Battery assembly, battery and electric equipment

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery assembly, a battery and electric equipment.The battery assembly comprises a plurality of battery monomers, at least one first bus piece, at least one second bus piece and an insulating piece, the first bus piece is electrically connected with two different battery monomers and crosses M battery monomers, and the insulating piece is electrically connected with the M battery monomers; m is greater than or equal to zero, the second bus member is respectively connected with two different battery monomers, the second bus member spans N battery monomers, N is greater than M, and an insulating member is arranged between the first bus member and the second bus member which are adjacently arranged, so that the first bus member and the second bus member are insulated. The number of the first confluence pieces crossing the battery monomers is different from the number of the second confluence pieces crossing the battery monomers, so that a voltage difference exists between the first confluence pieces and the second confluence pieces, the insulating pieces are arranged between the first confluence pieces and the second confluence pieces, and the situation of short circuit between the first confluence pieces and the second confluence pieces is reduced.

Description

Technical Field

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

[0002] With the development of new energy, more and more fields are using new energy as a power source. Due to its advantages such as high energy density, rechargeable, safe and environmentally friendly, batteries are widely used in new energy vehicles, consumer electronics, energy storage systems and other fields.

[0003] The battery includes multiple battery cells and multiple busbars, which connect the multiple battery cells in series and / or in parallel. When there is a voltage difference between two adjacent busbars, a short circuit is prone to occur in some cases (for example, when a battery cell below the busbar experiences thermal runaway). Utility Model Content

[0004] In view of the above problems, the present application provides a battery assembly, a battery and an electrical device, which solves the problem that a short circuit is likely to occur when there is a voltage difference between two adjacent busbars.

[0005] The first aspect of the present application provides a battery assembly, the battery assembly comprising:

[0006] Multiple battery cells;

[0007] At least one first busbar, the first busbars electrically connecting two different battery cells respectively, and the first busbar spans M battery cells, where M is greater than or equal to zero;

[0008] at least one second busbar, the second busbars are respectively connected to two different battery cells, the second busbars span N battery cells, and N is greater than M;

[0009] An insulating member is provided between the first busbar and the second busbar that are adjacently arranged, so as to insulate the first busbar and the second busbar.

[0010] Specifically, the number of battery cells spanned by the first busbar is different from the number of battery cells spanned by the second busbar, so that there is a voltage difference between the first busbar and the second busbar. By setting an insulating member between the first busbar and the second busbar, the insulation performance between the first busbar and the second busbar is improved, which can effectively reduce the short circuit between the first busbar and the second busbar.

[0011] In some embodiments of the present application, the melting point of the insulating member is greater than or equal to 300 degrees Celsius.

[0012] Specifically, the melting point of the insulating part is set to be greater than or equal to 300 degrees Celsius, so that the insulating part can have high temperature resistance. When the battery cell has thermal runaway, the possibility of the material ejected by the thermal runaway melting the insulating part is reduced, the insulation performance of the first busbar and the second busbar is further improved, and the short circuit between the first busbar and the second busbar is further reduced.

[0013] In some embodiments of the present application, the insulating member includes an inorganic substance and / or an organic polymer. By setting the insulating member, it is convenient to select the material of the insulating member according to the needs, thereby improving the flexibility of setting the insulating member.

[0014] In some embodiments of the present application, the battery cell includes a pressure relief mechanism, which is arranged on the first surface of the battery cell, and the first busbar and the second busbar are both arranged on one side of the first surface. Along the first direction, the first busbar and the second busbar are both located on the same side of the pressure relief mechanism, and the first direction is the direction from the first busbar to the second busbar and is parallel to the first surface. By arranging the first busbar and the second busbar, the first busbar and the second busbar are both arranged to avoid the pressure relief mechanism, which reduces the obstruction of the first busbar or the second busbar during the opening process of the pressure relief mechanism, and realizes that the pressure relief mechanism can smoothly open the valve.

[0015] In some embodiments of the present application, the minimum distance between the adjacent first and second busbars is in the range of 1 mm to 20 mm. By setting the distance between the first and second busbars, the structure between the first and second busbars can be made compact, which reduces the space occupied by the battery assembly and facilitates the miniaturization of the battery assembly.

[0016] In some embodiments of the present application, at least one of the adjacently arranged first busbar and the second busbar is connected to the insulating member. Specifically, connecting the insulating member to at least one of the first busbar and the second busbar can improve the fixing strength of the insulating member, thereby improving the structural stability of the insulating member, and can further improve the insulation effect of the first busbar and the second busbar.

[0017] In some embodiments of the present application, the insulating member is provided with a first connection end, and the first connection end is connected to the first busbar by bonding or clamping. By setting the connection mode between the first connection end and the first busbar, it can be selected according to assembly requirements, and the connection strength and stability between the insulating member and the first busbar are effectively improved, so that the insulation effect of the first busbar and the second busbar can be further improved.

[0018] In some embodiments of the present application, the insulating member is provided with a second connection end, and the second connection end is connected to the second busbar by bonding or clamping. By setting the connection mode between the second connection end and the second busbar, it can be selected according to assembly requirements, and the connection strength and stability between the insulating member and the second busbar are effectively improved, so that the insulation effect of the first busbar and the second busbar can be further improved.

[0019] In some embodiments of the present application, a first slot is provided on the first connection end, and the edge of the first busbar facing the second busbar is clamped in the first slot. The edge of the first busbar facing the second busbar is clamped in the first slot, so that the edge of the first busbar can be wrapped by the insulating member, thereby further improving the insulation of the first busbar, so that the insulation performance between the first busbar and the second busbar is effectively improved.

[0020] In some embodiments of the present application, a second slot is provided on the second connection end, and the edge of the second busbar facing the first busbar is clamped in the second slot. The edge of the second busbar facing the second busbar is clamped in the second slot, so that the edge of the second busbar can be wrapped by the insulating member, thereby further improving the insulation of the second busbar, so that the insulation performance between the first busbar and the second busbar is effectively improved.

[0021] In some embodiments of the present application, along the first direction, the size of the first slot is greater than zero and less than or equal to 50 mm, and the first direction is the direction from the first busbar to the second busbar. By setting the size of the first slot in the first direction, the edge of the first busbar is effectively insulated, while reducing the possibility of the insulating member interfering with the electrical connection position of the first busbar and the battery cell.

[0022] In some embodiments of the present application, along the first direction, the size of the second slot is greater than zero and less than or equal to 50 mm, and the first direction is the direction from the first busbar to the second busbar. By setting the size of the second slot in the first direction, the edge of the second busbar is effectively insulated, while reducing the possibility of the insulating member interfering with the electrical connection position of the second busbar and the battery cell.

[0023] In some embodiments of the present application, the insulating member is arranged in a filling manner in the area between the first busbar and the second busbar. The insulating member is arranged in a filling manner in the area between the first busbar and the second busbar, thereby improving the convenience of the assembly process and effectively improving the production efficiency.

[0024] In some embodiments of the present application, a first overlap is provided on a side of the insulating member facing away from the battery cell, and the first overlap is overlapped on the first busbar. By providing the first overlap, the insulating area of ​​the insulating member to the first busbar can be increased, and the insulation performance between the first busbar and the second busbar can be further improved.

[0025] In some embodiments of the present application, a second overlap is provided on a side of the insulating member facing away from the battery cell, the second overlap is overlapped on the second busbar, and along the first direction, the second overlap and the first overlap are respectively provided on opposite sides of the insulating member. By providing the second overlap, the insulating area of ​​the insulating member to the second busbar can be increased, and the insulation performance between the first busbar and the second busbar can be further improved.

[0026] In some embodiments of the present application, along the first direction, the size of the first overlap is greater than zero and less than or equal to 50 mm, and the first direction is the direction from the first busbar to the second busbar. By setting the size of the first overlap in the first direction, the edge of the first busbar is effectively insulated, while reducing the possibility of the insulating member interfering with the electrical connection position of the first busbar and the battery cell.

[0027] In some embodiments of the present application, along the first direction, the size of the second overlap is greater than zero and less than or equal to 50 mm, and the first direction is the direction from the first busbar to the second busbar. By setting the size of the second overlap in the first direction, the edge of the second busbar is effectively insulated, while reducing the possibility of the insulating member interfering with the electrical connection position of the second busbar and the battery cell.

[0028] In some embodiments of the present application, the insulating member includes a first insulating layer, and the first insulating layer is provided on one end of the first busbar facing the second busbar by spraying or coating. The first insulating layer is provided on one end of the first busbar facing the second busbar by spraying or coating, so as to facilitate processing and manufacturing, thereby effectively improving processing efficiency.

[0029] In some embodiments of the present application, the insulating member includes a second insulating layer, and the second insulating layer is provided on one end of the second busbar facing the first busbar by spraying or coating. The second insulating layer is provided on one end of the second busbar facing the first busbar by spraying or coating, so as to facilitate processing and manufacturing, thereby effectively improving processing efficiency.

[0030] In some embodiments of the present application, the thickness of the first insulating layer is in the range of 0.1 mm to 5 mm. By setting the thickness of the first insulating layer, the cost of the insulating member can be effectively reduced while maintaining good insulation performance of the first busbar.

[0031] In some embodiments of the present application, the thickness of the second insulating layer is in the range of 0.1 mm to 5 mm. By setting the thickness of the second insulating layer, the cost of the insulating member can be effectively reduced while maintaining good insulation performance of the first busbar.

[0032] A second aspect of the present application provides a battery, comprising the battery assembly as described above.

[0033] Specifically, the number of battery cells spanned by the first busbar of the battery assembly is different from the number of battery cells spanned by the second busbar, so that there is a voltage difference between the first busbar and the second busbar. By setting an insulating member between the first busbar and the second busbar, the insulation performance between the first busbar and the second busbar is improved, which can effectively reduce the short circuit between the first busbar and the second busbar.

[0034] A third aspect of the present application provides an electrical device, which includes the battery as described above.

[0035] Specifically, in the battery, the number of battery cells spanned by the first busbar of the battery assembly is different from the number of battery cells spanned by the second busbar, so that there is a voltage difference between the first busbar and the second busbar. By setting an insulating member between the first busbar and the second busbar, the insulation performance between the first busbar and the second busbar is improved, which can effectively reduce the short circuit between the first busbar and the second busbar.

[0036] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of a vehicle according to an embodiment of the present application is shown schematically;

[0038] Figure 2 The structure diagram of a battery according to one embodiment of the present application is schematically shown;

[0039] Figure 3 Schematically shows a schematic structural diagram of a battery assembly according to an embodiment of the present application;

[0040] Figure 4 for Figure 3 A cross-sectional view of a battery assembly AA in some embodiments shown in FIG.

[0041] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part B in the structure shown in ;

[0042] Figure 6 for Figure 3 A cross-sectional view of a battery assembly AA in some embodiments shown in FIG.

[0043] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of part B in the structure shown in FIG.

[0044] Figure 8 Schematically shows a schematic structural diagram of a battery assembly according to an embodiment of the present application;

[0045] Fig. 9 for Figure 8 A cross-sectional view of CC of the battery assembly shown in ;

[0046] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part D in the structure shown in .

[0047] The reference numerals are as follows:

[0048] 1000. Vehicles;

[0049] 100, battery; 200, controller; 300, motor;

[0050] 10. Battery components;

[0051] 11. Battery cells;

[0052] 111. electrode terminal; 112. pressure relief mechanism; 113. first surface;

[0053] 12. A first busbar;

[0054] 13. Second busbar;

[0055] 14. Insulation parts;

[0056] 141, first card slot; 142, second card slot; 143, first overlap; 144, second overlap; 145, first insulating layer; 146, second insulating layer; 147, first connecting end; 148, second connecting end;

[0057] 20. Box body;

[0058] 21. Part I; 22. Part II;

[0059] a. First direction; b. Second direction. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0063] 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.

[0064] 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.

[0065] 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).

[0066] 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.

[0067] 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 connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0068] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0069] In the related art, the battery includes a plurality of battery cells and a plurality of busbars, and the plurality of busbars connect the plurality of battery cells in series and / or in parallel. When there is a voltage difference between two adjacent busbars, a short circuit is prone to occur in some cases (for example, when a battery cell under the busbar experiences thermal runaway).

[0070] In the present application, the battery assembly includes a plurality of battery cells, at least one first busbar, at least one second busbar and an insulating member, the first busbar electrically connects two different battery cells respectively, and the first busbar spans M battery cells, M is greater than or equal to zero, the second busbar connects two different battery cells respectively, and the second busbar spans N battery cells, N is greater than M, and an insulating member is provided between the adjacent first busbar and the second busbar, so that the first busbar and the second busbar are insulated from each other. The number of battery cells spanned by the first busbar is different from the number of battery cells spanned by the second busbar, so that there is a voltage difference between the first busbar and the second busbar, and by providing an insulating member between the first busbar and the second busbar, the insulation performance between the first busbar and the second busbar is improved, which can effectively reduce the occurrence of a short circuit between the first busbar and the second busbar.

[0071] The battery involved in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells, batteries, etc. involved in the present application can be used to form the electrical device.

[0072] In the embodiments of the present application, the electric devices using batteries as power sources may be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0073] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0074] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0075] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0076] Figure 2 The schematic diagram of the structure of a battery 100 according to an embodiment of the present application is shown. In order to meet different power requirements, the battery 100 may include a plurality of battery assemblies 10, which may be connected in series, in parallel, or in mixed series (mixed series refers to a mixture of series and parallel connections) and arranged in a housing 20 to form the battery 100.

[0077] The box 20 is used to provide a storage space for the battery assembly 10, and the box 20 can adopt a variety of structures. In some embodiments, the box 20 may include a first part 21 and a second part 22, the first part 21 and the second part 22 cover each other, and the first part 21 and the second part 22 jointly define a storage space for accommodating the battery assembly 10. The second part 22 may be a hollow structure with one end open, and the first part 21 may be a plate-like structure, and the first part 21 covers the open side of the second part 22, so that the first part 21 and the second part 22 jointly define a storage space; the first part 21 and the second part 22 may also be hollow structures with one side open, and the open side of the first part 21 covers the open side of the second part 22. Of course, the box 20 formed by the first part 21 and the second part 22 may be in a variety of shapes, such as a cylinder, a cuboid, etc. In addition, the material of the box body 20 can be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, etc., or a composite material such as glass fiber plus epoxy resin, which is not limited in the embodiment of the present application.

[0078] like Figure 3 As shown, in the present application, the battery assembly 10 includes a plurality of battery cells 11 and a plurality of busbars. The battery cell 11 refers to the smallest unit constituting the battery assembly 10. A plurality of battery cells 11 can be connected in series, in parallel, or in mixed connection (mixed connection means that a plurality of battery cells 11 are both connected in series and in parallel) to form a battery assembly 10. The busbar is a component that can connect a plurality of battery cells 11 in series or in parallel to achieve electrical connection between the plurality of battery cells 11. The busbar can also be referred to as a busbar, a bar or a busbar, which is generally a metal sheet that can be welded to the electrode terminal 111 of the battery cell 11 to connect a plurality of battery cells 11 in series or in parallel. A plurality of battery cells 11 can be directly connected in series, in parallel, or in mixed connection through a busbar assembly. Each battery cell 11 can be a secondary battery 100 or a primary battery 100; it can also be a lithium-sulfur battery 100, a sodium-ion battery 100, or a magnesium-ion battery 100, but is not limited thereto. The battery cell 11 can be cylindrical, flat, rectangular, or in other shapes.

[0079] The battery cell 11 may contain one or more battery cell assemblies, which are components in the battery cell 11 where electrochemical reactions occur. The adapter is a component in the battery cell 11 that transmits current. The battery cell assembly is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a diaphragm is usually provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the battery cell assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials are each provided with a pole ear. The positive pole ear and the negative pole ear can be located together at one end of the main body or respectively at both ends of the main body. During the charging and discharging process of the battery 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the adapter is connected between the pole ear and the electrode terminal 111 to form a current loop.

[0080] In some embodiments, the battery cell 11 may be provided with functional components such as electrode terminals 111. The electrode terminals 111 may be used to electrically connect the battery cell assembly and the busbar to output or input electrical energy of the battery cell 11. In some embodiments, the battery cell 11 may also be provided with a pressure relief mechanism 112 for releasing the internal pressure when the internal pressure or temperature of the battery cell 11 reaches a threshold value.

[0081] In some embodiments of the present application, Figures 2 to 10 As shown, a battery assembly 10 is proposed, which includes a plurality of battery cells 11, at least one first bus 12, at least one second bus 13 and an insulating member 14, wherein the first bus 12 electrically connects two different battery cells 11 respectively, and the first bus 12 spans M battery cells 11, where M is greater than or equal to zero, the second bus 13 electrically connects two different battery cells 11 respectively, and the second bus 13 spans N battery cells 11, where N is greater than M, and an insulating member 14 is provided between the adjacent first bus 12 and the second bus 13 to insulate the first bus 12 and the second bus 13.

[0082] Specifically, the number of battery cells 11 spanned by the first busbar 12 is different from the number of battery cells 11 spanned by the second busbar 13, so that a voltage difference exists between the first busbar 12 and the second busbar 13. The first busbar 12 and the second busbar 13 are arranged at intervals, and the distance between the first busbar 12 and the second busbar 13 meets the requirements of creepage insulation.

[0083] The first busbar 12 and the second busbar 13 are both disposed above the battery cell 11, and the pressure relief mechanism 112 of the battery cell 11 is disposed toward one side of the first busbar 12 and the second busbar 13. When a battery cell 11 near the first busbar 12 or the second busbar 13 experiences thermal runaway, the pressure relief mechanism 112 of the battery cell 11 experiencing thermal runaway opens to release high-temperature substances, and when the high-temperature substances (including the conductive medium) ejected from the pressure relief mechanism 112 accumulate between the first busbar 12 and the second busbar 13, it is easy to cause a short circuit between the first busbar 12 and the second busbar 13.

[0084] In the present application, an insulating member 14 is arranged between the first bus 12 and the second bus 13, and the insulating member 14 is used to block the substances sprayed out during the pressure relief process of the battery cell 11, thereby improving the insulation performance between the first bus 12 and the second bus 13, and can effectively reduce the short circuit between the first bus 12 and the second bus 13.

[0085] It should be pointed out that, multiple battery cells 11 are arranged along the second direction b, and the first bus 12 is arranged across M battery cells 11 in the second direction b, where the value of M can be zero, one, two, three, four, five, six, seven, eight, etc., and the second bus 13 is arranged across N battery cells 11 in the second direction b, where the value of N is greater than M, and can be two, three, four, five, six, seven, eight, etc.

[0086] In addition, one end of the first busbar is electrically connected to the electrode terminal 111 of one battery cell 11 by welding, clamping or connecting via a fastener, and the other end of the first busbar is electrically connected to the electrode terminal 111 of another battery cell 11 by welding, clamping or connecting via a fastener. One end of the second busbar is electrically connected to the electrode terminal 111 of one battery cell 11 by welding, clamping or connecting via a fastener, and the other end of the second busbar is electrically connected to the electrode terminal 111 of another battery cell 11 by welding, clamping or connecting via a fastener.

[0087] In addition, the number of the first busbar components can be one, two, three, four, five, six, seven, eight, etc., and the number of the second busbar components can also be one, two, three, four, five, six, seven, eight, etc.

[0088] In some embodiments of the present application, the melting point of the insulating member 14 is greater than or equal to 300 degrees Celsius.

[0089] Specifically, the melting point of the insulating member 14 is set to be greater than or equal to 300 degrees Celsius, so that the insulating member 14 can have high temperature resistance. When the battery cell 11 has thermal runaway, the possibility of the material ejected by the thermal runaway melting the insulating member 14 is reduced, and the insulation performance of the first bus 12 and the second bus 13 is further improved, and the short circuit between the first bus 12 and the second bus 13 is further reduced.

[0090] It should be pointed out that, in the present application, the melting point of the insulating member 14 may be 300 degrees Celsius, 330 degrees Celsius, 350 degrees Celsius, 380 degrees Celsius, 400 degrees Celsius, 430 degrees Celsius, 450 degrees Celsius, 480 degrees Celsius, 500 degrees Celsius, etc.

[0091] In some embodiments of the present application, the insulating member 14 includes an inorganic substance, an organic polymer, or an inorganic-organic composite polymer.

[0092] Specifically, by setting the insulating member 14 , it is convenient to select the material of the insulating member 14 according to the needs, thereby improving the flexibility of setting the insulating member 14 .

[0093] In the present application, the inorganic substance may be mica, glass fiber, magnesium oxide, ferric oxide, calcium oxide, zirconium oxide, silicon oxide, etc., and the organic substance may be polyimide, polytetrafluoroethylene, and other high melting point organic polymers.

[0094] In some embodiments of the present application, the battery cell 11 includes a pressure relief mechanism 112, which is disposed on a first surface 113 of the battery cell. The first bus 12 and the second bus 13 are both disposed on one side of the first surface 113. Along a first direction a, the first bus 12 and the second bus 13 are both located on the same side of the pressure relief mechanism 112. The first direction a is the direction from the first bus 12 to the second bus 13 and is parallel to the first surface 113.

[0095] By arranging the first conduit 12 and the second conduit 13 so that the first conduit 12 and the second conduit 13 are both arranged to avoid the pressure relief mechanism 112, the obstruction of the first conduit 12 or the second conduit 13 during the opening of the pressure relief mechanism 112 is reduced, and the pressure relief mechanism 112 can smoothly open the valve.

[0096] It should be noted that the second direction b is perpendicular to the first direction a, and at the same time, the second direction is parallel to the first surface 113 .

[0097] In some embodiments of the present application, the minimum distance between the adjacently disposed first busbar 12 and the second busbar 13 is in the range of 1 mm to 20 mm.

[0098] Specifically, by setting the distance between the first busbar and the second busbar, the structure between the first busbar and the second busbar can be made compact, thereby reducing the space occupied by the battery assembly 10 and facilitating miniaturization of the battery assembly 10 .

[0099] It should be pointed out that the minimum distance between the adjacent first bus 12 and the second bus 13 is 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 39 mm, and 30 mm.

[0100] In some embodiments of the present application, at least one of the first current bus 12 and the second current bus 13 that are adjacently disposed is connected to the insulating member 14 .

[0101] Specifically, the insulating member 14 is arranged between the adjacent first bus 12 and the second bus 13, wherein the insulating member 14 can be connected only to the first bus 12, the insulating member 14 can also be connected only to the second bus 13, or the insulating member 14 can also be connected to the first bus 12 and the second bus 13 respectively.

[0102] Connecting the insulating member 14 to at least one of the first bus 12 and the second bus 13 can improve the fixing strength of the insulating member 14, thereby improving the structural stability of the insulating member 14, so that the insulating member 14 can be effectively maintained between the first bus 12 and the second bus 13, thereby further improving the insulation effect on the first bus 12 and the second bus 13.

[0103] In some embodiments of the present application, a first connection end 147 is provided on the insulating member 14 , and the first connection end 147 is connected to the first busbar 12 by bonding or clamping.

[0104] Specifically, the insulating member 14 is disposed between the first bus 12 and the second bus 13, and the first connection end 147 on the insulating member 14 is disposed facing the first bus 12. The first connection end 147 of the insulating member 14 is connected to the first bus 12 by bonding or clamping, and the connection mode between the first connection end 147 and the first bus 12 is set so as to be selected according to assembly requirements.

[0105] At the same time, the bonding or clamping connection method has high structural strength, which can effectively improve the connection strength and stability between the insulating member 14 and the first busbar 12, so that the insulation effect of the first busbar 12 and the second busbar 13 can be further improved.

[0106] In some embodiments of the present application, a second connection end 148 is provided on the insulating member 14 , and the second connection end 148 is connected to the second busbar 13 by bonding or clamping.

[0107] Specifically, the insulating member 14 is disposed between the first busbar 12 and the second busbar 13, and the second connection end 148 on the insulating member 14 is disposed facing the second busbar 13. The second connection end 148 of the insulating member 14 is connected to the second busbar 13 by bonding or clamping, and the connection mode between the second connection end 148 and the second busbar 13 can be selected according to assembly requirements.

[0108] At the same time, the bonding or clamping connection method has high structural strength, which can effectively improve the connection strength and stability between the insulating member 14 and the second busbar 13, so that the insulation effect of the first busbar 12 and the second busbar 13 can be further improved.

[0109] In some embodiments of the present application, Figures 3 to 5 As shown, a first slot 141 is provided on the first connecting end 147 , and the edge of the first busbar 12 facing the second busbar 13 is snapped into the first slot 141 .

[0110] Specifically, a first card slot 141 is provided at one end of the insulating member 14 facing the first bus 12, and the spacing direction from the first bus 12 to the second bus 13 is the depth direction of the first card slot 141. The edge of the first bus 12 facing the second bus 13 is inserted into the first card slot 141, so that the edge of the first bus 12 can be wrapped by the insulating member 14, thereby further improving the insulation of the first bus 12, and effectively improving the insulation performance between the first bus 12 and the second bus 13.

[0111] It should be noted that when the edge of the first collector 12 facing the second collector 13 is arranged inside the first slot 141, the first collector 12 and the first slot 141 can be clearance-fitted, interference-fitted, or connected by an adhesive.

[0112] In some embodiments of the present application, Figures 3 to 5 As shown, a second slot 142 is formed on the second connecting end 148 , and the second busbar 13 is snapped into the second slot 142 at an edge facing the first busbar 12 .

[0113] Specifically, a second slot 142 is provided at one end of the insulating member 14 facing the second bus 13, and the spacing direction from the second bus 13 to the first bus 12 is the depth direction of the second slot 142. The second bus 13 is inserted into the first slot 141 toward the edge of the second bus 13, so that the edge of the second bus 13 can be wrapped by the insulating member 14, thereby further improving the insulation of the second bus 13, and effectively improving the insulation performance between the first bus 12 and the second bus 13.

[0114] It should be noted that when the edge of the first collector 12 facing the second collector 13 is arranged inside the first slot 141, the first collector 12 and the first slot 141 can be clearance-fitted, interference-fitted, or connected by an adhesive.

[0115] In some embodiments of the present application, along the first direction a, the size of the first slot 141 is greater than zero and less than or equal to 50 mm, and the first direction a is the direction from the first busbar 12 to the second busbar 13 .

[0116] Specifically, the edge of the first busbar 12 is embedded in the first slot 141 of the insulating member 14 , and the edge of the first busbar 12 is wrapped by the first slot 141 of the insulating member 14 . The depth of the first slot 141 is consistent with the first direction a.

[0117] By setting the size of the first card slot 141 in the first direction a, the side wall of the first card slot 141 has a sufficient size to effectively wrap the edge of the first busbar 12, thereby effectively insulating the edge of the first busbar 12 and reducing the possibility of the insulating part 14 interfering with the electrical connection position between the first busbar 12 and the battery cell 11.

[0118] It should be pointed out that along the first direction a, the size of the first card slot 141 is 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 39 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm.

[0119] In some embodiments of the present application, along the first direction a, the size of the second slot 142 is greater than zero and less than or equal to 50 mm, and the first direction a is the direction from the first busbar 12 to the second busbar 13 .

[0120] Specifically, the edge of the second busbar 13 is embedded in the second slot 142 of the insulating member 14 , and the edge of the second busbar 13 is wrapped by the second slot 142 of the insulating member 14 . The depth of the second slot 142 is consistent with the first direction a.

[0121] By setting the size of the second card slot 142 in the first direction a, the side wall of the first card slot 141 has a sufficient size to effectively wrap the edge of the first busbar 12, thereby effectively insulating the edge of the second busbar 13 and reducing the possibility of the insulating part 14 interfering with the electrical connection position between the second busbar 13 and the battery cell 11.

[0122] It should be pointed out that along the first direction a, the size of the second card slot 142 is 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 39 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm.

[0123] In some embodiments of the present application, Figure 6 and Figure 7 As shown, the insulating element 14 is arranged in a filling or cast manner in the region between the first current rail 12 and the second current rail 13 .

[0124] Specifically, when the insulating member 14 needs to be disposed between the first bus bar 12 and the second bus bar 13 , the insulating member 14 may be disposed between the first bus bar 12 and the second bus bar 13 in a filling or pouring manner.

[0125] When the insulating member 14 is arranged between the first bus 12 and the second bus 13 in a filling manner, the insulating member 14 (particles or powder) is first filled between the first bus 12 and the second bus 13, and then organic glue (high temperature resistant) is injected between the first bus 12 and the second bus 13, and the insulating member 14 is fixed between the first bus 12 or the second bus 13 using the organic glue.

[0126] When the insulating member 14 is disposed between the first busbar 12 and the second busbar 13 by casting, the insulating member 14 (particles or powder) is first mixed with an organic glue (high temperature resistant), and then the mixed glue is injected between the first busbar 12 and the second busbar 13 .

[0127] The insulating member 14 is arranged in the area between the first busbar 12 and the second busbar 13 by filling or pouring, thereby improving the convenience in the assembly process and effectively improving the production efficiency.

[0128] In some embodiments of the present application, Figure 7 As shown, a first overlap 143 is provided on a side of the insulating member 14 facing away from the battery cell 11 , and the first overlap 143 is overlapped on the first current bus 12 .

[0129] Specifically, the insulating member 14 is arranged between the first bus 12 and the second bus 13 by filling or pouring. By setting the first overlap 143, the insulating area of ​​the insulating member 14 to the first bus 12 can be increased, thereby further improving the insulation performance between the first bus 12 and the second bus 13.

[0130] In some embodiments of the present application, Figure 7 As shown, a second overlap 144 is provided on a side of the insulating member 14 facing away from the battery cell 11 . The second overlap 144 overlaps the second current collector 13 . Along the first direction, the second overlap 144 and the first overlap 143 are respectively arranged on opposite sides of the insulating member.

[0131] Specifically, the insulating member 14 is arranged between the first bus 12 and the second bus 13 by filling or pouring, and the second overlap 144 is provided, so that the insulating area of ​​the insulating member 14 to the second bus 13 can be increased, thereby further improving the insulation performance between the first bus 12 and the second bus 13.

[0132] In some embodiments of the present application, along the first direction a, the size of the first overlapping edge 143 is greater than zero and less than or equal to 50 mm, and the first direction a is the direction from the first busbar 12 to the second busbar 13 .

[0133] Specifically, by setting the size of the first overlap 143 in the first direction a, the edge of the first busbar 12 is effectively insulated, while reducing the possibility that the insulating member 14 interferes with the electrical connection position between the first busbar 12 and the battery cell 11 .

[0134] It should be pointed out that along the first direction a, the dimensions of the first overlapping edge 143 are 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 39 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm.

[0135] In some embodiments of the present application, along the first direction a, the size of the second overlapping edge 144 is greater than zero and less than or equal to 50 mm, and the first direction a is the direction from the first busbar 12 to the second busbar 13 .

[0136] Specifically, by setting the size of the second overlap 144 in the first direction a, the edge of the second busbar 13 is effectively insulated, while the possibility of the insulating member 14 interfering with the electrical connection position between the second busbar 13 and the battery cell 11 is reduced.

[0137] It should be pointed out that along the second direction, the dimensions of the second overlapping edge 144 are 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 39 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm.

[0138] In some embodiments of the present application, Fig.10 As shown, the insulating member 14 includes a first insulating layer 145 , and the first insulating layer 145 is provided on one end of the first busbar 12 facing the second busbar 13 by spraying or coating.

[0139] Specifically, a first insulating layer 145 is provided on one end of the first busbar 12 facing the second busbar 13 by spraying or coating, so as to facilitate processing and manufacturing, thereby effectively improving processing efficiency.

[0140] In some embodiments of the present application, Fig.10 As shown, the insulating member 14 includes a second insulating layer 146 , and the second insulating layer 146 is provided on one end of the second busbar 13 facing the first busbar 12 by spraying or coating.

[0141] Specifically, a second insulating layer 146 is provided on one end of the second busbar 13 facing the first busbar 12 by spraying or coating, so as to facilitate processing and manufacturing, thereby effectively improving processing efficiency.

[0142] In some embodiments of the present application, the thickness of the first insulating layer 145 is in the range of 0.1 mm to 5 mm. By setting the thickness of the first insulating layer 145, the cost of the insulating member 14 can be effectively reduced while maintaining the good insulation performance of the first busbar 12.

[0143] It should be noted that the thickness of the first insulating layer 145 is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2. .4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 3.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm.

[0144] In some embodiments of the present application, the thickness of the second insulating layer 146 is in the range of 0.1 mm to 5 mm. By setting the thickness of the second insulating layer 146, the cost of the insulating member 14 can be effectively reduced while maintaining the good insulation performance of the first busbar 12.

[0145] It should be noted that the thickness of the second insulating layer 146 is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2. .4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 3.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm.

[0146] like Figures 2 to 10 As shown, the second aspect of the present application proposes a battery 100 , and the battery 100 includes the battery assembly 10 according to the above.

[0147] Specifically, the number of battery cells 11 spanned by the first bus 12 of the battery assembly 10 is different from the number of battery cells 11 spanned by the second bus 13, so that there is a voltage difference between the first bus 12 and the second bus 13. By setting an insulating member 14 between the first bus 12 and the second bus 13, the insulation performance between the first bus 12 and the second bus 13 is improved, and the short circuit between the first bus 12 and the second bus 13 can be effectively reduced.

[0148] like Figures 1 to 10 As shown, the third aspect of the present application proposes an electrical device, which includes the battery 100 as described above.

[0149] Specifically, in the battery 100, the number of battery cells 11 spanned by the first bus 12 of the battery assembly 10 is different from the number of battery cells 11 spanned by the second bus 13, so that there is a voltage difference between the first bus 12 and the second bus 13. By setting an insulating member 14 between the first bus 12 and the second bus 13, the insulation performance between the first bus 12 and the second bus 13 is improved, and the short circuit between the first bus 12 and the second bus 13 can be effectively reduced.

[0150] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0151] In the implementation mode of the present application, Figures 2 to 10 As shown, the present application proposes a battery assembly 10 including a plurality of battery cells 11, at least one first busbar 12, at least one second busbar 13 and an insulating member 14, wherein the first busbar 12 electrically connects two different battery cells 11 respectively, and the first busbar 12 spans M battery cells 11, where M is greater than or equal to zero, the second busbar 13 connects two different battery cells 11 respectively, and the second busbar 13 spans N battery cells 11, where N is greater than M, and an insulating member 14 is provided between the adjacent first busbar 12 and the second busbar 13, so that the first busbar 12 and the second busbar 13 are insulated. The melting point of the insulating member 14 is greater than or equal to 300 degrees Celsius.

[0152] Furthermore, the insulating member 14 includes an inorganic substance and / or an organic polymer.

[0153] Furthermore, the battery cell 11 includes a pressure relief mechanism 112, which is arranged on the first surface 113 of the battery cell. The first bus 12 and the second bus 13 are both arranged on one side of the first surface 113. Along the first direction a, the first bus 12 and the second bus 13 are both located on the same side of the pressure relief mechanism 112. The first direction a is the direction from the first bus 12 to the second bus 13 and is parallel to the first surface 113.

[0154] In some implementations of this embodiment, a first slot 141 is provided on the first connection end 147 of the insulating member 14, and the edge of the first busbar 12 facing the second busbar 13 is snapped into the first slot 141. A second slot 142 is provided on the second connection end 148 of the insulating member 14, and the edge of the second busbar 13 facing the first busbar 12 is snapped into the second slot 142.

[0155] Further, along the first direction a, the size of the first card slot 141 is greater than zero and less than or equal to 50 mm, and along the first direction a, the size of the second card slot 142 is greater than zero and less than or equal to 50 mm.

[0156] In some implementations of this embodiment, the insulating member 14 is disposed in a filling or pouring manner in the region between the first busbar 12 and the second busbar 13. A first overlap 143 is provided on the side of the insulating member 14 facing away from the battery cell 11, and the first overlap 143 overlaps the first busbar 12. A second overlap 144 is provided on the side of the insulating member 14 facing away from the battery cell 11, and the second overlap 144 overlaps the second busbar 13.

[0157] Furthermore, along the first direction a, the size of the first overlap 143 is greater than zero and less than or equal to 50 mm, and the size of the second overlap 144 is greater than zero and less than or equal to 50 mm. The first direction a is the direction from the first busbar 12 to the second busbar 13 .

[0158] In some implementations of this embodiment, the insulating member 14 includes a first insulating layer 145, and the end of the first bus 12 facing the second bus 13 is provided with the first insulating layer 145 by spraying or coating. The insulating member 14 includes a second insulating layer 146, and the end of the second bus 13 facing the first bus 12 is provided with the second insulating layer 146 by spraying or coating.

[0159] Further, the thickness of the first insulating layer 145 is in the range of 0.1 mm to 5 mm. The thickness of the second insulating layer 146 is in the range of 0.1 mm to 5 mm.

[0160] In the present application, an insulating member 14 is arranged between the first bus 12 and the second bus 13, and the insulating member 14 is used to block the substances sprayed out during the pressure relief process of the battery cell 11, thereby improving the insulation performance between the first bus 12 and the second bus 13, and can effectively reduce the short circuit between the first bus 12 and the second bus 13.

[0161] 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 assembly, characterized in that: The battery assembly comprises: Multiple battery cells; At least one first busbar, wherein the first busbar is electrically connected to two different battery cells respectively, and the first busbar spans M battery cells, where M is greater than or equal to zero; at least one second busbar, wherein the second busbar is respectively connected to two different battery cells, and the second busbar spans N battery cells, where N is greater than M; An insulating member is provided between the first busbar and the second busbar that are adjacently arranged, so as to insulate the first busbar from the second busbar.

2. The battery assembly according to claim 1, characterized in that The melting point of the insulating member is greater than or equal to 300 degrees Celsius.

3. The battery assembly according to claim 1, characterized in that The insulating member includes an inorganic substance and / or an organic polymer.

4. The battery assembly according to claim 1, wherein: The battery cell includes a pressure relief mechanism, the pressure relief mechanism is arranged on a first surface of the battery cell, the first busbar and the second busbar are both arranged on one side of the first surface, along a first direction, the first busbar and the second busbar are both located on the same side of the pressure relief mechanism, the first direction is a direction from the first busbar to the second busbar and is parallel to the first surface; And / or, a minimum distance between the first busbar and the second busbar that are adjacently arranged is in a range of 1 mm to 20 mm.

5. The battery assembly according to any one of claims 1 to 4, characterized in that: At least one of the first current busbar and the second current busbar that are adjacently disposed is connected to the insulating member.

6. The battery assembly according to claim 5, characterized in that: The insulating member is provided with a first connecting end, and the first connecting end is connected to the first current collector by bonding or clamping.

7. The battery assembly according to claim 6, characterized in that The insulating member is provided with a second connecting end, and the second connecting end is connected to the second current collector by bonding or clamping.

8. The battery assembly according to claim 7, characterized in that: A first clamping groove is provided on the first connecting end, and the edge of the first busbar facing the second busbar is clamped in the first clamping groove.

9. The battery assembly according to claim 8, characterized in that: The second connecting end is provided with a second clamping groove, and the second busbar is clamped in the second clamping groove with an edge of the second busbar facing the first busbar.

10. The battery assembly according to claim 9, characterized in that Along a first direction, a size of the first slot is greater than zero and less than or equal to 50 mm, and the first direction is a direction from the first busbar to the second busbar; And / or, along a first direction, a size of the second slot is greater than zero and less than or equal to 50 mm, and the first direction is a direction from the first busbar to the second busbar.

11. The battery assembly according to claim 5, characterized in that: The insulating member is arranged in a filling manner in a region between the first current busbar and the second current busbar.

12. The battery assembly according to claim 11, characterized in that A first overlapping edge is provided on a side of the insulating member facing away from the battery cell, and the first overlapping edge is overlapped on the first current busbar.

13. The battery assembly according to claim 12, characterized in that: A second overlap is provided on the side of the insulating member facing away from the battery cell, and the second overlap is overlapped on the second bus bar. Along a first direction, the second overlap and the first overlap are respectively arranged on opposite sides of the insulating member, and the first direction is the direction from the first bus bar to the second bus bar.

14. The battery assembly according to claim 13, wherein: Along a first direction, a size of the first overlap is greater than zero and less than or equal to 50 mm, and the first direction is a direction from the first busbar to the second busbar; And / or, along a first direction, a size of the second overlapping edge is greater than zero and less than or equal to 50 mm, and the first direction is a direction from the first busbar to the second busbar.

15. The battery assembly according to claim 5, characterized in that: The insulating member includes a first insulating layer, and the first insulating layer is provided on one end of the first busbar facing the second busbar by spraying or coating.

16. The battery assembly according to claim 15, characterized in that The insulating member includes a second insulating layer, and the second insulating layer is provided on one end of the second busbar facing the first busbar by spraying or coating.

17. The battery assembly according to claim 16, wherein: The thickness of the first insulating layer is in the range of 0.1 mm to 5 mm; And / or the thickness of the second insulating layer is in the range of 0.1 mm to 5 mm.

18. A battery, characterized in that: The battery comprises the battery assembly according to any one of claims 1 to 17.

19. An electrical equipment, characterized in that: The electric device comprises the battery according to claim 18.

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