Battery and electric device

Abstract

The embodiment of the invention provides a battery and an electric device. The reliability of the battery can be improved. The battery comprises a plurality of battery monomers, the plurality of battery monomers are arranged in a matrix along a first direction and a second direction, and the first direction is perpendicular to the second direction; the insulating part comprises a first insulating part extending along the first direction and a second insulating part extending along the second direction, the first insulating part is fixedly connected with the plurality of battery monomers arranged along the first direction, and the second insulating part is fixedly connected with the plurality of battery monomers arranged along the second direction.

Description

Technical Field

[0001] The present application relates to the field of batteries, and more specifically, to a battery and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] With the development of battery technology, various performances of batteries are constantly improving, among which the reliability of batteries is particularly important. If the reliability of the battery cannot be guaranteed, the battery cannot be used. Therefore, how to improve the reliability of batteries is still a problem that needs to be solved. Summary of the invention

[0004] The embodiments of the present application provide a battery and an electrical device, which can improve the reliability of the battery.

[0005] In a first aspect, a battery is provided, comprising: a plurality of battery cells, wherein the plurality of battery cells are arranged in a matrix along a first direction and a second direction, wherein the first direction is perpendicular to the second direction; an insulating member, comprising a first insulating portion extending along the first direction and a second insulating portion extending along the second direction, wherein the first insulating portion is fixedly connected to the plurality of battery cells arranged along the first direction, and the second insulating portion is fixedly connected to the plurality of battery cells arranged along the second direction.

[0006] The insulating member can occupy a certain space on the surface of the battery cell, isolating the battery cell from other parts of the battery, making it difficult for the battery cell to contact other parts of the battery, reducing the risk of short circuit of the battery cell, and improving the reliability of the battery. The first insulating part and the second insulating part arranged crosswise along the first direction and the second direction can also play a good supporting role, making the battery less likely to be damaged by external forces. At the same time, the first insulating part and the second insulating part in the insulating member can fix multiple battery cells in the first direction and the second direction respectively, so that the multiple battery cells form a whole, which can improve the overall rigidity and mechanical strength of the battery, thereby improving the reliability and service life of the battery.

[0007] In some embodiments, the first insulating portion is fixedly connected to two adjacent battery cells arranged along the second direction, and / or the second insulating portion is fixedly connected to two adjacent battery cells arranged along the first direction.

[0008] The first insulating part and / or the second insulating part can be fixedly connected to more battery cells at the same time, which can make the connection between multiple battery cells more stable and further improve the overall rigidity of the battery. This can also reduce the number of first insulating parts and second insulating parts, which is conducive to saving the preparation cost of insulating parts.

[0009] In some embodiments, the first insulating portion and the second insulating portion are fixedly connected.

[0010] This can make the structure of the insulating part more stable and less prone to relative movement, which is conducive to providing good insulation performance for the battery. At the same time, fixing the first insulating part and the second insulating part together as a whole is conducive to simplifying the assembly process and improving production efficiency.

[0011] In some embodiments, the first insulating part is provided with a first groove, and the first groove is engaged with the second insulating part; and / or the second insulating part is provided with a second groove, and the second groove is engaged with the first insulating part.

[0012] By snap-connecting the first insulating part and the second insulating part, the assembly of the two can be more flexible, and the positions of the first insulating part and the second insulating part can be adjusted according to actual conditions. When the first insulating part or the second insulating part is damaged, only the damaged insulating part can be replaced without replacing the entire insulating part, thereby reducing losses in the production process.

[0013] In some embodiments, the insulating member is an integrally formed structure.

[0014] In this way, the connection strength between the first insulating part and the second insulating part can be improved, so that the first insulating part and the second insulating part are not easily separated, thereby improving the connection strength between the first insulating part, the second insulating part and the battery cell, and improving the overall rigidity of the battery.

[0015] In some embodiments, the insulating member includes a connecting portion configured to connect the first insulating portion and the second insulating portion on a plane formed by the first direction and the second direction.

[0016] The connecting portion can improve the strength and stability of the insulating member, increase the coverage area of ​​the insulating member on the battery cell, achieve insulation in a larger range, and further improve the insulation effect of the insulating member.

[0017] In some embodiments, the battery cell includes an electrode terminal, and the connecting portion is provided with a first through hole, and the first through hole is used to avoid the electrode terminal.

[0018] The first through hole can reduce the interference between the electrode terminal and the insulating member, so that the electrode terminal can be connected to the busbar component to achieve electrical connection between different battery cells. At the same time, the mutual cooperation between the first through hole and the electrode terminal can also play a role in positioning the insulating member in the battery, which is conducive to improving the accuracy of the assembly position of the insulating member.

[0019] In some embodiments, a first blocking portion is disposed around the first through hole, and the first blocking portion protrudes from a surface of the insulating member facing the battery cell.

[0020] The first barrier can reduce the possibility of the adhesive material attached to the surface of the connection part contacting the electrode terminal, so as to reduce the influence of the adhesive material on the connection between the current collecting component and the electrode terminal. At the same time, the first barrier can play a certain role in blocking solid particles, especially metal particles, so as to reduce the probability of battery short circuit and improve the reliability of the battery.

[0021] In some embodiments, the first blocking portion abuts against a surface of the battery cell facing the insulating member.

[0022] This can improve the sealing effect of the first blocking portion on the surrounding area of ​​the first through hole, and further play a blocking role on the adhesive material or solid particles, thereby reducing the impact of the adhesive material on the connection between the busbar component and the electrode terminal, and at the same time can further play a certain blocking role on solid particles, especially metal particles, which can reduce the probability of battery short circuit and improve the reliability of the battery.

[0023] In some embodiments, the insulating member includes a busbar component, the busbar component corresponds to two adjacent first through holes, and the two adjacent first through holes correspond to electrode terminals of different battery cells, respectively.

[0024] The busbar component is connected to the electrode terminal through the first through hole, so that the electrical connection between the plurality of battery cells can be achieved without affecting the insulation performance between the battery cell and other parts of the battery.

[0025] In some embodiments, a surface of the insulating member that is away from the battery cell at least partially protrudes from a surface of the busbar that is away from the battery cell.

[0026] This can reduce the possibility of the busbar component contacting the wall of the battery box and causing the box to be charged, which is beneficial to improving the insulation effect of the insulating component, reducing the short circuit risk of the battery cell, and improving the reliability of the battery.

[0027] In some embodiments, the battery cell includes a pressure relief mechanism, the connecting portion is provided with a second through hole, and the second through hole is used to avoid the pressure relief mechanism.

[0028] The second through hole can provide an escape space for the actuation of the pressure relief mechanism. When the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism is more easily actuated to reduce the possibility of explosion or fire of the battery cell.

[0029] In some embodiments, a second blocking portion is disposed around the second through hole, and the second blocking portion protrudes from a surface of the insulating member facing the battery cell.

[0030] The second blocking portion can protect the pressure relief mechanism in the second through hole, and can limit the flow of the adhesive material to the pressure relief mechanism, thereby reducing the possibility of the adhesive material attached to the surface of the insulating member contacting the pressure relief mechanism, reducing the possibility of the pressure relief mechanism being stuck and difficult to actuate, and improving the reliability of the battery. At the same time, the second blocking portion can play a certain blocking role on solid particles, thereby reducing the probability of damage to the pressure relief mechanism and improving the reliability of the battery.

[0031] In some embodiments, the first insulating part is provided with a third blocking part, which protrudes from the surface of the first insulating part facing the battery cell and extends along the first direction; and / or, the second insulating part is provided with a fourth blocking part, which protrudes from the surface of the second insulating part facing the battery cell and extends along the second direction.

[0032] The third barrier and / or the fourth barrier can protect the gap between adjacent battery cells, and can limit the flow of adhesive materials into the gap between battery cells, which is conducive to achieving close arrangement between battery cells, thereby reducing the effect of adhesive materials on the expansion and deformation of battery cells and improving the service life of the battery. In addition, the third barrier and / or the fourth barrier can also play a certain blocking role on solid particles, reducing the probability of solid particles falling into the gap between two adjacent battery cells, thereby reducing the probability of solid particles damaging battery cells, thereby improving the reliability of the battery.

[0033] In some embodiments, the projection of the third blocking portion in the third direction covers the gap between two adjacent battery cells arranged along the second direction, and the third direction is perpendicular to the first direction and the second direction; and / or, the projection of the fourth blocking portion in the third direction covers the gap between two adjacent battery cells arranged along the first direction, and the third direction is perpendicular to the first direction and the second direction.

[0034] The third blocking part and / or the fourth blocking part can limit the flow of the adhesive material into the gap between the battery cells by covering the gap between the battery cells, which is conducive to achieving a close arrangement between the battery cells, thereby reducing the influence of the adhesive material on the expansion and deformation of the battery cells and improving the service life of the battery. In addition, the probability of solid particles falling into the gap between two adjacent battery cells can be further reduced, and the probability of solid particles damaging the battery cells can be further reduced, thereby improving the reliability of the battery.

[0035] In some embodiments, the first insulating portion is provided with two separated third blocking portions, and the projections of the two third blocking portions in the third direction are located on both sides of the gap between two adjacent battery cells arranged along the second direction, and the third direction is perpendicular to the first direction and the second direction; and / or, the second insulating portion is provided with two separated fourth blocking portions, and the projections of the two fourth blocking portions in the third direction are located on both sides of the gap between two adjacent battery cells arranged along the first direction, and the third direction is perpendicular to the first direction and the second direction.

[0036] The third blocking part and / or the fourth blocking part can limit the adhesive material or solid particles from entering the gap on both sides of the gap between the battery cells, which is helpful to reduce the possibility of the adhesive material or solid particles entering the gap, thereby achieving close arrangement between the battery cells, which can also reduce the influence of the adhesive material or solid particles on the expansion and deformation of the battery cells, and improve the service life of the battery. At the same time, arranging the blocking parts on both sides of the gap between the battery cells can also reduce the materials consumed by the blocking parts, reduce the production cost, and reduce the weight of the battery.

[0037] In some embodiments, the insulating member includes a sampling assembly, and the sampling assembly is disposed on the first insulating portion and / or the second insulating portion.

[0038] When there are a large number of battery cells, arranging the sampling assembly on the insulating member can improve the integration of the sampling assembly and the insulating member, thereby improving production efficiency and reducing production costs of the sampling assembly.

[0039] In some embodiments, the light transmittance of the first insulating portion and / or the second insulating portion is 20%-100%.

[0040] During the assembly process, the first insulating part and / or the second insulating part is made of a material with a light transmittance of 20%-100%, which is conducive to observing and controlling the assembly process, so that adjustments can be made in time to improve the qualification rate in the battery production process.

[0041] In some embodiments, the battery further includes an adhesive layer, and the adhesive layer is used to bond the insulating member and the battery cell.

[0042] The adhesive layer can realize the fixed connection between the insulating member and the battery cell, so that the battery cell is not easily separated from the insulating member and causes insulation failure. At the same time, the adhesive layer can fix the relative positions between multiple battery cells through the insulating member, so that the battery cells are not easily collided with each other in the battery and cause danger.

[0043] In some embodiments, the material of the adhesive layer is a photosensitive adhesive.

[0044] Photosensitive adhesives can accelerate the solidification process through light, reduce battery preparation time and improve preparation efficiency.

[0045] In some embodiments, the battery includes: a first box body, the first box body is a hollow structure with an opening, and multiple battery cells are accommodated in the hollow structure; a second box body, the second box body covers the first box body, and the second box body is fixedly connected to the insulating member.

[0046] The second box body can further fix the position of the battery cell in the battery by being fixedly connected to the insulating member, reduce the shaking of the battery cell in the first box body, and reduce the possibility of damage to the battery cell caused by collision inside the battery, thereby improving the reliability of the battery.

[0047] In some embodiments, the second box body is bonded and fixed to the insulating member.

[0048] The adhesive may have a certain thickness when coated on the surface, which can fill the gap between the second box body and the insulating member, and improve the bonding strength between the second box body and the insulating member. Using the adhesive to connect the second box body and the insulating member can also improve the shock resistance of the battery.

[0049] In a second aspect, an electrical device is provided, comprising a battery as described in any one of the embodiments of the first aspect, wherein the battery is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0051] Figure 1 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0052] Figure 2 It is a schematic diagram of the exploded structure of a battery provided in an embodiment of the present application.

[0053] Figure 3 It is a schematic diagram of the exploded structure of another battery provided in an embodiment of the present application.

[0054] Figure 4 It is a schematic diagram of the exploded structure of an insulating component provided in an embodiment of the present application.

[0055] Figure 5 It is a schematic diagram of the structure of another insulating component provided in an embodiment of the present application.

[0056] Figure 6 It is a schematic diagram of the structure of another insulating component provided in an embodiment of the present application.

[0057] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of part A.

[0058] Figure 8 It is a schematic diagram of the exploded structure of another battery provided in an embodiment of the present application.

[0059] Fig. 9 It is a schematic diagram of the structure of another battery provided in an embodiment of the present application.

[0060] Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure of part B.

[0061] Fig.11 It is a schematic diagram of the structure of another battery provided in an embodiment of the present application.

[0062] Fig.12 It is a schematic diagram of the structure of another battery provided in an embodiment of the present application.

[0063] Fig.13 yes Fig.11 Schematic diagram of the enlarged structure of part C.

[0064] Fig.14 It is a schematic diagram of the structure of another insulating component provided in an embodiment of the present application.

[0065] Fig.15 yes Fig.12 Schematic diagram of the enlarged structure of part D.

[0066] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0067] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0068] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but within the tolerance range. "Parallel" is not strictly parallel, but within the tolerance range. All technical and scientific terms used in the present application have the same meaning as those generally understood by technicians in the technical field of the present application; the terms used in the present application and in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0069] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0070] Reference to "embodiments" in this application 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 in this application may be combined with other embodiments.

[0071] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist, and B exists. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0072] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0073] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application shown in the drawings are only exemplary and should not constitute any limitation to the present application.

[0074] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, lithium metal batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0075] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0076] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, lithium metal or lithium alloy, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation film may be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly in the embodiment of the present application includes but is not limited to a winding structure or a laminated structure.

[0077] With the development of battery technology, more and more battery cells are accommodated in the battery, and it is becoming increasingly difficult to fix and insulate multiple battery cells. The battery module formed by multiple battery cells has low mechanical strength, which makes the battery have insufficient reliability during use.

[0078] In view of this, an embodiment of the present application provides a battery, insulating a battery cell from other parts of the battery through an insulating member. The insulating member includes a first insulating portion and a second insulating portion extending along a first direction, respectively connecting a plurality of battery cells arranged along the first direction and a plurality of battery cells arranged along the second direction. The first insulating portion and the second insulating portion can not only provide insulation for each battery cell, but also improve the overall rigidity of a battery module formed by a plurality of battery cells, improve the mechanical strength and reliability of the battery, and thus help to improve the service life of the battery.

[0079] The technical solutions described in the embodiments of the present application are applicable to various battery-powered electrical devices. Electrical devices may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0080] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0081] For example, Figure 1 As shown, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 40, a controller 30 and a battery 10 may be arranged inside the vehicle 1. The controller 30 is used to control the battery 10 to supply power to the motor 40. For example, a battery 10 may be arranged at the bottom, front or rear of the vehicle 1. The battery 10 may be used to supply power to the vehicle 1. For example, the battery 10 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 may not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0082] In order to meet different power requirements, the battery may include multiple battery cells, wherein the multiple battery cells may be connected in series, in parallel, or in a hybrid connection, wherein the hybrid connection refers to a mixture of series and parallel connections. The battery may also be referred to as a battery pack. Optionally, multiple battery cells may be connected in series, in parallel, or in a hybrid connection to form a battery module, and multiple battery modules may be connected in series, in parallel, or in a hybrid connection to form a battery. In other words, multiple battery cells may be directly connected to form a battery, or may be first connected to form a battery module, and then the battery module may be connected to form a battery.

[0083] For example, Figure 2The schematic diagram of the structure of a battery 10 according to an embodiment of the present application is shown. The battery 10 may include at least one battery module 200. The battery module 200 includes a plurality of battery cells 20. The battery 10 may also include a box 11, the inside of the box 11 is a hollow structure, and the plurality of battery cells 20 are accommodated in the box 11. Figure 2 A possible implementation of the box 11 of the embodiment of the present application is shown, such as Figure 2 As shown, the box body 11 may include two parts, which are respectively referred to as a first box body part 111 and a second box body part 112, and the first box body part 111 and the second box body part 112 are buckled together. The shapes of the first box body part 111 and the second box body part 112 may be determined according to the shape of the battery module 200 combination, and at least one of the first box body part 111 and the second box body part 112 has an opening. For example, Figure 2 As shown, the first box body part 111 and the second box body part 112 can both be hollow rectangular parallelepipeds and each has only one open face, the opening of the first box body part 111 and the opening of the second box body part 112 are arranged opposite to each other, and the first box body part 111 and the second box body part 112 are interlocked to form a box body 11 with a closed chamber.

[0084] For example, different from Figure 2 As shown, only one of the first box body 111 and the second box body 112 may be a hollow cuboid with an opening, and the other may be a plate-shaped to cover the opening. For example, here, the second box body 112 is a hollow cuboid with only one face as an opening face, and the first box body 111 is a plate-shaped example, then the first box body 111 covers the opening of the second box body 112 to form a box body 11 with a closed chamber, which can be used to accommodate multiple battery cells 20. Multiple battery cells 20 are connected in parallel, in series, or in a mixed combination and placed in the box body 11 formed by the first box body 111 and the second box body 112 being buckled.

[0085] Optionally, the battery 10 may also include other structures, which are not described one by one here. For example, the battery 10 may also include a busbar, which is used to realize the electrical connection between multiple battery cells 20, such as parallel connection, series connection or mixed connection. Specifically, the busbar can realize the electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of multiple battery cells 20 can be further led out through the box 11 through the conductive mechanism.

[0086] According to different power requirements, the number of battery cells 20 in the battery module 200 can be set to any value. Multiple battery cells 20 can be connected in series, parallel or mixed to achieve a larger capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, in order to facilitate installation, the battery cells 20 are grouped and each group of battery cells 20 constitutes a battery module 200. The number of battery cells 20 included in the battery module 200 is not limited and can be set according to demand.

[0087] The battery 10 may include a plurality of battery modules 200 , and the battery modules 200 may be connected in series, in parallel, or in a mixed manner.

[0088] Figure 3 is a schematic diagram of an exploded structure of a battery 10 provided in an embodiment of the present application, Figure 3 The illustrated battery 10 may include a plurality of battery cells 20 and an insulator 12 .

[0089] The plurality of battery cells 20 are arranged in a matrix along a first direction X and a second direction Y, and the first direction X is perpendicular to the second direction Y. The insulating member 12 includes a first insulating portion 121 extending along the first direction X and a second insulating portion 122 extending along the second direction Y, the first insulating portion 121 is fixedly connected to the plurality of battery cells 20 arranged along the first direction X, and the second insulating portion 122 is fixedly connected to the plurality of battery cells 20 arranged along the second direction Y.

[0090] For ease of understanding and description, the embodiments provided in this application are described only with respect to rectangular battery cells 20. It should be understood that the embodiments provided in this application are also applicable to cylindrical battery cells 20 or soft-pack battery cells 20, and the embodiments of this application are not limited to this.

[0091] from Figure 3 As can be seen in FIG, the matrix arrangement refers to arranging a plurality of battery cells 20 along a first direction X and a second direction Y. The first direction X may be a direction extending along one side of the battery cell 20, for example, it may be a length direction of the battery cell 20; the second direction Y is perpendicular to the first direction X, for example, it may be a thickness direction of the battery cell 20. In some embodiments, the electrode terminals 21 of the plurality of battery cells 20 may be located on a plane formed by the first direction X and the second direction Y.

[0092] The arrangement of multiple battery cells 20 in a matrix along the first direction X and the second direction Y means that the multiple battery cells 20 are arranged in a rectangular shape on a plane formed by the first direction X and the second direction Y. Specifically, the multiple battery cells 20 can be arranged in multiple rows, and the number of battery cells 20 in each row is the same; the multiple battery cells 20 can also be arranged in multiple columns, and the number of battery cells 20 in each column is the same.

[0093] The insulating member 12 refers to a structure in the battery 10 for insulating the battery cell 20 from other parts of the battery 10. Specifically, the insulating member 12 can occupy a certain space on the surface of the battery cell 20, so that the battery cell 20 is not easy to contact with other parts of the battery 10, thereby achieving insulation of the battery cell 20. In some embodiments, the insulating member 12 can be arranged between the battery cell 20 and the case 11 to insulate the battery cell 20 from the case 11 of the battery 10. Specifically, it can be arranged between the plane where the electrode terminal 21 of the battery cell 20 is located and the first wall. The first wall can be a wall on the case 11 that is arranged opposite to the plane where the electrode terminal 21 is located. The insulating member 12 can be made of an insulating material, occupy a certain space between the battery cell 20 and the case 11, so that the battery cell 20 is not easy to contact with the wall of the case 11, thereby achieving insulation of the electrode terminal 21 from the case 11 of the battery 10.

[0094] The first insulating portion 121 is a portion of the insulating member 12 extending along the first direction X, and the second insulating portion 122 is a portion of the insulating member 12 extending along the second direction Y. The first insulating portion 121 and the second insulating portion 122 may be arranged on the same plane. In some embodiments, the first insulating portion 121 and the second insulating portion 122 may be a whole, that is, an integrally formed structure; alternatively, the first insulating portion 121 and the second insulating portion 122 may be two separate parts connected to each other by a connecting structure. In some embodiments, the insulating member 12 may include at least one first insulating portion 121 and at least one second insulating portion 122, and at least one first insulating portion 121 may correspond to a group of battery cells 20 arranged along the first direction X, and at least one second insulating portion 122 may correspond to a group of battery cells 20 arranged along the second direction Y, respectively. Figure 3 The insulating member 12 includes a plurality of first insulating portions 121 and a plurality of second insulating portions 122. Figure 3 As shown, the plurality of first insulating portions 121 and the plurality of second insulating portions 122 may form a mesh-shaped insulating member 12 .

[0095] The first insulating portion 121 can be fixedly connected to a plurality of battery cells 20 arranged along the first direction X to connect the plurality of battery cells 20 arranged along the first direction X as a whole, thereby reducing the shaking of the battery cells 20 and the collision between adjacent battery cells 20. Similarly, the second insulating portion 122 is fixedly connected to a plurality of battery cells 20 arranged along the second direction Y to connect the plurality of battery cells 20 arranged along the second direction Y as a whole. In some embodiments, the first insulating portion 121 and the second insulating portion 122 form a mesh-shaped insulating member 12, and the plurality of battery cells 20 can be fixed in the first direction X and the second direction Y, which can further improve the stability between the plurality of battery cells 20.

[0096] In some embodiments, the first insulating portion 121 may be fixedly connected to a group of battery cells 20 arranged along the first direction X, and each group of battery cells 20 may correspond to a first insulating portion 121. Optionally, the first insulating portion 121 may be fixedly connected to two adjacent groups of battery cells 20 arranged along the first direction X at the same time, and each two adjacent groups of battery cells 20 arranged along the first direction X correspond to a first insulating portion 121. Similarly, the second insulating portion 122 may be fixedly connected to a group of battery cells 20 arranged along the second direction Y, and may also be fixedly connected to two adjacent groups of battery cells 20 arranged along the second direction Y at the same time.

[0097] The insulating member 12 can occupy a certain space on the surface of the battery cell 20, isolating the battery cell 20 from other parts of the battery 10, so that the battery cell 20 is not easy to contact with other parts of the battery 10, reducing the risk of short circuit of the battery cell 20 and improving the reliability of the battery 10. The first insulating portion 121 and the second insulating portion 122 arranged crosswise along the first direction X and the second direction Y can also play a good supporting role, so that the battery 10 is not easily damaged by external forces. At the same time, the first insulating portion 121 and the second insulating portion 122 in the insulating member 12 can respectively fix multiple battery cells 20 in the first direction X and the second direction Y, so that the multiple battery cells 20 form a whole, which can improve the overall rigidity and mechanical strength of the battery 10, thereby improving the reliability and service life of the battery 10.

[0098] According to some embodiments of the present application, optionally, the first insulating portion 121 is fixedly connected to two adjacent battery cells 20 arranged along the second direction Y, and / or the second insulating portion 122 is fixedly connected to two adjacent battery cells 20 arranged along the first direction X.

[0099] The first insulating portion 121 can be fixedly connected to the plurality of battery cells 20 arranged along the first direction X, and can also be fixedly connected to at least two adjacent battery cells 20 arranged along the second direction Y. In this case, the first insulating portion 121 can cover at least a portion of the gap between two adjacent battery cells 20 arranged along the second direction Y. In some embodiments, the first insulating portion 121 can be fixedly connected to two adjacent groups of battery cells 20 arranged along the first direction X.

[0100] Similar to the first insulating portion 121 , the second insulating portion 122 may also simultaneously connect at least two adjacent battery cells 20 arranged along the first direction X, and the second insulating portion 122 may cover at least a portion of the gap between two adjacent battery cells 20 arranged along the first direction X.

[0101] In one possible embodiment, the first insulating portion 121 is fixedly connected to two adjacent battery cells 20 arranged along the second direction Y, and the second insulating portion 122 is not fixedly connected to two adjacent battery cells 20 arranged along the first direction X; in another possible embodiment, the second insulating portion 122 is fixedly connected to two adjacent battery cells 20 arranged along the first direction X, and the first insulating portion 121 is not fixedly connected to two adjacent battery cells 20 arranged along the second direction Y; in another possible embodiment, while the first insulating portion 121 is fixedly connected to two adjacent battery cells 20 arranged along the second direction Y, the second insulating portion 122 is also fixedly connected to two adjacent battery cells 20 arranged along the first direction X.

[0102] The first insulating portion 121 and / or the second insulating portion 122 can be fixedly connected to more battery cells 20 at the same time, which can make the connection between the multiple battery cells 20 more stable and further improve the overall rigidity of the battery 10. In this way, the number of the first insulating portion 121 and the second insulating portion 122 can be reduced, which is conducive to saving the preparation cost of the insulating member 12.

[0103] According to some embodiments of the present application, optionally, the first insulating portion 121 and the second insulating portion 122 are fixedly connected.

[0104] The fixed connection between the first insulating part 121 and the second insulating part 122 means that the relative positions of the first insulating part 121 and the second insulating part 122 are fixed. In a possible implementation, the first insulating part 121 and the second insulating part 122 can be fixedly connected by snap connection, such as snap connection, shaft hole snap connection, groove snap connection, etc.; in another possible implementation, the first insulating part 121 and the second insulating part 122 can be fixedly connected by fasteners, such as bolts, screws, etc.; in another possible implementation, the first insulating part 121 and the second insulating part 122 can be fixedly connected by bonding.

[0105] The fixed connection between the first insulating part 121 and the second insulating part 122 can make the structure of the insulating member 12 more stable and less prone to relative movement, which is beneficial to providing good insulation performance for the battery 10. At the same time, the first insulating part 121 and the second insulating part 122 are fixedly connected as a whole to simplify the assembly process and improve production efficiency.

[0106] According to some embodiments of the present application, optionally, the first insulating portion 121 is provided with a first groove 131, and the first groove 131 is engaged with the second insulating portion 122; and / or,

[0107] The second insulating portion 122 is provided with a second groove 132 , and the second groove 132 is engaged with the first insulating portion 121 .

[0108] The first insulating portion 121 and / or the second insulating portion 122 can be connected to each other by providing grooves, such as Figure 4 As shown, Figure 4 A schematic diagram of an exploded structure of the insulating member 12 is shown.

[0109] In a possible implementation, the first insulating portion 121 may be provided with a first groove 131, and optionally, the first groove 131 may be provided on a surface of the first insulating portion 121 facing the second insulating portion 122. In some embodiments, the size of the first groove 131 in the first direction X is substantially equal to the size of the second insulating portion 122 in the first direction X, and the first groove 131 is engaged with the second insulating portion 122 to limit the position of the second insulating portion 122 in the first direction X.

[0110] In a possible implementation, the second insulating portion 122 may be provided with a second groove 132. Optionally, the second groove 132 may be provided on a surface of the second insulating portion 122 facing the first insulating portion 121. In some embodiments, the size of the second groove 132 in the second direction Y is substantially equal to the size of the first insulating portion 121 in the second direction Y, and the second groove 132 is engaged with the first insulating portion 121 to limit the position of the first insulating portion 121 in the second direction Y.

[0111] In a possible implementation, the first insulating portion 121 is provided with a first groove 131, and the second insulating portion 122 is provided with a second groove 132, and the first groove 131 and the second groove 132 are arranged opposite to each other. The size of the first groove 131 in the first direction X is substantially equal to the size of the second insulating portion 122 in the first direction X, and the size of the second groove 132 in the second direction Y is substantially equal to the size of the first insulating portion 121 in the second direction Y. The first groove 131 and the second groove 132 are engaged with each other, and the positions of the first insulating portion 121 and the second insulating portion 122 in the first direction X and the second direction Y can be limited at the same time.

[0112] By snap-connecting the first insulating part 121 and the second insulating part 122, the assembly of the two can be more flexible, and the positions of the first insulating part 121 and the second insulating part 122 can be adjusted according to actual conditions. When the first insulating part 121 or the second insulating part 122 is damaged, only the damaged insulating part can be replaced without replacing the entire insulating part 12, thereby reducing losses in the production process.

[0113] According to some embodiments of the present application, optionally, the insulating member 12 is an integrally formed structure.

[0114] like Figure 5 As shown, Figure 5The insulating member 12 is shown as an integrally formed structure. For example, a mold may be used to integrally form the first insulating portion 121 and the second insulating portion 122, and the first insulating portion 121 and the second insulating portion 122 are fixedly connected.

[0115] This can improve the connection strength between the first insulating part 121 and the second insulating part 122, making it difficult for the first insulating part 121 and the second insulating part 122 to separate, thereby improving the connection strength between the first insulating part 121 and the second insulating part 122 and the battery cell 20 and improving the overall rigidity of the battery 10.

[0116] According to some embodiments of the present application, optionally, the insulating member 12 includes a connecting portion 123 , and the connecting portion 123 is used to connect the first insulating portion 121 and the second insulating portion 122 on a plane formed by the first direction X and the second direction Y.

[0117] Figure 6 and Figure 7 The structure of an insulating member 12 provided in an embodiment of the present application is shown, wherein: Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of part A. Figure 6 and Figure 7 In the embodiment, the first insulating portion 121 extends along the first direction X, the second insulating portion 122 extends along the second direction Y, the first insulating portion 121 and the second insulating portion 122 are connected to each other to form a mesh structure, and the structure used to fill at least part of the area of ​​the mesh in the mesh structure is the connecting portion 123. Specifically, at least one of the two ends of the connecting portion 123 along the first direction X is connected to the second insulating portion 122, and at least one of the two ends of the connecting portion 123 along the second direction Y is connected to the first insulating portion 121. In some embodiments, the connecting portion 123 can also be made of an insulating material. In some embodiments, the first insulating portion 121, the second insulating portion 122 and the connecting portion 123 are an integrally formed structure.

[0118] In some embodiments, a reinforcement structure 124 may be provided between adjacent connecting portions 123. Figure 7 As shown, a reinforcement structure 124 may be provided between two adjacent connecting portions 123 in the second direction Y, and a plurality of reinforcement structures 124 may be provided at intervals along the first direction X. Optionally, the reinforcement structure 124 may simultaneously connect the first insulating portion 121 and the connecting portions 123 on both sides of the first insulating portion 121. In some embodiments, a reinforcement structure 124 may also be provided at the edge of the insulating member 12 to improve the strength of the edge of the insulating member 12. In some embodiments, the reinforcement structure 124 may include a reinforcement rib. In some embodiments, the first insulating portion 121, the second insulating portion 122, the connecting portion 123, and the reinforcement structure 124 are an integrally formed structure.

[0119] The connecting portion 123 can improve the strength and stability of the insulating member 12 , increase the coverage area of ​​the insulating member 12 on the battery cell 20 , achieve insulation in a larger range, and further improve the insulation effect of the insulating member 12 .

[0120] According to some embodiments of the present application, optionally, the battery cell 20 includes an electrode terminal 21 , and the connection portion 123 is provided with a first through hole 1231 , and the first through hole 1231 is used to avoid the electrode terminal 21 .

[0121] Figure 8 FIG. 1 is a schematic diagram of an exploded structure of a battery 10 provided in an embodiment of the present application. Fig. 9 is a schematic diagram of the assembly structure of the insulating member 12 and the battery cell 20, Fig.10 yes Fig. 9 The enlarged structural diagram of part B in FIG. Figures 6 to 10 As shown, the first through hole 1231 may be provided in the connection portion 123 and penetrate the connection portion 123 in the third direction Z. The third direction Z is perpendicular to a plane formed by the first direction X and the second direction Y, and may refer to a thickness direction of the insulating member 12 .

[0122] The first through hole 1231 is arranged corresponding to the electrode terminal 21. Optionally, each first through hole 1231 on the insulating member 12 may correspond to an electrode terminal 21. The first through hole 1231 can avoid the electrode terminal 21, so that the electrode terminal 21 and the insulating member 12 do not interfere with each other. Fig. 9 and Fig.10 As shown, at least part of the electrode terminal 21 is accommodated in the first through hole 1231 , and the position of the electrode terminal 21 is not covered by the insulating member 12 , so that the electrode terminal 21 can be connected to the busbar component 22 to achieve electrical connection between different battery cells 20 .

[0123] The first through hole 1231 can reduce the interference between the electrode terminal 21 and the insulating member 12, so that the electrode terminal 21 can be connected to the busbar 22 to achieve electrical connection between different battery cells 20. At the same time, the mutual cooperation between the first through hole 1231 and the electrode terminal 21 can also play a role in positioning the insulating member 12 in the battery 10, which is conducive to improving the accuracy of the assembly position of the insulating member 12.

[0124] According to some embodiments of the present application, optionally, the battery cell 20 includes a pressure relief mechanism 23 , and the connecting portion 123 is provided with a second through hole 1232 , and the second through hole 1232 is used to avoid the pressure relief mechanism 23 .

[0125] The pressure relief mechanism 23 refers to an element or component that is actuated to release the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold. Among them, "actuation" means that the pressure relief mechanism 23 is in action, so that the internal pressure and temperature of the battery cell 20 can be released. The action produced by the pressure relief mechanism 23 may include but is not limited to: at least a part of the pressure relief mechanism 23 is broken, torn or melted, etc. After the pressure relief mechanism 23 is actuated, the high-temperature and high-pressure substances inside the battery cell 20 will be discharged from the pressure relief mechanism 23 as emissions. The predetermined threshold can be adjusted according to different design requirements. The predetermined threshold may depend on one or more materials of the positive electrode plate, the negative electrode plate, the electrolyte and the separator in the battery cell 20. The pressure relief mechanism 23 can be a pressure-sensitive or temperature-sensitive element or component, that is, when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold, the pressure relief mechanism 23 is actuated to form a channel for internal pressure release. Emissions from the battery cells 20 include, but are not limited to, electrolyte, dissolved or split positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, and the like.

[0126] The pressure relief mechanism 23 on the battery cell 20 has an important impact on the reliability of the battery 10. For example, when the battery cell 20 is short-circuited or overcharged, thermal runaway may occur inside the battery cell 20, causing a sudden increase in pressure or temperature. In this case, the pressure relief mechanism 23 can be activated to release the internal pressure and temperature to the outside, thereby reducing the possibility of explosion or fire of the battery cell 20.

[0127] like Figures 6 to 10 As shown, the second through hole 1232 can be provided on the connecting portion 123, and penetrate the connecting portion 123 in the third direction Z. The second through hole 1232 can be provided corresponding to the pressure relief mechanism 23. Optionally, each second through hole 1232 on the insulating member 12 can correspond to a pressure relief mechanism 23. The second through hole 1232 avoiding the pressure relief mechanism 23 means that the second through hole 1232 can reserve a certain space for the actuation of the pressure relief mechanism 23, so that the pressure relief mechanism 23 can use the space to release the internal pressure and temperature. Fig. 9 and Fig.10 As shown, in some embodiments, the accommodation space formed by the second through hole 1232 can provide space for the actuation of the pressure relief mechanism 23. Optionally, at least a portion of the pressure relief mechanism 23 can also be accommodated in the second through hole 1232.

[0128] The second through hole 1232 can provide an escape space for the actuation of the pressure relief mechanism 23 . When the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold, the pressure relief mechanism 23 is more easily actuated to reduce the possibility of explosion or fire of the battery cell 20 .

[0129] According to some embodiments of the present application, optionally, the insulating member 12 includes a busbar component 22 , the busbar component 22 corresponds to two adjacent first through holes 1231 , and the two adjacent first through holes 1231 correspond to electrode terminals 21 of different battery cells 20 , respectively.

[0130] The busbar component 22 can be used to realize electrical connection between multiple battery cells 20, such as parallel connection, series connection or mixed connection. Specifically, the busbar component 22 can realize electrical connection between the battery cells 20 by connecting the electrode terminals 21 of the battery cells 20. Further, the busbar component 22 can be fixed to the electrode terminals 21 of the battery cells 20 by welding, and the electrical energy of the multiple battery cells 20 can be further led out through the box body 11 through the conductive mechanism.

[0131] Fig.11 Schematic diagram of the assembly structure of the insulating member 12, the battery cell 20 and the busbar component 22, as shown in Figures 8 to 11 As shown, the busbar 22 is used to connect the electrode terminals 21 of two adjacent battery cells 20, and the electrode terminals 21 correspond to the first through holes 1231, so the busbar 22 needs to correspond to the two adjacent first through holes 1231, wherein the two adjacent first through holes 1231 correspond to the electrode terminals 21 of different battery cells 20, respectively, so that the busbar 22 can realize the series or parallel connection of two adjacent battery cells 20 when the insulating member 12 is provided on the surface of the battery cell 20. In the embodiment of the present application, the first through holes 1231 provide space for the connection between the busbar 22 and the electrode terminals 21, and the busbar 22 can cover the first through holes 1231 to connect with the electrode terminals 21.

[0132] In a possible embodiment, the insulating part 12 and the busbar component 22 can be two separate components, the battery cell 20 can be fixedly connected to the insulating part 12 by bonding or other means, and the busbar component 22 can be fixedly connected to the electrode terminal 21 of the battery cell 20 by welding or other means through the first through hole 1231.

[0133] In a possible implementation, Fig.12 As shown, the insulating member 12 and the current collecting member 22 can be pre-prepared into an integrated connection assembly 13, and during the assembly process, the connection assembly 13 can be set as a whole on the surface of the battery cell 20. In the connection assembly 13, the current collecting member 22 corresponds to two adjacent first through holes 1231, and when the connection assembly 13 is fixedly connected to the battery cell 20, the two adjacent first through holes 1231 correspond to the electrode terminals 21 of different battery cells 20. By assembling multiple battery cells 20 together through the connection assembly 13, the overall rigidity of the battery 10 can be improved, and the assembly steps can be simplified to improve the assembly efficiency.

[0134] The busbar member 22 is connected to the electrode terminal 21 through the first through hole 1231 , and can achieve electrical connection between the plurality of battery cells 20 without affecting the insulation performance between the battery cell 20 and other parts of the battery 10 .

[0135] According to some embodiments of the present application, optionally, a surface of the insulating member 12 away from the battery cell 20 at least partially protrudes from a surface of the busbar component 22 away from the battery cell 20 .

[0136] Fig.13 Shows Fig.11 The enlarged structural diagram of part C is shown in FIG. Fig.13 As shown, the surface of the insulating member 12 away from the battery cell 20 refers to the surface of the insulating member 12 on the side facing away from the battery cell 20 in the third direction Z; the surface of the busbar component 22 away from the battery cell 20 refers to the surface of the side of the busbar component 22 that is not connected to the electrode terminal 21 in the third direction Z.

[0137] The insulating member 12 includes a first insulating portion 121 and a second insulating portion 122, and optionally, may include a connecting portion 123, and optionally, may also include a reinforcing structure 124. These structures on the insulating member 12 may cause the thickness of the insulating member 12 to be different at different positions. In the embodiment of the present application, the surface of the insulating member 12 away from the battery cell 20 in the third direction Z at least partially protrudes from the surface of the busbar component 22 away from the battery cell 20, and the reinforcing structure 124 is preferably a reinforcing structure. Fig.13 It can be seen that at least a portion of the insulating member 12 is higher than the plane where the current collecting component 22 is located.

[0138] Optionally, the relationship between the surface of the insulating member 12 away from the battery cell 20 and the surface of the busbar component 22 away from the battery cell 20 may also be reflected by the distance between the insulating member 12 at different positions and the surface of the battery cell 20 facing the insulating member 12 .

[0139] like Fig.13 As shown, taking the reinforcing structure 124 as the highest point on the insulating member 12 protruding from the surface of the insulating member 12 away from the battery cell 20 as an example, the maximum distance between the surface of the insulating member 12 away from the battery cell 20 and the surface of the battery cell 20 adjacent to the insulating member 12 is H1. It should be understood that in the case where there is a region higher than the reinforcing structure 124 on the insulating member 12, H1 refers to the distance between the position on the insulating member 12 farthest from the battery cell 20 in the third direction Z and the surface of the battery cell 20 adjacent to the insulating member 12.

[0140] Similarly, there may be some structures on the conduit component 22 that cause the thickness of the conduit component 22 to be different at different positions, such as Fig.13As shown, taking the area on the busbar component 22 connected to the electrode terminal 21 as the farthest from the surface of the battery cell 20 adjacent to the insulating member 12, the maximum distance between the surface of the busbar component 22 away from the battery cell 20 and the surface of the battery cell 20 adjacent to the insulating member 12 is H2. It should be understood that H2 refers to the distance between the position of the busbar component 22 farthest from the battery cell 20 in the third direction Z and the surface of the battery cell 20 adjacent to the insulating member 12.

[0141] In the embodiment of the present application, H1>H2, that is, at least a portion of the surface of the insulating member 12 away from the battery cell 20 is higher than the surface of the runner component 22 away from the battery cell 20 . Then, inside the battery 10 , the runner component 22 is more difficult to contact the wall of the box body 11 than the insulating member 12 .

[0142] In a possible implementation, the portion of the insulating member 12 protruding from the surface of the current collecting member 22 away from the battery cell 20 may be connected to the inner wall of the box body 11, for example, the insulating member 12 may abut or bond to the inner wall of the box body 11. Since at least a portion of the insulating member 12 protrudes from the surface of the current collecting member 22 away from the battery cell 20, when the insulating member 12 is connected to the inner wall of the box body 11, the current collecting member 22 is not easy to contact the inner wall of the box body 11.

[0143] This can reduce the possibility that the busbar component 22 contacts the wall of the battery box 11 and causes the box 11 to be charged, which is beneficial to improving the insulation effect of the insulating component 12, reducing the short circuit risk of the battery cell 20, and improving the reliability of the battery 10.

[0144] According to some embodiments of the present application, optionally, the insulating member 12 includes a sampling component 125 , and the sampling component 125 is disposed on the first insulating portion 121 and / or the second insulating portion 122 .

[0145] The sampling component 125 is used to sample the signal of the battery cell 20. For example, the sampling component 125 can be configured to obtain the voltage, current and other parameters of the battery cell 20. Optionally, the sampling component 125 can also be configured to obtain the temperature, expansion force and other parameters of the battery cell 20. The sampling component 125 may include a flexible circuit board, a printed circuit board, a wire and the like.

[0146] In some embodiments, the sampling component 125 may be disposed on the first insulating portion 121 to sample parameters of the battery cells 20 located on both sides of the first insulating portion 121 in the second direction Y. Figures 11 to 13 In this case, the sampling assembly 125 can be integrated with the first insulating portion 121 in the insulating member 12 , and there is no need to provide an additional bearing component for the sampling assembly 125 .

[0147] In some embodiments, the sampling assembly 125 may be disposed on the second insulating portion 122 to sample parameters of the battery cells 20 located on both sides of the second insulating portion 122 in the first direction X. In this case, the sampling assembly 125 may be integrated with the second insulating portion 122 in the insulating member 12, and no additional bearing component is required for the sampling assembly 125.

[0148] In some embodiments, the sampling component 125 can be disposed on both the first insulating portion 121 and the second insulating portion 122 to sample the parameters of the battery cells 20 located on both sides of the first insulating portion 121 and the second insulating portion 122 in the first direction X and the second direction Y. Optionally, the sampling component 125 can also be integrated with the first insulating portion 121 and the second insulating portion 122 in the insulating member 12.

[0149] In one possible embodiment, the sampling assembly 125, the flow collection component 22 and the insulating member 12 may be separate parts, which are assembled together with the battery cell 20 during the assembly process; in another possible embodiment, the insulating member 12 and the flow collection component 22 are assembled with the battery cell 20 as a whole, and the sampling assembly 125 is assembled as a separate part; in another possible embodiment, the connecting assembly 13 may include the sampling assembly 125, that is, the connecting assembly 13 may include the sampling assembly 125, the insulating member 12 and the flow collection component 22, that is, the sampling assembly 125, the insulating member 12 and the flow collection component 22 may be pre-prepared into an integrated connecting assembly 13, and during the assembly process, the connecting assembly 13 is arranged on the surface of the battery cell 20 as a whole. Among them, by assembling multiple battery cells 20 together through the connecting assembly 13, the overall rigidity of the battery 10 is improved, and the assembly steps can be simplified and the assembly efficiency can be improved.

[0150] When there are a large number of battery cells 20 , disposing the sampling assembly 125 on the insulating member 12 can improve the integration of the sampling assembly 125 and the insulating member 12 , thereby improving production efficiency and reducing production costs of the sampling assembly 125 .

[0151] According to some embodiments of the present application, optionally, the sampling component 125 is close to the electrode terminal 21 .

[0152] The sampling assembly 125 may be disposed at a position close to the electrode terminal 21 on the first insulating portion 121 and / or the second insulating portion 122, for example, may be disposed at an edge of the first insulating portion 121 and / or the second insulating portion 122 close to the electrode terminal 21. In some embodiments, the sampling assembly 125 may be connected to the busbar 22. Optionally, a groove may be provided on the busbar 22, and the accommodation space formed by the groove is used to accommodate at least part of the sampling assembly 125. In this way, while sampling the parameters of the battery cells 20, the electrical connection between the battery cells 20 will not be affected.

[0153] This is beneficial for the sampling component 125 to sample the relevant parameters of the battery cell 20 , and can also improve the accuracy of the parameters of the battery cell 20 acquired by the sampling component 125 .

[0154] According to some embodiments of the present application, optionally, a first blocking portion 1261 is disposed around the first through hole 1231 , and the first blocking portion 1261 protrudes from a surface of the insulating member 12 facing the battery cell 20 .

[0155] Fig.14 FIG. 1 shows a schematic structural diagram of an insulating member 12 provided in an embodiment of the present application. Specifically, Fig.14 The surface structure of the insulation 12 facing the battery cells 20 is shown. Fig.15 yes Fig.14 Schematic diagram of the enlarged structure of part D.

[0156] The first blocking portion 1261 is arranged around the first through hole 1231 and protrudes from the surface of the insulating member 12 facing the battery cell 20, specifically, it can protrude from the surface of the connecting portion 123 facing the battery cell 20. For example, the first blocking portion 1261 can be annular and surround the first through hole 1231. Optionally, the first blocking portion 1261 can surround the first through hole 1231 along the edge of the first through hole 1231. Optionally, the side wall of the inner circle of the first blocking portion 1261 can be coplanar with the hole wall of the first through hole 1231. In a possible embodiment, a first blocking portion 1261 can be arranged around each first through hole 1231. Optionally, the first blocking portion 1261 can be integrally formed with the insulating member 12. Optionally, the first blocking portion 1261 can be a sealing strip or foamed glue arranged on the surface of the insulating member 12 facing the battery cell 20.

[0157] In some embodiments, the surface of the insulating member 12 facing the battery cell 20 may be coated with an adhesive material to achieve bonding between the insulating member 12 and the battery cell 20, and the first blocking portion 1261 may restrict the flow of the adhesive material to the first through hole 1231, thereby reducing the possibility of the adhesive material attached to the surface of the connecting portion 123 contacting the electrode terminal 21 in the first through hole 1231. In some embodiments, the first blocking portion 1261 may have a certain blocking effect on solid particles, for example, the first blocking portion 1261 may reduce the possibility of metal particles contacting the electrode terminal 21, thereby reducing the probability of a short circuit in the battery 10.

[0158] The first blocking portion 1261 can reduce the possibility of the adhesive material attached to the surface of the connection portion 123 contacting the electrode terminal 21, thereby reducing the influence of the adhesive material on the connection between the busbar component 22 and the electrode terminal 21. At the same time, the first blocking portion 1261 can play a certain role in blocking solid particles, especially metal particles, thereby reducing the probability of short circuit of the battery 10 and improving the reliability of the battery 10.

[0159] According to some embodiments of the present application, optionally, the first blocking portion 1261 abuts against a surface of the battery cell 20 facing the insulating member 12 .

[0160] In the third direction Z, the surface of the first blocking portion 1261 facing the battery cell 20 contacts the surface of the battery cell 20 facing the insulating member 12. Optionally, the first blocking portion 1261 may be made of an elastic material, which may be compressed to a certain extent during the assembly process of the battery 10 to improve the sealing degree between the first blocking portion 1261 and the battery cell 20, thereby improving the blocking effect of the first blocking portion 1261 on adhesive materials or solid particles.

[0161] The abutment between the first blocking portion 1261 and the surface of the battery cell 20 can improve the sealing effect of the first blocking portion 1261 on the surrounding area of ​​the first through hole 1231, and further play a blocking role on the adhesive material or solid particles, thereby reducing the influence of the adhesive material on the connection between the busbar component 22 and the electrode terminal 21, and at the same time can further play a certain blocking role on solid particles, especially metal particles, which can reduce the probability of short circuit of the battery 10 and improve the reliability of the battery 10.

[0162] According to some embodiments of the present application, optionally, a second blocking portion 1262 is disposed around the second through hole 1232 , and the second blocking portion 1262 protrudes from a surface of the insulating member 12 facing the battery cell 20 .

[0163] like Fig.14 and 15As shown, the second blocking portion 1262 is arranged around the second through hole 1232, protruding from the surface of the insulating member 12 facing the battery cell 20, specifically, it can protrude from the surface of the connecting portion 123 facing the battery cell 20. For example, the second blocking portion 1262 can be annular and surround the first through hole 1231. Optionally, the second blocking portion 1262 can surround the second through hole 1232 along the edge of the second through hole 1232. Optionally, the side wall of the inner circle of the second blocking portion 1262 can be coplanar with the hole wall of the second through hole 1232. In a possible embodiment, a second blocking portion 1262 can be arranged around each second through hole 1232. Optionally, the second blocking portion 1262 can be integrally formed with the insulating member 12. Optionally, the second blocking portion 1262 can be a sealing strip or foamed glue arranged on the surface of the insulating member 12 facing the battery cell 20.

[0164] In some embodiments, the surface of the insulating member 12 facing the battery cell 20 may be coated with an adhesive material to achieve bonding between the insulating member 12 and the battery cell 20, and the second blocking portion 1262 may restrict the flow of the adhesive material to the second through hole 1232, thereby reducing the possibility of the adhesive material attached to the surface of the connecting portion 123 contacting the pressure relief mechanism 23 in the second through hole 1232. In some embodiments, the second blocking portion 1262 may have a certain blocking effect on solid particles, for example, the second blocking portion 1262 may reduce the possibility of solid particles contacting the pressure relief mechanism 23, and reduce the probability of damage to the pressure relief mechanism 23.

[0165] The second blocking portion 1262 can protect the pressure relief mechanism 23 in the second through hole 1232, and can limit the flow of the adhesive material to the pressure relief mechanism 23, thereby reducing the possibility of the adhesive material attached to the surface of the insulating member 12 contacting the pressure relief mechanism 23, and reducing the possibility of the pressure relief mechanism 23 being stuck and difficult to actuate, thereby improving the reliability of the battery 10. At the same time, the second blocking portion 1262 can play a certain blocking role on solid particles, thereby reducing the probability of damage to the pressure relief mechanism 23 and improving the reliability of the battery 10.

[0166] According to some embodiments of the present application, optionally, the second blocking portion 1262 abuts against a surface of the battery cell 20 facing the insulating member 12 .

[0167] In the third direction Z, the surface of the second blocking portion 1262 facing the battery cell 20 contacts the surface of the battery cell 20 facing the insulating member 12. Optionally, the second blocking portion 1262 may be made of an elastic material, which may be compressed to a certain extent during the assembly process of the battery 10 to improve the sealing degree between the second blocking portion 1262 and the battery cell 20, thereby improving the blocking effect of the second blocking portion 1262 on adhesive materials or solid particles.

[0168] The abutment between the second blocking portion 1262 and the surface of the battery cell 20 can improve the sealing effect of the second blocking portion 1262 on the surrounding area of ​​the second through hole 1232, and further block the adhesive material or solid particles, thereby reducing the impact of the adhesive material or fixed particles on the pressure relief mechanism 23 and improving the reliability of the battery 10.

[0169] According to some embodiments of the present application, optionally, the first insulating portion 121 is provided with a third blocking portion 1263 , the third blocking portion 1263 protrudes from a surface of the first insulating portion 121 facing the battery cell 20 and extends along the first direction X; and / or,

[0170] The second insulating portion 122 is provided with a fourth blocking portion 1264 . The fourth blocking portion 1264 protrudes from a surface of the second insulating portion 122 facing the battery cell 20 and extends along the second direction Y.

[0171] like Fig.14 and 15 As shown, the third blocking portion 1263 may protrude from the surface of the first insulating portion 121 facing the battery cell 20. The third blocking portion 1263 may extend along the first direction X. Optionally, the size of the third blocking portion 1263 in the first direction X may be the same as the size of the first insulating portion 121 in the first direction X. Optionally, the third blocking portion 1263 may be integrally formed with the insulating member 12. Optionally, the third blocking portion 1263 may be a sealing strip or foam provided on the surface of the insulating member 12 facing the battery cell 20. The third blocking portion 1263 is used to limit the flow of the adhesive material coated on the insulating member 12 to the gap between two adjacent battery cells 20 in the second direction Y, and reduce the adhesive material attached to the surface of the insulating member 12 from flowing to the gap between the battery cells 20 to affect the bonding effect between the insulating member 12 and the battery cell 20. In addition, the third blocking portion 1263 can also play a certain blocking role on solid particles, reducing the probability of solid particles falling into the gap between two adjacent battery cells 20 in the second direction Y, thereby reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0172] The fourth blocking portion 1264 may protrude from the surface of the second insulating portion 122 facing the battery cell 20. The fourth blocking portion 1264 may extend along the second direction Y. Optionally, the size of the fourth blocking portion 1264 in the second direction Y may be the same as the size of the second insulating portion 122 in the second direction Y. Optionally, the fourth blocking portion 1264 may be integrally formed with the insulating member 12. Optionally, the fourth blocking portion 1264 may be a sealing strip or foam provided on the surface of the insulating member 12 facing the battery cell 20. The fourth blocking portion 1264 is used to limit the flow of the adhesive material coated on the insulating member 12 to the gap between two adjacent battery cells 20 in the first direction X, and reduce the adhesive material attached to the surface of the insulating member 12 flowing to the gap between the battery cells 20 to affect the close arrangement between the battery cells 20. In addition, the fourth blocking portion 1264 may also play a certain blocking role on solid particles, reduce the probability of solid particles falling into the gap between two adjacent battery cells 20 in the first direction X, and further reduce the probability of solid particles damaging the battery cell 20, thereby improving the reliability of the battery 10.

[0173] In some embodiments, the third blocking portion 1263 may be set only on the first insulating portion 121; optionally, the fourth blocking portion 1264 may be set only on the second insulating portion 122; optionally, the third blocking portion 1263 may be set on the first insulating portion 121 and the fourth blocking portion 1264 may be set on the second insulating portion 122 at the same time.

[0174] The third blocking portion 1263 and / or the fourth blocking portion 1264 can protect the gap between adjacent battery cells 20, and can limit the flow of adhesive materials into the gap between battery cells 20, which is conducive to achieving close arrangement between battery cells 20, thereby reducing the influence of adhesive materials on the expansion and deformation of battery cells 20, and improving the service life of the battery 10. In addition, the third blocking portion 1263 and / or the fourth blocking portion 1264 can also play a certain blocking role on solid particles, reducing the probability of solid particles falling into the gap between two adjacent battery cells 20, thereby reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0175] According to some embodiments of the present application, optionally, the third blocking portion 1263 and / or the fourth blocking portion 1264 abuts against a surface of the battery cell 20 facing the insulating member 12 .

[0176] In the third direction Z, the surface of the third blocking portion 1263 and / or the fourth blocking portion 1264 facing the battery cell 20 contacts the surface of the battery cell 20 facing the insulating member 12. Optionally, the third blocking portion 1263 and / or the fourth blocking portion 1264 may be made of an elastic material, which may be compressed to a certain extent during the assembly process of the battery 10 to improve the sealing degree between the second blocking portion 1262 and the battery cell 20, thereby improving the blocking effect of the second blocking portion 1262 on the adhesive material or solid particles.

[0177] The abutment between the third blocking portion 1263 and / or the fourth blocking portion 1264 and the surface of the battery cell 20 can improve the sealing effect of the third blocking portion 1263 and / or the fourth blocking portion 1264 on the gap between two adjacent battery cells 20, and further play a blocking role on the adhesive material or solid particles, thereby reducing the impact of the adhesive material or fixed particles on the battery cell 20 and improving the reliability of the battery 10.

[0178] According to some embodiments of the present application, optionally, the projection of the third blocking portion 1263 in the third direction Z covers the gap between two adjacent battery cells 20 arranged along the second direction Y, and the third direction Z is perpendicular to the first direction X and the second direction Y; and / or, the projection of the fourth blocking portion 1264 in the third direction Z covers the gap between two adjacent battery cells 20 arranged along the first direction X, and the third direction Z is perpendicular to the first direction X and the second direction Y.

[0179] The third blocking portion 1263 is disposed on the first insulating portion 121. When the first insulating portion 121 is used to connect two adjacent battery cells 20 arranged along the second direction Y, the projection of the third blocking portion 1263 in the third direction Z covers the gap between the two adjacent battery cells 20 arranged along the second direction Y, and can block the gap between the two battery cells 20 arranged along the second direction Y. Even if the adhesive material on the insulating member 12 flows to the surroundings with the extrusion, the third blocking portion 1263 protruding from the insulating member 12 can also limit the flow of the adhesive material, thereby reducing the possibility of the adhesive material flowing to the gap. In addition, the probability of solid particles falling into the gap between two adjacent battery cells 20 in the second direction Y can be further reduced, and the probability of solid particles damaging the battery cells 20 can be further reduced, thereby improving the reliability of the battery 10.

[0180] Similarly, the fourth blocking portion 1264 is disposed on the second insulating portion 122. When the second insulating portion 122 is used to connect two adjacent battery cells 20 arranged along the first direction X, the projection of the fourth blocking portion 1264 in the third direction Z covers the gap between the two adjacent battery cells 20 arranged along the first direction X, and can block the gap between the two battery cells 20 arranged along the first direction X. Even if the adhesive material on the insulating member 12 flows to the surroundings with the extrusion, the fourth blocking portion 1264 protruding from the insulating member 12 can also limit the flow of the adhesive material, thereby reducing the possibility of the adhesive material flowing to the gap. In addition, the probability of solid particles falling into the gap between two adjacent battery cells 20 in the first direction X can be further reduced, and the probability of solid particles damaging the battery cell 20 can be further reduced, thereby improving the reliability of the battery 10.

[0181] In some embodiments, only the third blocking portion 1263 may block the gaps between the battery cells 20 ; optionally, only the fourth blocking portion 1264 may block the gaps between the battery cells 20 ; optionally, the third blocking portion 1263 and the fourth blocking portion 1264 may be used to block the gaps between the battery cells 20 at the same time.

[0182] The third blocking portion 1263 and / or the fourth blocking portion 1264 can limit the flow of the adhesive material into the gaps between the battery cells 20 by covering the gaps between the battery cells 20, which is conducive to achieving a close arrangement between the battery cells 20, thereby reducing the influence of the adhesive material on the expansion and deformation of the battery cells 20 and improving the service life of the battery 10. In addition, the probability of solid particles falling into the gap between two adjacent battery cells 20 can be further reduced, and the probability of solid particles damaging the battery cells 20 can be further reduced, thereby improving the reliability of the battery 10.

[0183] According to some embodiments of the present application, optionally, at least a portion of the third blocking portion 1263 extends into a gap between two adjacent battery cells 20 arranged along the second direction Y; and / or at least a portion of the fourth blocking portion 1264 extends into a gap between two adjacent battery cells 20 arranged along the first direction X.

[0184] In one possible embodiment, a certain gap may be reserved between two adjacent battery cells 20 arranged along the second direction Y, and at least a portion of the third blocking portion 1263 may be filled into the gap; in another possible embodiment, the third blocking portion 1263 may be squeezed so that at least a portion of the third blocking portion 1263 extends into the gap between two adjacent battery cells 20 arranged along the first direction X.

[0185] This can further block the adhesive material or solid particles, thereby reducing the impact of the adhesive material or fixed particles entering the gap between adjacent battery cells 20 on the battery cells 20 , thereby improving the reliability of the battery 10 .

[0186] According to some embodiments of the present application, optionally, the first insulating portion 121 is provided with two separated third blocking portions 1263, and the projections of the two third blocking portions 1263 in the third direction Z are located on both sides of the gap between two adjacent battery cells 20 arranged along the second direction Y, and the third direction Z is perpendicular to the first direction X and the second direction Y; and / or,

[0187] The second insulating portion 122 is provided with two separated fourth blocking portions 1264 , the projections of the two fourth blocking portions 1264 in the third direction Z are located on both sides of the gap between two adjacent battery cells 20 arranged along the first direction X, and the third direction Z is perpendicular to the first direction X and the second direction Y.

[0188] The third blocking portion 1263 can restrict the adhesive material or solid particles from entering the gap from both sides of the gap between two adjacent battery cells 20, wherein the two adjacent battery cells 20 can be arranged along the second direction Y. Specifically, the first insulating portion 121 can be provided with two third blocking portions 1263, and optionally, the two third blocking portions 1263 can be arranged in parallel. If the projections of the two third blocking portions 1263 in the third direction Z are located on both sides of the gap between the two battery cells 20, the two third blocking portions 1263 can restrict the adhesive material or fixed particles from both sides of the gap, respectively, to reduce the possibility of the adhesive material or solid particles entering the gap.

[0189] Similarly, the fourth blocking portion 1264 may also restrict the adhesive material or solid particles from entering the gap from both sides of the gap between two adjacent battery cells 20 arranged along the first direction X. Specifically, the second insulating portion 122 may be provided with two fourth blocking portions 1264, and optionally, the two fourth blocking portions 1264 may be provided in parallel on both sides of the gap between two adjacent battery cells 20 arranged along the first direction X, so that the adhesive material or solid particles can be restricted from both sides of the gap, respectively, to reduce the possibility of the adhesive material or solid particles entering the gap.

[0190] In some embodiments, two third blocking portions 1263 may be provided only on the first insulating portion 121; optionally, two fourth blocking portions 1264 may be provided only on the second insulating portion 122; optionally, the third blocking portion 1263 and the fourth blocking portion 1264 may be provided on the insulating member 12 at the same time, so that the gaps between the battery cells 20 arranged along the first direction X and the second direction Y can be protected.

[0191] The third blocking portion 1263 and / or the fourth blocking portion 1264 can restrict the adhesive material or solid particles from entering the gap on both sides of the gap between the battery cells 20, which is conducive to reducing the possibility of the adhesive material or solid particles entering the gap, thereby achieving a close arrangement between the battery cells 20, which can also reduce the influence of the adhesive material or solid particles on the expansion and deformation of the battery cells 20, and improve the service life of the battery 10. At the same time, the provision of blocking portions on both sides of the gap between the battery cells 20 can also reduce the materials required for the blocking portions, reduce production costs, and reduce the weight of the battery 10.

[0192] According to some embodiments of the present application, optionally, at least part of the insulating member 12 is made of a transparent material. Optionally, the first insulating portion 121 and / or the second insulating portion 122 are made of a transparent material. The transparent material may include, for example, PC (polycarbonate), PA66 (polyadiohexylenediamine), PMMA (polymethyl methacrylate), glass fiber, glass, and the like.

[0193] According to some embodiments of the present application, the light transmittance of the first insulating portion 121 and / or the second insulating portion 122 is optionally 20%-100%. The light transmittance refers to the percentage of the luminous flux passing through an object to its incident luminous flux, and the light transmittance of an object can usually be measured using a spectrophotometer.

[0194] Optionally, the light transmittance of the first insulating part 121 and / or the second insulating part 122 may be 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100%.

[0195] The first insulating part 121 may be made of a transparent material, wherein the transparent material may refer to a material with a light transmittance of 20%-100%. The transparent material allows light to penetrate the first insulating part 121 and reach the other side of the first insulating part 121 from one side of the first insulating part 121. In the embodiment of the present application, the transparent material allows light to penetrate from one side of the first insulating part 121 in the third direction Z to the other side. Optionally, the second insulating part 122 may also be made of a transparent material; optionally, the first insulating part 121 and the second insulating part 122 may both be made of a transparent material.

[0196] Transparent materials are useful for observing the situation on one side from the other. For example, during the process of applying the adhesive material, the specific coating location can be observed through the transparent portion. For another example, the flow of the adhesive material during the process of bonding the insulating part 12 to the battery cell 20 can be observed through the transparent portion. When the adhesive material is applied too much or too little, the process can be adjusted in time to improve the pass rate during the production process of the battery 10.

[0197] During the assembly process, the first insulating part 121 and / or the second insulating part 122 are made of a material with a light transmittance of 20%-100%, which is conducive to observing and controlling the assembly process, so that adjustments can be made in time to improve the qualification rate of the battery 10 during the production process.

[0198] According to some embodiments of the present application, optionally, the battery 10 further includes an adhesive layer, and the adhesive layer is used to bond the insulating member 12 and the battery cell 20 .

[0199] The insulating member 12 can be fixedly connected to the battery cell 20 by bonding. Specifically, the bonding between the two can be achieved by coating bonding material on the surface of the insulating member 12 and / or the battery cell 20. The structure formed by the bonding material is the bonding layer.

[0200] The adhesive layer can realize the fixed connection between the insulating member 12 and the battery cell 20, so that the battery cell 20 is not easily separated from the insulating member 12 and causes insulation failure. At the same time, the adhesive layer can fix the relative positions between multiple battery cells 20 through the insulating member 12, so that the battery cells 20 are not easily collided with each other in the battery 10 to cause danger.

[0201] According to some embodiments of the present application, optionally, the material of the bonding layer is a photosensitive adhesive.

[0202] Photosensitive adhesives refer to a type of adhesive material that can accelerate solidification by absorbing light of a specific wavelength. For example, UV glue (Ultraviolet Rays Glue) can be converted from liquid to solid in a relatively short period of time after absorbing ultraviolet light under ultraviolet light.

[0203] In some embodiments, at least a portion of the insulating member 12 may be made of a transparent material, and the transparent material may be, for example, a material with a light transmittance in the range of 20%-100%. The photosensitive adhesive may be applied to one side of the transparent material area, for example, the surface facing the battery cell 20, and the light corresponding to the photosensitive adhesive may pass through the transparent material from the other side of the transparent material and act on the photosensitive adhesive, and the photosensitive adhesive absorbs the energy in the corresponding light and solidifies.

[0204] The photosensitive adhesive can accelerate the solidification process through light exposure, thereby reducing the preparation time of the battery 10 and improving the preparation efficiency.

[0205] According to some embodiments of the present application, the battery 10 may include a first box body 111 and a second box body 112. The first box body 111 is a hollow structure with an opening, and a plurality of battery cells 20 are accommodated in the hollow structure; the second box body 112 covers the first box body 111, and the second box body 112 is fixedly connected to the insulating member 12.

[0206] The first housing 111 accommodates a plurality of battery cells 20. In some embodiments, the insulating member 12 may be disposed on the surface of the battery cell 20 facing the opening of the first housing 111. Alternatively, the surface of the battery cell 20 provided with the electrode terminal 21 may face the opening of the first housing 111.

[0207] The second box body 112 can cover the first box body 111 at one end opening of the first box body 111. Optionally, when the first box body 111 is open at both ends, the second box body 112 can also cover the first box body 111 from the openings at both ends. When the second box body 112 covers the first box body 111, it can be fixedly connected to the structure contained in the first box body 111. In some embodiments, the second box body 112 can be fixedly connected to the insulating member 12 contained in the first box body 111 when covering the first box body 111. For example, an adhesive material can be applied to the surface of the second box body 112 facing the hollow structure of the first box body 111, and the second box body 112 can be fixedly connected to the insulating member 12 through the adhesive material when covering the first box body 111; optionally, an adhesive material can also be applied to the surface of the insulating member 12 facing the second box body 112 to achieve a fixed connection between the insulating member 12 and the second box body 112.

[0208] The second box body 112 can further fix the position of the battery cell 20 in the battery 10 by being fixedly connected to the insulating member 12, thereby reducing the shaking of the battery cell 20 in the first box body 111 and the possibility of the battery cell 20 being damaged by collision inside the battery 10, thereby improving the reliability of the battery 10.

[0209] According to some embodiments of the present application, optionally, the second box body 112 is bonded and fixed to the insulating member 12 .

[0210] The second box body 112 and the insulating member 12 can be fixedly connected by applying adhesive material. For example, the second box body 112 and the insulating member 12 can be fixedly connected by foam glue. There is a certain gap between the second box body 112 and the insulating member 12. The foam glue can be filled between the second box body 112 and the insulating member 12 by glue pouring, so as to achieve the bonding and fixation between the second box body 112 and the insulating member 12. The foam glue can have a certain thickness when applied on the surface, which can fill the gap between the second box body 112 and the insulating member 12 and improve the bonding strength between the second box body 112 and the insulating member 12. At the same time, the foam glue has the characteristic of low density. Using foam glue to connect the second box body 112 and the insulating member 12 can also improve the shock resistance of the battery 10.

[0211] An embodiment of the present application further provides an electrical device, comprising the battery 10 described in any of the above embodiments, and the battery 10 is used to provide electrical energy to the electrical device.

[0212] The embodiment of the present application provides a battery 10, including a battery cell 20, an insulating member 12, a busbar 22 and a box 11, wherein the insulating member 12 is fixedly connected to a plurality of battery cells 20 and accommodated in the box 11, and the busbar 22 connects the electrode terminals 21 of two adjacent battery cells 20 to achieve electrical connection between the battery cells 20. The insulating member 12 includes a first insulating portion 121 extending along a first direction X, a second insulating portion 122 extending along a second direction Y, and a connecting portion 123 connecting the first insulating portion 121 and the second insulating portion 122, wherein the first insulating portion 121 is fixedly connected to a plurality of battery cells 20 arranged along the first direction X, and the second insulating portion 122 is fixedly connected to a plurality of battery cells 20 arranged along the second direction Y. The connecting portion 123 is provided with a first through hole 1231 and a second through hole 1232. The first through hole 1231 is used to avoid the electrode terminal 21 of the battery cell 20, and the second through hole 1232 is used to avoid the pressure relief mechanism 23 of the battery cell 20. A first blocking portion 1261 is provided around the first through hole 1231, and a second blocking portion 1262 is provided around the second through hole 1232. The first insulating portion 121 is provided with a third blocking portion 1263, and the second insulating portion 122 is provided with a fourth blocking portion 1264. The insulating member 12 may be an integrally formed structure, and a sampling assembly 125 may be integrated on the insulating member 12 to collect parameters of the battery cell 20.

[0213] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that: include: A plurality of battery cells (20), wherein the plurality of battery cells (20) are arranged in a matrix along a first direction (X) and a second direction (Y), wherein the first direction (X) is perpendicular to the second direction (Y); The insulating member (12) comprises a first insulating portion (121) extending along the first direction (X) and a second insulating portion (122) extending along the second direction (Y), wherein the first insulating portion (121) is fixedly connected to a plurality of battery cells (20) arranged along the first direction (X), and the second insulating portion (122) is fixedly connected to a plurality of battery cells (20) arranged along the second direction (Y).

2. The battery according to claim 1, characterized in that The first insulating portion (121) is fixedly connected to two adjacent battery cells (20) arranged along the second direction (Y), and / or, The second insulating portion (122) is fixedly connected to two adjacent battery cells (20) arranged along the first direction (X).

3. The battery according to claim 1 or 2, characterized in that: The first insulating portion (121) and the second insulating portion (122) are fixedly connected.

4. The battery according to claim 3, characterized in that The first insulating portion (121) is provided with a first groove (131), and the first groove (131) is engaged with the second insulating portion (122); and / or, The second insulating portion (122) is provided with a second groove (132), and the second groove (132) is clamped with the first insulating portion (121).

5. The battery according to claim 1 or 2, characterized in that: The insulating member (12) is an integrally formed structure.

6. The battery according to any one of claims 1 to 5, characterized in that The insulating member (12) comprises a connecting portion (123), and the connecting portion (123) is used to connect the first insulating portion (121) and the second insulating portion (122) on a plane formed by the first direction (X) and the second direction (Y).

7. The battery according to claim 6, characterized in that The battery cell (20) comprises an electrode terminal (21); the connecting portion (123) is provided with a first through hole (1231); the first through hole (1231) is used to avoid the electrode terminal (21).

8. The battery according to claim 7, characterized in that A first blocking portion (1261) is disposed around the first through hole (1231), and the first blocking portion (1261) protrudes from a surface of the insulating member (12) facing the battery cell (20).

9. The battery according to claim 8, characterized in that The first blocking portion (1261) abuts against a surface of the battery cell (20) that faces the insulating member (12).

10. The battery according to any one of claims 7 to 9, characterized in that The insulating member (12) comprises a current collecting component (22), the current collecting component (22) corresponds to two adjacent first through holes (1231), and the two adjacent first through holes (1231) respectively correspond to the electrode terminals (21) of different battery cells (20).

11. The battery according to claim 10, characterized in that The surface of the insulating member (12) that is away from the battery cell (20) at least partially protrudes from the surface of the current collecting component (22) that is away from the battery cell (20).

12. The battery according to any one of claims 6 to 11, characterized in that The battery cell (20) comprises a pressure relief mechanism (23); the connecting portion (123) is provided with a second through hole (1232); the second through hole (1232) is used to avoid the pressure relief mechanism (23).

13. The battery according to claim 12, characterized in that A second blocking portion (1262) is disposed around the second through hole (1232), and the second blocking portion (1262) protrudes from a surface of the insulating member (12) facing the battery cell (20).

14. The battery according to any one of claims 1 to 13, characterized in that The first insulating portion (121) is provided with a third blocking portion (1263), the third blocking portion (1263) protrudes from a surface of the first insulating portion (121) facing the battery cell (20) and extends along the first direction (X); and / or, The second insulating portion (122) is provided with a fourth blocking portion (1264), the fourth blocking portion (1264) protruding from a surface of the second insulating portion (122) facing the battery cell (20) and extending along the second direction (Y).

15. The battery according to claim 14, characterized in that The projection of the third blocking portion (1263) in the third direction (Z) covers the gap between two adjacent battery cells (20) arranged along the second direction (Y), and the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y); and / or, The projection of the fourth blocking portion (1264) in a third direction (Z) covers the gap between two adjacent battery cells (20) arranged along the first direction (X), and the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

16. The battery according to claim 14, characterized in that The first insulating portion (121) is provided with two separated third blocking portions (1263), the projections of the two third blocking portions (1263) in the third direction (Z) are located on both sides of the gap between two adjacent battery cells (20) arranged along the second direction (Y), and the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y); and / or, The second insulating portion (122) is provided with two separated fourth blocking portions (1264), and the projections of the two fourth blocking portions (1264) in a third direction (Z) are located on both sides of a gap between two adjacent battery cells (20) arranged along the first direction (X), and the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

17. The battery according to any one of claims 1 to 16, characterized in that The insulating member (12) comprises a sampling assembly (125), and the sampling assembly (125) is arranged on the first insulating portion (121) and / or the second insulating portion (122).

18. The battery according to any one of claims 1 to 17, characterized in that The light transmittance of the first insulating part (121) and / or the second insulating part (122) is 20%-100%.

19. The battery according to any one of claims 1 to 18, characterized in that The battery also includes: An adhesive layer, the adhesive layer being used to bond the insulating member (12) and the battery cell (20).

20. The battery according to claim 19, characterized in that The material of the bonding layer is a photosensitive adhesive.

21. The battery according to any one of claims 1 to 20, characterized in that The battery comprises: A first box body (111), the first box body (111) being a hollow structure with an opening, and a plurality of battery cells (20) being accommodated in the hollow structure; A second box body part (112), wherein the second box body part (112) covers the first box body part (111), and the second box body part (112) is fixedly connected to the insulating member (12).

22. The battery according to claim 21, characterized in that The second box body (112) is bonded and fixed to the insulating member (12).

23. An electrical device, characterized in that: include: The battery (10) according to any one of claims 1 to 22, wherein the battery (10) is used to provide electrical energy to the electrical device.

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