery and the inner bottom of the battery pack housing may cover the vent hole or flow into the vent hole, which will not only affect venting but also cause poor bonding and waste of adhesive. Utility Model Content

[0004] In view of this, this application provides a battery pack and electrical device to solve or improve the problems of poor venting, poor adhesive effect, and glue waste caused by the connecting adhesive in the battery pack.

[0005] On one hand, this application provides a battery pack with a first orientation, the battery pack including a housing, a separator, a battery, an adhesive component, a sealing strip, and a blocking strip, the specific solution of which is as follows.

[0006] A partition is located inside the box, and the partition has a through hole that penetrates the partition along the first direction.

[0007] The battery is located inside the box, and an explosion-proof valve is installed on the side of the battery facing the partition. The explosion-proof valve is installed corresponding to the through hole.

[0008] Multiple adhesive components are provided between the separator and the battery to connect the battery and the separator. The multiple adhesive components are spaced apart, and the orthographic projection of each adhesive component on the separator along the first direction is offset from the through hole.

[0009] The adhesive strip is provided on the circumferential edge of the adhesive component. The adhesive strip is in contact with the adhesive component. Along the first direction, the adhesive strip connects the separator and the battery.

[0010] A sealant strip is disposed on the side of the adhesive limiting strip away from the adhesive component. The sealant strip and the adhesive limiting strip are spaced apart to form an overflow space. The sealant strip is connected to the partition.

[0011] Beneficial effects: The use of adhesive connectors to connect the battery and separator, with adhesive-limiting strips along the circumferential edge of the connectors, limits the amount of adhesive injected into the separator during the bonding process. This ensures a uniform thickness of the adhesive connector and avoids uneven adhesive thickness, which could result in parts of the connector not contacting the battery and wasting adhesive. This increases the connection area between the battery and the adhesive connector, improves the connection strength, and ultimately enhances the bonding effect.

[0012] It also employs a method where the orthographic projection of the adhesive component on the partition is offset from the through hole along the first direction. A glue-limiting strip is provided along the circumferential edge of the adhesive component, and a glue-blocking strip is provided between the through hole and the glue-limiting strip. Thus, when a large amount of glue is injected, the glue overflows the glue-limiting strip and enters the overflow space. The presence of the glue-blocking strip can prevent the glue in the overflow space from flowing into the through hole, thus preventing the glue from covering the through hole or flowing into the through hole and affecting the air venting of the through hole.

[0013] In an optional embodiment, the adhesive-blocking strip has a recess on its side facing the adhesive-limiting strip.

[0014] In an alternative embodiment, the rubber strip is disposed in at least partial contact with the battery.

[0015] In an optional embodiment, the battery pack further includes a blocking sheet located on the side of the separator facing the battery and covering the through hole, wherein the adhesive strip is spaced apart from the blocking sheet, or the adhesive strip is connected to the blocking sheet.

[0016] In one optional embodiment, the seal strip includes a seal body, a first closure member, and a second closure member. The first closure member is located on the side of the seal body near the partition and is connected to both the seal body and the partition. The second closure member is located on the side of the seal body near the battery and is connected to both the seal body and the battery. The seal body is spaced apart from or connected to the partition, and the seal body is spaced apart from or connected to the battery.

[0017] In an alternative embodiment, the adhesive-blocking body is provided with a first positioning groove, and at least a portion of the first sealing member along the first direction is accommodated within the first positioning groove.

[0018] In an optional embodiment, the adhesive-blocking body is provided with a second positioning groove, and at least a portion of the second closure member along the first direction is accommodated within the second positioning groove.

[0019] In an optional embodiment, the adhesive-limiting strip is provided with an overflow groove on the side facing the battery, the overflow groove extending through the adhesive-limiting strip in the direction from the adhesive member to the adhesive-blocking strip.

[0020] In an optional embodiment, the partition includes a first plate and a second plate that are overlapped along the first direction, a cooling cavity is provided between the first plate and the second plate, and the through hole is provided through the first plate and the second plate and is spaced apart from the cooling cavity.

[0021] On the other hand, this application also provides an electrical device including a battery pack as described in any of the above embodiments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies 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.

[0023] Figure 1 This is an exploded view of a battery pack without individual battery cells according to an embodiment of this application;

[0024] Figure 2 This is a top view of a battery pack according to an embodiment of this application;

[0025] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0026] Figure 4 for Figure 3 A magnified view of part of C;

[0027] Figure 5 This is a schematic diagram of the structure of the glue injection area and the venting area in a battery pack according to an embodiment of this application;

[0028] Figure 6 for Figure 5 A magnified view of part B in the diagram;

[0029] Figure 7 This is a schematic diagram of the cooperation structure between the blocking sheet and the adhesive strip in a battery pack according to an embodiment of this application;

[0030] Figure 8 This is a schematic diagram of the cooperation structure between the blocking sheet and the adhesive strip in another battery pack according to an embodiment of this application;

[0031] Figure 9 This is a schematic diagram of the cooperation structure between the blocking sheet and the adhesive strip in another battery pack according to an embodiment of this application;

[0032] Figure 10This is a schematic diagram of the cooperation structure between the blocking sheet and the adhesive strip in another battery pack according to an embodiment of this application;

[0033] Figure 11 This is a schematic diagram of the structure of a sealant body according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] Z, first direction; Y, second direction; X, third direction;

[0036] 1. Housing; 2. Cover; 3. Divider; 4. Battery; 5. Adhesive components; 6. Barrier plate; 7. Adhesive limiting strip; 8. Adhesive blocking strip; 9. Adhesive overflow space;

[0037] 11. First opening; 12. Receiving cavity; 13. Frame; 14. Base plate; 31. Through hole; 32. First plate; 33. Second plate; 34. Cooling cavity; 41. Explosion-proof valve; 71. Overflow groove; 81. Recess; 82. Glue-blocking body; 83. First sealing element; 84. Second sealing element;

[0038] 131. Second opening; 121. First chamber; 122. Second chamber; 821. First positioning groove; 822. Second positioning groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. 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.

[0040] In related technologies, battery packs typically contain multiple batteries arranged in a matrix. The bottom of the batteries is connected to the inner bottom of the battery pack casing with adhesive to improve the integration of the batteries and the battery casing, thereby enhancing the power supply stability of the battery pack.

[0041] Since the battery's explosion-proof valve is located at the bottom of the battery, a vent hole or other structure is opened at the bottom of the battery pack housing to connect with the battery's explosion-proof valve for venting. However, the adhesive connecting the battery and the inner bottom of the battery pack housing may cover the vent hole or flow into the vent hole, which will not only affect venting but also cause poor bonding and waste of adhesive.

[0042] Therefore, this application provides a battery pack and electrical device to solve or improve the problems of poor venting, poor adhesive effect, and glue waste caused by the connecting adhesive in the battery pack.

[0043] The following is combined with Figures 1 to 11 This describes an embodiment of the present application.

[0044] According to embodiments of this application, in one aspect, a battery pack is provided, such as... Figure 1 As shown, the battery pack has a first direction Z, a second direction Y and a third direction X that intersect each other. The battery pack includes a housing 1, a separator 3, a battery 4, an adhesive component 5, a sealing strip 7 and a sealing strip 8. The specific scheme is as follows.

[0045] like Figure 1 As shown, the housing 1 includes a frame 13, a cover plate 2, and a bottom plate 14. The frame 13 has a first opening 11 and a second opening 131 along the first direction Z. The cover plate 2 is connected to the frame 13 and covers the first opening 11. The bottom plate 14 is connected to the frame 13 and covers the second opening 131, forming a receiving cavity 12. The frame 13 is a metal frame, specifically an aluminum frame. The top cover is a metal cover plate 2 or a plastic cover plate 2. The bottom plate 14 is a metal cover plate 2, such as an aluminum plate. Specifically, the top cover is fixedly connected to the frame 13 by bolts or other fasteners, and the bottom plate 14 is fixedly connected to the frame 13 by welding or bolting.

[0046] like Figure 1 As shown, partition 3 is located inside box 1, specifically, as follows: Figures 4 to 6 As shown, the partition 3 is fixed to the receiving cavity 12 of the housing 1 by welding or screwing, dividing the receiving cavity 12 into a first chamber 121 and a second chamber 122; Figure 5 As shown, the partition 3 has a through hole 31, which penetrates the partition 3 along the first direction Z to connect the first chamber 121 and the second chamber 122. Specifically, as shown... Figure 1 As shown, there are multiple through holes 31, which can be arranged in a rectangular array. The shape of the through holes 31 can be circular, square, or any other shape. The number and arrangement of the through holes 31 can be set according to the number and arrangement of the batteries 4.

[0047] like Figure 1 As shown, battery 4 is located inside housing 1. Multiple batteries 4 can be present; specifically, battery 4 can be a stacked battery 4, or a wound battery 4, etc. The preferred shape of battery 4 is a cuboid. Multiple batteries 4 are housed within receiving cavity 12, and are arranged in a matrix along the first direction Z and the second direction Y, such as... Figure 5 As shown, an explosion-proof valve 41 is provided on the side of the battery 4 facing the separator 3. The explosion-proof valve 41 is correspondingly provided with the through hole 31 and is connected to it.

[0048] like Figure 1 and Figure 5As shown, multiple adhesive components 5 are provided and located between the separator 3 and the battery 4 to connect the battery 4 and the separator 3. Specifically, the adhesive component 5 is an adhesive layer formed by glue. Multiple adhesive components 5 are arranged at intervals. The orthographic projection of each adhesive component 5 on the separator 3 along the first direction Z is offset from the through hole 31. That is, when viewed along the first direction Z, the adhesive component 5 and the through hole 31 do not coincide.

[0049] More specifically, the thickness of the adhesive component 5 is 0.5mm to 1mm, which can be any one or any two values ​​among 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1mm; the width of the adhesive component 5 is 50mm to 150mm, which can be any one or any two values ​​among 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm and 150mm. Within the above range, the width and thickness of the adhesive component 5 can ensure the bonding strength between the battery 4 and the separator 3, and reduce the amount of glue used to reduce production costs. If it is lower than the above range, the bonding strength between the battery 4 and the casing 1 cannot be guaranteed. If it is higher than the above range, it will waste the amount of glue used.

[0050] like Figure 2 and Figure 3 As shown, a limiting adhesive strip 7 is provided along the circumferential edge of the adhesive component 5. The limiting adhesive strip 7 is in contact with the adhesive component 5. Along the first direction Z, the limiting adhesive strip 7 connects the separator 3 and the battery 4. Specifically, the limiting adhesive strip 7 and the separator 3 are connected by adhesive bonding. The limiting strip can be a polyurethane strip or an acrylic strip.

[0051] like Figure 3 and Figure 5 As shown, the adhesive-blocking strip 8 is located on the side of the adhesive-limiting strip 7 away from the adhesive component 5, that is, the adhesive-blocking strip 8 is located between the through hole 31 and the adhesive-limiting strip 7; the adhesive-blocking strip 8 and the adhesive-limiting strip 7 are spaced apart to form an overflow space 9. The adhesive-blocking strip 8 and the partition 3 are connected by adhesive bonding. Specifically, the adhesive-blocking strip 8 is a polyurethane strip or an acrylic strip. The interval between the adhesive-blocking strip 8 and the adhesive-limiting strip 7 is 3mm to 20mm, which can be any one or any two values ​​of 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm and 20mm.

[0052] Specifically, the adhesive strip 8 can be ring-shaped, surrounding the through hole 31. More specifically, the adhesive strip 8 can be any ring shape, such as circular or square. Of course, the adhesive strip 8 can also be open, combined with other components to surround the through hole 31 and isolate the adhesive.

[0053] During the specific assembly process of the battery pack, the glue-limiting strip 7 and the glue-blocking strip 8 are both attached to the separator 3 by a robotic arm. Then, glue is injected into the space formed by the glue-limiting strip 7 using a glue gun to form the adhesive component 5. The side of the battery 4 with the explosion-proof valve 41 is then placed facing the separator 3 and connected to the adhesive component 5. At this time, the explosion-proof valve 41 faces the corresponding through hole 31. During the process of the battery 4 and the adhesive component 5 being connected, if the amount of glue injected is large, it will overflow the glue-limiting strip 7 and flow into the overflow space. With the glue-blocking strip 8 blocking it, the glue can be prevented from covering the through hole 31 or flowing into the through hole 31.

[0054] In this embodiment, an adhesive component 5 is used to connect the battery 4 and the separator 3, and a glue-limiting strip 7 is provided on the circumferential edge of the adhesive component 5. During the process of injecting glue onto the separator 3 to form an adhesive, the glue-limiting strip 7 can limit the glue, making the thickness of the adhesive component 5 uniform. This avoids the problem of uneven glue thickness, which would result in some areas of the adhesive component 5 not contacting the battery 4 and wasting glue. This increases the connection area between the battery 4 and the adhesive component 5, improves the connection strength between the battery 4 and the adhesive component 5, and thus improves the bonding effect.

[0055] It also adopts a first direction Z, in which the orthographic projection of the adhesive 5 on the partition plate 3 is offset from the through hole 31. A glue-limiting strip 7 is provided on the circumferential edge of the adhesive 5, and a glue-blocking strip 8 is provided between the through hole 31 and the glue-limiting strip 7. Thus, when a large amount of glue is injected, the glue overflows the glue-limiting strip 7 and enters the overflow space. The presence of the glue-blocking strip 8 can prevent the glue in the overflow space from flowing into the through hole 31, thus preventing the glue from covering the through hole 31 or flowing into the through hole 31 and affecting the air venting of the through hole 31.

[0056] In one embodiment, such as Figures 8 to 11 As shown, a recessed portion 81 is provided on the side of the adhesive strip 8 facing the adhesive limiting strip 7. Specifically, the shape of the recessed portion 81 can be an arc-shaped groove, such as a semi-circular groove, or a square groove, as long as it can increase the volume of the overflow space.

[0057] Specifically, there can be one or more recesses 81, arranged on the side of the adhesive strip 8 facing the adhesive strip 7.

[0058] In this embodiment, by providing a recessed portion 81 on the side of the adhesive-blocking strip 8 facing the adhesive-limiting strip 7, the volume of the overflow space can be increased, thereby increasing the amount of adhesive stored in the overflow space.

[0059] In one embodiment, the rubber strip 8 is configured to at least partially contact the battery 4, such as... Figures 8 to 10As shown, the rubber baffle 8 is in contact with the battery 4. The arrangement of the rubber baffle 8 and the battery 4 with a gap is not shown in the diagram. Specifically, when the rubber baffle 8 and the battery 4 are spaced apart, the gap size is 0.3mm to 0.5mm, which can be any one of 0.3mm, 0.4mm and 0.5mm or any range between any two values.

[0060] In this embodiment, whether the adhesive strip 8 is spaced apart from or in contact with the battery 4, it does not affect the blocking effect on the adhesive entering the overflow space.

[0061] In one embodiment, such as Figures 6 to 10 As shown, the battery pack also includes a blocking plate 6, which is located on the side of the separator 3 facing the battery 4 and covers the through hole 31, as shown. Figure 8 As shown, the rubber-blocking strip 8 and the blocking plate 6 are connected and configured, more specifically, as follows: Figure 7 and Figure 9 As shown, the rubber-blocking strip 8 and the blocking plate 6 are integrally formed structures.

[0062] Specifically, the blocking sheet 6 can be an MPP foam board or a mica board, and the thickness of the blocking sheet 6 is 0.5mm to 0.8mm, which can be any one or any two of 0.5mm, 0.6mm, 0.7mm and 0.8mm; the width of the blocking sheet 6 along the third direction X is 110mm to 130mm, which can be any one or any two of 110mm, 115mm, 120mm, 125mm and 130mm.

[0063] In this embodiment, the blocking plate 6 is provided to prevent the high-temperature and high-pressure material ejected during the thermal runaway of a single battery 4 from directly contacting adjacent cells and causing multi-cell thermal runaway, thus playing a blocking role; the adhesive strip 8 and the blocking plate 6 can be in two forms of cooperation, which can be selected according to actual needs.

[0064] In one embodiment, such as Figure 8 As shown, the adhesive strip 8 includes an adhesive strip body 82, a first sealing member 83, and a second sealing member 84. The first sealing member 83 is located on the side of the adhesive strip body 82 close to the partition 3 and is connected to both the adhesive strip body 82 and the partition 3. Specifically, the first sealing member 83 is connected to the partition 3 by adhesive bonding, and the first sealing member 83 is connected to the adhesive strip body 82 by adhesive bonding or welding.

[0065] The second sealing member 84 is located on the side of the adhesive barrier body 82 near the battery 4, and is connected to both the adhesive barrier body 82 and the battery 4. Specifically, the second sealing member 84 is connected to the adhesive barrier body 82 by adhesive bonding or welding. The second sealing member 84 and the battery 4 can be spaced apart or connected, for example, by adhesive bonding.

[0066] The adhesive-blocking body 82 is spaced apart from or connected to the partition 3, and the adhesive-blocking body 82 is spaced apart from or connected to the battery 4, that is, as follows: Figure 7 As shown, the adhesive-blocking body 82 and the partition 3 are spaced apart, and the adhesive-blocking body 82 and the battery 4 are spaced apart; for example... Figure 8 As shown, the adhesive barrier body 82 and the separator 3 are connected, and the adhesive barrier body 82 and the battery 4 are connected; alternatively, as not shown in the figure, one option is that the adhesive barrier body 82 and the separator 3 are connected, and the adhesive barrier body 82 and the battery 4 are spaced apart; another option is that the adhesive barrier body 82 and the separator 3 are spaced apart, and the adhesive barrier body 82 and the battery 4 are connected.

[0067] Specifically, such as Figure 8 As shown, the adhesive-blocking body 82 and the blocking sheet 6 are connected by adhesive bonding, or as... Figure 9 As shown, the adhesive barrier body 82 and the blocking sheet 6 are integrally molded structures, or as... Figure 10 As shown, the adhesive barrier body 82 and the blocking sheet 6 can be arranged at intervals.

[0068] Specifically, the adhesive blocking body 82 is an MPP foam board or a mica board, and its thickness can be the same as or thicker than the blocking sheet 6. More specifically, the thickness of the adhesive blocking body 82 is 0.5mm to 0.8mm, preferably any one of 0.5mm, 0.6mm, 0.7mm and 0.8mm.

[0069] The first sealing element 83 and the second sealing element 84 can be polyurethane strips or acrylic strips.

[0070] It is worth noting that the second sealing member 84 is connected to the adhesive barrier body 82. The second sealing member 84 can be connected to the battery 4 or can be spaced apart. Preferably, the second sealing member 84 is connected to the battery 4.

[0071] In this embodiment, the adhesive strip 8 includes an adhesive strip body 82 and a first sealing member 83 and a second sealing member 84. The first sealing member 83 is connected to the separator 3, and the second sealing member 84 is spaced apart from or connected to the battery 4. This can reduce the area of ​​the blocking piece 6. At the same time, the blocking piece 6 can be connected to the separator 3 through the first sealing strip.

[0072] In a specific embodiment, such as Figure 10 and Figure 11As shown, the adhesive barrier body 82 is provided with a first positioning groove 821, and at least a portion of the first sealing member 83 along the first direction Z is accommodated in the first positioning groove 821. Specifically, the width of the first positioning groove 821 matches the width of the first sealing member 83. A portion of the first sealing member 83 along the first direction Z is disposed in the first positioning groove 821, or the entire first sealing member 83 can be accommodated in the first positioning groove 821. However, when a portion of the first sealing member 83 along the first direction Z is disposed in the first positioning groove 821, the elastic compression coefficient of the first sealing member 83 is less than the elastic compression coefficient of the adhesive barrier body 82.

[0073] like Figure 10 and Figure 11 As shown, the adhesive barrier body 82 is provided with a second positioning groove 822, and at least a portion of the second sealing member 84 along the first direction Z is accommodated in the second positioning groove 822. Specifically, the width of the second positioning groove 822 matches the width of the second sealing member 84, and a portion of the second sealing member 84 along the first direction Z is disposed in the second positioning groove 822. Alternatively, the entire second sealing member 84 can be accommodated in the second positioning groove 822. However, when a portion of the second sealing member 84 along the first direction Z is disposed in the second positioning groove 822, the elastic compression coefficient of the second sealing member 84 is less than the elastic compression coefficient of the adhesive barrier body 82.

[0074] In this embodiment, by providing a first positioning groove 821 and a second positioning groove 822 on the adhesive barrier body 82, the connection between the first sealing member 83 and the second sealing member 84 and the adhesive barrier body 82 can be facilitated, and the connection strength between the first sealing member 83 and the second sealing member 84 and the adhesive barrier body 82 can be enhanced.

[0075] In one embodiment, such as Figure 10 As shown, the rubber-blocking strip 8 and the blocking piece 6 are spaced apart. Specifically, the exact value of the distance between the rubber-blocking strip 8 and the blocking piece 6 is not limited.

[0076] In one embodiment, such as Figure 2 and Figure 3 As shown, an overflow groove 71 is provided on the side of the adhesive strip 7 facing the battery 4. The overflow groove 71 extends through the adhesive strip 7 along the direction from the adhesive member 5 to the adhesive strip 8. Specifically, there can be multiple overflow grooves 71, which are spaced apart along the length of the adhesive strip 7. The cross-section of the overflow groove 71 can be semi-circular, square, or other shapes.

[0077] During the battery pack assembly process, after the glue is injected into the area enclosed by the glue-limiting strip 7, the glue will form a bonding component 5 with a basically uniform thickness under the restriction of the glue-limiting strip 7. Since the glue has a certain viscosity, there will be a part of the bonding component 5 that is thicker. Then the battery 4 is brought into contact with the bonding component 5. Under the pressure of the battery 4, the thicker part of the glue may not be able to spread to the surrounding area in time, affecting the bonding of the glue to the battery 4 in other parts. The overflow groove 71 can discharge this excess glue to the overflow space, so that all parts of the bonding component 5 can be in contact with the battery 4.

[0078] In this embodiment, by providing an overflow groove 71, adhesive that affects the bonding effect of other parts can be discharged to the overflow space, thereby increasing the effective bonding area between the battery 4 and the adhesive 5 and improving the connection strength between the battery 4 and the adhesive 5.

[0079] In one embodiment, such as Figures 4 to 6 As shown, the partition 3 includes a first plate 32 and a second plate 33 that are overlapped along the first direction Z, as... Figure 5 and Figure 6 As shown, a cooling cavity 34 is provided between the first plate 32 and the second plate 33. A through hole 31 is provided through the first plate 32 and the second plate 33, and is spaced apart from the cooling cavity 34. Specifically, the first plate 32 and the second plate 33 are fitted together at the part of the partition 3 where the through hole 31 is provided. More specifically, the first plate 32 and the second plate 33 are fitted together at the part of the partition 3 where the through hole 31 is provided by welding or bonding.

[0080] Specifically, the cooling chamber 34 can be connected to the external coolant circulation system, and the adhesive 5 is a thermally conductive block, which can improve the cooling effect on the battery 4.

[0081] In this embodiment, by providing a liquid cooling cavity on the separator 3, the part of the battery 4 facing the separator 3 can be cooled, thereby improving the operating performance of the battery 4.

[0082] According to an embodiment of this application, another aspect provides an electrical device including a battery pack as described in any of the above examples.

[0083] Specifically, electrical equipment can be electric vehicles, energy storage devices, drones, and other devices that require electricity.

[0084] In this embodiment, since the electrical device includes the aforementioned battery pack and has the same effect as the battery pack, it will not be described again here.

[0085] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery pack having a first orientation, characterized in that, The battery pack includes: Box; A partition is located inside the box, the partition having a through hole that penetrates the partition along the first direction; The battery is located inside the box, and an explosion-proof valve is provided on the side of the battery facing the partition. The explosion-proof valve is provided in accordance with the through hole. Multiple adhesive components are provided and located between the separator and the battery to connect the battery and the separator. The multiple adhesive components are spaced apart, and the orthographic projection of each adhesive component on the separator along the first direction is offset from the through hole. A limiting strip is provided along the circumferential edge of the adhesive component. The limiting strip is in contact with the adhesive component and connects the separator and the battery along the first direction. A sealant strip is disposed on the side of the adhesive limiting strip away from the adhesive component. The sealant strip and the adhesive limiting strip are spaced apart to form an overflow space. The sealant strip is connected to the partition.

2. The battery pack according to claim 1, characterized in that, The adhesive strip has a recessed portion on the side facing the adhesive limiting strip.

3. The battery pack according to claim 1, characterized in that, The rubber strip is configured to make at least partial contact with the battery.

4. The battery pack according to any one of claims 1 to 3, characterized in that, The battery pack also includes a blocking plate, which is located on the side of the separator facing the battery and covers the through hole. The sealing strip is spaced apart from the blocking plate, or the sealing strip is connected to the blocking plate.

5. The battery pack according to any one of claims 1 to 3, characterized in that, The sealing strip includes a sealing body, a first sealing member, and a second sealing member. The first sealing member is located on the side of the sealing body near the partition and is connected to both the sealing body and the partition. The second sealing member is located on the side of the sealing body near the battery and is connected to both the sealing body and the battery. The sealing body is spaced apart from or connected to the partition, and the sealing body is spaced apart from or connected to the battery.

6. The battery pack according to claim 5, characterized in that, The adhesive barrier body is provided with a first positioning groove, and at least a portion of the first sealing member along the first direction is accommodated in the first positioning groove.

7. The battery pack according to claim 5, characterized in that, The adhesive-blocking body is provided with a second positioning groove, and at least a portion of the second sealing member along the first direction is accommodated in the second positioning groove.

8. The battery pack according to any one of claims 1 to 3, characterized in that, An overflow groove is provided on the side of the adhesive-limiting strip facing the battery, and the overflow groove passes through the adhesive-limiting strip in the direction from the adhesive member to the adhesive-blocking strip.

9. The battery pack according to any one of claims 1 to 3, characterized in that, The partition includes a first plate and a second plate that are overlapped along the first direction. A cooling cavity is provided between the first plate and the second plate. The through hole is provided through the first plate and the second plate and is spaced apart from the cooling cavity.

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 9.

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