Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, and relates to the technical field of batteries. The battery pack comprises a box body and a power distribution box, the box body is provided with a first containing cavity, the first containing cavity is used for containing a battery cell, the power distribution box comprises a shell and a power distribution device, the shell is located outside the box body, the shell is fixedly connected with the outer wall face of the box body, a second containing cavity is formed in the shell, or the shell and the outer wall face of the box body define the second containing cavity, and the power distribution device is arranged in the second containing cavity. And the power distribution device is accommodated in the second accommodating cavity. According to the battery pack and the electric equipment, the battery cell and the distribution box are separated in two spaces by enabling the battery pack and the electric equipment to meet the structure, so that combustible gas can be prevented from diffusing into the distribution box when the battery cell is subjected to thermal runaway, arc discharge and short circuit of the distribution box are avoided, and the overall safety performance of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] The battery pack distribution box is mainly used for the transmission of electrical signals between the power battery and the electrical equipment on the vehicle. It is usually placed on both sides of the battery pack and outputs power to the vehicle through connectors. In order to improve the space utilization of the battery pack, the distribution box is usually installed inside the battery pack. When the battery pack is subjected to external force and thermal runaway occurs, the battery cell will release a large amount of flammable gas, which will quickly spread to the distribution box, causing the distribution box to arc and short-circuit, thereby accelerating the thermal runaway combustion speed of the battery pack and posing a safety hazard to passengers. Utility Model Content

[0003] The purpose of the present application is to provide a battery pack and electrical equipment to solve the problem of heat diffusion between the distribution box and the battery cells.

[0004] To achieve the purpose of this application, this application provides the following technical solutions:

[0005] In the first aspect, the present application provides a battery pack, comprising: a box body, having a first accommodating cavity, the first accommodating cavity is used to accommodate a battery cell; a distribution box, comprising a shell and a distribution device, the shell is located outside the box body, a second accommodating cavity is arranged inside the shell, or the shell and the outer wall surface of the box body are enclosed to form the second accommodating cavity, the distribution device is accommodated in the second accommodating cavity, and the shell and the outer wall surface of the box body are fixedly connected. The battery cell and the distribution box are separated in two spaces, which is conducive to preventing the combustible gas from diffusing into the distribution box when the battery cell has thermal runaway, thereby avoiding arcing and short circuiting of the distribution box, which is conducive to improving the overall safety performance of the battery pack.

[0006] In one embodiment, the box body includes a first cover body and a second cover body, the first cover body and the second cover body enclose the first accommodating cavity, a groove is provided on the side of the second cover body away from the first cover body, the groove is located at the edge of the second cover body, the distribution box is accommodated in the groove, and the shell is attached to and fixedly connected to the inner wall of the groove. This avoids the entire distribution box protruding from the surface of the battery pack, which is conducive to beautifying the appearance of the battery pack and reducing the overall thickness of the battery pack, thereby facilitating the overall arrangement of the battery pack in the front cabin of the vehicle and improving space utilization.

[0007] In one embodiment, the distribution box further includes a sealing cover, the shell has a first opening, the first opening is located on the side of the shell away from the first cover body, the opening direction of the first opening is parallel to the stacking direction of the first cover body and the second cover body, and the sealing cover is sealed and connected to the edge of the first opening. A closed space is formed in the distribution box, which is beneficial to prevent a large amount of flammable gas discharged to the outside from diffusing into the distribution box when the battery cell is thermally runaway. At the same time, by making the distribution box include a sealing cover, when the distribution box is repaired, the connection between the sealing cover and the shell can be removed to repair or replace the distribution device, which is beneficial to improve the maintenance efficiency of the distribution box.

[0008] In one embodiment, the housing has a second opening, the second opening is arranged opposite to the first opening, and the edge of the second opening is fixedly connected to the bottom wall of the groove. Part of the second cover becomes a part of the distribution box, which is beneficial to reduce the material of the distribution box, reduce the cost of the distribution box, and at the same time help to reduce the weight of the distribution box, thereby reducing the weight of the battery pack.

[0009] In one embodiment, the battery pack further includes a conductive column, a through hole is provided on the bottom wall of the groove, the conductive column passes through the through hole, one end of the conductive column is accommodated in the first accommodating cavity, and the other end of the conductive column is accommodated in the second accommodating cavity, so that the battery cell is electrically connected to the distribution device.

[0010] In one embodiment, the battery pack further comprises an insulating column, which is sleeved on the conductive column and is respectively in contact with the inner wall of the through hole and the conductive column, so as to prevent the second cover from being energized and causing a short circuit or other faults in the battery pack.

[0011] In one embodiment, the insulating column includes an insulating column body and a base, the base is accommodated in the second accommodating cavity, the base is located at one end of the insulating column body, and the base abuts against the bottom wall of the groove. The base limits the position of the insulating column, preventing the insulating column from moving at the inner wall of the through hole, thereby avoiding the formation of an electrical connection gap between the insulating column and the inner wall of the through hole, which is conducive to ensuring the safety of the electrical connection between the battery cell and the power distribution device.

[0012] In one embodiment, the battery pack further includes a sealing ring, the base is provided with a sealing groove, the sealing groove surrounds the insulating column body, the sealing ring is accommodated in the sealing groove, and the sealing ring abuts against the bottom wall of the groove. The sealing ring can seal between the base and the bottom wall of the groove, thereby further sealing the opening of the through hole close to the distribution box.

[0013] In one embodiment, the battery pack further includes a first conductive member and a second conductive member, wherein the first conductive member is accommodated in the first accommodating cavity and is electrically connected to one end of the conductive column, and the second conductive member is accommodated in the second accommodating cavity and is electrically connected to the other end of the conductive column. The arrangement of the battery cells and other structures in the first accommodating cavity is simplified, and the arrangement of the power distribution components in the power distribution box is simplified, while the electrical connection between the battery cells and the power distribution components is achieved.

[0014] In one embodiment, a threaded hole is provided on one side of the first conductive member close to the second accommodating cavity, a threaded column is provided on one side of the second conductive member close to the first accommodating cavity, the conductive column is provided with a connecting hole, the connecting hole penetrates the conductive column along the extension direction of the conductive column, the threaded column passes through the connecting hole and is threadedly connected to the threaded hole, and the threaded column fits the inner wall of the connecting hole. This is conducive to strengthening the sealing performance between the first accommodating cavity and the second accommodating cavity, thereby preventing high-temperature flammable gas from being guided to the distribution box in the thermal runaway state, and playing a role in delaying the thermal runaway of the battery pack.

[0015] In a second aspect, the present application further provides an electrical device, comprising an electrical device and a battery pack as described in any one of the embodiments of the first aspect, wherein the battery pack is electrically connected to the electrical device.

[0016] The battery pack provided by the present application includes a box body and a distribution box, the box body has a first accommodating cavity, the first accommodating cavity is used to accommodate the battery cell, so that the battery cell is sealed and accommodated inside the box body. The distribution box includes a shell and a distribution device, by making the shell outside the box body, the shell and the outer wall of the box body are fixedly connected, so that the box body separates the battery cell and the distribution box into two spaces, that is, the battery cell is isolated from the distribution box. A second accommodating cavity is provided in the shell, or the outer wall of the shell and the box body are enclosed to form a second accommodating cavity, and the distribution device is accommodated in the second accommodating cavity, so that the distribution device and the battery cell are in two spaces. When the distribution box is repaired, there is no need to disassemble the box body, only the shell of the distribution box needs to be opened, which reduces the disassembly cost and time, and improves the maintenance efficiency of the distribution box. In addition, when the battery cell has thermal runaway, the large amount of combustible gas released by the battery cell will not diffuse into the distribution box, thereby avoiding arcing and short circuiting of the distribution box, which plays a role in delaying the thermal runaway of the battery pack, thereby helping to improve the overall safety performance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is an exploded view of a battery pack according to an embodiment;

[0019] Figure 2 is a cross-sectional view and a partial enlarged view of a battery pack according to an embodiment;

[0020] Figure 3 is a partial bottom view of a second cover and a distribution box in one embodiment;

[0021] Figure 4 The present invention is a cross-sectional view of a portion of a second cover, a distribution box, a conductive column, a first conductive member, a second conductive member, an insulating column and a sealing ring according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 10-box body, 11-first accommodating cavity, 12-first cover body, 13-second cover body, 131-groove, 132-through hole;

[0024] 20-distribution box, 21-housing, 211-first opening, 212-second opening, 213-second accommodating cavity, 22-distribution device, 23-sealing cover;

[0025] 30 - conductive column, 31 - connecting hole, 40 - insulating column, 41 - insulating column body, 42 - base, 421 - sealing groove, 50 - sealing ring, 60 - first conductive part, 61 - threaded hole, 70 - second conductive part, 71 - threaded column, 80 - battery cell. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0031] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] The present application embodiment provides a battery pack, see Figure 1 and Figure 2The battery pack includes a box body 10 and a distribution box 20. The box body 10 has a first accommodating cavity 11. The first accommodating cavity 11 is used to accommodate the battery cell 80, so that the battery cell 80 is sealed and accommodated inside the box body 10. The distribution box 20 includes a shell 21 and a distribution device 22. The shell 21 is located outside the box body 10. The shell 21 and the outer wall of the box body 10 are fixedly connected, so that the box body 10 separates the battery cell 80 and the distribution box 20 into two spaces, that is, the battery cell 80 is isolated from the distribution box 20.

[0035] A second accommodating cavity 213 is provided in the shell 21, or the outer wall surface of the shell 21 and the box body 10 encloses the second accommodating cavity 213, and the distribution device 22 is accommodated in the second accommodating cavity 213, so that the distribution device 22 and the battery cell 80 are in two spaces. When the distribution box 20 is repaired, there is no need to disassemble the box body 10, and only the shell 21 of the distribution box 20 needs to be opened, which reduces the disassembly cost and time and improves the maintenance efficiency of the distribution box 20.

[0036] Furthermore, when the battery cell 80 experiences thermal runaway, the battery cell 80 will release a large amount of flammable gas. Since the box body 10 seals the first accommodating cavity 11 and isolates the battery cell 80 from the distribution box 20, the flammable gas released by the battery cell 80 will not diffuse into the distribution box 20, thereby avoiding arcing and short circuit in the distribution box 20, delaying the thermal runaway of the battery pack, which is beneficial to improving the overall safety performance of the battery pack.

[0037] Optionally, the distribution box 20 and the box body 10 are integrated into a whole by laser brazing. The distribution box 20 can be a cast aluminum part, and the box body 10 can be a stamped aluminum part. Laser brazing welds the cast aluminum and high-strength aluminum into one, which is beneficial to reduce the number of bolt assemblies and can enhance the overall strength of the box body 10.

[0038] Optionally, the box body 10 includes a first cover body 12 and a second cover body 13, the second cover body 13 and the first cover body 12 enclose a first accommodating cavity 11, the first cover body 12 may be an upper cover, the second cover body 13 may be a lower cover, the upper cover may be a single-layer steel plate obtained by stamping, the upper cover may include a reinforcing beam and a hoisting support beam, the reinforcing beam and the hoisting support beam may be stamped steel welded on the upper cover, and the number of reinforcing beams and the number of hoisting support beams may be multiple. When the first cover body 12 is in the shape of a rectangular parallelepiped, the reinforcing beam and the hoisting support beam penetrate the first cover body 12 along the width direction of the first cover body 12, thereby locally reinforcing the first cover body 12, multiple hoisting support beams are evenly arranged along the length direction of the first cover body 12, and multiple reinforcing beams can be respectively arranged in the middle part and / or the edge of the first cover body 12, to strengthen the length direction and width direction of the upper cover, so as to achieve the required strength of the upper cover with less material, and ensure the extrusion strength of the battery pack in the length direction and width direction.

[0039] The battery pack provided in the present application includes a box body 10 and a distribution box 20. The box body 10 has a first accommodating cavity 11, and the first accommodating cavity 11 is used to accommodate a battery cell 80, so that the battery cell 80 is sealed and accommodated inside the box body 10. The distribution box 20 includes a shell 21 and a distribution device 22. By making the shell 21 outside the box body 10, the shell 21 and the outer wall of the box body 10 are fixedly connected, so that the box body 10 separates the battery cell 80 and the distribution box 20 into two spaces, that is, the battery cell 80 is isolated from the distribution box 20. A second accommodating cavity 213 is provided in the shell 21, or the outer wall of the shell 21 and the box body 10 encloses the second accommodating cavity 213, and the distribution device 22 is accommodated in the second accommodating cavity 213, so that the distribution device 22 and the battery cell 80 are in two spaces. When the distribution box 20 is repaired, there is no need to disassemble the box body 10, and only the shell 21 of the distribution box 20 needs to be opened, which reduces the disassembly cost and time and improves the maintenance efficiency of the distribution box 20. In addition, when the battery cell 80 has thermal runaway, the large amount of combustible gas released by the battery cell 80 will not diffuse into the distribution box 20, thereby avoiding arcing and short circuit in the distribution box 20, playing a role in delaying the thermal runaway of the battery pack, which is conducive to improving the overall safety performance of the battery pack.

[0040] In one implementation, see Figure 1 , Figure 2 and Figure 3 The box body 10 includes a first cover body 12 and a second cover body 13. The second cover body 13 and the first cover body 12 enclose a first accommodating cavity 11. The edge of the first cover body 12 and the edge of the second cover body 13 are sealed and connected, so that the first cover body 12 and the second cover body 13 together form a sealed box body 10, and the battery cell 80 is sealed and accommodated in the first accommodating cavity 11. A groove 131 is provided on the side of the second cover body 13 away from the first cover body 12. The distribution box 20 is accommodated in the groove 131. The shell 21 is attached to and fixedly connected to the inner wall of the groove 131, so that the thickness of the distribution box 20 at least partially overlaps with the thickness of the first accommodating cavity 11, avoiding the entire protrusion of the distribution box 20 on the surface of the battery pack, which is conducive to beautifying the appearance of the battery pack and reducing the overall thickness of the battery pack, thereby facilitating the overall arrangement of the battery pack in the front cabin of the vehicle and improving space utilization.

[0041] The groove 131 is located at the edge of the second cover body 13, which is conducive to the concentrated arrangement of the battery cells 80 and avoids the situation where the groove 131 is set in the middle position of the second cover body, which would cause the groove 131 to space the battery cells 80 in the first accommodating cavity 11 and affect the layout of other structures in the battery pack. At the same time, the distribution box 20 is located at the edge of the battery pack. When the distribution box 20 is repaired, it is only necessary to operate on the edge area of ​​the battery pack, which is conducive to improving maintenance efficiency and simplifying the maintenance process.

[0042] Optionally, in the stacking direction of the first cover body 12 and the second cover body 13, the length of the distribution box 20 is equal to the depth of the groove 131, so that from the appearance, the volume of the battery pack is equal to the volume after the first cover body 12 and the second cover body 13 are assembled, thereby improving the aesthetics of the appearance of the battery pack and improving the volume utilization of the battery pack, which is conducive to the overall layout of the battery pack in the front cabin of the vehicle.

[0043] In one implementation, see Figure 1 and Figure 2 The distribution box 20 also includes a sealing cover 23. The shell 21 has a first opening 211. The first opening 211 is located on the side of the shell 21 away from the first cover body 12. The opening direction of the first opening 211 is parallel to the stacking direction of the first cover body 12 and the second cover body 13. The sealing cover 23 and the edge of the first opening 211 are sealed and connected, so that a closed space is formed in the distribution box 20, which is beneficial to prevent a large amount of combustible gas discharged to the outside from the battery pack from diffusing into the distribution box 20 when the battery cell 80 is thermally runaway. At the same time, by making the distribution box 20 include the sealing cover 23, when the distribution box 20 is repaired, the connection between the sealing cover 23 and the shell 21 can be removed to repair or replace the distribution device 22, which is beneficial to improve the maintenance efficiency of the distribution box 20.

[0044] Optionally, the edges of the sealing cover 23 and the shell 21 can be fixedly connected by structural adhesive. The structural adhesive is dotted on the edges of the sealing cover 23 and evenly spaced on the edges of the sealing cover 23, so that the sealing cover 23 and the shell 21 are sealed and connected, which is beneficial to improving the installation efficiency of the sealing cover 23 and the shell 21.

[0045] Optionally, the edges of the sealing cover 23 and the shell 21 can be connected by screws, and the edges of the sealing cover 23 and the edges of the shell 21 are both provided with a plurality of threaded holes 61, the threaded holes 61 of the sealing cover 23 and the threaded holes 61 of the shell 21 are arranged one to one, and the plurality of threaded holes 61 are evenly spaced, so that the sealing cover 23 and the shell 21 are sealed and connected by screws, which is also convenient for removing the sealing cover 23 and the shell 21 when the distribution box 20 is repaired.

[0046] In one implementation, see Figure 1 , Figure 2 and Figure 3The shell 21 has a second opening 212, and the second opening 212 and the first opening 211 are arranged opposite to each other. The edge of the first opening 211 is fixedly connected to the bottom wall of the groove 131, so that the bottom wall of the groove 131 cooperates with the shell 21, and the bottom wall of the groove 131 can be used as the bottom wall of the shell 21, that is, part of the second cover 13 becomes a part of the distribution box 20, which is beneficial to reduce the material of the distribution box 20, reduce the cost of the distribution box 20, and at the same time help to reduce the weight of the distribution box 20, and then reduce the weight of the battery pack.

[0047] Optional, see Figure 3 and Figure 4 The battery pack also includes a conductive column 30. A through hole 132 is provided on the bottom wall of the groove 131. The conductive column 30 passes through the through hole 132. One end of the conductive column 30 is accommodated in the first accommodating cavity 11, and the other end of the conductive column 30 is accommodated in the second accommodating cavity 213, so that the conductive column 30 can be electrically connected to the battery cell 80 in the first accommodating cavity 11. At the same time, the conductive column 30 can also be electrically connected to the distribution device 22 in the second accommodating cavity 213, so that the battery cell 80 is electrically connected to the distribution device 22.

[0048] Optionally, the conductive pillar 30 may be a copper pillar.

[0049] In one implementation, see Figure 3 and Figure 4 The battery pack also includes an insulating column 40, which is sleeved on the conductive column 30. The insulating column 40 is respectively fitted with the inner wall of the through hole 132 and the conductive column 30, so that the insulating column 40 isolates the conductive column 30 from the second cover body 13, thereby avoiding electrical connection between the conductive column 30 and the second cover body 13, which is beneficial to avoiding the second cover body 13 from being energized and causing a short circuit or other faults in the battery pack.

[0050] Optionally, the material of the insulating column 40 may be ceramic, which is a high temperature resistant material and can ensure physical properties in a thermal runaway state and slow down the thermal runaway.

[0051] Optionally, the insulating column 40 includes an insulating column body 41 and a base 42. The base 42 is accommodated in the second accommodating chamber 213. The base 42 is located at one end of the insulating column body 41. The base 42 abuts against the bottom wall of the groove 131, so that the base 42 limits the position of the insulating column 40, avoiding the movement of the insulating column 40 at the inner wall of the through hole 132, thereby avoiding the formation of an electrical connection gap between the insulating column 40 and the inner wall of the through hole 132, which is conducive to ensuring the safety of the electrical connection between the battery cell 80 and the distribution device 22. At the same time, the base 42 abuts against the bottom wall of the groove 131, so that the insulating column 40 seals the opening of the through hole 132 on one side close to the distribution box 20, which is conducive to ensuring that the inside of the second accommodating chamber 213 is isolated from the inside of the first accommodating chamber 11. When the battery cell 80 has thermal runaway, the high-temperature flammable gas can be prevented from being directed to the distribution box 20 in the thermal runaway state, thereby delaying the thermal runaway of the battery pack.

[0052] Optionally, the battery pack also includes a sealing ring 50, and the base 42 is provided with a sealing groove 421, the sealing groove 421 surrounds the insulating column body 41, and the sealing ring 50 is accommodated in the sealing groove 421. The sealing ring 50 and the bottom wall of the groove 131 abut against each other, so that the sealing ring 50 can seal between the base 42 and the bottom wall of the groove 131, thereby further sealing the opening on one side of the through hole 132 close to the distribution box 20, which is beneficial to ensure that the interior of the second accommodating cavity 213 is isolated from the interior of the first accommodating cavity 11. When thermal runaway occurs in the battery cell 80, high-temperature flammable gas can be prevented from being guided to the distribution box 20 in the thermal runaway state, thereby delaying the thermal runaway of the battery pack.

[0053] Optionally, the material of the sealing ring 50 may be ceramic silicone foam, which is a high temperature resistant material that can ensure physical properties in a thermal runaway state and slow down the thermal runaway process.

[0054] In one implementation, see Figure 4 The battery pack further includes a first conductive member 60 and a second conductive member 70. The first conductive member 60 is accommodated in the first accommodation cavity 11 and is electrically connected to one end of the conductive column 30. The second conductive member 70 is accommodated in the second accommodation cavity 213 and is electrically connected to the other end of the conductive column 30. The first conductive member 60 is used to electrically connect the battery cell 80 and the conductive column 30, and the second conductive member 70 is used to electrically connect the distribution device 22 and the conductive column 30, which is conducive to simplifying the arrangement of the battery cell 80 and other structures in the first accommodation cavity 11, and simplifying the arrangement of the distribution device 22 in the distribution box 20, while realizing the electrical connection between the battery cell 80 and the distribution device 22.

[0055] Optionally, both the first conductive member 60 and the second conductive member 70 may be copper bars.

[0056] It can be understood that the shape of the first conductive member 60 can be designed according to the layout of the battery cell 80 and other structures in the first accommodating cavity 11, so that the electrical connection between the battery cell 80 and the conductive column 30 can be achieved in a smaller space; the shape of the second conductive member 70 can also be designed according to the layout of the distribution device 22 in the second accommodating cavity 213, so that the electrical connection between the distribution device 22 and the conductive column 30 can be achieved in a smaller space.

[0057] Optionally, a threaded hole 61 is provided on the side of the first conductive member 60 close to the second accommodating cavity 213, a threaded column 71 is provided on the side of the second conductive member 70 close to the first accommodating cavity 11, and a connecting hole 31 is provided on the conductive column 30. The connecting hole 31 penetrates the conductive column 30 along the extension direction of the conductive column 30, and the threaded column 71 passes through the connecting hole 31 and is threadedly connected to the threaded hole 61, and the threaded column 71 fits the inner wall of the connecting hole 31. The first conductive member 60 and the second conductive member 70 are connected by threads, which is conducive to ensuring the connection stability between the first conductive member 60 and the second conductive member 70. At the same time, the conductive column 30 and the insulating column 40 located between the first conductive member 60 and the second conductive member 70 are both compressed by the connection between the threaded column 71 and the threaded hole 61, which is conducive to strengthening the sealing performance between the first accommodating cavity 11 and the second accommodating cavity 213, thereby preventing the high-temperature combustible gas from being guided to the distribution box 20 in the thermal runaway state, and playing a role in delaying the thermal runaway of the battery pack. The battery pack may further include a nut, which is disposed in the first accommodating cavity 11 . The nut is located on the side of the first conductive member 60 away from the conductive column 30 . The nut is threadedly connected to the threaded column 71 , so that the conductive column 30 and the insulating column 40 are tightened by the connection between the nut and the threaded column 71 .

[0058] The present application also provides an electrical device, comprising an electrical device and a battery pack according to any one of the above-mentioned first aspect implementations, wherein the battery pack and the electrical device are electrically connected.

[0059] It can be understood that the electrical equipment in this embodiment has the battery pack in the above-mentioned embodiments. Therefore, the electrical equipment in this embodiment has all the technical effects of the battery pack in the above-mentioned embodiments. Since the technical effects of the battery pack have been fully explained in the above-mentioned embodiments, they will not be repeated here.

[0060] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A battery pack, characterized in that: include: The box body has a first accommodating cavity, wherein the first accommodating cavity is used to accommodate the battery cell; A distribution box comprises a shell and a distribution device, wherein the shell is located outside the box body, the shell and the outer wall of the box body are fixedly connected, a second accommodating cavity is arranged in the shell, or the shell and the outer wall of the box body enclose the second accommodating cavity, and the distribution device is accommodated in the second accommodating cavity.

2. The battery pack according to claim 1, characterized in that: The box body includes a first cover body and a second cover body, the first cover body and the second cover body enclose the first accommodating cavity, a groove is provided on the side of the second cover body away from the first cover body, the groove is located at the edge of the second cover body, the distribution box is accommodated in the groove, and the shell is attached to and fixedly connected to the inner wall of the groove.

3. The battery pack according to claim 2, characterized in that: The distribution box also includes a sealing cover, the shell has a first opening, the first opening is located on the side of the shell away from the first cover body, the opening direction of the first opening is parallel to the stacking direction of the first cover body and the second cover body, and the sealing cover is sealed to the edge of the first opening.

4. The battery pack according to claim 3, characterized in that: The shell has a second opening, the second opening is arranged opposite to the first opening, and the edge of the second opening is fixedly connected to the bottom wall of the groove.

5. The battery pack according to claim 4, characterized in that: The battery pack also includes a conductive column. A through hole is provided on the bottom wall of the groove. The conductive column passes through the through hole. One end of the conductive column is accommodated in the first accommodating cavity, and the other end of the conductive column is accommodated in the second accommodating cavity.

6. The battery pack according to claim 5, characterized in that: The battery pack further includes an insulating column, which is sleeved on the conductive column and is respectively attached to the inner wall of the through hole and the conductive column.

7. The battery pack according to claim 6, characterized in that: The insulating column comprises an insulating column body and a base, wherein the base is accommodated in the second accommodating cavity, the base is located at one end of the insulating column body, and the base abuts against the bottom wall of the groove.

8. The battery pack according to claim 7, characterized in that: The battery pack further comprises a sealing ring, the base is provided with a sealing groove, the sealing groove surrounds the insulating column body, the sealing ring is accommodated in the sealing groove, and the sealing ring abuts against the bottom wall of the groove.

9. The battery pack according to claim 8, characterized in that: The battery pack also includes a first conductive member and a second conductive member, wherein the first conductive member is accommodated in the first accommodating cavity and is electrically connected to one end of the conductive column, and the second conductive member is accommodated in the second accommodating cavity and is electrically connected to the other end of the conductive column.

10. The battery pack according to claim 9, characterized in that: A threaded hole is provided on one side of the first conductive member close to the second accommodating cavity, a threaded column is provided on one side of the second conductive member close to the first accommodating cavity, the conductive column is provided with a connecting hole, the connecting hole penetrates the conductive column along the extension direction of the conductive column, the threaded column passes through the connecting hole and is threadedly connected to the threaded hole, and the threaded column fits against the inner wall of the connecting hole.

11. An electrical device, characterized in that: It comprises an electrical appliance and a battery pack as claimed in any one of claims 1 to 10, wherein the battery pack is electrically connected to the electrical appliance.

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