Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and electric equipment, the battery pack comprises a box body, a plurality of battery cell monomers, a first spacer and a limiting adhesive tape; the box body comprises a liquid cooling plate, a frame, a bottom protection plate and a cover plate, and the cover plate, the frame and the bottom protection plate jointly define a containing cavity; the liquid cooling plate is arranged in the accommodating cavity and divides the accommodating cavity into a mounting space and a first exhaust channel; the plurality of battery cell single bodies are arranged in the mounting space; a first anti-explosion valve is arranged on one side, facing the liquid cooling plate, of each battery cell monomer; a plurality of exhaust holes are formed in the liquid cooling plate; the first spacer is arranged between the liquid cooling plate and the battery cell single body, the first spacer is provided with a plurality of isolation parts, and the isolation parts cover the exhaust holes; the adhesive limiting strips are located on the two opposite sides of the first spacer in the second direction. One side, away from the first spacer, of the adhesive limiting strip is provided with an adhesive filling area; and the glue limiting strip is used for preventing glue from the glue filling area from flowing to the first spacer. According to the battery pack provided by the utility model, the first exhaust channel is prevented from being blocked by glue.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery pack and an electrical device. Background Technology

[0002] Existing battery packs typically have independent venting channels for discharging ejected material in the event of thermal runaway from individual battery cells. Currently, the battery cells are often connected to the battery pack housing using adhesive. Due to the flow characteristics of adhesive, when it is near the venting channel, there is a possibility that some adhesive may seep into the channel through the gaps between the venting channel and the battery cell connection. This can cause blockage of the venting channel, affecting or even hindering its normal function. This prevents ejected material from entering the venting channel smoothly, and in severe cases, can even cause thermal diffusion within the battery pack, compromising the overall safety performance. Utility Model Content

[0003] In view of this, the present invention provides a battery pack and electrical equipment to solve the problem of glue easily flowing into the exhaust channel and causing blockage.

[0004] In a first aspect, this utility model provides a battery pack having a first direction, a second direction and a third direction that intersect each other, including: a housing, multiple individual battery cells, a first separator and a limiting strip;

[0005] The enclosure includes a liquid cooling plate, a frame, a bottom protective plate, and a cover plate. The frame has two opposing openings along a third direction. The cover plate and the bottom protective plate each cover one opening and are positioned opposite each other. The cover plate, the frame, and the bottom protective plate together enclose a receiving cavity. The liquid cooling plate is disposed in the receiving cavity and divides the receiving cavity into an installation space and a first exhaust channel. The liquid cooling plate has multiple exhaust holes arranged at intervals along a first direction to connect the installation space and the first exhaust channel.

[0006] Multiple battery cells are arranged along a first direction and built into the installation space; a first explosion-proof valve is provided on the side of the battery cell facing the liquid cooling plate along a third direction; multiple first explosion-proof valves and multiple vent holes are arranged opposite each other along a third direction.

[0007] The first partition is disposed between the liquid cooling plate and the battery cell. The first partition has multiple isolation parts, which are arranged sequentially along the first direction. The multiple isolation parts and multiple first explosion-proof valves are arranged opposite each other along the third direction, and the isolation parts are covered by the exhaust port.

[0008] The adhesive limiting strip is disposed on the side of the liquid cooling plate facing the cover plate along a third direction, and is located on both sides of the first partition along a second direction; the adhesive limiting strip has an adhesive filling area on the side away from the first partition along the second direction, the adhesive filling area being suitable for filling adhesive and bonding the battery cell and the liquid cooling plate; the adhesive limiting strip extends along a first direction and is used to block the flow of adhesive from the adhesive filling area to the first partition.

[0009] Beneficial effects: By setting adhesive-limiting strips on both sides of the first partition in the second direction Y, the adhesive-limiting strips first block the adhesive from entering the area between the adhesive-limiting strip and the first partition. Then, the tight fit between the first partition and the liquid cooling plate further blocks the adhesive from entering the gap between the first partition and the liquid cooling plate, thereby preventing the adhesive from entering the first exhaust channel. Through the double protection of the adhesive-limiting strip and the first partition, the adhesive can be effectively prevented from clogging the first exhaust channel.

[0010] In one optional embodiment, the isolation part includes a first connecting part, an opening part, and a plurality of ribs; the opening part and the first explosion-proof valve are disposed opposite each other in a third direction; the first connecting part is disposed around the peripheral outer edge of the opening part, the first connecting part and the peripheral outer edge of the opening part are spaced apart, and the first connecting part and the opening part are spaced apart, and the ribs are connected between the first connecting part and the opening part; the first connecting part abuts against the liquid cooling plate.

[0011] The first partition also includes a plurality of second connecting portions, which are connected between the first connecting portions of two adjacent partitions.

[0012] Beneficial effects: By connecting the opening part to the first connecting part through several ribs, when a certain cell experiences thermal runaway, the ejected material is ejected from the first explosion-proof valve of the cell under high pressure and impacts the opening part of the corresponding isolation part, forcing the ribs to break. This causes the opening part to fold open from the first connecting part, allowing the ejected material to pass through the corresponding vent hole and enter the first vent channel. The ribs of the isolation parts corresponding to other normal cell cells remain connected, preventing the ejected material from interfering with other normal cell cells and improving the safety of the battery pack. By connecting multiple isolation parts through the second connecting part, each first spacer can correspond to a row of vent holes. During assembly, only one isolation part needs to be aligned, eliminating the need for multiple alignments and improving the assembly accuracy and efficiency of the battery pack.

[0013] In one optional embodiment, the adhesive limiting strip is spaced apart from the first partition, and the adhesive limiting strip, the first connecting portion, and the second connecting portion together enclose the adhesive blocking area; the adhesive limiting strip is adapted to prevent the adhesive in the filling area from entering the adhesive blocking area.

[0014] Beneficial effects: By setting glue-limiting strips on both sides of the second direction Y of the first partition, glue in the glue-filling area is prevented from entering the glue-blocking area, thereby controlling the amount of glue and the thickness of the glue layer in the glue-filling area and the glue-blocking area. This can not only prevent glue overflow in the glue-blocking area and prevent glue from entering the first venting channel, but also make the glue layer thickness between the battery cell and the liquid cooling plate more uniform, ensuring the reliability and stability of the bonding between the battery cell and the liquid cooling plate.

[0015] In one alternative embodiment, the first connection portion is a circular ring structure; along a third direction, the projection of the first connection portion on the liquid cooling plate is located within the projection of the battery cell on the liquid cooling plate.

[0016] Beneficial effects: This ensures that the individual cell abuts against the first connecting part along the third direction Z, making the first spacer and the liquid cooling plate fit tightly together, further preventing glue from entering the gap between the first spacer and the liquid cooling plate, thereby preventing glue from entering the first venting channel and avoiding glue blockage of the first venting channel.

[0017] In one alternative embodiment, along the second direction, the second connecting portion has a width dimension D2, the first connecting portion has a width dimension D1, and D2 < D1.

[0018] Beneficial effects: This increases the bonding area between the battery cell and the liquid cooling plate, improves the bonding strength between the battery cell and the liquid cooling plate, and can press the second connecting part with the battery cell to prevent the first explosion-proof valve from shifting between the opening part and the vent.

[0019] In one alternative embodiment, the adhesive strip is disposed on the outer edge of the first connecting portion and the second connecting portion.

[0020] Beneficial effect: By setting adhesive-limiting strips on both sides of the first partition in the second direction Y, and the adhesive-limiting strips are set to fit the outer edges of the first connecting part and the second connecting part, the adhesive-limiting strips prevent glue from entering the gap between the first partition and the liquid cooling plate, thereby preventing glue from entering the first exhaust channel and preventing glue from clogging the first exhaust channel.

[0021] In one alternative embodiment, the battery pack further includes a second spacer attached to the side of the bottom protective plate facing the liquid cooling plate in a third direction;

[0022] The second partition and the vent are positioned opposite each other along a third direction.

[0023] Beneficial effects: By setting a second partition in the first exhaust channel, with the second partition and the exhaust port positioned opposite each other along the third direction Z, when a certain battery cell experiences thermal runaway, the ejected material is ejected from the first explosion-proof valve of that battery cell under high pressure and enters the first exhaust channel through the corresponding exhaust port. Due to the obstruction of the second partition, the heat of the ejected material is effectively prevented from being transferred to the bottom protection plate and other components, effectively reducing the risk of fire. At the same time, through the insulation effect of the second partition, short circuits caused under thermal runaway conditions are effectively prevented, ensuring the electrical safety of the battery pack.

[0024] In one alternative embodiment, the battery pack further includes a spring clip support, which is supported between the liquid cooling plate and the bottom protective plate, and the spring clip support is disposed on at least one side of the second spacer along the second direction.

[0025] Beneficial effect: It prevents the liquid cooling plate from collapsing between the liquid cooling plate and the bottom protective plate, thus ensuring the unobstructed flow of the first exhaust channel.

[0026] In one alternative embodiment, the frame has an air vent and a second exhaust channel, the air vent being connected to the first exhaust channel via the second exhaust channel;

[0027] A second explosion-proof valve is also provided on the frame, and the second explosion-proof valve is located in the vent.

[0028] Beneficial effects: It can timely discharge thermal runaway gas in the battery pack and cool the gas diffused in the second exhaust channel through the frame, reduce heat accumulation, prevent excessive pressure in the battery pack, and reduce the risk of battery pack explosion; the second explosion-proof valve can not only timely discharge thermal runaway gas in the battery pack, but also prevent external moisture and dust from entering the battery pack, which helps to extend the service life of the battery pack.

[0029] Secondly, this utility model also provides an electrical device, including: a device body, and a battery pack as described above.

[0030] Beneficial effects: By adopting the battery pack of the first aspect, the electrical equipment of the second aspect avoids the interference of the ejected substances of the thermal runaway cell to other normal cells, thus improving the safety of the battery pack. In addition, by setting adhesive-limiting strips on both sides of the second direction Y of the first separator, the adhesive-limiting strips first block the adhesive from entering the area between the adhesive-limiting strip and the first separator, and then the tight fit between the first separator and the liquid cooling plate further blocks the adhesive from entering the gap between the first separator and the liquid cooling plate, thereby preventing the adhesive from entering the first venting channel and avoiding the adhesive from blocking the first venting channel. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a top view of a battery pack with a first type of adhesive strip and a single row of individual cells inside, according to an embodiment of the present invention, wherein the cover plate is hidden;

[0033] Figure 2 This is a top view of the first partition of a battery pack according to an embodiment of the present utility model;

[0034] Figure 3 for Figure 1A magnified view of a portion of point A in the middle;

[0035] Figure 4 This is a perspective view of the frame of a battery pack according to an embodiment of the present utility model;

[0036] Figure 5 This is a partially enlarged schematic diagram of a battery pack with a second type of adhesive strip according to an embodiment of the present invention;

[0037] Figure 6 for Figure 1 A sectional view of section BB, in which the cover plate is hidden;

[0038] Figure 7 for Figure 6 A magnified view of a portion of point C in the middle;

[0039] Figure 8 for Figure 7 A magnified view of a portion of point D in the middle;

[0040] Figure 9 for Figure 7 The diagram shows the structure behind the cover plate;

[0041] Figure 10 for Figure 3 The structural diagram after the thermally conductive adhesive layer is formed by filling the middle adhesive area.

[0042] Explanation of reference numerals in the attached figures:

[0043] 10. Enclosure; 101. Installation space; 102. First exhaust channel; 103. Second exhaust channel; 11. Liquid cooling plate; 111. Exhaust port; 112. Cooling channel; 12. Frame; 1201. Opening; 1202. Vent; 121. Second explosion-proof valve; 13. Bottom guard plate; 14. Cover plate;

[0044] 20. Individual battery cell; 21. First explosion-proof valve;

[0045] 30. First partition; 31. Isolation part; 311. First connecting part; 312. Opening part; 313. Rib; 32. Second connecting part;

[0046] 40. Glue-restricting strip; 401. Glue-blocking area; 402. Glue-filling area;

[0047] 50. Thermally conductive adhesive layer;

[0048] 60. Second septum;

[0049] 70. Spring clip support;

[0050] X—first direction; Y—second direction; Z—third direction. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0052] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0053] According to an embodiment of this utility model, in one aspect, a battery pack is provided, having intersecting first directions X, second directions Y, and third directions Z. (See also...) Figure 1 As shown, it includes: a housing 10, multiple battery cells 20, a first spacer 30, and a sealing strip 40;

[0054] Please see Figure 9 As shown, the housing 10 includes a liquid cooling plate 11, a frame 12, a bottom protective plate 13, and a cover plate 14. The frame 12 has two opposing openings 1201 along the third direction Z. The cover plate 14 and the bottom protective plate 13 respectively cover one opening 1201 and are arranged opposite each other. The cover plate 14, the frame 12, and the bottom protective plate 13 together enclose a receiving cavity. The liquid cooling plate 11 is disposed in the receiving cavity and divides the receiving cavity into an installation space 101 and a first exhaust channel 102. The liquid cooling plate 11 has a plurality of exhaust holes 111 arranged at intervals along the first direction X, so that the installation space 101 and the first exhaust channel 102 are connected. The exhaust holes 111 penetrate the liquid cooling plate 11 along the third direction, so that the installation space 101 and the first exhaust channel 102 on both sides of the liquid cooling plate 11 are connected through the exhaust holes 111.

[0055] Multiple battery cells 20 are arranged along the first direction X and built into the mounting space 101. The side of the battery cell 20 facing the liquid cooling plate 11 along the third direction Z is bonded to the liquid cooling plate 11. Please refer to [link to relevant documentation]. Figure 8 As shown, a first explosion-proof valve 21 is provided on the side of the battery cell 20 facing the liquid cooling plate 11 along the third direction Z, and the first explosion-proof valve 21 and the exhaust port 111 are arranged opposite each other along the third direction Z, so that the ejected material when the first explosion-proof valve 21 is opened can enter the first exhaust channel 102 through the exhaust port 111.

[0056] In this embodiment, the installation space 101 is located between the cover plate 14 and the liquid cooling plate 11, and the first exhaust channel 102 is located between the liquid cooling plate 11 and the bottom protective plate 13.

[0057] The first partition 30 is disposed between the liquid cooling plate 11 and the battery cell 20. The first partition 30 has multiple isolation parts 31, which are arranged sequentially along the first direction X. The multiple isolation parts 31 and the multiple first explosion-proof valves 21 are arranged opposite to each other along the third direction Z, and the isolation parts 31 are covered by the exhaust port 111.

[0058] The adhesive limiting strip 40 is disposed on the side of the liquid cooling plate 11 facing the cover plate 14 along the third direction Z, and is located on opposite sides of the first partition 30 along the second direction Y; the adhesive limiting strip 40 has an adhesive filling area 402 on the side away from the first partition 30 along the second direction Y, the adhesive filling area 402 is suitable for filling adhesive and bonding the battery cell 20 and the liquid cooling plate 11; the adhesive limiting strip 40 extends along the first direction X and is used to block the adhesive from the adhesive filling area 402 from flowing to the first partition 30.

[0059] It should be noted that multiple battery cells 20 are evenly arranged along the first direction X and the second direction Y within the installation space 101. To clearly show the specific structure of the first spacer 30 and the relative position of the first spacer 30 and the battery cell 20, Figure 1 An example is provided of a battery pack and a plurality of battery cells 20 uniformly arranged in a single row along the second direction Y. The opening pressure threshold of the isolation section 31 is less than or equal to the opening pressure threshold of the first explosion-proof valve 21, and the opening pressure threshold of the isolation section 31 is greater than the maximum pressure threshold of the first exhaust channel 102. This allows the isolation section 31 to be opened by the high-temperature and high-pressure material ejected by the first explosion-proof valve 21, but it will not be affected by the ejected material diffused in the first exhaust channel 102, thereby protecting other normal battery cells 20 from interference and improving the safety of the battery pack.

[0060] The battery pack provided by this utility model has a first partition 30 between the liquid cooling plate 11 and the battery cell 20. Each first partition 30 has multiple isolation parts 31. The isolation parts 31 and the first explosion-proof valve 21 are arranged opposite each other in the third direction Z. Each isolation part 31 is corresponding to a vent hole 111. When a battery cell 20 experiences thermal runaway, the ejected material is ejected from the first explosion-proof valve 21 of the battery cell 20 under high pressure and breaks through the corresponding isolation part 31. After passing through the corresponding vent hole 111, the ejected material enters the first exhaust channel 102. After the ejected material splashes and spreads in the first exhaust channel 102, its temperature and pressure will decrease. At the same time, since the first explosion-proof valves 21 of other normal battery cells 20 are all provided with corresponding isolation parts 31 for protection, the ejected material is prevented from interfering with other normal battery cells 20, thus improving the safety of the battery pack.

[0061] Furthermore, by providing adhesive-limiting strips 40 on both sides of the first partition 30 in the second direction Y, the adhesive-limiting strips 40 first block the adhesive from entering the area between the adhesive-limiting strips 40 and the first partition 30, and then the tight fit between the first partition 30 and the liquid cooling plate 11 further blocks the adhesive from entering the gap between the first partition 30 and the liquid cooling plate 11, thereby preventing the adhesive from entering the first exhaust channel 102 and preventing the adhesive from clogging the first exhaust channel 102.

[0062] Furthermore, the first spacer 30 can be made of mica sheet or microcellular polypropylene foam (MPP).

[0063] Furthermore, the adhesive strip 40 can be made of mica sheet material.

[0064] In some embodiments, see Figure 2 As shown, the isolation section 31 includes a first connecting section 311, an opening section 312, and a plurality of ribs 313; the opening section 312 and the first explosion-proof valve 21 are arranged opposite each other along the third direction Z; the first connecting section 311 is arranged around the outer periphery of the opening section 312, and the first connecting section 311 and the opening section 312 are spaced apart, and the ribs 313 are connected between the first connecting section 311 and the opening section 312; the first connecting section 311 abuts against the liquid cooling plate 11.

[0065] The first partition 30 also includes a plurality of second connecting portions 32, which are connected between the first connecting portions 311 of two adjacent partition portions 31.

[0066] In this embodiment, the opening portion 312 is connected to the first connecting portion 311 by several ribs 313. When a certain cell 20 experiences thermal runaway, the ejected material is ejected from the first explosion-proof valve 21 of the cell 20 under high pressure and impacts the opening portion 312 of the corresponding isolation portion 31, forcing the ribs 313 to break. This causes the opening portion 312 to fold open from the first connecting portion 311, allowing the ejected material to pass through the corresponding exhaust hole 111 and enter the first exhaust channel 102. The ribs 313 of the isolation portions 31 corresponding to other normal cell 20 remain connected, preventing the ejected material from interfering with other normal cell 20 and improving the safety of the battery pack. The second connecting portion 32 connects multiple isolation portions 31, so that a single first spacer 30 can correspond to a row of exhaust holes 111. During assembly, only one isolation portion 31 needs to be aligned, eliminating the need for multiple alignments and improving the assembly accuracy and efficiency of the battery pack.

[0067] Furthermore, the second connecting part 32 is integrally formed with the first connecting part 311, the opening part 312 and several ribs 313.

[0068] In some embodiments, please combine Figure 1 and Figure 3 As shown, the adhesive limiting strip 40 is spaced apart from the first partition 30, and the adhesive limiting strip 40, together with the first connecting part 311 and the second connecting part 32, forms the adhesive blocking area 401; the adhesive limiting strip 40 is adapted to prevent the glue in the glue filling area 402 from entering the adhesive blocking area 401.

[0069] In this embodiment, by providing adhesive limiting strips 40 on both sides of the first partition 30 in the second direction Y, the adhesive in the filling area 402 is prevented from entering the adhesive blocking area 401, thereby controlling the amount of adhesive and the thickness of the adhesive layer in the filling area 402 and the adhesive blocking area 401. This not only prevents adhesive overflow in the adhesive blocking area 401 and prevents adhesive from entering the first venting channel 102, but also makes the adhesive layer thickness between the battery cell 20 and the liquid cooling plate 11 more uniform, ensuring the reliability and stability of the bonding between the battery cell 20 and the liquid cooling plate 11.

[0070] Further, please see Figure 7 As shown, the liquid cooling plate 11 has a cooling channel 112, which is independently set with the first exhaust channel 102, and the cooling channel 112 is suitable for the flow of cooling medium.

[0071] Further, please see Figure 10 As shown, a thermally conductive adhesive layer 50 is formed in the adhesive filling area 402 by filling with adhesive. The thermally conductive adhesive layer 50 is used to bond the battery cell 20 to the liquid cooling plate 11.

[0072] In some embodiments, see Figure 2 As shown, the first connecting part 311 has a circular ring structure; please refer to it together. Figure 1 and Figure 8 As shown, along the third direction Z, the projection of the first connecting part 311 on the liquid cooling plate 11 is located in the projection of the cell 20 on the liquid cooling plate 11, thereby ensuring that the cell 20 abuts against the first connecting part 311 along the third direction Z, so that the first spacer 30 and the liquid cooling plate 11 are tightly fitted, further preventing glue from entering the gap between the first spacer 30 and the liquid cooling plate 11, thereby preventing glue from entering the first exhaust channel 102 and preventing glue from clogging the first exhaust channel 102.

[0073] In some embodiments, see Figure 2As shown, along the second direction Y, the second connecting portion 32 has a width dimension D2, and the first connecting portion 311 has a width dimension D1, with D2 < D1. Along the third direction Z, the projections of the second connecting portion 32 and the battery cell 20 onto the liquid cooling plate 11 at least partially overlap, thereby increasing the bonding area between the battery cell 20 and the liquid cooling plate 11, improving the bonding strength between the battery cell 20 and the liquid cooling plate 11, and allowing the battery cell 20 to press against the second connecting portion 32, preventing misalignment between the first explosion-proof valve 21 and the opening portion 312 and the vent 111. In some embodiments, please refer to... Figure 5 As shown, the adhesive strip 40 is disposed to fit the outer edge of the first connecting part 311 and the second connecting part 32.

[0074] In this embodiment, by providing adhesive-limiting strips 40 on both sides of the first partition 30 in the second direction Y, and by providing adhesive-limiting strips 40 that are attached to the outer edges of the first connecting part 311 and the second connecting part 32, the adhesive-limiting strips 40 prevent glue from entering the gap between the first partition 30 and the liquid cooling plate 11, thereby preventing glue from entering the first exhaust channel 102 and preventing glue from clogging the first exhaust channel 102.

[0075] In some embodiments, see Figure 8 As shown, the battery pack also includes a second separator 60, which is made of high-temperature resistant and insulating material. The second separator 60 is attached to the side of the bottom protective plate 13 facing the liquid cooling plate 11 in the third direction Z.

[0076] The second partition 60 and the vent 111 are positioned opposite each other along the third direction Z.

[0077] In this embodiment, a second partition 60 is provided in the first exhaust channel 102. The second partition 60 and the exhaust hole 111 are arranged opposite each other along the third direction Z. When a certain battery cell 20 experiences thermal runaway, the ejected material is ejected from the first explosion-proof valve 21 of the battery cell 20 under high pressure and enters the first exhaust channel 102 through the corresponding exhaust hole 111. Due to the blocking effect of the second partition 60, the heat of the ejected material is effectively prevented from being transferred to the bottom protection plate 13 and other components, which effectively reduces the risk of fire. At the same time, through the insulation effect of the second partition 60, short circuits caused under thermal runaway conditions are effectively prevented, ensuring the electrical safety of the battery pack.

[0078] Furthermore, the second spacer 60 can be a mica sheet.

[0079] In some embodiments, please combine Figure 7 and Figure 8 As shown, the battery pack also includes a spring clip bracket 70, which is supported between the liquid cooling plate 11 and the bottom protective plate 13. The spring clip bracket 70 is disposed on at least one side of the second spacer 60 along the second direction Y.

[0080] In this embodiment, by supporting the spring clip bracket 70 between the liquid cooling plate 11 and the bottom protective plate 13, the collapse between the liquid cooling plate 11 and the bottom protective plate 13 is avoided, thereby ensuring the unobstructed flow of the first exhaust channel 102.

[0081] In some embodiments, see Figure 7 As shown, the frame 12 has an air outlet 1202 and a second exhaust channel 103, and the air outlet 1202 is connected to the first exhaust channel 102 through the second exhaust channel 103.

[0082] A second explosion-proof valve 121 is also provided on the frame 12, and the second explosion-proof valve 121 is located in the vent 1202.

[0083] This design allows for the timely discharge of thermal runaway gases from the battery pack, and the cooling of the diffused gas in the second exhaust channel 103 via the frame 12 reduces heat accumulation, prevents excessive pressure inside the battery pack, and lowers the risk of battery pack explosion. The second explosion-proof valve 121 not only discharges thermal runaway gases from the battery pack in a timely manner but also prevents external moisture and dust from entering the battery pack, which helps extend the battery pack's service life.

[0084] According to an embodiment of the present invention, another aspect provides an electrical device, including: a device body, and a battery pack as described above.

[0085] In this embodiment, the electrical equipment uses the aforementioned battery pack to prevent the ejected substances from the thermally runaway cell 20 from interfering with other normal cell 20s, thus improving the safety of the battery pack. In addition, by setting adhesive-limiting strips 40 on both sides of the first spacer 30 in the second direction Y, the adhesive-limiting strips 40 first block the adhesive from entering the area between the adhesive-limiting strips 40 and the first spacer 30, and then the tight fit between the first spacer 30 and the liquid cooling plate 11 further blocks the adhesive from entering the gap between the first spacer 30 and the liquid cooling plate 11, thereby preventing the adhesive from entering the first venting channel 102 and preventing the adhesive from clogging the first venting channel 102.

[0086] Although embodiments of the present invention 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 the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack having intersecting first directions (X), second directions (Y), and a third direction (Z), characterized in that, include: The enclosure (10), multiple battery cells (20), the first separator (30), and the adhesive strip (40) are all included. The housing (10) includes a liquid cooling plate (11), a frame (12), a bottom protective plate (13), and a cover plate (14). The frame (12) has two opposing openings (1201) along the third direction (Z). The cover plate (14) and the bottom protective plate (13) respectively cover one of the openings (1201) and are arranged opposite to each other. The cover plate (14), the frame (12), and the bottom protective plate (13) together enclose a receiving cavity. The liquid cooling plate (11) is disposed in the receiving cavity and divides the receiving cavity into an installation space (101) and a first exhaust channel (102). The liquid cooling plate (11) has a plurality of exhaust holes (111) arranged at intervals along the first direction (X) so that the installation space (101) and the first exhaust channel (102) are connected. Multiple battery cells (20) are arranged along the first direction (X) and built into the installation space (101); a first explosion-proof valve (21) is provided on the side of each battery cell (20) facing the liquid cooling plate (11) along the third direction (Z); multiple first explosion-proof valves (21) and multiple exhaust holes (111) are arranged opposite to each other along the third direction (Z); The first partition (30) is disposed between the liquid cooling plate (11) and the battery cell (20). The first partition (30) has a plurality of isolation parts (31). The plurality of isolation parts (31) are arranged sequentially along the first direction (X). The plurality of isolation parts (31) and the plurality of first explosion-proof valves (21) are arranged opposite to each other along the third direction (Z). The isolation parts (31) cover the exhaust port (111). The adhesive limiting strip (40) is disposed on the side of the liquid cooling plate (11) facing the cover plate (14) along the third direction (Z), and located on opposite sides of the first partition (30) along the second direction (Y); the adhesive limiting strip (40) has an adhesive filling area (402) on the side away from the first partition (30) along the second direction (Y), the adhesive filling area (402) being adapted to fill adhesive and bond the battery cell (20) and the liquid cooling plate (11); the adhesive limiting strip (40) extends along the first direction (X) and is used to block the flow of adhesive from the adhesive filling area (402) to the first partition (30).

2. The battery pack according to claim 1, characterized in that, The isolation section (31) includes a first connecting section (311), an opening section (312), and a plurality of ribs (313); the opening section (312) is disposed opposite to the first explosion-proof valve (21) in a third direction (Z); the first connecting section (311) is disposed around the outer periphery of the opening section (312), and the first connecting section (311) and the opening section (312) are spaced apart; the ribs (313) are connected between the first connecting section (311) and the opening section (312); the first connecting section (311) abuts against the liquid cooling plate (11); The first partition (30) further includes a plurality of second connecting portions (32), which are connected between the first connecting portions (311) of two adjacent partition portions (31).

3. The battery pack according to claim 2, characterized in that, The adhesive limiting strip (40) is spaced apart from the first partition (30), and the adhesive limiting strip (40), together with the first connecting part (311) and the second connecting part (32), forms an adhesive blocking area (401); the adhesive limiting strip (40) is adapted to prevent the glue in the glue filling area (402) from entering the adhesive blocking area (401).

4. The battery pack according to claim 3, characterized in that, The first connecting part (311) is a circular ring structure; along the third direction (Z), the projection of the first connecting part (311) on the liquid cooling plate (11) is located in the projection of the battery cell (20) on the liquid cooling plate (11).

5. The battery pack according to claim 4, characterized in that, Along the second direction (Y), the second connecting portion (32) has a width dimension D2, the first connecting portion (311) has a width dimension D1, and D2 < D1.

6. The battery pack according to claim 2, characterized in that, The adhesive strip (40) is disposed in contact with the outer edges of the first connecting part (311) and the second connecting part (32).

7. The battery pack according to claim 1, characterized in that, The battery pack also includes a second separator (60), which is attached to the bottom protective plate (13) on the side facing the liquid cooling plate (11) along the third direction (Z); The second partition (60) and the exhaust port (111) are arranged opposite each other along the third direction (Z).

8. The battery pack according to claim 7, characterized in that, The battery pack also includes a spring clip bracket (70), which is supported between the liquid cooling plate (11) and the bottom protective plate (13). The spring clip bracket (70) is disposed on at least one side of the second partition (60) along the second direction (Y).

9. The battery pack according to any one of claims 1-8, characterized in that, The frame (12) has an air outlet (1202) and a second exhaust channel (103), and the air outlet (1202) is connected to the first exhaust channel (102) through the second exhaust channel (103); A second explosion-proof valve (121) is also provided on the frame (12), and the second explosion-proof valve (121) is provided in the vent (1202).

10. An electrical appliance, characterized in that, include: The device body, and the battery pack as described in any one of claims 1 to 9 above.

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