Battery device, connecting assembly and electric equipment

Abstract

The utility model discloses a battery device, a connecting assembly and electric equipment, and the battery device comprises a battery box body which is provided with a containing space; at least partial structures of the electric components are positioned in the accommodating space; the connecting assembly comprises an electric connecting piece, an insulating piece and a first protective piece, and the electric connecting piece is connected to the same side of the two electric components; the insulating piece is coated on the electric connecting piece and is positioned between the two connected electric components; the first protection piece is arranged on one side, back to the electric component, of the electric connecting piece and one side, back to the electric component, of the insulating piece; the orthographic projection of the insulating part towards the first protection part is located on the first protection part. According to the invention, thermal runaway diffusion can be weakened, and risks of fire, explosion and the like caused by thermal runaway diffusion can be reduced, so that the reliability of the battery device can be improved.

Description

Technical Field

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

[0002] With the development of battery technology, battery devices are used in more and more fields, and gradually replace traditional petrochemical energy in areas such as automotive power. The charging and discharging process of battery devices is accompanied by chemical reactions. When the chemical reaction process is out of control, a large amount of heat will be released in a short period of time. This is the thermal runaway process.

[0003] The battery device includes multiple electrical components. In the related art, two electrical components are connected by a metal sheet. When the electrical components have thermal runaway, the high-temperature gas and high-temperature particulate matter generated will spray toward the electrical components connected to the metal sheet, which may cause the electrical components connected to the metal sheet to also have thermal runaway, thereby causing the thermal runaway to spread. The high-temperature gas and high-temperature particulate matter ejected when the electrical components have thermal runaway are flammable and can easily cause risks such as fire and explosion, and the reliability of the battery device is low. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device, a connection assembly and an electrical device to weaken the spread of thermal runaway and reduce the risks of fire, explosion, etc. caused by the spread of thermal runaway, thereby improving the reliability of the battery device.

[0005] In the first aspect, the present application provides a battery device, which includes: a battery case forming a storage space; a plurality of electrical components, at least part of the structure of the electrical components is located in the storage space; a connecting assembly, the connecting assembly includes an electrical connector, an insulating member and a first protective member, wherein the electrical connector is connected to the same side of two electrical components; the insulating member is coated on the electrical connector and is located between the two connected electrical components; the first protective member is arranged on a side of the electrical connector facing away from the electrical components and on a side of the insulating member facing away from the electrical components; the positive projection of the insulating member toward the first protective member is located on the first protective member. The electrical connection of the two electrical components is achieved by connecting the electrical connector to the same side of the two electrical components, the insulating component covers the electrical connector, and the first protective component is arranged on the side of the electrical connector facing away from the electrical component and the side of the insulating component facing away from the electrical component, and the positive projection of the insulating component toward the first protective component is located on the first protective component. On the one hand, the insulating component plays a role of insulation and blocking liquids, dust and other substances from contacting the electrical connector, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector. At the same time, the first protective component can press the insulating component and the electrical connector, and cover the side of the insulating component facing away from the electrical component, which can reduce the risks of the insulating component being carbonized, burned and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, the insulating component and the first protective component can block high-temperature gases and high-temperature particles from spraying toward the connected electrical components when thermal runaway occurs in the electrical components, so as to weaken the spread of thermal runaway and reduce the risks of fire and explosion caused by the spread of thermal runaway, thereby improving the reliability of the battery device.

[0006] In some embodiments, the electrical component includes a battery cell group, the electrical connector is used to connect two adjacent battery cell groups, and the insulating member is located between the two adjacent battery cell groups. By locating the insulating member between the two adjacent battery cell groups, not only are the two ends of the electrical connector used to connect the battery cell group exposed outside the insulating member, which facilitates the two ends of the electrical connector to be connected to the two adjacent battery cell groups respectively, but the insulating member can also provide insulation protection for the area where the electrical connector is located between the two adjacent battery cell groups, thereby reducing the risk of leakage, short circuit, corrosion, etc. in the area where the electrical connector is located between the two adjacent battery cell groups.

[0007] In some embodiments, the connection assembly further includes a plurality of second protective members, a portion of which is disposed on one of two adjacent battery cell groups, and another portion of which is disposed on the other of two adjacent battery cell groups; wherein the second protective member is at least partially disposed on the side of the first protective member facing away from the battery cell group. By disposing the second protective member on the battery cell group, and the second protective member is at least partially disposed on the side of the first protective member facing away from the battery cell group, on the one hand, the second protective member can fix and limit the two ends of the first protective member, thereby reducing the risk of the first protective member being lifted, swung or falling off under the action of airflow; on the other hand, the structural strength and impact resistance of the battery cell group can be enhanced, thereby reducing the risk of thermal runaway and the like due to impact or extrusion of the battery cell group.

[0008] In some embodiments, the battery cell group is provided with a first wall portion and a second wall portion which are perpendicular to each other, the electrical connector is at least partially provided on the first wall portion, and the first protective member is provided on a side of the electrical connector which is away from the first wall portion; the second protective member includes a first sub-protective member and a second sub-protective member connected to the first sub-protective member; the first sub-protective member at least partially covers a side of the first protective member which is away from the first wall portion; the second sub-protective member is provided on the second wall portion and covers at least a portion of a side end surface of the electrical connector and at least a portion of a side end surface of the first protective member. By making the first sub-protective component at least partially cover the side of the first protective component facing away from the first wall portion, and at the same time arranging the second sub-protective component on the second wall portion and covering at least part of the side end surface of the electrical connector and at least part of the side end surface of the first protective component, on the one hand, the first sub-protective component can fix the first protective component, thereby reducing the risk of the first protective component being lifted, swung or falling off under the action of the airflow, and at the same time, the second sub-protective component can isolate the battery cell group where it is located and the battery cell group opposite to it, and can block the risk of high-temperature gas or high-temperature particles spraying to the battery cell group where it is located and the battery cell group opposite to it when thermal runaway occurs in one of the battery cell group where it is located and the battery cell group opposite to it, thereby weakening the spread of thermal runaway and improving the reliability of the battery device. On the other hand, the second sub-protective component and the first sub-protective component are coated in the connection area between the first wall portion and the second wall portion, which can enhance the connection strength between the first wall portion and the second wall portion, so that the overall structural strength of the battery cell group is improved, thereby reducing the risk of thermal runaway, short circuit, etc. when the battery cell group is impacted or squeezed.

[0009] In some embodiments, the first protective member includes two covering areas spaced apart along the first direction, a first sub-protective member of a second protective member covers one of the covering areas, and a first sub-protective member of another second protective member covers the other covering area; wherein the first dimension of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member is 5mm-10mm, and the second dimension of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member is 5mm-10mm; the first direction is perpendicular to the second direction. By respectively covering the two covering areas spaced apart along the first direction of the first protective member with the first sub-protective members, and making the first dimension of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member 5mm-10mm, and the second dimension of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member 5mm-10mm, the second protective member can better fix the first protective member, and can reduce the risk of the first protective member being lifted, swung or falling off under the action of airflow.

[0010] In some embodiments, the insulating member has a first tail region and a second tail region, and one of the first tail region and the second tail region covers the other of the first tail region and the second tail region. By making one of the first tail region and the second tail region cover the other of the first tail region and the second tail region, the risk of the electrical connector being exposed due to the first tail region and the second tail region curling up due to heat is reduced, and the insulation protection effect of the insulating member on the electrical connector can be improved.

[0011] In some embodiments, the size of the first protective member in the first direction is larger than the size of the electrical connector in the first direction, wherein the first direction is parallel to the arrangement direction of two adjacent battery cell groups. By making the size of the first protective member in the first direction larger than the size of the electrical connector in the first direction, the first protective member can cover both ends of the electrical connector in the first direction, which can reduce the risk of leakage, short circuit with other conductors, and corrosion at both ends of the electrical connector in the first direction; and reduce the risk of high-temperature particles accumulating on the surface of the two ends of the electrical connector along the first direction facing away from the battery cell group when the battery cell group has thermal runaway, and transferring heat to the other connected battery cell group, causing the other connected battery cell group to also have thermal runaway, thereby weakening the spread of thermal runaway and further improving the reliability of the battery device.

[0012] In some embodiments, the size of the first protective member in the second direction is greater than or equal to the size of the electrical connector in the second direction, and the second direction is perpendicular to the first direction. By making the size of the first protective member in the second direction greater than the size of the electrical connector in the second direction, the first protective member can cover both sides of the electrical connector in the second direction. On the one hand, it can reduce the risk of leakage, short circuit with other conductors, and corrosion on both sides of the electrical connector in the second direction; on the other hand, it can reduce the risk of high-temperature particles accumulating on the surface of the electrical connector on both sides along the second direction facing away from the battery cell group when the battery cell group has thermal runaway, and transferring heat to the other connected battery cell group, causing the other connected battery cell group to also have thermal runaway, thereby weakening the spread of thermal runaway and further improving the reliability of the battery device.

[0013] In the second aspect, the present application provides a connection assembly, which includes an electrical connector, an insulating member and a first protective member, wherein the electrical connector is used to be connected to the same side of two electrical components of a battery device; the insulating member is coated on the electrical connector and is located between the two connected electrical components; the first protective member is used to be arranged on a side of the electrical connector facing away from the electrical component and a side of the insulating member facing away from the electrical component; the positive projection of the insulating member toward the first protective member is located on the first protective member. The electrical connection of the two electrical components is achieved by connecting the electrical connector to the same side of the two electrical components, the insulating component covers the electrical connector, and the first protective component is arranged on the side of the electrical connector facing away from the electrical component and the side of the insulating component facing away from the electrical component, and the positive projection of the insulating component toward the first protective component is located on the first protective component. On the one hand, the insulating component plays a role of insulation and blocking liquids, dust and other substances from contacting the electrical connector, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector. At the same time, the first protective component can press the insulating component and the electrical connector, and cover the side of the insulating component facing away from the electrical component, which can reduce the risks of the insulating component being carbonized, burned and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, the insulating component and the first protective component can block high-temperature gases and high-temperature particles from spraying toward the connected electrical components when thermal runaway occurs in the electrical components, so as to weaken the spread of thermal runaway and reduce the risks of fire and explosion caused by the spread of thermal runaway, thereby improving the reliability of the battery device.

[0014] In some embodiments, the electrical component further includes a battery cell group, the electrical connector is used to connect two adjacent battery cell groups, and the insulating member is located between the two adjacent battery cell groups. By locating the insulating member between the two adjacent battery cell groups, not only are the two ends of the electrical connector used to connect the battery cell group exposed outside the insulating member, which facilitates the two ends of the electrical connector to be connected to the two adjacent battery cell groups respectively, but the insulating member can also provide insulation protection for the area where the electrical connector is located between the two adjacent battery cell groups, thereby reducing the risk of leakage, short circuit, corrosion, etc. in the area where the electrical connector is located between the two adjacent battery cell groups.

[0015] In some embodiments, the connection assembly further includes a plurality of second protective members, a portion of which is used to be arranged on one of two adjacent battery cell groups, and another portion of which is used to be arranged on the other of two adjacent battery cell groups; wherein, at least a portion of the second protective member is used to be arranged on the side of the first protective member that is away from the battery cell group. By arranging the second protective member on the battery cell group, and at least a portion of the second protective member is arranged on the side of the first protective member that is away from the battery cell group, on the one hand, the second protective member can fix and limit the two ends of the first protective member, thereby reducing the risk of the first protective member being lifted, swung or falling off under the action of airflow; on the other hand, the structural strength and impact resistance of the battery cell group can be enhanced, thereby reducing the risk of thermal runaway and the like due to impact or extrusion of the battery cell group.

[0016] In some embodiments, the battery cell group is provided with a first wall portion and a second wall portion which are perpendicular to each other, the electrical connector is at least partially provided on the first wall portion, and the first protective member is provided on a side of the electrical connector which is away from the first wall portion; the second protective member includes a first sub-protective member and a second sub-protective member connected to the first sub-protective member; the first sub-protective member at least partially covers a side of the first protective member which is away from the first wall portion; the second sub-protective member is provided on the second wall portion and covers at least a portion of a side end surface of the electrical connector and at least a portion of a side end surface of the first protective member. By making the first sub-protective component at least partially cover the side of the first protective component facing away from the first wall portion, and at the same time arranging the second sub-protective component on the second wall portion and covering at least part of the side end surface of the electrical connector and at least part of the side end surface of the first protective component, on the one hand, the first sub-protective component can fix the first protective component, thereby reducing the risk of the first protective component being lifted, swung or falling off under the action of the airflow, and at the same time, the second sub-protective component can isolate the battery cell group where it is located and the battery cell group opposite to it, and can block the risk of high-temperature gas or high-temperature particles spraying to the battery cell group where it is located and the battery cell group opposite to it when thermal runaway occurs in one of the battery cell group where it is located and the battery cell group opposite to it, thereby weakening the spread of thermal runaway and improving the reliability of the battery device. On the other hand, the second sub-protective component and the first sub-protective component are coated in the connection area between the first wall portion and the second wall portion, which can enhance the connection strength between the first wall portion and the second wall portion, so that the overall structural strength of the battery cell group is improved, thereby reducing the risk of thermal runaway, short circuit, etc. when the battery cell group is impacted or squeezed.

[0017] In some embodiments, the first protective member includes two covering areas spaced apart along the first direction, a first sub-protective member of a second protective member covers one of the covering areas, and a first sub-protective member of another second protective member covers the other covering area; wherein the first dimension of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member is 5mm-10mm, and the second dimension of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member is 5mm-10mm; the first direction is perpendicular to the second direction. By respectively covering the two covering areas spaced apart along the first direction of the first protective member with the first sub-protective members, and making the first dimension of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member 5mm-10mm, and the second dimension of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member 5mm-10mm, the second protective member can better fix the first protective member, and can reduce the risk of the first protective member being lifted, swung or falling off under the action of airflow.

[0018] In a third aspect, the present application provides an electrical device, wherein the electrical device comprises: the above-mentioned battery device; or, the above-mentioned electrical component. The electrical connection of the two electrical components is achieved by connecting the electrical connector to the same side of the two electrical components, the insulating component covers the electrical connector, and the first protective component is arranged on the side of the electrical connector facing away from the electrical component and the side of the insulating component facing away from the electrical component, and the positive projection of the insulating component toward the first protective component is located on the first protective component. On the one hand, the insulating component plays a role of insulation and blocking liquids, dust and other substances from contacting the electrical connector, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector. At the same time, the first protective component can press the insulating component and the electrical connector, and cover the side of the insulating component facing away from the electrical component, which can reduce the risks of the insulating component being carbonized, burned and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, the insulating component and the first protective component can block high-temperature gases and high-temperature particles from spraying toward the connected electrical components when thermal runaway occurs in the electrical components, so as to weaken the spread of thermal runaway and reduce the risks of fire and explosion caused by the spread of thermal runaway, thereby improving the reliability of the battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of an embodiment of an electric device provided by the present application;

[0021] Figure 2 is a schematic diagram of the exploded structure of an embodiment of a battery device provided in the present application;

[0022] Figure 3 It is a partial structural schematic diagram of an embodiment of a battery device provided in the present application;

[0023] Figure 4 yes Figure 3 A magnified view of part A in FIG.

[0024] Figure 5 It is a structural schematic diagram of the first embodiment of the connection assembly provided by the present application;

[0025] Figure 6 is a structural schematic diagram of a second embodiment of a connection assembly provided in the present application;

[0026] Figure 7 is a structural schematic diagram of a third embodiment of a connection assembly provided in the present application;

[0027] Figure 8It is a structural schematic diagram of the fourth embodiment of the connection component provided in this application.

[0028] The reference numerals in the specific implementation manner are as follows:

[0029] Vehicle 1000a, battery device 100a, controller 200a, motor 300a, battery case 10, accommodating space 10a, first part 11, second part 12, electrical component 20, battery cell group 21, first wall portion 211, second wall portion 212, connecting assembly 30, electrical connector 31, insulating member 32, first end 321, second end 322, main body 323, first extension portion 324, second extension portion 325, first end region 326, second end region 327, first protective member 33, covering region 331, second protective member 34, first sub-protective member 341, second sub-protective member 342. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of 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 embodiments of the present application.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may 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.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "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 one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate heat exchange medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] With the development of battery technology, battery devices are used in more and more fields, and gradually replace traditional petrochemical energy in areas such as automotive power. The charging and discharging process of the battery device is accompanied by the occurrence of chemical reactions. When the chemical reaction process is out of control, a large amount of heat will be released in a short period of time. This is the thermal runaway process. The battery device includes multiple electrical components, and the electrical component can be at least one of a battery cell, a battery cell group, and an electrical input and output port.

[0038] In the related art, two electrical components are connected by a metal sheet. When the electrical components have thermal runaway, the high-temperature gas and high-temperature particulate matter generated will spray toward the electrical components connected to the metal sheet, which may cause the electrical components connected to the metal sheet to also have thermal runaway, thereby causing the thermal runaway to spread. The high-temperature gas and high-temperature particulate matter sprayed out when the electrical components have thermal runaway are flammable and can easily cause risks such as fire and explosion, and the reliability of the battery device is low.

[0039] Based on the above considerations, the present application provides a battery device, a connection assembly and an electrical device. The battery device includes a battery box, a plurality of electrical components and a connection assembly, wherein the connection assembly includes an electrical connector, an insulating member and a first protective member, wherein the electrical connector is connected to the same side of two electrical components; the insulating member is coated on the electrical connector and is located between the two connected electrical components; the first protective member is arranged on the side of the electrical connector facing away from the electrical component and on the side of the insulating member facing away from the electrical component; the positive projection of the insulating member toward the first protective member is located on the first protective member. The electrical connection between the two electrical components is achieved by connecting the two electrical components on the same side through an electrical connector, the insulating component covers the electrical connector, and the first protective component is arranged on the side of the electrical connector facing away from the electrical component and on the side of the insulating component facing away from the electrical component, and the positive projection of the insulating component toward the first protective component is located on the first protective component. On the one hand, the insulating component plays a role in insulation and blocking liquids, dust and other substances from contacting the electrical connector, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector. At the same time, the first protective component can press the insulating component and the electrical connector, and cover the side of the insulating component facing away from the electrical component, which can reduce the risks of the insulating component being carbonized, burned and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, the insulating component and the first protective component can block high-temperature gases and high-temperature particles from spraying toward the connected electrical components when thermal runaway occurs in the electrical components, so as to weaken the spread of thermal runaway and reduce the risks of fire and explosion caused by the spread of thermal runaway, thereby improving the reliability of the battery device.

[0040] The battery device, connection assembly and electrical equipment disclosed in the embodiments of the present application can be used for electrical equipment using the battery device as a power source or various energy storage systems using the battery device as an energy storage element. Electrical equipment can be, but is not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, for example, game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0041] For the convenience of description, the following embodiments are described by taking an electrical device in an embodiment of the present application as a vehicle 1000a as an example.

[0042] Please refer to Figure 1The vehicle 1000a may be a pure electric vehicle, a hybrid electric vehicle or an extended-range vehicle, etc. A battery device 100a is disposed inside the vehicle 1000a, and the battery device 100a may be disposed at the bottom of the vehicle 1000a. The battery device 100a may be used to power the vehicle 1000a, for example, the battery device 100a may be used as an operating power source for the vehicle 1000a. The vehicle 1000a may also include a controller 200a and a motor 300a, and the controller 200a is used to control the battery device 100a to power the motor 300a, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000a.

[0043] In some embodiments of the present application, the battery device 100a can not only serve as an operating power source for the vehicle 1000a, but also serve as a driving power source for the vehicle 1000a, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000a.

[0044] In some embodiments, the battery device 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0045] Please refer to Figure 2 The battery device 100a mentioned in the embodiment of the present application may include one or more battery cell groups 21 for providing voltage and capacity. The battery cell group may include a plurality of battery cells.

[0046] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0047] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0048] In some embodiments, the battery device 100 a includes a battery cell group 21 and a battery case 10 having a receiving space 10 a formed therein, and the receiving space 10 a is used to receive the battery cell group 21 .

[0049] In some embodiments, the battery box 10 can be used as part of the chassis structure of the vehicle 1000a. For example, part of the battery box 10 can be used as at least a part of the chassis of the vehicle 1000a, or part of the battery box 10 can be used as at least a part of the cross beam and longitudinal beam of the vehicle 1000a.

[0050] Please continue to refer to Figure 2, the battery case 10 can adopt a variety of structures. In some embodiments, the battery case 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space 10a for accommodating the battery cell group 21. The second part 12 can be a hollow structure with one end open, and the first part 11 can be a plate-like structure. The first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define the storage space 10a; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the battery case 10 formed by the first part 11 and the second part 12 can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0051] In some embodiments, please refer to Figures 2 to 5 The battery device 100a includes a battery case 10, multiple electrical components 20 and a connecting assembly 30, wherein the battery case 10 forms a accommodating space 10a; at least part of the structure of the electrical component 20 is located in the accommodating space 10a; the connecting assembly 30 includes an electrical connector 31, an insulating member 32 and a first protective member 33, wherein the electrical connector 31 is connected to the same side of two electrical components 20; the insulating member 32 is coated on the electrical connector 31 and is located between the two connected electrical components 20; the first protective member 33 is arranged on the side of the electrical connector 31 facing away from the electrical component 20 and on the side of the insulating member 32 facing away from the electrical component 20; the positive projection of the insulating member 32 toward the first protective member 33 is located on the first protective member 33.

[0052] The electrical component 20 is a component capable of electrical transmission.

[0053] The electrical connector 31 has good electrical conductivity, thermal conductivity, corrosion resistance and other properties. The material of the electrical connector 31 can be copper, aluminum, silver, copper alloy, aluminum alloy, copper-silver alloy or copper-bismuth alloy, but is not limited thereto. The electrical connector 31 can be in the shape of a plate or a strip. The embodiment of the present application is described by taking the electrical connector 31 as a plate as an example.

[0054] The insulating member 32 is wrapped around the electrical connector 31, and the first protective member 33 is arranged in close contact with the side of the insulating member 32 facing away from the electrical component 20, which can reduce the space occupied by the connecting assembly 30 in the stacking direction of the electrical component 20 and the first protective member 33 to a certain extent, thereby improving the energy density of the battery device 100a.

[0055] In some embodiments, please refer to Figure 5The insulating member 32 includes a first end 321 and a second end 322, and the first end 321 and the second end 322 are arranged opposite to each other in the arrangement direction of the two electrical components 20 connected to the electrical connector 31. The insulating member 32 is coated on the outer surface of the electrical connector 31, and the first end 321 is used to abut against one of the electrical components 20 connected to the electrical connector 31, and the second end 322 is used to abut against the other electrical component 20 connected to the electrical connector 31. On the one hand, the two ends of the electrical connector 31 used to connect the electrical components 20 are exposed outside the insulating member 32, so that the two ends of the electrical connector 31 are connected to the two electrical components 20 respectively; on the other hand, liquids, dust and other substances cannot fall on the electrical connector 31 through the insulating member 32 and the electrical components 20, which can improve the insulation protection effect of the insulating member 32 on the electrical connector 31 and reduce the risks of leakage, short circuit and corrosion of the electrical connector 31.

[0056] In some embodiments, please refer to Figure 6 The insulating member 32 includes a main body 323, a first extension portion 324 and a second extension portion 325. The main body 323 is covered on the electrical connector 31 and is located between the two electrical components 20 connected by the electrical connector 31. The main body 323 includes a first end 321 and a second end 322 that are arranged opposite to each other. The first extension portion 324 is connected to the side of the first end 321 that faces away from the electrical component 20, and extends in a direction away from the second end 322 to cover the side of one end of the electrical connector 31 used to connect the electrical component 20 that faces away from the electrical component 20; the second extension portion 325 is connected to the side of the second end 322 that faces away from the electrical component 20, and extends in a direction away from the first end 321 to cover the side of the other end of the electrical connector 31 used to connect the electrical component 20 that faces away from the electrical component 20. This can not only reduce the risk of corrosion on the side of the two ends of the electrical connector 31 used to connect the electrical component 20 that faces away from the electrical component 20, but also increase the contact area between the insulating component 32 and the first protective component 33, and improve the connection strength between the insulating component 32 and the first protective component 33.

[0057] The material of the insulating member 32 may be polyvinyl chloride, polyethylene, cross-linked polyethylene, polyolefin, polyurethane, polypropylene, etc., but is not limited thereto.

[0058] The first protective member 33 may be a heat-resistant insulating protective layer, and may be made of a material with high insulation performance and high temperature resistance, so that the first protective member 33 will not be carbonized or burned by high-temperature gas and high-temperature particles, thereby improving the protective effect of the first protective member 33 on the insulating member 32. The temperature resistance of the first protective member 33 may be greater than or equal to 800°C. The material of the first protective member 33 may be a hard muscovite board, a phlogopite board, an organic silicon soft mica board, a silicon carbide ceramic or a silicate fiber, but is not limited thereto.

[0059] In some embodiments, the connection method between the first protective member 33 and the insulating member 32 includes but is not limited to hot melt connection, electric melt connection or adhesive bonding, wherein the adhesive includes but is not limited to epoxy resin adhesive, polyester adhesive, polyurethane adhesive, phenolic adhesive, polyimide adhesive or bismaleimide adhesive.

[0060] The present application realizes the electrical connection of the two electrical components 20 by connecting the electrical connector 31 to the same side of the two electrical components 20, the insulating member 32 covers the electrical connector 31, and the first protective member 33 is arranged on the side of the electrical connector 31 facing away from the electrical component 20 and the side of the insulating member 32 facing away from the electrical component 20, and the positive projection of the insulating member 32 toward the first protective member 33 is located on the first protective member 33. On the one hand, the insulating member 32 plays the role of insulation and blocking the contact of liquids and dust and other substances with the electrical connector 31, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector 31. On the one hand, the insulating member 32 and the first protective member 33 can press the insulating member 32 and the electrical connector 31 together, and cover the side of the insulating member 32 facing away from the electrical component 20, thereby reducing the risk of the insulating member 32 being carbonized, burned, and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, when thermal runaway occurs in the electrical component 20, the insulating member 32 and the first protective member 33 can block high-temperature gases and high-temperature particles from spraying toward the connected electrical component 20, so as to weaken the spread of thermal runaway and reduce the risk of fire, explosion, etc. caused by the spread of thermal runaway, thereby improving the reliability of the battery device 100a.

[0061] In some embodiments, please refer to Figures 2 to 4 The electrical component 20 includes a battery cell group 21 , an electrical connector 31 is used to connect two adjacent battery cell groups 21 , and an insulating member 32 is located between the two adjacent battery cell groups 21 .

[0062] In some embodiments, the electrical component 20 may include a plurality of battery cell groups 21, and two adjacent battery cell groups 21 are connected by an electrical connector 31, so that a series connection, parallel connection, or hybrid connection between the plurality of battery cell groups 21 can be achieved. The battery cell group 21 may include a plurality of battery cells. In other embodiments, the electrical connector 31 may also be used to connect two adjacent battery cells to achieve a series connection, parallel connection, or hybrid connection of a plurality of battery cells. The embodiment of the present application is described by taking the electrical component 20 as a battery cell group 21 as an example.

[0063] In some embodiments, the battery device 100a includes a plurality of battery cell groups 21, and the plurality of battery cell groups 21 are arranged in an array in the accommodation space 10a. The battery cell group 21 has an electrode lead-out portion. In two adjacent battery cell groups 21, each battery cell group 21 has at least one electrode lead-out portion located on the side facing each other. The electrical connector 31 is disposed on the two adjacent battery cell groups 21, and one end of the electrical connector 31 is connected to the electrode lead-out portion of one of the two adjacent battery cell groups 21, and the other end of the electrical connector 31 is connected to the electrode lead-out portion of the other of the two adjacent battery cell groups 21, so as to realize the electrical connection between the two adjacent battery cell groups 21.

[0064] By locating the insulating member 32 between two adjacent battery cell groups 21, not only are the two ends of the electrical connector 31 used to connect the battery cell groups 21 exposed outside the insulating member 32, making it convenient for the two ends of the electrical connector 31 to be respectively connected to the two adjacent battery cell groups 21, but the insulating member 32 can also provide insulation protection for the area where the electrical connector 31 is located between the two adjacent battery cell groups 21, thereby reducing the risks of leakage, short circuit and corrosion in the area where the electrical connector 31 is located between the two adjacent battery cell groups 21.

[0065] In some embodiments, please refer to Figures 2 to 4 The connecting assembly 30 also includes a plurality of second protective members 34, a portion of the plurality of second protective members 34 is arranged on one of two adjacent battery cell groups 21, and another portion of another second protective member 34 is arranged on the other of the two adjacent battery cell groups 21; wherein the second protective member 34 is at least partially arranged on a side of the first protective member 33 facing away from the battery cell group 21.

[0066] Each battery cell group 21 may be provided with at least one second protective member 34. When one second protective member 34 is provided on the battery cell group 21, the second protective member 34 is at least partially disposed on the side of the first protective member 33 facing away from the battery cell group 21; when multiple second protective members 34 are provided on the battery cell group 21, at least one of the multiple second protective members 34 is at least partially disposed on the side of the first protective member 33 facing away from the battery cell group 21, and other second protective members 34 are disposed in other areas of the battery cell group 21, for example, in the connection area of ​​two adjacent wall portions disposed in other areas of the battery cell group 21.

[0067] In some embodiments, the battery cell group 21 has a plurality of wall portions, and the electrode lead-out portion of the battery cell group 21 is located on one side of one wall portion close to an adjacent wall portion. The connection assembly 30 includes two second protective members 34, one of the two second protective members 34 is at least partially disposed on the wall portion of one of the two battery cell groups 21 connected by the electrical connector 31 where the electrode lead-out portion is disposed, and covers the side of one end of the first protective member 33 facing away from the battery cell group 21; the other of the two second protective members 34 is at least partially disposed on the wall portion of the other of the two battery cell groups 21 connected by the electrical connector 31 where the electrode lead-out portion is disposed, and covers the side of the other end of the first protective member 33 facing away from the battery cell group 21, thereby fixing and limiting the two ends of the first protective member 33, so that the first protective member 33 is not prone to problems such as warping, swinging or falling off under the action of airflow.

[0068] Among them, the extension direction of the second protective member 34 can be parallel to the arrangement direction of the two battery cell groups 21 connected to the electrical connector 31, and the size of the second protective member 34 along the arrangement direction of the two battery cell groups 21 connected to the electrical connector 31 is greater than or equal to the size of the battery cell group 21 along the arrangement direction of the two battery cell groups 21 connected to the electrical connector 31. The second protective member 34 can serve as a reinforcing beam of the battery cell group 21, which can enhance the structural strength and impact resistance of the battery cell group 21, thereby reducing the risk of thermal runaway caused by impact or extrusion of the battery cell group 21.

[0069] By arranging the second protective member 34 on the battery cell group 21, and the second protective member 34 is at least partially arranged on the side of the first protective member 33 facing away from the battery cell group 21, on the one hand, the second protective member 34 can fix and limit the two ends of the first protective member 33, thereby reducing the risk of the first protective member 33 being lifted, swung or fallen off under the action of airflow; on the other hand, it can enhance the structural strength and impact resistance of the battery cell group 21, thereby reducing the risk of thermal runaway caused by impact or extrusion of the battery cell group 21.

[0070] In some embodiments, please refer to Figures 2 to 4The battery cell group 21 is provided with a first wall portion 211 and a second wall portion 212 which are perpendicular to each other, the electrical connector 31 is at least partially provided on the first wall portion 211, and the first protective member 33 is provided on the side of the electrical connector 31 which is away from the first wall portion 211; the second protective member 34 includes a first sub-protective member 341 and a second sub-protective member 342 connected to the first sub-protective member 341; the first sub-protective member 341 at least partially covers the side of the first protective member 33 which is away from the first wall portion 211; the second sub-protective member 342 is provided on the second wall portion 212 and covers at least part of the side end surface of the electrical connector 31 and at least part of the side end surface of the first protective member 33.

[0071] The first wall portion 211 is connected to the second wall portion 212. The first wall portion 211 may be a side wall of the battery cell group 21, and the second wall portion 212 may be another side wall of the battery cell group 21; or, the first wall portion 211 may be a top wall of the battery cell group 21, and the second wall portion 212 may be a side wall of the battery cell group 21; or, the first wall portion 211 may be a side wall of the battery cell group 21, and the second wall portion 212 may be a top wall of the battery cell group 21; or, the first wall portion 211 may be a side wall of the battery cell group 21, and the second wall portion 212 may be a bottom wall of the battery cell group 21. The bottom wall is located on the side of the battery cell group 21 facing the bottom of the battery case 10, the top wall is located on the side of the battery cell group 21 facing away from the bottom of the battery case 10, and the side wall is connected between the top wall and the bottom wall. The embodiment of the present application is described with the first wall portion 211 as the top wall of the battery cell group 21, and the second wall portion 212 as the side wall of the battery cell group 21.

[0072] The two ends of the electrical connector 31 along the first direction XX are respectively arranged on the first wall 211 of two adjacent battery cell groups 21, and the area where the electrical connector 31 is provided with the insulating member 32 is located between the first wall 211 of two adjacent battery cell groups 21. The projections of the electrical connector 31 and the insulating member 32 toward the first protective member 33 completely fall on the first protective member 33, and the two sides of the first protective member 33 along the first direction XX exceed the two sides of the electrical connector 31 along the first direction XX, and the two sides of the first protective member 33 along the second direction YY exceed the two sides of the electrical connector 31 along the second direction YY. The first direction XX is parallel to the arrangement direction of the two battery cell groups 21 connected to the electrical connector 31; the second direction YY is perpendicular to the first direction XX, and perpendicular to the stacking direction of the first protective member 33 and the battery cell groups 21.

[0073] In some embodiments, the portion of the first protective member 33 that extends beyond the electrical connector 31 can be arranged in close contact with the first wall portion 211 to cover at least part of the side end surfaces of the electrical connector 31 and the insulating member 32, further reducing the risk of high-temperature particles overlapping the electrical connector 31 and causing a short circuit, the insulating member 32 being carbonized and burned by high-temperature gases and high-temperature particles, and being blown away by airflow.

[0074] In some embodiments, the portion of the first protective member 33 that extends beyond the electrical connector 31 may also be spaced apart from the first wall portion 211 .

[0075] In some embodiments, the plane where the first sub-protective element 341 is located can be parallel to the plane where the first wall portion 211 is located. Of course, the plane where the first sub-protective element 341 is located can also be tilted relative to the plane where the first wall portion 211 is located. The plane where the second sub-protective element 342 is located can be parallel to the plane where the second wall portion 212 is located. Of course, the plane where the first sub-protective element 341 is located can also be tilted relative to the plane where the second wall portion 212 is located.

[0076] In some embodiments, a first adhesive member (not shown) is provided between the first sub-protection member 341 and the battery cell group 21 and between the second sub-protection member 342 and the battery cell group 21, and the second protective member 34 is fixed to the battery cell group 21 through the first adhesive member, so that the second protective member 34 can be stably fixed to the battery cell group 21 on the one hand; on the other hand, the first adhesive member can block the gap between the first sub-protection member 341 and the battery cell group 21 and the gap between the second sub-protection member 342 and the battery cell group 21, thereby reducing the risk of temperature rise between the second protective member 34 and the battery cell group 21 caused by high-temperature gas or high-temperature particles entering between the second protective member 34 and the battery cell group 21, thereby reducing the risk of thermal runaway of the battery cell group 21. The material of the first adhesive member can be epoxy resin, polyimide resin, bismaleimide resin, phenolic resin, polyester resin or polyurethane resin, but is not limited thereto.

[0077] In some embodiments, the first adhesive may be a thermally conductive adhesive, and the first adhesive can guide the heat of the battery cell group 21 to the first sub-protecting member 341 , thereby improving the heat dissipation efficiency of the battery cell group 21 .

[0078] In some embodiments, a second adhesive member (not shown) is provided between the first sub-protection member 341 and the first protection member 33, which can not only improve the fixing effect of the second protection member 34 on the first protection member 33, but also reduce the risk of temperature rise between the first sub-protection member 341 and the first protection member 33 caused by high-temperature gas or high-temperature particles entering between the first sub-protection member 341 and the first protection member 33. The material of the second adhesive member is epoxy resin, polyimide resin, bismaleimide resin, phenolic resin, polyester resin or polyurethane resin, but is not limited thereto.

[0079] By making the first sub-protective member 341 at least partially cover the side of the first protective member 33 facing away from the first wall portion 211, and at the same time setting the second sub-protective member 342 on the second wall portion 212 and covering at least part of the side end surface of the electrical connector 31 and at least part of the side end surface of the first protective member 33, on the one hand, the first sub-protective member 341 can fix the first protective member 33, thereby reducing the risk of the first protective member 33 being lifted, swung or fallen off under the action of airflow, and at the same time, the second sub-protective member 342 can isolate the battery cell group 21 where it is located and the battery cell group 21 opposite to it, and can be located between the battery cell group 21 where it is located and the battery cell group 21 opposite to it When thermal runaway occurs in one of the battery cell groups 21, the risk of high-temperature gas or high-temperature particulate matter spraying toward the battery cell group 21 where it is located and the other battery cell group 21 opposite to it is blocked, thereby weakening the spread of thermal runaway and improving the reliability of the battery device 100a. On the other hand, the second sub-protective member 342 and the first sub-protective member 341 are covered in the connection area between the first wall portion 211 and the second wall portion 212, which can enhance the connection strength between the first wall portion 211 and the second wall portion 212, thereby improving the overall structural strength of the battery cell group 21, thereby reducing the risk of thermal runaway, short circuit, etc. when the battery cell group 21 is impacted or squeezed.

[0080] In some embodiments, please refer to Figure 7 The first protective member 33 includes two covering areas 331 spaced apart along a first direction XX, a first sub-protective member 341 of a second protective member 34 covers one of the covering areas 331, and a first sub-protective member 341 of another second protective member 34 covers the other covering area 331; wherein, a first dimension of the covering area 331 in a first direction XX perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is: 5mm~10mm, and a second dimension of the covering area 331 in a second direction YY perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is: 5mm~10mm; the first direction XX is perpendicular to the second direction YY.

[0081] The two covering areas 331 of the first protective member 33 are areas where the first protective member 33 is respectively covered by the first sub-protective members 341 of the two second protective members 34, and the covering area 331 is completely covered by the first sub-protective members 341 of the second protective member 34. One of the covering areas 331 is at least partially located on an overlapping area between one end of the electrical connector 31 and an adjacent battery cell group 21, and the other covering area 331 is at least partially located on an overlapping area between the other end of the electrical connector 31 and another adjacent battery cell group 21.

[0082] The direction perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 includes a first direction XX and a second direction YY. The first direction XX is parallel to the arrangement direction of the two battery cell groups 21 connected by the electrical connector 31, and the second direction YY is perpendicular to the first direction XX. The size of the covering area 331 in the first direction XX is the first size, and the first size is: 5mm~10mm; the size of the covering area 331 in the second direction YY is the second size, and the second size is: 5mm~10mm. The sizes of the two covering areas 331 in the first direction XX can be the same, and of course, the sizes of the two covering areas 331 in the first direction XX can also be different; the sizes of the two covering areas 331 in the second direction YY can be the same, and of course, the sizes of the two covering areas 331 in the second direction YY can also be different.

[0083] In some embodiments, the first size of the coverage area 331 in the first direction XX may be the same as the second size of the coverage area 331 in the second direction YY; of course, the first size of the coverage area 331 in the first direction XX may be different from the second size of the coverage area 331 in the second direction YY.

[0084] A first dimension of the covering area 331 in a first direction XX perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 may be 5 mm, 5.25 mm, 5.5 mm, 5.76 mm, 5.885 mm, 6 mm, 6.35 mm, 6. mm, 6.788 mm, 6.9 mm, 7 mm, 7.225 mm, 7.5 mm, 7.67 mm, 7.82 mm, 7.95 mm, 8 mm, 8.35 mm, 8.5 mm, 8.66 mm, 8.88 mm, 9 mm, 9.135 mm, 9.44 mm, 9.78 mm, 10 mm, etc., but is not limited thereto. The specific dimension may be selected according to actual conditions, as long as the first dimension of the covering area 331 in the first direction XX perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is in the range of 5 mm to 10 mm.

[0085] The second dimension of the covering area 331 in the second direction YY perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 may be 5 mm, 5.25 mm, 5.5 mm, 5.76 mm, 5.885 mm, 6 mm, 6.35 mm, 6. mm, 6.788 mm, 6.9 mm, 7 mm, 7.225 mm, 7.5 mm, 7.67 mm, 7.82 mm, 7.95 mm, 8 mm, 8.35 mm, 8.5 mm, 8.66 mm, 8.88 mm, 9 mm, 9.135 mm, 9.44 mm, 9.78 mm, 10 mm, etc., but is not limited thereto. The specific dimension may be selected according to actual conditions, as long as the second dimension of the covering area 331 in the second direction YY perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is in the range of 5 mm to 10 mm.

[0086] By having the first sub-protective members 341 of the two second protective members 34 respectively cover the two covering areas 331 of the first protective member 33 spaced apart along the first direction XX, and at the same time making the first dimension of the covering area 331 in the first direction XX perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 be: 5mm~10mm, and the second dimension of the covering area 331 in the second direction YY perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 be: 5mm~10mm, the second protective member 34 can better fix the first protective member 33, and can reduce the risk of the first protective member 33 being lifted, swung or fallen off due to the action of airflow.

[0087] In some embodiments, please refer to Figure 8 The insulating member 32 has a first end region 326 and a second end region 327 , and one of the first end region 326 and the second end region 327 covers the other of the first end region 326 and the second end region 327 .

[0088] Among them, the insulating member 32 can be in a sheet shape, the insulating member 32 is wrapped around the electrical connector 31, and the size of the insulating member 32 along the wrapping direction is larger than the circumference of the cross section obtained by cutting the electrical connector 31 along the second direction YY, so that one of the first tail area 326 and the second tail area 327 can cover the other of the first tail area 326 and the second tail area 327.

[0089] By making one of the first tail area 326 and the second tail area 327 cover the other of the first tail area 326 and the second tail area 327, the risk of the electrical connector 31 being exposed due to the first tail area 326 and the second tail area 327 curling up due to heat is reduced, and the insulation protection effect of the insulating member 32 on the electrical connector 31 can be improved.

[0090] In some embodiments, the first tail region 326 and the second tail region 327 are located on the side of the electrical connector 31 facing away from the first protective member 33, so that the side of the insulating member 32 facing away from the battery cell group 21 is a flat surface, so that the first protective member 33 and the insulating member 32 can be in close contact, which can improve the stability and reliability of the connection between the first protective member 33 and the insulating member 32.

[0091] In some embodiments, the first tail region 326 and the second tail region 327 are located on the side of the electrical connector 31 facing the first protective member 33, and the first protective member 33 can cover and press one of the first tail region 326 and the second tail region 327, thereby reducing the impact of airflow, high-temperature gas and high-temperature particles on the first tail region 326 and the second tail region 327, and can further reduce the risk of exposure of the electrical connector 31.

[0092] When the first tail region 326 and the second tail region 327 are located on the side of the electrical connector 31 facing the first protective member 33, the end of the first tail region 326 can fit with the end of the second tail region 327. On the one hand, this can reduce the usage of the insulating member 32 and reduce production costs; on the other hand, it can increase the flatness of the side of the insulating member 32 facing away from the battery cell group 21, so that the first protective member 33 and the insulating member 32 can be in close contact, which can improve the stability and reliability of the connection between the first protective member 33 and the insulating member 32.

[0093] In some embodiments, a dimension of the first protection member 33 in the first direction XX is greater than a dimension of the electrical connector 31 in the first direction XX, wherein the first direction XX is parallel to an arrangement direction of two adjacent battery cell groups 21 .

[0094] The two battery cell groups 21 arranged adjacent to each other are also the two battery cell groups 21 connected by the electrical connector 31 .

[0095] In some embodiments, the central axis of the first protective member 33 along the second direction YY and the perpendicular line of the central axis of the electrical connector 31 along the second direction YY are parallel to the stacking direction of the battery cell group 21 and the first protective member 33, so that the first protective member 33 extends beyond the electrical connector 31 on both sides along the first direction XX, and the portions of the first protective member 33 extending beyond the electrical connector 31 on both sides along the first direction XX can be arranged in close contact with the first wall portion 211; of course, the portions of the first protective member 33 extending beyond the electrical connector 31 on both sides along the first direction XX can also be spaced apart from the first wall portion 211.

[0096] By making the size of the first protective member 33 in the first direction XX larger than the size of the electrical connector 31 in the first direction XX, the first protective member 33 can cover the two ends of the electrical connector 31 in the first direction XX. On the one hand, the risks of leakage, short circuit due to contact with other conductors, and corrosion at the two ends of the electrical connector 31 in the first direction XX can be reduced; on the other hand, the risk of high-temperature particles accumulating on the surfaces of the two ends of the electrical connector 31 along the first direction XX facing away from the battery cell group 21 when the battery cell group 21 has thermal runaway, and transferring heat to the other connected battery cell group 21, causing the other connected battery cell group 21 to also have thermal runaway, can be reduced, thereby weakening the spread of thermal runaway and further improving the reliability of the battery device 100a.

[0097] In some embodiments, a dimension of the first protection member 33 in the second direction YY is greater than or equal to a dimension of the electrical connection member 31 in the second direction YY, and the second direction YY is perpendicular to the first direction XX.

[0098] In some embodiments, the perpendicular line between the central axis of the first protective member 33 along the first direction XX and the central axis of the electrical connector 31 along the first direction XX is parallel to the stacking direction of the battery cell group 21 and the first protective member 33, so that the first protective member 33 extends beyond the electrical connector 31 on both sides along the second direction YY, and the portions of the first protective member 33 extending beyond the electrical connector 31 on both sides along the second direction YY can be arranged in close contact with the first wall portion 211; of course, the portions of the first protective member 33 extending beyond the electrical connector 31 on both sides along the second direction YY can also be spaced apart from the first wall portion 211.

[0099] By making the size of the first protective member 33 in the second direction YY larger than the size of the electrical connector 31 in the second direction YY, the first protective member 33 can cover both sides of the electrical connector 31 in the second direction YY. On the one hand, it can reduce the risks of leakage, short circuit due to contact with other conductors, and corrosion of the electrical connector 31 on both sides in the second direction YY. On the other hand, it can reduce the risk of high-temperature particles accumulating on the surfaces of the electrical connector 31 on both sides in the second direction YY facing away from the battery cell group 21 when the battery cell group 21 has thermal runaway, and transferring heat to the other connected battery cell group 21, causing the other connected battery cell group 21 to also have thermal runaway. This can weaken the spread of thermal runaway and further improve the reliability of the battery device 100a.

[0100] In some embodiments, the size of the first protective member 33 in the first direction XX is greater than the size of the electrical connector 31 in the first direction XX, and the size of the first protective member 33 in the second direction YY is greater than or equal to the size of the electrical connector 31 in the second direction YY, so that the positive projection of the electrical connector 31 toward the first protective member 33 is completely located on the first protective member 33, which can not only reduce the risks of leakage of the electrical connector 31, short circuit due to contact with other conductors, and corrosion, but also can further enhance the effect of weakening the spread of thermal runaway, and can further improve the reliability of the battery device 100a.

[0101] In some embodiments, Figures 2 to 7 As shown, the connection assembly 30 includes an electrical connector 31, an insulating member 32 and a first protective member 33, wherein the electrical connector 31 is connected between two adjacent battery cell groups 21; the insulating member 32 is coated on the electrical connector 31 and is located between the two battery cell groups 21 connected to the electrical connector 31; the first protective member 33 is arranged on the side of the electrical connector 31 facing away from the electrical component 20 and on the side of the insulating member 32 facing away from the electrical component 20; the positive projection of the insulating member 32 toward the first protective member 33 is located on the first protective member 33, and the first protective member 33 can be a temperature-resistant insulating protective layer; the size of the first protective member 33 in the first direction XX is greater than the size of the electrical connector 31 in the first direction XX, and the first protective member 33 is The dimension in the second direction YY is equal to the dimension of the electrical connector 31 in the second direction YY; the first protective member 33 includes two covering areas 331 spaced apart along the first direction XX, a first sub-protective member 341 of a second protective member 34 covers one of the covering areas 331, and a first sub-protective member 341 of another second protective member 34 covers the other covering area 331; wherein, a first dimension of the covering area 331 in the first direction XX perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is: 5mm~10mm, and a second dimension of the covering area 331 in the second direction YY perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 is: 5mm~10mm.

[0102] The first direction XX is parallel to the arrangement direction of the two battery cell groups 21 connected by the electrical connector 31 and is perpendicular to the second direction YY. Both the first direction XX and the second direction YY are perpendicular to the stacking direction of the battery cell group 21 and the first protective member 33 .

[0103] In some embodiments, the connecting assembly 30 also includes a plurality of second protective members 34, a portion of the plurality of second protective members 34 is disposed on one of two adjacent battery cell groups 21, and another portion of the plurality of second protective members 34 is disposed on the other of the two adjacent battery cell groups 21; wherein the second protective members 34 are at least partially disposed on a side of the first protective member 33 facing away from the battery cell group 21.

[0104] In some embodiments, Figure 8 As shown, the insulating member 32 has a first tail region 326 and a second tail region 327, one of the first tail region 326 and the second tail region 327 covers the other of the first tail region 326 and the second tail region 327, and the first tail region 326 and the second tail region 327 are located on the side of the electrical connector 31 facing away from the first protective member 33.

[0105] The present application further proposes a connection component, the structure of which can refer to the connection component 30 in the above embodiment, and the connection component 30 can be used in the battery device 100a.

[0106] According to some embodiments of the present application, the battery device 100a can be used on electrical equipment. The electrical connector 31 is connected to the same side of the two electrical components 20 to achieve electrical connection between the two electrical components 20. The insulating member 32 covers the electrical connector 31. The first protective member 33 is arranged on the side of the electrical connector 31 facing away from the electrical component 20 and the side of the insulating member 32 facing away from the electrical component 20, and the positive projection of the insulating member 32 toward the first protective member 33 is located on the first protective member 33. On the one hand, the insulating member 32 plays the role of insulation and blocking liquids, dust and other substances from contacting the electrical connector 31, which can reduce the risks of leakage, short circuit and corrosion of the electrical connector 31. At the same time, the first protective member 33 can press the insulating member 32 and the electrical connector 31 together, and cover the side of the insulating member 32 facing away from the electrical component 20, thereby reducing the risk of the insulating member 32 being carbonized, burned, and blown away by airflow by high-temperature gases and high-temperature particles; on the other hand, the insulating member 32 and the first protective member 33 can block high-temperature gases and high-temperature particles from spraying toward the connected electrical component 20 when thermal runaway occurs in the electrical component 20, so as to weaken the spread of thermal runaway and reduce the risk of fire, explosion, etc. caused by the spread of thermal runaway, thereby improving the reliability of the battery device 100a.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A battery box is formed with a receiving space; A plurality of electrical components, at least a portion of the structure of the electrical components is located in the accommodation space; A connecting component, the connecting component comprising an electrical connector, an insulating component and a first protective component, wherein the electrical connector is connected to the same side of the two electrical components; the insulating component is coated on the electrical connector and is located between the two connected electrical components; the first protective component is arranged on a side of the electrical connector facing away from the electrical components and on a side of the insulating component facing away from the electrical components; the positive projection of the insulating component toward the first protective component is located on the first protective component.

2. The battery device according to claim 1, characterized in that: The electrical component includes a battery cell group, the electrical connector is used to connect two adjacent battery cell groups, and the insulating member is located between the two adjacent battery cell groups.

3. The battery device according to claim 2, characterized in that: The connection assembly further includes a plurality of second protective members, a portion of the plurality of second protective members is disposed on one of the two adjacent battery cell groups, and another portion of the plurality of second protective members is disposed on the other of the two adjacent battery cell groups; The second protective member is at least partially disposed on a side of the first protective member that is away from the battery cell group.

4. The battery device according to claim 3, characterized in that: The battery cell group is provided with a first wall portion and a second wall portion which are perpendicular to each other, the electrical connector is at least partially provided on the first wall portion, and the first protective member is provided on a side of the electrical connector which is away from the first wall portion; The second protective member includes a first sub-protective member and a second sub-protective member connected to the first sub-protective member; the first sub-protective member at least partially covers the side of the first protective member facing away from the first wall portion; the second sub-protective member is arranged on the second wall portion and covers at least part of the side end surface of the electrical connector and at least part of the side end surface of the first protective member.

5. The battery device according to claim 4, characterized in that: The first protective element comprises two covering areas spaced apart along a first direction, the first sub-protecting element of one of the second protective elements covers one of the covering areas, and the first sub-protecting element of another of the second protective elements covers the other of the covering areas; Among them, a first size of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member is: 5mm~10mm, and a second size of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member is: 5mm~10mm; the first direction is perpendicular to the second direction.

6. The battery device according to any one of claims 2 to 5, characterized in that: The insulating member has a first end region and a second end region, and one of the first end region and the second end region covers the other of the first end region and the second end region.

7. The battery device according to any one of claims 2 to 5, characterized in that: A size of the first protection member in a first direction is greater than a size of the electrical connector in the first direction, wherein the first direction is parallel to an arrangement direction of the two adjacent battery cell groups.

8. The battery device according to claim 7, characterized in that: The dimension of the first protection member in the second direction is greater than or equal to the dimension of the electrical connection member in the second direction, and the second direction is perpendicular to the first direction.

9. A connection assembly, characterized in that: The connecting assembly includes an electrical connector, an insulating member and a first protective member, wherein the electrical connector is used to be connected to the same side of two electrical components of a battery device; the insulating member is coated on the electrical connector and is located between the two connected electrical components; the first protective member is used to be arranged on a side of the electrical connector facing away from the electrical components and on a side of the insulating member facing away from the electrical components; the positive projection of the insulating member toward the first protective member is located on the first protective member.

10. The connection assembly according to claim 9, characterized in that The electrical component further includes a battery cell group, the electrical connector is used to connect two adjacent battery cell groups, and the insulating member is located between the two adjacent battery cell groups.

11. The connection assembly according to claim 10, characterized in that The connecting assembly further includes a plurality of second protective members, a portion of the plurality of second protective members is used to be disposed on one of the two adjacent battery cell groups, and another portion of the plurality of second protective members is used to be disposed on the other of the two adjacent battery cell groups; The second protective member is at least partially arranged on a side of the first protective member facing away from the battery cell group.

12. The connection assembly according to claim 11, characterized in that The battery cell group is provided with a first wall portion and a second wall portion which are perpendicular to each other, the electrical connector is at least partially provided on the first wall portion, and the first protective member is provided on a side of the electrical connector which is away from the first wall portion; The second protective member includes a first sub-protective member and a second sub-protective member connected to the first sub-protective member; the first sub-protective member at least partially covers the side of the first protective member facing away from the first wall portion; the second sub-protective member is arranged on the second wall portion and covers at least part of the side end surface of the electrical connector and at least part of the side end surface of the first protective member.

13. The connection assembly according to claim 12, characterized in that The first protective element comprises two covering areas spaced apart along a first direction, the first sub-protecting element of one of the second protective elements covers one of the covering areas, and the first sub-protecting element of another of the second protective elements covers the other of the covering areas; Among them, a first size of the covering area in the first direction perpendicular to the stacking direction of the battery cell group and the first protective member is: 5mm~10mm, and a second size of the covering area in the second direction perpendicular to the stacking direction of the battery cell group and the first protective member is: 5mm~10mm; the first direction is perpendicular to the second direction.

14. An electrical device, wherein: The electrical equipment includes: A battery device as claimed in any one of claims 1 to 8; or a connection assembly as claimed in any one of claims 9 to 13.

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