Battery and electric device

Abstract

Provided in the embodiments of the present application are a battery and an electric device. The reliability of the battery can be improved. The battery comprises: a plurality of battery cells, wherein the plurality of battery cells are arranged in a matrix in a first direction and a second direction, the first direction being perpendicular to the second direction; and an insulating member, which comprises a first insulating portion extending in the first direction and a second insulating portion extending in the second direction, wherein the first insulating portion is fixedly connected to the plurality of battery cells arranged in the first direction, and the second insulating portion is fixedly connected to the plurality of battery cells arranged in the second direction.

Description

Batteries and electrical devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 28, 2023, with application number 202310776824.7 and application name “Batteries and Electrical Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of batteries, and more specifically, to a battery and an electrical device. Background Art

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become a crucial component of the industry's sustainable development. Battery technology, in turn, is a crucial factor in the development of electric vehicles.

[0004] With the development of battery technology, various battery performances are constantly improving. Among them, battery reliability is particularly important. If the reliability of a battery is too low, the battery will be unusable. Therefore, how to improve battery reliability remains an issue that needs to be addressed.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a battery and an electrical device, which can improve the reliability of the battery.

[0007] 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.

[0008] The insulating member can occupy a certain space on the surface of the battery cell, isolating the battery cell from the rest of the battery, making it less likely for the battery cell to come into contact with other parts of the battery, reducing the risk of short circuits in the battery cell and improving battery reliability. The first and second insulating portions, arranged crosswise along the first and second directions, also provide good support, making the battery less susceptible to damage from external forces. Furthermore, the first and second insulating portions of the insulating member can respectively secure multiple battery cells in the first and second directions, forming a single unit. This improves the overall rigidity and mechanical strength of the battery, thereby increasing its reliability and service life.

[0009] 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.

[0010] The first insulating portion and / or the second insulating portion can be fixedly connected to multiple battery cells simultaneously, making the connection between multiple battery cells more stable and further improving the overall rigidity of the battery. This can also reduce the number of first and second insulating portions, which helps save on the manufacturing cost of the insulating components.

[0011] In some embodiments, the first insulating portion and the second insulating portion are fixedly connected.

[0012] This can make the structure of the insulating member more stable and less likely to move relative to each other, which is beneficial 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 can simplify the assembly process and improve production efficiency.

[0013] In some embodiments, the first insulating portion is provided with a first groove, and the first groove is engaged with the second insulating portion; and / or the second insulating portion is provided with a second groove, and the second groove is engaged with the first insulating portion.

[0014] Connecting the first insulating part and the second insulating part by snapping makes the assembly of the two more flexible, and the positions of the first insulating part and the second insulating part can be adjusted according to actual conditions. If 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.

[0015] In some embodiments, the insulating member is an integrally formed structure.

[0016] This can improve the connection strength between the first insulating part and the second insulating part, making it difficult for the first insulating part and the second insulating part to separate, 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.

[0017] 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.

[0018] 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 insulating effect of the insulating member.

[0019] 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.

[0020] The first through-holes reduce interference between the electrode terminals and the insulating member, allowing the electrode terminals to connect to the busbar assembly to achieve electrical connection between different battery cells. Furthermore, the interaction between the first through-holes and the electrode terminals helps position the insulating member in the battery, improving the accuracy of the insulating member's assembly.

[0021] 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.

[0022] The first barrier reduces the likelihood of adhesive material attached to the surface of the connection portion coming into contact with the electrode terminals, thereby reducing the adhesive's impact on the connection between the busbar and the electrode terminals. Furthermore, the first barrier acts as a barrier to solid particles, particularly metal particles, thereby reducing the likelihood of battery short circuits and improving battery reliability.

[0023] In some embodiments, the first blocking portion abuts against a surface of the battery cell facing the insulating member.

[0024] This can improve the sealing effect of the first blocking portion on the surrounding area of ​​the first through hole, and further block 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. At the same time, it can further block the solid particles, especially metal particles, to a certain extent, thereby reducing the probability of battery short circuit and improving the reliability of the battery.

[0025] 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 respectively correspond to electrode terminals of different battery cells.

[0026] The busbar component is connected to the electrode terminal through the first through hole, so as to realize electrical connection between the plurality of battery cells without affecting the insulation performance between the battery cell and other parts of the battery.

[0027] In some embodiments, a surface of the insulating member away from the battery cell at least partially protrudes from a surface of the current busbar component away from the battery cell.

[0028] 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.

[0029] In some embodiments, the battery cell includes a pressure relief mechanism, and the connecting portion is provided with a second through hole, and the second through hole is used to avoid the pressure relief mechanism.

[0030] 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.

[0031] 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.

[0032] The second blocking portion protects the pressure relief mechanism within the second through hole and restricts the flow of adhesive material into the pressure relief mechanism, reducing the likelihood of adhesive material adhering to the surface of the insulating member contacting the pressure relief mechanism. This reduces the likelihood of the pressure relief mechanism becoming stuck and difficult to actuate, thereby improving battery reliability. The second blocking portion also blocks solid particles, reducing the likelihood of damage to the pressure relief mechanism and improving battery reliability.

[0033] 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.

[0034] The third and / or fourth blocking portions can protect the gaps between adjacent battery cells, limiting the flow of adhesive material into the gaps between the battery cells, facilitating close arrangement of the battery cells. This can also reduce the impact of the adhesive material on the expansion and deformation of the battery cells, thereby increasing the battery's service life. Furthermore, the third and / or fourth blocking portions can also provide a barrier to solid particles, reducing the probability of solid particles falling into the gaps between adjacent battery cells, thereby reducing the probability of solid particles damaging the battery cells and improving battery reliability.

[0035] 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.

[0036] The third and / or fourth blocking portions can restrict the flow of adhesive material into the gaps between battery cells by covering the gaps between them, facilitating close arrangement of the battery cells. This also reduces the effect of the adhesive material on the expansion and deformation of the battery cells, thereby increasing the battery's service life. Furthermore, the probability of solid particles falling into the gaps between adjacent battery cells can be further reduced, further reducing the probability of solid particles damaging the battery cells, thereby improving battery reliability.

[0037] 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.

[0038] The third and / or fourth blocking portions can restrict the entry of adhesive materials or solid particles into the gaps between the battery cells on both sides, thereby reducing the possibility of adhesive materials or solid particles entering the gaps, thereby achieving a close arrangement of the battery cells. This can also reduce the impact of adhesive materials or solid particles on the expansion and deformation of the battery cells, thereby increasing the service life of the battery. Furthermore, providing blocking portions on both sides of the gaps between the battery cells can reduce the material consumption of the blocking portions, lowering production costs and reducing the weight of the battery.

[0039] 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.

[0040] 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 the production cost of the sampling assembly.

[0041] In some embodiments, the light transmittance of the first insulating portion and / or the second insulating portion is 20%-100%.

[0042] During the assembly process, the first insulating part and / or the second insulating part are made of a material with a light transmittance of 20%-100%, which is conducive to observing and controlling the assembly process, so that timely adjustments can be made to improve the qualification rate in the battery production process.

[0043] 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.

[0044] The adhesive layer secures the insulating member to the battery cells, preventing them from separating from the insulating member and causing insulation failure. Furthermore, the adhesive layer secures the relative positions of the battery cells through the insulating member, preventing them from colliding with each other and causing danger.

[0045] In some embodiments, the material of the adhesive layer is a photosensitive adhesive.

[0046] Photosensitive adhesives can accelerate the solidification process through light, reduce battery preparation time and improve preparation efficiency.

[0047] In some embodiments, the battery includes: a first box body, which is a hollow structure with an opening, and multiple battery cells are accommodated in the hollow structure; a second box body, which covers the first box body and is fixedly connected to the insulating member.

[0048] The second box portion 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 portion, and reduce the possibility of the battery cell being damaged by collision inside the battery, thereby improving the reliability of the battery.

[0049] In some embodiments, the second box portion is bonded and fixed to the insulating member.

[0050] The adhesive can be applied to the surface with a certain thickness to fill the gap between the second housing and the insulating member, thereby improving the bonding strength between the second housing and the insulating member. Using the adhesive to connect the second housing and the insulating member can also improve the battery's shock resistance.

[0051] In a second aspect, an electrical device is provided, comprising the battery 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

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. 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 creative work.

[0053] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application.

[0054] FIG2 is a schematic diagram of the exploded structure of a battery provided in an embodiment of the present application.

[0055] FIG3 is a schematic diagram of the exploded structure of another battery provided in an embodiment of the present application.

[0056] FIG4 is a schematic diagram of the exploded structure of an insulating component provided in an embodiment of the present application.

[0057] FIG5 is a schematic structural diagram of another insulating member provided in an embodiment of the present application.

[0058] FIG6 is a schematic structural diagram of another insulating member provided in an embodiment of the present application.

[0059] FIG7 is an enlarged structural diagram of part A in FIG6 .

[0060] FIG8 is a schematic diagram of the exploded structure of another battery provided in an embodiment of the present application.

[0061] FIG9 is a schematic structural diagram of another battery provided in an embodiment of the present application.

[0062] FIG10 is an enlarged structural diagram of part B in FIG9 .

[0063] FIG11 is a schematic structural diagram of another battery provided in an embodiment of the present application.

[0064] FIG12 is a schematic structural diagram of another battery provided in an embodiment of the present application.

[0065] FIG13 is an enlarged structural diagram of portion C in FIG11 .

[0066] FIG14 is a schematic structural diagram of another insulating member provided in an embodiment of the present application.

[0067] FIG15 is an enlarged structural diagram of portion D in FIG12 .

[0068] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0069] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0070] In the description of this application, it should be noted that, unless otherwise specified, "plurality" means more than two. Terms such as "upper," "lower," "left," "right," "inner," and "outer" to indicate positions or locations are used solely for the purpose of describing and simplifying this application. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting this application. Furthermore, terms such as "first," "second," and "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Perpendicular" does not mean perpendicular in the strict sense, but rather within a tolerance range. "Parallel" does not mean parallel in the strict sense, but rather within a tolerance range. All technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. Terms used in this application and in the specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including," "having," and any variations thereof in the specification, claims, and accompanying figures of this application are intended to cover non-exclusive inclusions.

[0071] 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.

[0072] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0073] The term "and / or" in this application simply describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist, and B exists. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0074] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0075] 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 in different embodiments are omitted. 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 for illustrative purposes only and should not constitute any limitation on the present application.

[0076] In this 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 this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0077] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. Batteries generally include a housing that encloses one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0078] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive electrode collector. The uncoated positive electrode collector protrudes from the coated positive electrode collector, and the uncoated positive electrode collector serves as the positive electrode tab. For lithium-ion batteries, for example, the positive electrode current collector can be made of 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 current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative electrode collector. The uncoated negative electrode collector protrudes from the coated negative electrode collector, and the uncoated negative electrode collector serves as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be made of carbon, silicon, lithium metal, or a lithium alloy. To allow high current to pass without fusing, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The separator can be made of polypropylene (PP) or polyethylene (PE). In addition, the electrode assembly in the embodiments of the present application includes, but is not limited to, a wound structure or a laminated structure.

[0079] 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.

[0080] In view of this, an embodiment of the present application provides a battery that uses an insulating member to insulate a battery cell from the rest of the battery. 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 not only provide insulation for each battery cell, but also enhance the overall rigidity of the battery module formed by the plurality of battery cells, improving the mechanical strength and reliability of the battery, thereby facilitating a longer battery life.

[0081] 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. 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.

[0082] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device.

[0083] For example, as shown in FIG1 , 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 provided 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 provided at the bottom, front or rear of the vehicle 1. The battery 10 may be used to power 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.

[0084] To meet different power requirements, a battery can include multiple battery cells, which can be connected in series, parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections. A battery can also be referred to as a battery pack. Alternatively, multiple battery cells can be connected in series, parallel, or in a hybrid configuration to form a battery module, which can then be connected in series, parallel, or in a hybrid configuration to form a battery. In other words, multiple battery cells can be directly connected to form a battery, or they can be first connected to form battery modules, which can then be connected to form a battery.

[0085] For example, Figure 2 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application. 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 further include a housing 11, the interior of the housing 11 being a hollow structure, and the plurality of battery cells 20 being accommodated in the housing 11. Figure 2 shows a possible implementation of the housing 11 of an embodiment of the present application. As shown in Figure 2, the housing 11 may include two parts, referred to herein as a first housing portion 111 and a second housing portion 112, which are snapped together. The shapes of the first housing portion 111 and the second housing portion 112 may be determined according to the shape of the battery module 200 combination, and at least one of the first housing portion 111 and the second housing portion 112 has an opening. For example, as shown in Figure 2, 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.

[0086] For another example, unlike that shown in Figure 2, only one of the first and second housing portions 111, 112 may be a hollow rectangular parallelepiped with an opening, while the other may be a plate-shaped structure to cover the opening. For example, in this example, the second housing portion 112 is a hollow rectangular parallelepiped with only one open face, and the first housing portion 111 is a plate-shaped structure. In this example, the first housing portion 111 covers the opening of the second housing portion 112 to form a housing 11 having a closed chamber, which can be used to accommodate multiple battery cells 20. The multiple battery cells 20 are connected in parallel, in series, or in a mixed combination and then placed within the housing 11 formed by the first and second housing portions 111, 112 being fastened together.

[0087] Optionally, the battery 10 may also include other structures, which will not be described in detail here. For example, the battery 10 may also include a busbar component, which is used to achieve electrical connection between multiple battery cells 20, such as parallel, series, or mixed connection. Specifically, the busbar component can achieve electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Furthermore, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through the box 11 via a conductive mechanism.

[0088] The number of battery cells 20 in a battery module 200 can be set to any value based on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or in a hybrid manner to achieve higher capacity or power. Because each battery 10 may include a large number of battery cells 20, for ease of installation, the battery cells 20 are arranged in groups, with each group of battery cells 20 forming a battery module 200. The number of battery cells 20 included in a battery module 200 is not limited and can be set according to requirements.

[0089] The battery 10 may include a plurality of battery modules 200 , which may be connected in series, in parallel, or in a hybrid manner.

[0090] FIG3 is a schematic diagram of the exploded structure of a battery 10 provided in an embodiment of the present application. The battery 10 shown in FIG3 may include a plurality of battery cells 20 and an insulating member 12 .

[0091] 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 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.

[0092] 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.

[0093] As can be seen in Figure 3, a matrix arrangement refers to arranging multiple battery cells 20 along a first direction X and a second direction Y. The first direction X may be a direction extending along a side of the battery cell 20, such as the length of the battery cell 20. The second direction Y is perpendicular to the first direction X, such as the thickness of the battery cell 20. In some embodiments, the electrode terminals 21 of the multiple battery cells 20 may be located on a plane formed by the first direction X and the second direction Y.

[0094] Arranging the battery cells 20 in a matrix along the first direction X and the second direction Y means that the 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 battery cells 20 may be arranged in multiple rows, with each row having the same number of battery cells 20; or the battery cells 20 may be arranged in multiple columns, with each column having the same number of battery cells 20.

[0095] The insulating member 12 refers to a structure within the battery 10 that insulates the battery cell 20 from the rest of the battery 10. Specifically, the insulating member 12 can occupy a certain space on the surface of the battery cell 20, making it difficult for the battery cell 20 to come into contact with other parts of the battery 10, thereby insulating the battery cell 20. In some embodiments, the insulating member 12 can be disposed between the battery cell 20 and the housing 11 to insulate the battery cell 20 from the housing 11 of the battery 10. Specifically, the insulating member 12 can be disposed between the plane where the electrode terminal 21 of the battery cell 20 is located and a first wall, which can be a wall of the housing 11 opposite the plane where the electrode terminal 21 is located. The insulating member 12 can be made of an insulating material and occupy a certain space between the battery cell 20 and the housing 11, making it difficult for the battery cell 20 to come into contact with the wall of the housing 11, thereby insulating the electrode terminal 21 from the housing 11 of the battery 10.

[0096] The first insulating portion 121 is the portion of the insulating member 12 extending along the first direction X, and the second insulating portion 122 is the portion of the insulating member 12 extending along the second direction Y. The first insulating portion 121 and the second insulating portion 122 can be arranged on the same plane. In some embodiments, the first insulating portion 121 and the second insulating portion 122 can be a single, integrally formed structure; alternatively, the first insulating portion 121 and the second insulating portion 122 can be two separate parts connected to each other by a connecting structure. In some embodiments, the insulating member 12 can include at least one first insulating portion 121 and at least one second insulating portion 122. The at least one first insulating portion 121 can correspond to a group of battery cells 20 arranged along the first direction X, and the at least one second insulating portion 122 can correspond to a group of battery cells 20 arranged along the second direction Y. Figure 3 illustrates a case where the insulating member 12 includes multiple first insulating portions 121 and multiple second insulating portions 122. As shown in Figure 3, the multiple first insulating portions 121 and the multiple second insulating portions 122 can form a mesh-like insulating member 12.

[0097] The first insulating portion 121 can be fixedly connected to a plurality of battery cells 20 arranged along a first direction X to connect the plurality of battery cells 20 arranged along the first direction X into a single unit, thereby reducing shaking of the battery cells 20 and collisions between adjacent battery cells 20. Similarly, the second insulating portion 122 can be fixedly connected to a plurality of battery cells 20 arranged along a second direction Y to connect the plurality of battery cells 20 arranged along the second direction Y into a single unit. In some embodiments, the first insulating portion 121 and the second insulating portion 122 form a mesh-like insulating member 12, so that the plurality of battery cells 20 can be fixed in the first direction X and the second direction Y, thereby further improving the stability between the plurality of battery cells 20.

[0098] In some embodiments, the first insulating portion 121 can be fixedly connected to a group of battery cells 20 arranged along a first direction X, and each group of battery cells 20 can correspond to a first insulating portion 121. Alternatively, the first insulating portion 121 can be fixedly connected to two adjacent groups of battery cells 20 arranged along the first direction X, and each two adjacent groups of battery cells 20 arranged along the first direction X can correspond to a first insulating portion 121. Similarly, the second insulating portion 122 can be fixedly connected to a group of battery cells 20 arranged along a second direction Y, and can also be fixedly connected to two adjacent groups of battery cells 20 arranged along the second direction Y.

[0099] The insulating member 12 occupies a certain space on the surface of the battery cell 20, isolating the battery cell 20 from the rest of the battery 10. This prevents the battery cell 20 from coming into contact with the rest of the battery 10, reduces the risk of short circuits in the battery cell 20, and improves 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, also provide good support, making the battery 10 less susceptible to damage from external forces. Furthermore, the first insulating portion 121 and the second insulating portion 122 of the insulating member 12 can secure multiple battery cells 20 in the first direction X and the second direction Y, respectively, forming a single unit. This improves the overall rigidity and mechanical strength of the battery 10, thereby increasing its reliability and service life.

[0100] 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.

[0101] While the first insulating portion 121 is fixedly connected to the plurality of battery cells 20 arranged along the first direction X, it 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.

[0102] 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 part of the gap between the two adjacent battery cells 20 arranged along the first direction X.

[0103] 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.

[0104] The first insulating portion 121 and / or the second insulating portion 122 can be simultaneously fixedly connected to more battery cells 20, making the connection between the multiple battery cells 20 more stable and further improving the overall rigidity of the battery 10. This can also reduce the number of first insulating portions 121 and second insulating portions 122, which helps save the manufacturing cost of the insulating member 12.

[0105] According to some embodiments of the present application, optionally, the first insulating portion 121 and the second insulating portion 122 are fixedly connected.

[0106] The fixed connection between the first insulating portion 121 and the second insulating portion 122 refers to the fixing of the relative positions of the first insulating portion 121 and the second insulating portion 122. In one possible embodiment, the first insulating portion 121 and the second insulating portion 122 can be fixedly connected by a snap connection, such as a snap connection, a shaft hole connection, a groove connection, etc. In another possible embodiment, the first insulating portion 121 and the second insulating portion 122 can be fixedly connected by a fastener, such as a bolt or screw. In another possible embodiment, the first insulating portion 121 and the second insulating portion 122 can be fixedly connected by bonding.

[0107] The fixed connection between the first insulating portion 121 and the second insulating portion 122 can make the structure of the insulating member 12 more stable and less prone to relative movement, thereby providing good insulation performance for the battery 10. Furthermore, the fixed connection between the first insulating portion 121 and the second insulating portion 122 as a whole can simplify the assembly process and improve production efficiency.

[0108] 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,

[0109] 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 .

[0110] The first insulating portion 121 and / or the second insulating portion 122 can be engaged with each other by providing grooves, as shown in FIG4 , which shows a schematic diagram of an exploded structure of the insulating member 12 .

[0111] In one possible embodiment, the first insulating portion 121 may be provided with a first groove 131. 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 dimension of the first groove 131 in the first direction X is substantially equal to the dimension of the second insulating portion 122 in the first direction X. The first groove 131 is then engaged with the second insulating portion 122 to restrict the position of the second insulating portion 122 in the first direction X.

[0112] In one possible embodiment, 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 dimension of the second groove 132 in the second direction Y is substantially equal to the dimension of the first insulating portion 121 in the second direction Y. The second groove 132 is then engaged with the first insulating portion 121 to limit the position of the first insulating portion 121 in the second direction Y.

[0113] In one possible embodiment, 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 each other. The dimension of the first groove 131 in the first direction X is substantially equal to the dimension of the second insulating portion 122 in the first direction X, and the dimension of the second groove 132 in the second direction Y is substantially equal to the dimension 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, thereby simultaneously limiting the positions of the first insulating portion 121 and the second insulating portion 122 in the first direction X and the second direction Y.

[0114] 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.

[0115] According to some embodiments of the present application, optionally, the insulating member 12 is an integrally formed structure.

[0116] As shown in Figure 5 , the insulating member 12 is an integrally formed structure. For example, a mold can 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.

[0117] 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.

[0118] 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.

[0119] Figures 6 and 7 show the structure of an insulating part 12 provided in an embodiment of the present application, wherein Figure 7 is an enlarged structural schematic diagram of part A in Figure 6. In Figures 6 and 7, the first insulating part 121 extends along the first direction X, the second insulating part 122 extends along the second direction Y, the first insulating part 121 and the second insulating part 122 are interconnected to form a mesh structure, and the structure used to fill at least part of the area of ​​the grid in the mesh structure is the connecting part 123. Specifically, at least one of the two ends of the connecting part 123 along the first direction X is connected to the second insulating part 122, and at least one of the two ends of the connecting part 123 along the second direction Y is connected to the first insulating part 121. In some embodiments, the connecting part 123 can also be made of an insulating material. In some embodiments, the first insulating part 121, the second insulating part 122 and the connecting part 123 are an integrally formed structure.

[0120] In some embodiments, a reinforcement structure 124 may be provided between adjacent connecting portions 123. As shown in FIG7 , a reinforcement structure 124 may be provided between two adjacent connecting portions 123 in the second direction Y. Multiple 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 increase the strength of the edge of the insulating member 12. In some embodiments, the reinforcement structure 124 may include reinforcing ribs. 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.

[0121] 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 .

[0122] According to some embodiments of the present application, optionally, the battery cell 20 includes an electrode terminal 21 , and the connecting portion 123 is provided with a first through hole 1231 , and the first through hole 1231 is used to avoid the electrode terminal 21 .

[0123] Figure 8 shows an exploded schematic diagram of a battery 10 provided in an embodiment of the present application. Figure 9 shows the assembled structure of the insulating member 12 and the battery cell 20. Figure 10 is an enlarged schematic diagram of portion B in Figure 9. As shown in Figures 6 to 10, a first through hole 1231 can be provided in the connecting portion 123, extending through the connecting portion 123 in the third direction Z. The third direction Z is perpendicular to the plane formed by the first direction X and the second direction Y and can refer to the thickness direction of the insulating member 12.

[0124] The first through-holes 1231 are provided corresponding to the electrode terminals 21. Optionally, each first through-hole 1231 on the insulating member 12 can correspond to an electrode terminal 21. The first through-holes 1231 can avoid interference between the electrode terminals 21 and the insulating member 12. As shown in Figures 9 and 10, at least a portion of the electrode terminal 21 is accommodated in the first through-holes 1231. The location of the electrode terminal 21 is not covered by the insulating member 12, allowing the electrode terminal 21 to connect to the busbar 22, thereby achieving electrical connection between different battery cells 20.

[0125] The first through-holes 1231 can reduce interference between the electrode terminals 21 and the insulating member 12, allowing the electrode terminals 21 to connect to the busbar 22 to achieve electrical connection between different battery cells 20. Furthermore, the interaction between the first through-holes 1231 and the electrode terminals 21 can also help position the insulating member 12 in the battery 10, thereby improving the accuracy of the insulating member 12 assembly position.

[0126] 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 .

[0127] The pressure relief mechanism 23 is an element or component that activates to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold. "Activation" refers to the action of the pressure relief mechanism 23, thereby releasing the internal pressure and temperature of the battery cell 20. The action of the pressure relief mechanism 23 may include, but is not limited to, rupturing, tearing, or melting at least a portion of the pressure relief mechanism 23. Upon activation, the high-temperature, high-pressure substances within the battery cell 20 are discharged from the pressure relief mechanism 23 as exhaust. The predetermined threshold can be adjusted based on design requirements. The predetermined threshold may depend on the materials of one or more of the positive electrode sheet, negative electrode sheet, electrolyte, and separator in the battery cell 20. The pressure relief mechanism 23 can be a pressure-sensitive or temperature-sensitive element or component. Specifically, when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold, the pressure relief mechanism 23 activates, thereby creating 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, separator fragments, high-temperature and high-pressure gases generated by the reaction, flames, and the like.

[0128] The pressure relief mechanism 23 on the battery cell 20 has a significant impact on the reliability of the battery 10. For example, if a battery cell 20 experiences a short circuit or overcharge, thermal runaway may occur within the battery cell 20, causing a sudden increase in pressure or temperature. In this case, the pressure relief mechanism 23 is activated to release the internal pressure and temperature, thereby reducing the possibility of explosion or fire in the battery cell 20.

[0129] As shown in Figures 6 to 10, the second through hole 1232 can be provided in the connecting portion 123, passing through 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 internal pressure and temperature. As shown in Figures 9 and 10, 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.

[0130] 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 .

[0131] 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 respectively correspond to electrode terminals 21 of different battery cells 20 .

[0132] The busbar assembly 22 can be used to electrically connect multiple battery cells 20, such as in parallel, series, or mixed connection. Specifically, the busbar assembly 22 can electrically connect the battery cells 20 by connecting to the electrode terminals 21 of the battery cells 20. Furthermore, the busbar assembly 22 can be fixed to the electrode terminals 21 of the battery cells 20 by welding, allowing the electrical energy of the multiple battery cells 20 to be further extracted through the housing 11 via a conductive mechanism.

[0133] FIG11 is a schematic diagram of the assembly structure of the insulating member 12, the battery cells 20, and the busbar 22. As shown in FIG8 to FIG11, the busbar 22 is used to connect the electrode terminals 21 of two adjacent battery cells 20. The electrode terminals 21 correspond to the first through-holes 1231. Therefore, the busbar 22 needs to correspond to two adjacent first through-holes 1231. The two adjacent first through-holes 1231 correspond to the electrode terminals 21 of different battery cells 20, respectively. Thus, the busbar 22 can achieve 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. The busbar 22 can cover the first through-holes 1231 to connect with the electrode terminals 21.

[0134] In one 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 through the first through hole 1231 by welding or other means.

[0135] In one possible embodiment, as shown in Figure 12, the insulating member 12 and the current collecting member 22 can be prefabricated into an integrated connection assembly 13. During assembly, the connection assembly 13 can be positioned as a single unit 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. When the connection assembly 13 is fixedly connected to the battery cell 20, these two adjacent first through-holes 1231 correspond to the electrode terminals 21 of different battery cells 20. Assembling multiple battery cells 20 together using the connection assembly 13 improves the overall rigidity of the battery 10 while simplifying the assembly process and increasing assembly efficiency.

[0136] The busbar member 22 is connected to the electrode terminal 21 through the first through hole 1231 , thereby achieving 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 .

[0137] 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 .

[0138] Figure 13 shows an enlarged structural schematic diagram of part C in Figure 11. As shown in Figure 13, the surface of the insulating part 12 away from the battery cell 20 refers to the surface of the insulating part 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 busbar component 22 on the side that is not connected to the electrode terminal 21 in the third direction Z.

[0139] 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 further include a reinforcing structure 124. These structures on the insulating member 12 may cause the thickness of the insulating member 12 to vary at different locations. 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 22 away from the battery cell 20. In conjunction with Figure 13, it can be seen that at least a portion of the insulating member 12 is higher than the plane where the busbar 22 is located.

[0140] Optionally, the relationship between the surface of the insulating member 12 facing away from the battery cell 20 and the surface of the current collecting component 22 facing 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 .

[0141] As shown in FIG13 , taking the reinforcement 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 if there is an area on the insulating member 12 that is higher than the reinforcement structure 124, 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.

[0142] Similarly, the busbar component 22 may also have certain structures that cause the thickness of the busbar component 22 to vary at different locations. As shown in FIG13 , taking the area of ​​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 as an example, 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 location 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.

[0143] 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 busbar component 22 away from the battery cell 20. Then, inside the battery 10, the busbar component 22 is more difficult to contact the wall of the box body 11 than the insulating member 12.

[0144] In one possible embodiment, the portion of the insulating member 12 that protrudes from the surface of the current-collecting component 22 away from the battery cells 20 may be connected to the inner wall of the case 11. For example, the insulating member 12 may abut or adhere to the inner wall of the case 11. Because at least a portion of the insulating member 12 protrudes from the surface of the current-collecting component 22 away from the battery cells 20, when the insulating member 12 is connected to the inner wall of the case 11, the current-collecting component 22 is unlikely to come into contact with the inner wall of the case 11.

[0145] This can reduce the possibility of the busbar component 22 contacting the wall of the battery box 11 and causing 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.

[0146] According to some embodiments of the present application, optionally, the insulating member 12 includes a sampling assembly 125 , and the sampling assembly 125 is disposed on the first insulating portion 121 and / or the second insulating portion 122 .

[0147] The sampling assembly 125 is used to sample signals from the battery cells 20. For example, the sampling assembly 125 can be configured to obtain parameters such as the voltage and current of the battery cells 20. Alternatively, the sampling assembly 125 can also be configured to obtain parameters such as the temperature and expansion force of the battery cells 20. The sampling assembly 125 can include a flexible circuit board, a printed circuit board, a conductor, etc.

[0148] In some embodiments, the sampling assembly 125 can 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. This is shown in Figures 11 to 13 . In this case, the sampling assembly 125 can be integrated with the first insulating portion 121 of the insulating member 12, eliminating the need for a separate supporting component for the sampling assembly 125.

[0149] 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 of the insulating member 12, eliminating the need for an additional supporting component for the sampling assembly 125.

[0150] In some embodiments, the sampling assembly 125 can be disposed on both the first insulating portion 121 and the second insulating portion 122 to sample 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. Alternatively, the sampling assembly 125 can be integrated with the first insulating portion 121 and the second insulating portion 122 of the insulating member 12.

[0151] In one possible embodiment, the sampling assembly 125, the current collecting member 22, and the insulating member 12 may be separate components that are then assembled with the battery cell 20 during the assembly process. In another possible embodiment, the insulating member 12 and the current collecting member 22 are assembled as a whole with the battery cell 20, and the sampling assembly 125 is assembled as a separate component. 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 current collecting member 22. In other words, the sampling assembly 125, the insulating member 12, and the current collecting member 22 may be pre-fabricated as an integrated connecting assembly 13. During the assembly process, the connecting assembly 13 is placed as a whole on the surface of the battery cell 20. Assembling multiple battery cells 20 together through the connecting assembly 13 can improve the overall rigidity of the battery 10 while simplifying the assembly steps and improving assembly efficiency.

[0152] 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 the production cost of the sampling assembly 125 .

[0153] According to some embodiments of the present application, optionally, the sampling component 125 is close to the electrode terminal 21 .

[0154] The sampling assembly 125 can be disposed on the first insulating portion 121 and / or the second insulating portion 122 near the electrode terminal 21. For example, it can be disposed on the edge of the first insulating portion 121 and / or the second insulating portion 122 near the electrode terminal 21. In some embodiments, the sampling assembly 125 can be connected to the busbar 22. Optionally, a groove can be provided on the busbar 22, forming a receiving space for accommodating at least a portion of the sampling assembly 125. This allows the parameters of the battery cells 20 to be sampled without affecting the electrical connections between the battery cells 20.

[0155] This facilitates the sampling component 125 to sample the relevant parameters of the battery cell 20 , and also improves the accuracy of the parameters of the battery cell 20 obtained by the sampling component 125 .

[0156] According to some embodiments of the present application, optionally, a first blocking portion 1261 is provided 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 .

[0157] Figure 14 shows a schematic structural diagram of an insulating member 12 provided in an embodiment of the present application, specifically, Figure 14 shows the surface structure of the insulating member 12 facing the battery cell 20. Figure 15 is an enlarged structural diagram of portion D in Figure 14 .

[0158] The first blocking portion 1261 is disposed around the first through hole 1231 and protrudes from the surface of the insulating member 12 facing the battery cell 20. Specifically, it may protrude from the surface of the connecting portion 123 facing the battery cell 20. For example, the first blocking portion 1261 may be annular and surround the first through hole 1231. Alternatively, the first blocking portion 1261 may surround the first through hole 1231 along its edge. Alternatively, the sidewalls of the inner ring of the first blocking portion 1261 may be coplanar with the wall of the first through hole 1231. In one possible embodiment, a first blocking portion 1261 may be disposed around each first through hole 1231. Alternatively, the first blocking portion 1261 may be integrally formed with the insulating member 12. Alternatively, the first blocking portion 1261 may be a sealing strip or foam provided on the surface of the insulating member 12 facing the battery cell 20.

[0159] In some embodiments, the surface of the insulating member 12 facing the battery cell 20 may be coated with an adhesive material to achieve adhesion between the insulating member 12 and the battery cell 20. The first barrier 1261 can restrict the flow of the adhesive material into 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 barrier 1261 can provide a certain barrier to solid particles. For example, the first barrier 1261 can reduce the possibility of metal particles contacting the electrode terminal 21, thereby reducing the probability of a short circuit in the battery 10.

[0160] The first barrier 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 impact of the adhesive material on the connection between the busbar 22 and the electrode terminal 21. At the same time, the first barrier 1261 can play a certain role in blocking solid particles, especially metal particles, thereby reducing the probability of short circuiting of the battery 10 and improving the reliability of the battery 10.

[0161] 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 .

[0162] In the third direction Z, the surface of the first barrier 1261 facing the battery cell 20 contacts the surface of the battery cell 20 facing the insulating member 12. Optionally, the first barrier 1261 may be made of an elastic material and may be compressed to a certain extent during the assembly process of the battery 10 to improve the sealing between the first barrier 1261 and the battery cell 20, thereby improving the barrier effect of the first barrier 1261 on adhesive materials or solid particles.

[0163] 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 impact 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, thereby reducing the probability of short circuit of the battery 10 and improving the reliability of the battery 10.

[0164] According to some embodiments of the present application, optionally, a second blocking portion 1262 is provided around the second through hole 1232 , and the second blocking portion 1262 protrudes from the surface of the insulating member 12 facing the battery cell 20 .

[0165] As shown in Figures 14 and 15, the second blocking portion 1262 is disposed around the second through-hole 1232, protruding from the surface of the insulating member 12 facing the battery cell 20. Specifically, it may protrude from the surface of the connecting portion 123 facing the battery cell 20. For example, the second blocking portion 1262 may be annular and surround the first through-hole 1231. Alternatively, the second blocking portion 1262 may surround the second through-hole 1232 along its edge. Alternatively, the sidewalls of the inner ring of the second blocking portion 1262 may be coplanar with the wall of the second through-hole 1232. In one possible embodiment, a second blocking portion 1262 may be disposed around each second through-hole 1232. Alternatively, the second blocking portion 1262 may be integrally formed with the insulating member 12. Alternatively, the second blocking portion 1262 may be a sealing strip or foam provided on the surface of the insulating member 12 facing the battery cell 20.

[0166] In some embodiments, the surface of the insulating member 12 facing the battery cell 20 may be coated with an adhesive material to achieve adhesion between the insulating member 12 and the battery cell 20. The second blocking portion 1262 can restrict the flow of the adhesive material into the second through hole 1232, thereby reducing the possibility of the adhesive material attached to the surface of the connecting portion 123 coming into contact with the pressure relief mechanism 23 in the second through hole 1232. In some embodiments, the second blocking portion 1262 can provide a certain barrier to solid particles. For example, the second blocking portion 1262 can reduce the possibility of solid particles coming into contact with the pressure relief mechanism 23, thereby reducing the probability of damage to the pressure relief mechanism 23.

[0167] The second blocking portion 1262 protects the pressure relief mechanism 23 within the second through hole 1232 and restricts the flow of adhesive material into the pressure relief mechanism 23, thereby reducing the likelihood of adhesive material adhering to the surface of the insulating member 12 coming into contact with the pressure relief mechanism 23 and thus reducing the likelihood of the pressure relief mechanism 23 becoming stuck and difficult to actuate, thereby improving the reliability of the battery 10. Furthermore, the second blocking portion 1262 blocks solid particles to a certain extent, thereby reducing the probability of damage to the pressure relief mechanism 23 and improving the reliability of the battery 10.

[0168] 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 .

[0169] In the third direction Z, the surface of the second barrier portion 1262 facing the battery cell 20 contacts the surface of the battery cell 20 facing the insulating member 12. Optionally, the second barrier portion 1262 may be made of an elastic material and may be compressed to a certain extent during the assembly process of the battery 10 to improve the sealing between the second barrier portion 1262 and the battery cell 20, thereby improving the barrier effect of the second barrier portion 1262 against adhesive materials or solid particles.

[0170] 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 area surrounding 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.

[0171] 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 the surface of the first insulating portion 121 facing the battery cell 20 and extends along the first direction X; and / or,

[0172] 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.

[0173] As shown in Figures 14 and 15, 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, thereby reducing the adhesive material attached to the surface of the insulating member 12 from flowing into the gap between the battery cells 20 and affecting 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.

[0174] The fourth barrier 1264 may protrude from the surface of the second insulating portion 122 facing the battery cells 20. The fourth barrier 1264 may extend along the second direction Y. Optionally, the dimension of the fourth barrier 1264 in the second direction Y may be the same as the dimension of the second insulating portion 122 in the second direction Y. Optionally, the fourth barrier 1264 may be integrally formed with the insulating member 12. Optionally, the fourth barrier 1264 may be a sealing strip or foam provided on the surface of the insulating member 12 facing the battery cells 20. The fourth barrier 1264 is used to restrict the flow of adhesive material applied to the insulating member 12 into the gap between two adjacent battery cells 20 in the first direction X, thereby reducing the flow of adhesive material adhered to the surface of the insulating member 12 into the gap between the battery cells 20 and affecting the close arrangement of the battery cells 20. In addition, the fourth barrier 1264 can also provide a barrier against solid particles, reducing the probability of solid particles falling into the gap between two adjacent battery cells 20 in the first direction X, thereby reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0175] 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.

[0176] The third barrier 1263 and / or the fourth barrier 1264 can protect the gaps between adjacent battery cells 20, restricting the flow of adhesive material into the gaps between the battery cells 20, thereby facilitating close arrangement of the battery cells 20. This also reduces the effect of the adhesive material on the expansion and deformation of the battery cells 20, thereby increasing the service life of the battery 10. Furthermore, the third barrier 1263 and / or the fourth barrier 1264 can also block solid particles, reducing the probability of solid particles falling into the gaps between two adjacent battery cells 20, thereby reducing the probability of solid particles damaging the battery cells 20 and improving the reliability of the battery 10.

[0177] According to some embodiments of the present application, optionally, the third blocking portion 1263 and / or the fourth blocking portion 1264 abuts against the surface of the battery cell 20 facing the insulating member 12 .

[0178] 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 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.

[0179] 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.

[0180] 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.

[0181] 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 two adjacent battery cells 20 arranged along the second direction Y, thereby blocking 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 toward the surrounding area due to extrusion, the third blocking portion 1263 protruding from the insulating member 12 can restrict the flow of the adhesive material, thereby reducing the possibility of the adhesive material flowing into the gap. In addition, the probability of solid particles falling into the gap between two adjacent battery cells 20 in the second direction Y is further reduced, further reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0182] Similarly, the fourth blocking portion 1264 is provided 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, thereby blocking 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 toward the surrounding area due to extrusion, the fourth blocking portion 1264 protruding from the insulating member 12 can restrict the flow of the adhesive material, thereby reducing the possibility of the adhesive material flowing into the gap. In addition, the probability of solid particles falling into the gap between two adjacent battery cells 20 in the first direction X is further reduced, further reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0183] 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.

[0184] The third blocking portion 1263 and / or the fourth blocking portion 1264 can restrict the flow of adhesive material into the gaps between the battery cells 20 by covering the gaps between the battery cells 20, thereby facilitating close arrangement of the battery cells 20. This can also reduce the effect of the adhesive material on the expansion and deformation of the battery cells 20, thereby increasing the service life of the battery 10. Furthermore, the probability of solid particles falling into the gaps between two adjacent battery cells 20 can be further reduced, further reducing the probability of solid particles damaging the battery cells 20, thereby improving the reliability of the battery 10.

[0185] According to some embodiments of the present application, optionally, at least a portion of the third blocking portion 1263 extends into the 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 the gap between two adjacent battery cells 20 arranged along the first direction X.

[0186] In one possible embodiment, a certain gap can 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 can be filled into the gap; in another possible embodiment, the third blocking portion 1263 can 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.

[0187] 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 and improving the reliability of the battery 10.

[0188] 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,

[0189] The second insulating portion 122 is provided with two separated fourth blocking portions 1264 , whose projections 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. The third direction Z is perpendicular to the first direction X and the second direction Y.

[0190] The third blocking portion 1263 can restrict adhesive material or solid particles from entering the gap between two adjacent battery cells 20 from both sides of the gap, where 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, 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 respectively restrict adhesive material or fixed particles from both sides of the gap, thereby reducing the possibility of adhesive material or solid particles entering the gap.

[0191] Similarly, the fourth barrier 1264 can also restrict adhesive materials 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 can be provided with two fourth barrier portions 1264. Optionally, the two fourth barrier portions 1264 can be provided in parallel on both sides of the gap between two adjacent battery cells 20 arranged along the first direction X, thereby respectively restricting adhesive materials or solid particles from both sides of the gap, reducing the possibility of adhesive materials or solid particles entering the gap.

[0192] 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, a third blocking portion 1263 and a 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.

[0193] The third blocking portion 1263 and / or the fourth blocking portion 1264 can restrict the entry of adhesive material or solid particles into the gaps between the battery cells 20 on both sides, thereby reducing the possibility of adhesive material or solid particles entering the gaps, thereby achieving a close arrangement between the battery cells 20. This can also reduce the impact of adhesive material or solid particles on the expansion and deformation of the battery cells 20, thereby improving the service life of the battery 10. At the same time, providing blocking portions on both sides of the gaps between the battery cells 20 can also reduce the material consumption of the blocking portions, reduce production costs, and reduce the weight of the battery 10.

[0194] According to some embodiments of the present application, at least a portion of the insulating member 12 is optionally made of a transparent material. Optionally, the first insulating portion 121 and / or the second insulating portion 122 are made of a transparent material. Transparent materials may include, for example, PC (polycarbonate), PA66 (polyadiohexylenediamine), PMMA (polymethyl methacrylate), glass fiber, glass, and the like.

[0195] 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%. Light transmittance refers to the percentage of the luminous flux passing through an object to the incident luminous flux, and can generally be measured using a spectrophotometer.

[0196] 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%.

[0197] The first insulating portion 121 can be made of a transparent material, where a transparent material can refer to a material with a light transmittance of 20% to 100%. The transparent material allows light to penetrate the first insulating portion 121 from one side of the first insulating portion 121 to the other side of the first insulating portion 121. In the embodiment of the present application, the transparent material can allow light to penetrate from one side of the first insulating portion 121 to the other side in the third direction Z. Optionally, the second insulating portion 122 can also be made of a transparent material; optionally, both the first insulating portion 121 and the second insulating portion 122 can be made of a transparent material.

[0198] 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 bonding of the insulating part 12 to the battery cell 20 can be observed through the transparent portion. When too much or too little adhesive material is applied, the process can be adjusted in time to improve the pass rate during the production of the battery 10.

[0199] 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 timely adjustments can be made to improve the qualification rate of the battery 10 during the production process.

[0200] 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 .

[0201] The insulating member 12 can be fixedly connected to the battery cell 20 by bonding. Specifically, bonding between the insulating member 12 and / or the battery cell 20 can be achieved by coating an adhesive material on the surface of the insulating member 12 and / or the battery cell 20. The structure formed by the adhesive material is the adhesive layer.

[0202] The adhesive layer securely connects the insulating member 12 to the battery cells 20, preventing the battery cells 20 from separating from the insulating member 12 and causing insulation failure. Furthermore, the adhesive layer secures the relative positions of the multiple battery cells 20 through the insulating member 12, preventing the battery cells 20 from colliding with each other in the battery 10 and causing danger.

[0203] According to some embodiments of the present application, optionally, the material of the bonding layer is a photosensitive adhesive.

[0204] 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 irradiation.

[0205] In some embodiments, at least a portion of the insulating member 12 may be made of a transparent material, such as a material having a light transmittance in the range of 20% to 100%. A photosensitive adhesive may be applied to one surface of the transparent material, for example, the surface facing the battery cell 20. Light directed to the photosensitive adhesive can then pass through the other surface of the transparent material and act on the photosensitive adhesive. The photosensitive adhesive absorbs the energy from the light and solidifies.

[0206] The photosensitive adhesive can accelerate the solidification process by light exposure, thereby reducing the preparation time of the battery 10 and improving the preparation efficiency.

[0207] According to some embodiments of the present application, the battery 10 optionally includes a first housing portion 111 and a second housing portion 112. The first housing portion 111 is a hollow structure with an opening, and multiple battery cells 20 are accommodated in the hollow structure; the second housing portion 112 covers the first housing portion 111 and is fixedly connected to the insulating member 12.

[0208] The first housing 111 accommodates a plurality of battery cells 20. In some embodiments, the insulating member 12 may be provided 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.

[0209] The second housing portion 112 can cover the first housing portion 111 with one end opening. Alternatively, if the first housing portion 111 is open at both ends, the second housing portion 112 can also cover the first housing portion 111 from both ends. When the second housing portion 112 covers the first housing portion 111, it can be fixedly connected to the structure contained within the first housing portion 111. In some embodiments, the second housing portion 112 can be fixedly connected to the insulating member 12 contained in the first housing portion 111 when covering the first housing portion 111. For example, an adhesive can be applied to the surface of the second housing portion 112 facing the hollow structure of the first housing portion 111. This allows the second housing portion 112 to be fixedly connected to the insulating member 12 when covering the first housing portion 111. Alternatively, an adhesive can be applied to the surface of the insulating member 12 facing the second housing portion 112 to achieve a fixed connection between the insulating member 12 and the second housing portion 112.

[0210] 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 reducing the possibility of the battery cell 20 being damaged by collision inside the battery 10, thereby improving the reliability of the battery 10.

[0211] According to some embodiments of the present application, optionally, the second box portion 112 is bonded and fixed to the insulating member 12 .

[0212] The second box body 112 and the insulating member 12 can be fixedly connected by applying an adhesive material. For example, the second box body 112 and the insulating member 12 can be fixedly connected by using 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 means of glue pouring, thereby achieving bonding and fixation between the second box body 112 and the insulating member 12. The foam glue can have a certain thickness when applied to 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.

[0213] An embodiment of the present application further provides an electrical device, comprising the battery 10 described in any of the above embodiments, wherein the battery 10 is used to provide electrical energy to the electrical device.

[0214] An embodiment of the present application provides a battery 10 comprising battery cells 20, an insulating member 12, a busbar 22, and a housing 11. The insulating member 12 is fixedly connected to the plurality of battery cells 20 and housed in the housing 11. 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. 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. 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 can be a one-piece structure, and the sampling assembly 125 can be integrated on the insulating member 12 to collect parameters of the battery cell 20.

[0215] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described 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 encompasses all technical solutions 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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