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 has a first direction and a second direction which are intersected, and the battery pack comprises a box body; the box cover is connected with the box body and defines a containing cavity; the plurality of single batteries are arranged in the accommodating cavity along the first direction; each single battery comprises a pole core, a cover plate, a first concave part and an anti-explosion valve assembly; the anti-explosion valve assembly is arranged on the cover plate; the first concave part is arranged on one side, deviating from the pole core, of the cover plate; the first concave parts of the plurality of battery monomers are communicated along a first direction to form a first channel; at least part of the supporting part is embedded into the first channel; the supporting part is provided with an exhaust channel, and when the anti-explosion valve assembly exhausts air, the exhaust channel communicates with the anti-explosion valve assembly. According to the battery pack and the electric equipment, the air exhaust space of the air exhaust channel is increased, so that the smoothness of air flow is improved, and the safety performance of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack and electrical equipment. Background Art

[0002] At present, the explosion-proof valve of the square battery is arranged in the middle area of ​​the positive and negative poles of the cover. When the internal pressure of the battery cell is too high or even severe thermal runaway occurs, the explosion-proof valve will open. However, the exhaust of the explosion-proof valve is not smooth, causing the high-temperature electrolyte to be directly sprayed to the outside of the battery cell, posing a greater threat to the safety of drivers and passengers.

[0003] However, without increasing the internal space, the exhaust space of the exhaust channel is small and the gas flow is poor, which can easily cause safety problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a battery pack and electrical equipment, increase the exhaust space of the exhaust channel, improve the smoothness of gas flow, and improve the safety performance of the battery pack.

[0005] In order to achieve the above object, the present invention provides a battery pack, wherein the battery pack has a first direction, a second direction, and a third direction intersecting in pairs, including:

[0006] Box;

[0007] A box cover, the box cover is connected to the box body and encloses the box body to form a receiving cavity;

[0008] A plurality of single cells are arranged in the accommodating cavity along a first direction; the single cells include: a pole core, a cover plate, and an explosion-proof valve assembly; the explosion-proof valve assembly is disposed on the cover plate; a first recess is disposed on a side of the cover plate facing away from the pole core; the first recesses of the plurality of single cells are connected along the first direction to form a first channel;

[0009] The support portion includes a support plate and a second protrusion, wherein the support plate is connected between the cover plate and the box cover, the second protrusion is connected to a side of the support plate close to the cover plate and is at least partially embedded in the first channel, and at least one of the support plate and the second protrusion defines an exhaust channel, and the explosion-proof valve assembly is opposite to the exhaust channel so that the gas discharged by the explosion-proof valve assembly enters the exhaust channel.

[0010] Optionally, the support plate or the second raised portion is provided with an exhaust hole opposite to the explosion-proof valve assembly, the exhaust channel is defined in the second raised portion, and the exhaust hole is communicated with the exhaust channel.

[0011] Optionally, multiple single batteries are arranged in the accommodating cavity along the second direction; there are multiple second protrusions; multiple second protrusions are arranged at intervals along the second direction on the side of the support plate away from the box cover; and multiple second protrusions are respectively embedded in multiple first recesses arranged at intervals along the second direction.

[0012] Optionally, the explosion-proof valve assembly includes: a first explosion-proof valve and a second explosion-proof valve; the first explosion-proof valve and the second explosion-proof valve are respectively located on both sides of the first recessed portion in the second direction, the support plate is provided with a plurality of exhaust holes, and the first explosion-proof valve and the second explosion-proof valve are respectively arranged corresponding to the exhaust holes in the third direction.

[0013] Optionally, the explosion-proof valve assembly includes: a third explosion-proof valve; the exhaust hole is opened in the second raised portion, and the third explosion-proof valve is arranged in the first recessed portion; the exhaust hole is opened on the second raised portion and at a position corresponding to the third explosion-proof valve; the exhaust channel is arranged on the second raised portion.

[0014] Optionally, the single cell includes a shell and a first protrusion, the cover plate is arranged on the shell; the pole core is arranged in the shell; the first protrusion is arranged on the side of the cover plate facing the pole core, and the first protrusion is in contact with the pole core so that a gap is formed between the cover plate and the pole core in the third direction.

[0015] Optionally, the cover plate extends along the second direction; along the second direction, the first protrusion and the first recessed portion are arranged in the middle position of the cover plate to separate the gap into a first sub-gap and a second sub-gap, and the first sub-gap and the second sub-gap are respectively located on both sides of the first protrusion in the second direction.

[0016] Optionally, the first protrusion has a supporting side facing the pole core; the pole core has a contact side facing the first protrusion; the supporting side is constructed as a plane; and the contact side abuts against the supporting side.

[0017] Optionally, the first recess has a first side surface, a second side surface and a third side surface; the first side surface, the second side surface and the third side surface are connected along a second direction; the angle between the first side surface and the second side surface is an obtuse angle, and / or the angle between the third side surface and the second side surface is an obtuse angle.

[0018] Optionally, the box body has a top wall, and the single battery is adhered to the top wall.

[0019] Optionally, the support plate and the cover plate define the exhaust channel.

[0020] Optionally, the single cell battery further includes a pole and a connecting plate, the cover plate is provided with a pole mounting hole, the pole is passed through the pole mounting hole, the pole and the explosion-proof valve assembly are respectively arranged corresponding to the gap in the third direction Z, the connecting plate is installed in the gap, and the connecting plate is respectively connected to the pole and the pole core.

[0021] An electrical device comprises the battery pack.

[0022] Optionally, a vehicle body is included, and the explosion-proof valve assembly is located on a side away from the vehicle body, or the box cover is located on a side away from the vehicle body.

[0023] Compared with the prior art, the battery pack and electrical equipment of the present invention have the following advantages: the first recessed portions of multiple battery cells are connected along a first direction to form a first channel, and the support portion within the housing is at least partially embedded in the first channel. The support portion supports the first recessed portion, thereby limiting the position of the housing and the battery cells, improving the assembly stability of the battery cells within the housing, reducing the risk of battery displacement or damage due to vibration or impact, and improving the overall structural stability of the battery pack. Furthermore, the support portion has an exhaust channel formed by the first recessed portion, and the support portion is at least partially embedded in the first channel, so as to fully utilize the space corresponding to the first recessed portion on the cover plate of the battery cells as exhaust space, thereby providing more air flow space, improving the smoothness of gas flow, effectively reducing the probability of heat spread, and improving the safety performance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a single cell according to an embodiment of the present utility model;

[0025] Figure 2 is a cross-sectional view of a single cell in an embodiment of the present utility model;

[0026] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the pole core in the embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the disassembled structure of the battery pack in an embodiment of the present utility model;

[0030] Figure 7This is a schematic diagram of the assembly structure of a single battery and a support portion in one embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the disassembled structure of a single battery and a support portion in one embodiment of the present utility model;

[0032] Figure 9 This is a structural diagram of a support portion in one embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the assembly structure of multiple single cells in an embodiment of the present utility model;

[0034] Figure 11 It is a schematic diagram of the disassembled structure of a single battery and a supporting part in another embodiment of the present invention.

[0035] In the figure, 1. box body; 11. accommodating cavity; 12. top wall; 2. box cover; 3. single battery; 31. shell; 32. pole core; 321. contact side; 33. cover plate; 34. first protrusion; 341. supporting side; 35. first recess; 351. first side; 352. second side; 353. third side; 36. explosion-proof valve assembly; 361. first explosion-proof valve; 362. second explosion-proof valve; 363. third explosion-proof valve; 4. gap; 41. first sub-gap; 42. second sub-gap; 5. support portion; 51. exhaust channel; 52. exhaust hole; 521. first sub-hole; 522. second sub-hole; 523. third sub-hole; 53. support plate; 54. second protrusion; 6. first channel; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0036] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] First, it should be noted that the directions such as top, bottom, upward, and downward mentioned in this document are defined relative to the directions in the respective drawings. They are relative concepts and can therefore vary depending on the position and usage conditions. Therefore, these or other directions should not be understood as limiting terms.

[0038] It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality.

[0039] In addition, it should be pointed out that any single technical feature described or implied in the embodiments of this document, or any single technical feature shown or implied in the accompanying drawings, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present invention that are not directly mentioned in this document.

[0040] It should also be understood that, while the terms "first," "second," and the like are used herein to describe various types of information, such information should not be limited to these terms; these terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first information" without departing from the scope of the present invention.

[0041] In this application, the term "parallel" includes not only absolute parallelism but also the generally recognized parallelism in engineering practice, such as "parallel" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°. At the same time, "perpendicular" also includes not only absolute perpendicularity but also the generally recognized perpendicularity in engineering practice, such as "perpendicular" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles include not only absolute equality but also the generally recognized equality in engineering practice, which may include a certain error, such as a tolerance range of -1% to 1%.

[0042] It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

[0043] In the following embodiments, a first direction, a second direction, and a third direction intersecting each other are introduced, wherein the first direction is parallel to the length direction of the battery cell in this embodiment, the second direction is parallel to the thickness direction of the battery cell in this embodiment, and the third direction is parallel to the height direction of the battery cell in this embodiment.

[0044] like Figure 1 、 Figures 6 to 9 as well as Figure 11 As shown, a battery pack of a preferred embodiment of the present utility model has a first direction X, a second direction Y and a third direction Z intersecting in pairs, including:

[0045] like Figure 6 As shown, box 1;

[0046] like Figure 6 As shown, the box cover 2 is connected to the box body 1 and encloses a receiving cavity 11; wherein, the box cover 2 can be on the side close to the vehicle body or on the side away from the vehicle body.

[0047] like Figure 6 As shown, multiple single cells 3 are arranged in the accommodating cavity 11 along a first direction X. The single cells 3 include: a pole core 32, a cover plate 33, and an explosion-proof valve assembly 36. The explosion-proof valve assembly 36 is disposed on the cover plate 33. A first recess 35 is disposed on the side of the cover plate 33 facing away from the pole core 32. The first recesses 35 of the multiple single cells 3 are connected along the first direction X to form a first channel 6.

[0048] like Figures 6 to 9 as well as Figure 11 As shown, the support portion 5 includes a support plate 53 and a second protrusion 54. The support plate 53 is connected between the cover plate 33 and the box cover 2. The second protrusion 54 is connected to the side of the support plate 53 that is higher than the cover plate 33 and is at least partially embedded in the first channel 6. The second protrusion 54 abuts the bottom wall of the first recessed portion 35. At least one of the support plate 53 and the second protrusion 54 defines an exhaust channel 51. The explosion-proof valve assembly 36 is opposite to the exhaust channel 51 so that the gas discharged from the explosion-proof valve assembly 36 enters the exhaust channel 51. The explosion-proof valve assembly 51 can be arranged toward the vehicle body or away from the vehicle body. When the explosion-proof valve assembly 51 is arranged away from the vehicle body, it is safer to use.

[0049] Based on the above structure, the first recesses 35 of the multiple battery cells in the present invention are connected along the first direction X to form a first channel 6. The support portion 5 within the housing 1 is at least partially embedded in the first channel 6. The support portion 5 supports the first recess 35, thereby limiting the position of the housing 1 and the battery cells 3. This improves the assembly stability of the battery cells 3 within the housing 1, reduces the risk of battery displacement or damage due to vibration or impact, and enhances the overall structural stability of the battery pack. Furthermore, the support portion 5 includes an exhaust channel 51. The first channel 6 is formed by the first recess 35, and the support portion 5 is at least partially embedded in the first channel 6. This fully utilizes the space corresponding to the first recess on the cover of the battery cell as exhaust space, providing ample air flow and improving the smooth flow of gas. This effectively avoids safety issues caused by excessive internal pressure in the battery, thereby enhancing the safety performance of the battery pack.

[0050] Further, such as Figures 6 to 9 as well as Figure 11As shown, the second raised portion 54 is connected to a support plate 53 on at least one side in the second direction Y. The support plate 53 or the second raised portion 54 is provided with a vent hole 52 opposite the explosion-proof valve assembly 36. The exhaust channel 51 is defined within the second raised portion 54, and the vent hole 52 communicates with the exhaust channel 51. The support plate 53 is connected to the cover 2 to secure the support portion 5 to the housing 1. The second raised portion 54 is embedded in the first recessed portion 35 to position the individual cells 3 and improve the assembly stability of the individual cells 3 within the housing 1. Furthermore, the second raised portion 54 embedded in the first recessed portion 35 increases the exhaust space within the housing 1, improving the smooth flow of gas. The support plate 53 or the second raised portion 54 is provided with a vent hole 52, which communicates with the exhaust channel 51. This allows gases generated within the battery to enter the exhaust channel 51 through the vent hole 52 for discharge, effectively preventing safety issues caused by excessive internal pressure in the battery and improving the safety performance of the battery pack.

[0051] In a possible embodiment, the exhaust hole 52 is a blind hole. When the explosion-proof valve assembly 36 explodes, the blind hole can be opened to exhaust gas, thereby preventing the hot air flow in the exhaust channel 51 from affecting the non-exploded single battery 3, thereby reducing the probability of heat spread.

[0052] In a possible embodiment, the exhaust hole 52 is covered with a protective patch. When the explosion-proof valve assembly 36 explodes, the protective patch can be opened to exhaust gas, thereby preventing the hot air flow in the exhaust channel 51 from affecting the non-exploded single battery 3, thereby reducing the probability of heat spread.

[0053] In one possible embodiment, Figure 8 as well as Figure 11 As shown, the first recessed portion 35 penetrates the cover plate 33 in the first direction X, and the shape of the second protrusion 54 corresponds to the shape of the first recessed portion 35. Since the first recessed portion 35 penetrates the cover plate 33, a larger exhaust space is provided in the box body 1, improving the smooth flow of gas. Of course, in another possible embodiment, the first recessed portion 35 does not penetrate the cover plate 33 in the first direction X. The first recessed portion 35 defines a cavity, and the shape of the second protrusion 54 corresponds to the shape of the cavity. The second protrusion 54 is inserted into the cavity. Since the first recessed portion 35 does not penetrate the cover plate 33 in the first direction X, it helps to improve the strength of the cover plate 33 in the third direction Z and prevent the cover plate 33 from deformation.

[0054] Further, such as Figures 6 to 9 as well as Figure 11As shown, multiple battery cells 3 are arranged in the accommodating cavity 11 along the second direction Y; there are multiple second protrusions 54; the multiple second protrusions 54 are spaced apart along the second direction Y on the side of the support plate 53 facing away from the case cover 2; and the multiple second protrusions 54 are respectively embedded in the multiple first recesses 35 spaced apart along the second direction Y. Multiple battery cells 3 are placed in the accommodating cavity 11 of the case 1, and the multiple first recesses 35 are respectively in contact with the multiple second protrusions 54 in the second direction Y. The multiple second protrusions 54 support the first recesses 35, thereby improving the support stability of the multiple battery cells 3.

[0055] In one possible embodiment, Figures 6 to 9 as well as Figure 11 As shown, the second protrusion 54 has a raised support surface facing the first recessed portion 35; the first recessed portion 35 has a contact support surface facing the first recessed portion 35; the raised support surface and the contact support surface are each constructed as a plane; the raised support surface and the contact support surface abut against each other. When the raised support surface and the contact support surface are both planes, the contact area between the raised support surface and the contact support surface is increased, thereby improving the installation stability of the single battery 3 within the casing 1. Of course, the raised support surface and the contact support surface can be fixed by gluing, further improving the installation stability of the single battery 3 within the casing.

[0056] Further, such as Figure 10 as well as Figure 11 As shown, the explosion-proof valve assembly 36 includes a first explosion-proof valve 361 and a second explosion-proof valve 362. The first explosion-proof valve 361 and the second explosion-proof valve 362 are located on either side of the first recessed portion 35 in the second direction Y. The support plate 53 is provided with multiple exhaust holes 52. The first explosion-proof valve 361 and the second explosion-proof valve 362 are respectively arranged corresponding to the exhaust holes 52 in the third direction Z. The first explosion-proof valve 361 and the second explosion-proof valve 362 are provided on either side of the first recessed portion 35 in the second direction Y. During the charging and discharging process, gas is generated within the battery pack. The positions of the first explosion-proof valve 361 and the second explosion-proof valve 362 are respectively arranged corresponding to the exhaust holes 52 on the support plate 53, shortening the exhaust distance. When the internal pressure of the battery suddenly increases, the first explosion-proof valve 361 and the second explosion-proof valve 362 are automatically triggered and rupture through the weak point to open the valve, allowing the high-pressure gas to be discharged from the explosion-proof valve assembly 36 and then dissipated through the exhaust holes 52 to the exhaust channel 51. This effectively protects the battery pack and prevents safety accidents caused by excessive internal pressure.

[0057] Further, such as Figures 7 to 9As shown, the explosion-proof valve assembly 36 includes: a third explosion-proof valve 363; a vent 52 provided in the second raised portion 54; the third explosion-proof valve 363 is disposed in the first recessed portion 35; the vent 52 is provided on the second raised portion 54 at a position corresponding to the third explosion-proof valve 363; and an exhaust channel 51 is provided in the second raised portion 54. The first recessed portion 35 is provided with the third explosion-proof valve 363, and the vent 52 is provided in the second raised portion 54. The position of the third explosion-proof valve 363 corresponds to the position of the vent 52, providing more exhaust space for the exhaust of the third explosion-proof valve 363. At the same time, the vent 52 is connected to the exhaust channel 51, shortening the exhaust path and improving exhaust efficiency, effectively protecting the battery pack and preventing safety accidents caused by excessive internal pressure.

[0058] In one possible embodiment, a first explosion-proof valve 361, a second explosion-proof valve 362 and a third explosion-proof valve 363 are respectively provided on the cover plate 33. Explosion-proof valves are respectively provided at multiple positions of the cover plate 33, which can accelerate the discharge of gas inside the battery, improve the exhaust efficiency, effectively protect the battery pack, and prevent safety accidents caused by excessive internal pressure.

[0059] Further, such as Figures 2 to 4 As shown, the single battery cell 3 includes a housing 31 and a first protrusion 34. The cover plate 33 is disposed on the housing 31. The pole core 32 is disposed within the housing 31. The first protrusion 34 is disposed on the side of the cover plate 33 facing the pole core 32. The first protrusion 34 abuts the pole core 32, forming a gap 4 between the cover plate 33 and the pole core 32 in the third direction Z. The first protrusion 34 supports the pole core 32, forming the gap 4 between the cover plate 33 and the pole core 32. The gap 4 is located on both sides of the second protrusion 54 in the second direction Y, providing more space for gas flow, preventing the pole core 32 from blocking the explosion-proof valve assembly 36 and causing poor exhaust, and promoting smoother air circulation within the housing 31.

[0060] Further, such as Figures 2 to 4As shown, the cover plate 33 extends along the second direction Y. Along the second direction Y, a first protrusion 34 and a first depression 35 are provided in the middle of the cover plate 33 to divide the gap 4 into a first sub-gap 41 and a second sub-gap 42. The first sub-gap 41 and the second sub-gap 42 are located on either side of the first protrusion 34 in the second direction Y. The first sub-gap 41 and the second sub-gap 42 provide flow spaces for gas within the housing 31. The position of the first sub-gap 41 corresponds to the position of the first explosion-proof valve 361, and the second sub-gap 42 corresponds to the position of the second explosion-proof valve 362. When the pressure in the electrode core 32 is too high and seriously out of control, the gas generated by the reaction between the electrode core 32 and the electrolyte can flow through the first and second sub-gap 41 and 42 to the first and second explosion-proof valves 361 and 362 for release, and then flow through the exhaust holes 52 to the exhaust channel 51 for discharge, thereby reducing the risk of safety accidents such as explosion of the single battery cell 3.

[0061] Further, such as Figure 1 、 Figure 2 as well as Figures 4 and 5 As shown, the first protrusion 34 has a supporting side surface 341 facing the pole core 32; the pole core 32 has a contact side surface 321 facing the first protrusion 34; the supporting side surface 341 is configured as a plane; and the contact side surface 321 abuts against the supporting side surface 341. When the supporting side surface 341 is a plane, the contact area between the contact side surface 321 and the supporting side surface 341 is increased, thereby improving the installation stability of the pole core 32 in the housing 31.

[0062] Further, such as Figures 3 and 4 As shown, the first recessed portion 35 has a first side surface 351, a second side surface 352, and a third side surface 353; the first side surface 351, the second side surface 352, and the third side surface 353 are connected along the second direction Y; the angle between the first side surface 351 and the second side surface 352 is an obtuse angle, which helps guide the gas within the housing 31 toward the first sub-gap 41, improving gas flow. Alternatively, the angle between the third side surface 353 and the second side surface 352 is an obtuse angle, which helps guide the gas within the housing 31 toward the second sub-gap 42, improving gas flow. The obtuse angles formed by the first side surface 351 and the second side surface 352, as well as the obtuse angles formed by the third side surface 353 and the second side surface 352, help guide the gas within the housing 31 toward the first sub-gap 41 and the second sub-gap 42, and discharge through the first explosion-proof valve 361 and the second explosion-proof valve 362, improving gas flow.

[0063] Furthermore, the box body 1 has a top wall 12, to which the single cells 3 are bonded. The box cover 2 and the top wall 12 are arranged relative to each other in the third direction Z. The single cells 3 are bonded to the top wall 12 to improve the connection stability of the single cells 3 within the box body 1. At the same time, the second protrusions 54 support the first protrusions 34, thereby positioning the single cells 3 in the assembly position within the box body 1.

[0064] Furthermore, the support plate 53 and the cover plate 33 enclose and define an exhaust passage 51. The positions of the first explosion-proof valve 361 and the second explosion-proof valve 362 correspond to the positions of the exhaust passage 51. When the pressure inside the battery suddenly increases, the first explosion-proof valve 361 and the second explosion-proof valve 362 are automatically triggered and open through the weak points, allowing the high-pressure gas to be discharged from the first explosion-proof valve 361 and the second explosion-proof valve 362 and then through the exhaust passage 51, effectively protecting the battery pack and preventing safety accidents caused by excessive internal pressure.

[0065] Furthermore, the single cell 3 includes a pole and a connecting piece. The cover plate 33 is provided with a pole mounting hole, through which the pole is inserted. The pole and the explosion-proof valve assembly 36 are respectively arranged in positions corresponding to the gap 4 in the third direction Z. The connecting piece is installed in the gap 4 and is respectively connected to the pole and the pole core 32. The gap 4 provides more space for gas flow, preventing the pole core 32 from blocking the explosion-proof valve assembly 36 and causing poor exhaust, promoting smoother air circulation within the housing 31, and providing installation space for the connecting piece.

[0066] In one possible embodiment, the electrode includes a first electrode and a second electrode. The first sub-gap 41 and the second sub-gap 42 are respectively installed with a connecting piece. The position of the first electrode in the third direction corresponds to the first sub-gap 41, and the position of the second electrode in the third direction corresponds to the second sub-gap 41. The first electrode is connected to the electrode core via the connecting piece in the first sub-gap 41, and the second electrode is connected to the electrode core via the connecting piece in the second sub-gap 41. The first electrode is a positive electrode and the second electrode is a negative electrode, or the first electrode is a negative electrode and the second electrode is a positive electrode.

[0067] like Figure 6 As shown, the present invention also discloses an electrical device, including a battery pack as in any of the above embodiments.

[0068] In one possible embodiment, the vehicle body is provided, and the explosion-proof valve assembly 36 is located on a side away from the vehicle body, or the box cover 2 is located on a side away from the vehicle body. The battery pack used in this electrical device includes the technical features mentioned in all the above embodiments and can achieve the same technical effects. The specific implementation method is not further described here.

[0069] In summary, the battery pack and electrical device of the present invention form a first channel 6 by connecting the first recessed portions 35 of multiple battery cells along a first direction X. The support portion 5 within the housing 1 is at least partially embedded in the first channel 6. The support portion 5 supports the first recessed portion 35, thereby limiting the position of the housing 1 and the battery cells 3. This improves the assembly stability of the battery cells 3 within the housing 1, reduces the risk of battery displacement or damage due to vibration or impact, and enhances the overall structural stability of the battery pack. Furthermore, the support portion 5 includes an exhaust channel 51. The first channel 6 formed by the first recessed portion 35 and the support portion 5 at least partially embedded in the first channel 6 increase the exhaust space within the housing 1, providing more air flow space and improving the smooth flow of gas. This effectively avoids safety issues caused by excessive internal pressure in the battery and enhances the safety performance of the battery pack.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) intersecting each other, characterized in that: include: Box (1); A box cover (2), the box cover (2) is connected to the box body (1) and encloses the box body to form a receiving cavity (11); A plurality of single cells (3), wherein the plurality of single cells (3) are arranged in the accommodating cavity (11) along the first direction (X); the single cells (3) comprise: a pole core (32), a cover plate (33), and an explosion-proof valve assembly (36); the explosion-proof valve assembly (36) is arranged on the cover plate (33); a first recessed portion (35) is provided on a side of the cover plate (33) facing away from the pole core (32); the first recessed portions (35) of the plurality of single cells (3) are connected along the first direction (X) to form a first channel (6); The support portion (5) comprises a support plate (53) and a second protrusion (54), wherein the support plate (53) is connected between the cover plate (33) and the box cover (2), the second protrusion (54) is connected to a side of the support plate (53) close to the cover plate (33) and is at least partially embedded in the first channel (6), the second protrusion (54) abuts against the bottom wall of the first recessed portion (35), and at least one of the support plate (53) and the second protrusion (54) defines an exhaust channel (51), and the explosion-proof valve assembly (36) is opposite to the exhaust channel (51) so that gas discharged from the explosion-proof valve assembly (36) enters the exhaust channel (51).

2. The battery pack according to claim 1, wherein: The support plate (53) or the second raised portion (54) is provided with an exhaust hole (52) opposite to the explosion-proof valve assembly (36); the exhaust channel (51) is defined within the second raised portion (54); and the exhaust hole (52) is in communication with the exhaust channel (51).

3. The battery pack according to claim 2, wherein: The plurality of single batteries (3) are arranged in the accommodating cavity (11) along the second direction (Y); the number of the second protrusions (54) is plural; the plurality of second protrusions (54) are arranged at intervals along the second direction (Y) on a side of the support plate (53) away from the box cover (2); and the plurality of second protrusions (54) are respectively embedded in the plurality of first recesses (35) arranged at intervals along the second direction (Y).

4. The battery pack according to claim 2, wherein: The explosion-proof valve assembly (36) comprises: a first explosion-proof valve (361) and a second explosion-proof valve (362); the first explosion-proof valve (361) and the second explosion-proof valve (362) are respectively located on both sides of the first recessed portion (35) in the second direction (Y); the support plate (53) is provided with a plurality of exhaust holes (52); the first explosion-proof valve (361) and the second explosion-proof valve (362) are respectively arranged corresponding to the exhaust holes (52) in the third direction (Z).

5. The battery pack according to claim 2, wherein: The explosion-proof valve assembly (36) comprises: a third explosion-proof valve (363); the exhaust hole (52) is provided in the second raised portion (54); the third explosion-proof valve (363) is provided in the first recessed portion (35); the exhaust hole (52) is provided on the second raised portion (54) at a position corresponding to the third explosion-proof valve (363); and the exhaust channel (51) is provided in the second raised portion (54).

6. The battery pack according to claim 1, wherein: The single battery (3) comprises a shell (31) and a first protrusion (34); the cover plate (33) is disposed on the shell (31); the pole core (32) is disposed in the shell (31); the first protrusion (34) is disposed on a side of the cover plate (33) facing the pole core (32); the first protrusion (34) abuts against the pole core (32), so that a gap (4) is formed between the cover plate (33) and the pole core (32) in the third direction (Z).

7. The battery pack according to claim 6, characterized in that: The cover plate (33) extends along the second direction (Y); along the second direction (Y), the first protrusion (34) and the first recess (35) are arranged in a central position of the cover plate (33) to separate the gap (4) into a first sub-gap (41) and a second sub-gap (42), and the first sub-gap (41) and the second sub-gap (42) are respectively located on both sides of the first protrusion (34) in the second direction (Y).

8. The battery pack according to claim 6, wherein: The first protrusion (34) has a supporting side surface (341) facing the pole core (32); the pole core (32) has a contact side surface (321) facing the first protrusion (34); the supporting side surface (341) is constructed as a plane; and the contact side surface (321) abuts against the supporting side surface (341).

9. The battery pack according to claim 1, wherein: The first recessed portion (35) has a first side surface (351), a second side surface (352) and a third side surface (353); the first side surface (351), the second side surface (352) and the third side surface (353) are connected along a second direction (Y); an angle between the first side surface (351) and the second side surface (352) is an obtuse angle, and / or an angle between the third side surface (353) and the second side surface (352) is an obtuse angle.

10. The battery pack according to claim 1, wherein: The box body has a top wall, and the single battery (3) is adhered to the top wall.

11. The battery pack according to claim 2, wherein: The support plate (53) and the cover plate (33) enclose and define the exhaust channel (51).

12. The battery pack according to claim 6, wherein: The single battery (3) further comprises a pole and a connecting piece. The cover plate (33) is provided with a pole mounting hole. The pole is passed through the pole mounting hole. The pole and the explosion-proof valve assembly (36) are respectively arranged corresponding to the gap (4) in the third direction (Z). The connecting piece is installed in the gap (4). The connecting piece is respectively connected to the pole and the pole core (32).

13. An electrical device, characterized in that: A battery pack comprising any one of claims 1 to 12.

14. The electrical equipment according to claim 13, characterized in that: The vehicle body is included, the explosion-proof valve assembly (36) is located on a side away from the vehicle body, or the box cover (2) is located on a side away from the vehicle body.

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