Batteries and electrical equipment

Abstract

The present application discloses a battery and an electrical device, belonging to the field of battery technology. The battery includes at least one battery module and a supporting component, and the battery cells in the battery module are provided with a pressure relief mechanism. The supporting component supports the battery module, and the interior of the supporting component has a collecting chamber, and the supporting component has a first through hole connected to the collecting chamber, and the first through hole is arranged corresponding to the pressure relief mechanism, and the collecting chamber is used to collect the emissions discharged from the battery cells through the first through hole when the pressure relief mechanism is actuated. Among them, a one-way valve is arranged at the first through hole, and the one-way valve is configured to allow emissions to enter the collecting chamber through the first through hole, and is configured to prevent emissions in the collecting chamber from being discharged through the first through hole. The above-mentioned battery has high reliability.

Description

Technical Field

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

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

[0003] How to improve battery reliability is an urgent problem to be solved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery and an electrical device, which can improve the reliability of the battery.

[0005] In a first aspect, the present application provides a battery, the battery comprising at least one battery module and a support component, wherein the battery cells in the battery module are provided with a pressure relief mechanism. The support component supports the battery module, and the support component has a collection chamber inside, the support component has a first through hole connected to the collection chamber, the first through hole is provided corresponding to the pressure relief mechanism, and the collection chamber is used to collect the emissions discharged from the battery cells through the first through hole when the pressure relief mechanism is actuated. A one-way valve is provided at the first through hole, and the one-way valve is configured to allow emissions to enter the collection chamber through the first through hole, and is configured to prevent emissions in the collection chamber from being discharged through the first through hole.

[0006] In the technical solution of the embodiment of the present application, the setting of the one-way valve can reduce the risk of emissions from thermal runaway of the battery cells in the battery module flowing out of the collecting chamber and causing thermal runaway of the remaining battery cells in the battery module, which is beneficial to reducing the risk of thermal runaway of the battery cells spreading, thereby helping to improve the reliability of the battery.

[0007] In one or more embodiments of the first aspect, the one-way valve includes a valve, which covers the first through hole. The edge of the valve is connected to the support component, and the middle part of the valve forms a constricted portion protruding away from the battery module.

[0008] In the above scheme, the one-way valve is formed by the valve and the constricted portion is provided on the valve, which is beneficial to saving the space occupied by the one-way valve in the battery, improving the energy density of the battery, and also beneficial to reducing the assembly cost of the battery.

[0009] In one or more embodiments of the first aspect, two blocking members are arranged between the supporting component and each battery module, the blocking members extend along the first direction, the two blocking members are arranged at intervals along the second direction, the first through hole is located between the two blocking members, and the thickness direction of the supporting component, the first direction and the second direction are perpendicular to each other.

[0010] In the above scheme, since the first through hole is located between the two blocking members, the two blocking members can reduce the risk of foreign matter blocking part of the first through hole, resulting in the emission of the battery cell in thermal runaway being unable to flow into the collection chamber in time, thereby causing the remaining battery cells to also experience thermal runaway.

[0011] In one or more embodiments of the first aspect, a colloid is disposed on the surface of the support component, and along the second direction, the colloid is located on a side of the blocking member away from the first through hole, and the battery module is connected to the support component through the colloid.

[0012] In the above scheme, the setting of the colloid and the blocking member can not only ensure a higher connection strength between the battery module and the supporting component, but also reduce the risk of the colloid blocking part of the first through hole, resulting in the emission of the battery cell in thermal runaway being unable to flow into the collection chamber in time, thereby causing the remaining battery cells to also experience thermal runaway.

[0013] In one or more embodiments of the first aspect, the supporting component has a first side and a second side opposite to each other along its thickness direction, at least one battery module is disposed on the first side and the second side respectively, and a first through hole is disposed on both the first side and the second side.

[0014] In the above scheme, the emissions from the battery cells in the battery modules on the first side and the second side during thermal runaway can share a collection chamber. On the one hand, this is beneficial to saving space inside the battery and improving the energy density of the battery. On the other hand, since the emissions from the battery cells during thermal runaway will be collected by the collection chamber, the risk of the emissions short-circuiting the battery cells in the battery module can be reduced, and the risk of thermal runaway spreading can be reduced, which is beneficial to improving the reliability of the battery.

[0015] In one or more embodiments of the first aspect, a plurality of battery modules are disposed on the first side, and the battery further includes a first partition beam, which is disposed on the supporting component and located between two adjacent battery modules on the first side; and / or a plurality of battery modules are disposed on the second side, and the battery further includes a second partition beam, which is disposed on the supporting component and located between two adjacent battery modules on the second side.

[0016] In the above scheme, the setting of the first partition beam can, on the one hand, divide the first side of the supporting component into multiple assembly areas, which is conducive to pre-positioning between multiple battery modules, simplifying the assembly process, and improving assembly efficiency; on the other hand, it is conducive to improving the bending strength of the supporting component; the setting of the second partition beam can, on the one hand, divide the second side of the supporting component into multiple assembly areas, which is conducive to pre-positioning between multiple battery modules, simplifying the assembly process, and improving assembly efficiency; on the other hand, it is conducive to improving the bending strength of the supporting component.

[0017] In one or more embodiments of the first aspect, the battery further includes a box, and the battery module and the supporting component are both disposed in the box.

[0018] In the above scheme, the setting of the box can isolate the external environment, reduce the risk of thermal runaway of battery cells in the battery module caused by contact between foreign objects and the battery module, and is conducive to improving the reliability of the battery.

[0019] In one or more embodiments of the first aspect, the supporting component divides the box into a first chamber and a second chamber, the battery module on the first side is accommodated in the first chamber, and the battery module on the second side is accommodated in the second chamber.

[0020] In the above scheme, the supporting component divides the box into a first chamber and a second chamber, and presets assembly space for the battery module on the first side and the battery module on the second side. The supporting component serves as an assembly reference, which is conducive to simplifying the assembly process, realizing the automated assembly of the battery, and improving the assembly efficiency of the battery. At the same time, it is also conducive to simplifying the battery module maintenance process and reducing maintenance costs.

[0021] In one or more embodiments of the first aspect, the box body further includes a first side wall and a second side wall arranged opposite to each other along a second direction, the supporting component connects the first side wall and the second side wall, and the second direction is perpendicular to the thickness direction of the supporting component.

[0022] In the above solution, the first side wall and the second side wall can define the assembly position of the battery module in the second direction, which is helpful to simplify the assembly process and improve the assembly efficiency.

[0023] In one or more embodiments of the first aspect, the first side wall, the second side wall and the supporting component are integrally formed; or, the first side wall and the supporting component are welded, and the second side wall and the supporting component are welded.

[0024] In the above scheme, the integral molding of the first side wall, the second side wall and the supporting component can provide a higher connection strength between the first side wall, the second side wall and the supporting component, which is beneficial to improving the structural stability of the battery; the first side wall and the second side wall are connected to the supporting component by welding, which is beneficial to reducing the manufacturing cost of the battery.

[0025] In one or more embodiments of the first aspect, the box body further includes a first cover body and a second cover body, the first cover body is connected to the first side wall and the second side wall. The second cover body is connected to the first side wall and the second side wall. Along the thickness direction of the support component, the second cover body is arranged opposite to the first cover body, the support component is located between the first cover body and the second cover body, the battery module on the first side is located between the first cover body and the support component, and the battery module on the second side is located between the second cover body and the support component.

[0026] In the above solution, the first cover body and / or the second cover body can be disassembled to realize the assembly and maintenance of the battery module on the first side and the battery module on the second side, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0027] In one or more embodiments of the first aspect, the box body further includes a first end wall and a second end wall, the first end wall and the second end wall are arranged at intervals along the first direction, the support component is located between the first end wall and the second end wall, the two ends of the first end wall are respectively connected to the first side wall and the second side wall, the two ends of the second end wall are respectively connected to the first side wall and the second side wall, the second direction, the first direction and the thickness direction of the support component are perpendicular to each other. The first cover body is also connected to the first end wall and the second end wall, and the second cover body is also connected to the first end wall and the second end wall.

[0028] In the above solution, the box body can be opened or closed only by the first cover body and the second cover body, so the assembly efficiency is high and the maintenance cost is low.

[0029] In one or more embodiments of the first aspect, a thickness direction of the support member is parallel to a gravity direction.

[0030] In one or more embodiments of the first aspect, a first flow channel for accommodating a heat exchange medium is formed inside the support component.

[0031] In the above solution, since the first flow channel does not occupy additional space inside the battery, it is beneficial to improve the energy density of the battery while improving the reliability of the battery.

[0032] In one or more embodiments of the first aspect, the first flow channel and the collecting chamber have a common wall portion.

[0033] In the above scheme, the first flow channel can not only exchange heat for the battery cells under normal operating conditions, but also exchange heat for the emissions when the battery cells are in thermal runaway, thereby reducing the risk of thermal runaway spreading and improving the reliability of the battery.

[0034] In a second aspect, the present application provides an electrical device, which includes a battery in one or more embodiments of the first aspect, and the battery is used to provide electrical energy.

[0035] In the above scheme, since the battery in one or more embodiments of the first aspect has high reliability, the electrical equipment including the battery in one or more embodiments of the first aspect also has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0037] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0038] Figure 2 An exploded view of a battery according to some embodiments of the present application;

[0039] Figure 3 An exploded view of a battery cell according to some embodiments of the present application;

[0040] Figure 4 Axonometric diagrams of battery cells of other embodiments of the present application;

[0041] Figure 5 Exploded diagrams of batteries according to other embodiments of the present application;

[0042] Figure 6 An exploded view of a portion of the structure of a battery according to some other embodiments of the present application;

[0043] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0044] Figure 8 A side view of a battery according to some other embodiments of the present application;

[0045] Fig. 9 for Figure 8 Sectional view at the middle BB;

[0046] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle;

[0047] Fig.11 This is an axonometric view of a one-way valve according to some embodiments of the present application.

[0048] The reference numerals in the specific implementation manner are as follows:

[0049] 1000-vehicle; 200-controller; 300-motor; 100-battery; 11-box; 111-first box body; 112-second box body; 113-first cover; 114-second cover; 115-first end wall; 116-first side wall; 117-second side wall; 118-first partition beam; 119-second partition beam; 120-second end wall; 12-battery cell; 121-housing; 1211 -end cap; 1212-shell; 122-electrode assembly; 123-electrode terminal; 124-adapter; 125-pressure relief mechanism; 13-support component; 131-collection chamber; 134-first through hole; 135-blocking member; 136-one-way valve; 1360-valve; 1361-narrowing portion; 1310-first flow channel; 14-battery module; X-thickness direction of the support component; Y-first direction; Z-second direction. DETAILED DESCRIPTION

[0050] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the present application, battery cells may include but are not limited to lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. The shape of the battery cell may include but is not limited to a cylinder, a flat body, a rectangular parallelepiped or other shapes, etc. The battery cell may include but is not limited to a cylindrical battery cell, a square battery cell, a soft-pack battery cell and a blade battery cell according to the packaging method.

[0057] In some high-power applications such as electric vehicles, the application of batteries includes three levels: battery cells, battery modules and batteries. The battery module is formed by electrically connecting a certain number of battery cells together and placing them in a frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery refers to the final state of the battery system installed in the electric vehicle. The battery mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. The battery generally includes a casing for encapsulating one or more battery cells. The casing can reduce the risk of liquid or other foreign matter affecting the charging or discharging of the battery cells.

[0058] The following will mainly focus on the rectangular battery cell. It should be understood that the embodiments described below are also applicable to cylindrical battery cells, soft-pack battery cells, or blade battery cells in some aspects.

[0059] In a common battery cell structure, the battery cell includes a housing, an electrode assembly and an electrolyte. The housing includes an end cap and a shell, and the end cap closes an opening of the shell to define a receiving space for receiving the electrode assembly.

[0060] The electrode assembly is contained in the containing space, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode collector, the positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer, and the positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode collector, the negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer, and the negative electrode collector not coated with the negative electrode active material layer serves as a negative electrode ear. The material of the negative electrode collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to pass a large current without melting, the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together. In addition, the electrode assembly can be formed in a manner including but not limited to a winding type or a lamination type.

[0061] The tab generally leads the electrical energy of the electrode assembly by being electrically connected to a conductive member. In some cases, the conductive member is a transition piece connecting the tab and the electrode terminal. In other cases, the conductive member is an electrode terminal.

[0062] The electrode terminals generally include a positive electrode terminal and a negative electrode terminal. For a rectangular battery cell, the electrode terminals are generally provided at the end cap portion. In some other cases, the electrode terminals may also be provided at the housing portion. Multiple battery cells are connected in series and / or in parallel via the electrode terminals for various applications.

[0063] For battery cells, there are generally at least three protection measures, which include at least switch elements, appropriate isolation film materials, and pressure relief components.

[0064] A pressure relief component refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature or other conditions of a battery cell reaches a predetermined threshold. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode plate, negative electrode plate, electrolyte and separator in the battery cell. The pressure relief component can take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and can specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature or other conditions of the battery cell reaches a predetermined threshold, the pressure relief component performs an action or a weak structure provided in the pressure relief component is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. Generally, the melting point and / or thickness of the weak structure is lower than other areas of the pressure relief component. For example, the weak structure can be a notched groove set on the surface of the pressure relief component.

[0065] The "actuation" mentioned in this application refers to the action of the pressure relief component or being activated to a certain state, so that the internal pressure and temperature of the battery cell can be released, so that the internal pressure and temperature of the battery cell can be released. The action of the pressure relief component may include but is not limited to: at least a part of the pressure relief component is broken, shattered, torn, melted or opened, etc. The actuation of the pressure relief component can also be referred to as the opening of the pressure relief component. When the pressure relief component is actuated, the high-temperature and high-pressure substances inside the battery cell will be discharged from the actuated part as emissions. In this way, the battery cell can be depressurized and cooled under controllable pressure or temperature, thereby reducing the risk of potential more serious accidents. For example, when short circuits, overcharging, etc. occur, thermal runaway may occur inside the battery cell, resulting in a sudden increase in pressure or temperature. In this case, the internal pressure and temperature can be released outward through the pressure relief component to reduce the probability of explosion and fire in the battery cell.

[0066] The emissions from the battery cells mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of the isolation membrane, high-temperature and high-pressure gases produced by the reaction, flames, etc.

[0067] The development of battery technology must take into account many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

[0068] In a typical battery, a collection chamber is provided for collecting emissions when the battery cell thermally runs away. When the battery cell thermally runs away, some emissions, such as high-temperature gases, will flow out of the collection chamber and flow around the remaining battery cells, causing a high risk of thermal runaway in the remaining battery cells and poor battery reliability.

[0069] In view of this, the present application provides a battery, which includes at least one battery module and a support component, and the battery cells in the battery module are provided with a pressure relief mechanism. The support component supports the battery module, and the support component has a collection chamber inside, and the support component has a first through hole connected to the collection chamber, and the first through hole is arranged corresponding to the pressure relief mechanism, and the collection chamber is used to collect the emissions discharged from the battery cells through the first through hole when the pressure relief mechanism is actuated. Wherein, a one-way valve is arranged at the first through hole, and the one-way valve is configured to allow emissions to enter the collection chamber through the first through hole, and is configured to prevent emissions in the collection chamber from being discharged through the first through hole. The provision of the one-way valve can reduce the risk of emissions from thermal runaway of the battery cells in the battery module flowing out of the collection chamber and inducing thermal runaway of the remaining battery cells in the battery module, which is beneficial to reducing the risk of thermal runaway of the battery cells spreading, thereby facilitating improving the reliability of the battery.

[0070] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical equipment using batteries.

[0071] Electrical equipment includes, but is not limited to: battery vehicles, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.

[0072] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0073] For example, Figure 1 The schematic diagram of the structure of the vehicle 1000 of some embodiments of the present application, the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The motor 300, the controller 200 and the battery 100 can be arranged inside the vehicle 1000, and the controller 200 is used to control the battery 100 to power the motor 300. For example, the battery 100 can be arranged at the bottom or the front or the rear of the vehicle 1000. The battery 100 can be used for powering the vehicle 1000, for example, the battery 100 can be used as the operating power supply of the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power demand of the vehicle 1000 during startup, navigation and operation. In another embodiment of the present application, the battery 100 can not only be used as the operating power supply of the vehicle 1000, but also as the driving power supply of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0074] In order to meet different power requirements, the battery 100 may include a plurality of battery cells 12, wherein the plurality of battery cells 12 may be connected in series, in parallel, or in a hybrid connection, wherein the hybrid connection refers to a mixture of series and parallel connections. The battery 100 may also be referred to as a battery pack. Optionally, a plurality of battery cells 12 may first be connected in series, in parallel, or in a hybrid connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in a hybrid connection to form the battery 100. In other words, a plurality of battery cells 12 may directly form the battery 100, or they may first form a battery module, and then the battery module may form the battery 100.

[0075] For example, see Figure 2 , Figure 2 1 is an exploded view of a battery 100 in some embodiments of the present application. The battery 100 may include a plurality of battery cells 12. The battery 100 may also include a housing 11. The interior of the housing 11 is a hollow structure. The plurality of battery cells 12 are accommodated in the housing 11. Figure 2 As shown, they are respectively referred to as the first box body 111 and the second box body 112, and the first box body 111 and the second box body 112 are buckled together. The shapes of the first box body 111 and the second box body 112 can be determined according to the shapes of the combination of multiple battery cells 12, and the first box body 111 and the second box body 112 can both have an opening surface. For example, the first box body 111 and the second box body 112 can both be hollow cuboids and each has only one face as an opening face, the opening face of the first box body 111 and the opening face of the second box body 112 are arranged opposite to each other, and the first box body 111 and the second box body 112 are buckled together to form a box body 11 with a closed chamber. After the multiple battery cells 12 are connected in parallel, in series, or in mixed series, they are placed in the box body 11 formed by the buckling of the first box body 111 and the second box body 112.

[0076] Optionally, the battery 100 may also include other structures, which are not described one by one here. For example, the battery 100 may also include a busbar component, which is used to realize electrical connection between multiple battery cells 12, such as parallel connection, series connection, or mixed connection. Specifically, the busbar component can realize electrical connection between battery cells 12 by connecting the electrode terminals 123 of the battery cells 12. Furthermore, the busbar component can be fixed to the electrode terminals 123 of the battery cells 12 by welding. The electrical energy of multiple battery cells 12 can be further led out through the box body 11 through a conductive mechanism.

[0077] According to different power requirements, the number of battery cells 12 can be set to any value. Multiple battery cells 12 can be connected in series, parallel or hybrid to achieve a larger capacity or power. Since the number of battery cells 12 included in each battery 100 may be large, for ease of installation, the battery cells 12 can be grouped, and each group of battery cells 12 constitutes a battery module. The number of battery cells 12 included in the battery module is not limited and can be set according to demand. The battery 100 may include multiple battery modules, which can be connected in series, parallel or hybrid.

[0078] Please refer to Figure 3 As shown, Figure 3 This is an exploded view of a battery cell 12 of some embodiments of the present application, and the battery cell 12 includes one or more electrode assemblies 122 and a shell 121. The shell 121 may include a shell 1212, and multiple walls of the shell 1212, that is, multiple walls of the shell 121, form a cavity, and this cavity can be used to accommodate the electrode assembly 122. The shell 1212 is determined according to the shape of the one or more electrode assemblies 122 after being combined. For example, the shell 1212 can be a hollow cuboid or a cube or a regular polyhedron, and one of the faces of the shell 1212 has an opening so that one or more electrode assemblies 122 can be placed in the shell 1212. The shell 1212 is filled with an electrolyte, such as an electrolyte.

[0079] The battery cell 12 may also include two electrode terminals 123, which may be disposed on the end cap 1211. The end cap 1211 is generally in the shape of a flat plate, and the two electrode terminals 123 are fixed on the flat surface of the end cap 1211, and the two electrode terminals 123 are respectively a positive electrode terminal 123 and a negative electrode terminal 123. Each electrode terminal 123 is provided with a corresponding adapter 124, which is located between the end cap 1211 and the electrode assembly 122, and is used to electrically connect the electrode assembly 122 and the electrode terminal 123. In the battery cell 12, according to actual use requirements, the electrode assembly 122 may be provided as a single one, or as a plurality of ones, and a plurality of independent electrode assemblies 122 are provided in the battery cell 12.

[0080] According to some embodiments of the present application, referring to Figure 5-Figure 7The battery 100 includes at least one battery module 14 and a support component 13. The battery cell 12 in the battery module 14 is provided with a pressure relief mechanism 125. The support component 13 supports the battery module 14, and the support component 13 has a collecting chamber 131 inside. The support component 13 has a first through hole 134 connected to the collecting chamber 131. The first through hole 134 is arranged corresponding to the pressure relief mechanism 125. The collecting chamber 131 is used to collect the discharge discharged from the battery cell 12 through the first through hole 134 when the pressure relief mechanism 125 is actuated. A one-way valve 136 is arranged at the first through hole 134. The one-way valve 136 is configured to allow the discharge to enter the collecting chamber 131 through the first through hole 134, and is configured to prevent the discharge in the collecting chamber 131 from being discharged through the first through hole 134.

[0081] The battery module 14 may include a plurality of battery cells 12, which are stacked in sequence along a direction and may also be referred to as a first battery group. Figure 5 A plurality of battery cells 12 are stacked along a first direction Y to form a battery module 14. Figure 5 The battery 100 shown includes eight battery modules 14 .

[0082] In some embodiments, the battery cell 12 is flat, and the first direction Y is the thickness direction of the wall portion of the outer shell 121 of the battery cell 12 with the largest area.

[0083] In some embodiments, a plurality of battery modules 14 are provided, and all battery modules 14 can share one battery monitoring and management device.

[0084] In some embodiments, a plurality of battery modules 14 are provided, and each battery module 14 is equipped with an independent battery monitoring and management device.

[0085] The supporting component 13 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0086] The pressure relief mechanism 125 may be any possible pressure relief mechanism 125, which is not limited in the embodiments of the present application. For example, the pressure relief mechanism 125 may be a temperature-sensitive pressure relief mechanism, which is configured to melt when the internal temperature of the battery cell 12 provided with the pressure relief mechanism 125 reaches a threshold value; for example, the pressure relief mechanism 125 may be a pressure-sensitive pressure relief mechanism, which is configured to rupture when the internal air pressure of the battery cell 12 provided with the pressure relief mechanism 125 reaches a threshold value.

[0087] In some embodiments, the electrode terminal 123 of the battery cell 12 of the battery module 14 is arranged on the side of the battery cell 12 away from the support component 13, that is, the electrode terminal 123 of the battery cell 12 and the pressure relief mechanism 125 are located on different sides of the battery cell 12. In other embodiments, the battery 100 may also include a busbar, which is located on the side of the battery module 14 away from the support component 13. The busbar is used to electrically connect the electrode terminal 123 of the battery module 14. Such a setting, on the one hand, does not require the busbar to provide a evacuation hole for evading the pressure relief mechanism 125, and on the premise of satisfying the electrical connection of the battery cell 12, it is not necessary to increase the size of the busbar, which is conducive to improving the energy density of the battery 100 and reducing the manufacturing cost of the battery 100. At the same time, the busbar will not be damaged when the pressure relief mechanism 125 is actuated, and the collection chamber 131 collects the emissions in a centralized manner, which is conducive to reducing the risk of more serious accidents caused by the spread of thermal runaway.

[0088] The support component 13 supports the battery module 14, which can be referred to as the battery module 14 being fixedly mounted on the support component 13, or the weight of the battery module 14 being borne by the support component 13. For example, the battery cells 12 in the battery module 14 can be bonded to the support component 13 by colloid, and such a setting can be referred to as the battery module 14 being borne by the support component 13. For another example, the battery cells 12 in the battery module 14 can be mounted to the support component 13 by fasteners and colloid, and such a setting can be referred to as the battery module 14 being borne by the support component 13.

[0089] In some embodiments, the support component 13 may be formed by an extrusion process, and the support component 13 having at least one cavity is formed during the processing of the support component 13, one of which may be used as the collection cavity 131. In other embodiments, the support component 13 may also include two plates, one of which is punched to form a groove, and the other plate closes the notch of the groove to form the collection cavity 131.

[0090] The collecting chamber 131 is used to collect the emissions of the battery cells 12 of the battery module 14 when the pressure relief mechanism 125 is actuated, which means that at least part of the emissions of the battery cells 12 of the battery module 14 will be temporarily stored in the collecting chamber 131 .

[0091] The first through hole 134 may correspond to multiple pressure relief mechanisms 125 of the battery module 14, or may correspond to only one of the pressure relief mechanisms 125 of the battery module 14. For example, in some embodiments, a plurality of first through holes 134 are provided, the battery module 14 includes a plurality of battery cells 12, and the first through holes 134 correspond one-to-one to the pressure relief mechanisms 125 of the plurality of battery cells 12 in the battery module 14.

[0092] In some embodiments, a plurality of first through holes 134 are provided, and the plurality of first through holes 134 are arranged at intervals along the stacking direction of the battery cells 12 in the battery module 14. For example, in some embodiments, the plurality of first through holes 134 are arranged at intervals along the first direction Y.

[0093] In some embodiments, the first through hole 134 may be disposed on a wall portion of the collecting chamber 131 , that is, the first through hole 134 may be disposed on an outer surface of the supporting component 13 .

[0094] In some embodiments, along the thickness direction X of the support component, at least a portion of the projection of the pressure relief mechanism 125 is located in the first through hole 134. For example, in some embodiments, at least a portion of the pressure relief mechanism 125 may protrude from the outer surface of the wall of the housing 121 of the battery cell 12 and extend into the first through hole 134.

[0095] The one-way valve 136 may be disposed at the first through hole 134 by a fastener, or may be bonded to the first through hole 134 .

[0096] The one-way valve 136 is disposed at the first through hole 134 , which means that the discharge will not flow from the first through hole 134 to the surrounding of the battery module 14 , thereby improving the reliability of the battery 100 .

[0097] In the technical solution of the embodiment of the present application, the setting of the one-way valve 136 can reduce the risk of emissions from thermal runaway of the battery cells 12 in the battery module 14 flowing out of the collecting chamber 131 and causing thermal runaway of the remaining battery cells 12 in the battery module 14, which is beneficial to reducing the risk of thermal runaway of the battery cells 12 spreading, thereby helping to improve the reliability of the battery 100.

[0098] According to some embodiments of the present application, referring to Figure 5-Figure 7 as well as Fig.10 and Fig.11 The one-way valve 136 includes a valve 1360 , which covers the first through hole 134 . The edge of the valve 1360 is connected to the support component 13 , and the middle of the valve 1360 forms a constricted portion 1361 that protrudes away from the battery module 14 .

[0099] The valve 1360 may be formed by an injection molding process.

[0100] The weight of the valve 1360 is lower than that of the mechanical one-way valve, which is beneficial to improving the mass energy density of the battery 100.

[0101] In some embodiments, please refer to Fig.10 and Fig.11 The valve 1360 has two openings, the larger opening is bonded to the first through hole 134 , and the smaller opening is located in the collecting chamber 131 .

[0102] In the above solution, a one-way valve is formed by the valve 1360 and a constricted portion 1361 is provided on the valve 1360 , which is beneficial to saving the space occupied by the one-way valve in the battery 100 , improving the energy density of the battery 100 , and also beneficial to reducing the assembly cost of the battery 100 .

[0103] According to some embodiments of this application, please refer to Figure 5 and Figure 6 Two blocking members 135 are arranged between the supporting component 13 and each battery module 14, the blocking member 135 extends along the first direction Y, the two blocking members 135 are arranged at intervals along the second direction Z, the first through hole 134 is located between the two blocking members 135, and the thickness direction of the supporting component 13, the first direction Y and the second direction Z are perpendicular to each other.

[0104] The material of the blocking member 135 may include rubber, plastic, metal, etc.

[0105] In some embodiments, the blocking member 135 can be disposed on the supporting component 13 by welding or bonding, or can be integrally formed with the supporting component 13. In some embodiments, the blocking member 135 can also be connected to the wall of the box body 11.

[0106] In the above scheme, since the first through hole 134 is located between the two blocking members 135, the two blocking members 135 can reduce the risk of foreign objects blocking part of the first through hole 134, resulting in the emission of the battery cell 12 in thermal runaway being unable to flow into the collection chamber 131 in time, thereby causing the remaining battery cells 12 to also experience thermal runaway.

[0107] According to some embodiments of this application, please refer to Figure 5-Figure 7 A colloid is disposed on the surface of the supporting component 13 . Along the second direction Z, the colloid is located on a side of the blocking member 135 away from the first through hole 134 . The battery module 14 is connected to the supporting component 13 through the colloid.

[0108] During the process of disposing the colloid on the surface of the supporting component 13 , due to the setting of the blocking member 135 , it is difficult for the colloid to flow to the first through hole 134 , that is, it is difficult for the colloid to partially block the first through hole 134 .

[0109] In the above scheme, the setting of the colloid and the blocking member 135 can not only ensure a higher connection strength between the battery module 14 and the supporting component 13, but also reduce the risk of the colloid blocking part of the first through hole 134, resulting in the emission of the battery cell 12 in thermal runaway being unable to flow into the collection chamber 131 in time, thereby causing the remaining battery cells 12 to also experience thermal runaway.

[0110] According to some embodiments of this application, please refer to Figure 5-Figure 7The support component 13 has a first side and a second side opposite to each other along its thickness direction, at least one battery module 14 is disposed on the first side and the second side respectively, and a first through hole 134 is disposed on both the first side and the second side.

[0111] The first side and the second side are both provided with the first through hole 134 , which means that the battery modules 14 on the first side and the second side can share a collecting cavity 131 .

[0112] In the above scheme, the emissions from the battery cells 12 in the battery modules 14 on the first side and the second side during thermal runaway can share a collecting chamber 131. On the one hand, this is beneficial to saving space inside the battery 100 and to improving the energy density of the battery 100. On the other hand, since the emissions from the battery cells 12 during thermal runaway will be collected by the collecting chamber 131, the risk of the emissions short-circuiting the battery cells 12 in the battery module 14 can be reduced, and the risk of thermal runaway spreading can be reduced, thereby improving the reliability of the battery 100.

[0113] According to some embodiments of this application, please refer to Figure 5 , a plurality of battery modules 14 are arranged on the first side, and the battery 100 further includes a first partition beam 118, which is arranged on the support component 13 and located between two adjacent battery modules 14 on the first side; and / or, a plurality of battery modules 14 are arranged on the second side, and the battery 100 further includes a second partition beam 119, which is arranged on the support component 13 and located between two adjacent battery modules 14 on the second side.

[0114] The first partition beam 118 and / or the second partition beam 119 may be connected to the support component 13 by welding, bonding, fastener connection, etc. They may also be integrally formed with the support component 13 .

[0115] The first partition beam 118 and / or the second partition beam 119 may include at least one first segment and at least one second segment, and the extension direction of the first segment intersects with the extension direction of the second segment. For example, please refer to Figure 5 The first partition beam 118 includes a first section extending along the first direction Y and a second section extending along the first direction Y. The two ends of the first section are respectively connected to the first end wall 115 and the second end wall 120, and the two ends of the second section are respectively connected to the first side wall 116 and the second side wall 117. The first partition beam 118 is cross-shaped, dividing the first side of the support component 13 into four installation areas, each of which can be installed with a battery module 14. The second partition beam 119 is cross-shaped, dividing the second side of the support component 13 into four installation areas, each of which can be installed with a battery module 14.

[0116] In the above scheme, the setting of the first partition beam 118 can, on the one hand, divide the first side of the support component 13 into multiple assembly areas, which is conducive to pre-positioning between multiple battery modules 14, simplifying the assembly process, and improving assembly efficiency. On the other hand, it is conducive to improving the bending strength of the support component 13; the setting of the second partition beam 119 can, on the one hand, divide the second side of the support component 13 into multiple assembly areas, which is conducive to pre-positioning between multiple battery modules, simplifying the assembly process, and improving assembly efficiency. On the other hand, it is conducive to improving the bending strength of the support component 13.

[0117] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The battery 100 further includes a box body 11 , in which the battery module 14 and the supporting component 13 are both disposed.

[0118] The material of the box body 11 may include copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0119] In the above solution, the box 11 can be provided to isolate the external environment, reduce the risk of foreign matter contacting the battery module 14 and causing thermal runaway of the battery cells 12 in the battery module 14 , and is beneficial to improving the reliability of the battery 100 .

[0120] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The supporting member 13 divides the box body 11 into a first chamber and a second chamber. The battery module 14 on the first side is accommodated in the first chamber, and the battery module 14 on the second side is accommodated in the second chamber.

[0121] In some embodiments, the first chamber is sealed and isolated from the second chamber.

[0122] In the above scheme, the support component 13 separates the box body 11 into a first chamber and a second chamber, and presets assembly space for the battery module 14 on the first side and the battery module 14 on the second side. The support component 13 serves as an assembly reference, which is conducive to simplifying the assembly process, realizing the automated assembly of the battery 100, and improving the assembly efficiency of the battery 100. At the same time, it is also conducive to simplifying the maintenance process of the battery module 14 and reducing maintenance costs.

[0123] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The box body 11 further includes a first side wall 116 and a second side wall 117 which are arranged opposite to each other along a second direction Z. The support component 13 connects the first side wall 116 and the second side wall 117. The second direction Z is perpendicular to the thickness direction X of the support component.

[0124] The first side wall 116 and the second side wall 117 may serve as walls of the box body 11 , or may be located inside the box body 11 .

[0125] In the above solution, the first side wall 116 and the second side wall 117 can define the assembly position of the battery module 14 in the second direction Z, which is helpful to simplify the assembly process and improve the assembly efficiency.

[0126] According to some embodiments of this application, please refer to Figure 5 and Figure 6 , the first side wall 116 , the second side wall 117 and the support component 13 are integrally formed; or, the first side wall 116 and the support component 13 are welded, and the second side wall 117 and the support component 13 are welded.

[0127] In some embodiments, the first side wall 116, the second side wall 117 and the support member 13 may be integrally formed by an extrusion process. In some embodiments, the first side wall 116 and the support member 13 may be connected by friction stir welding, and the second side wall 117 and the support member 13 may be connected by friction stir welding.

[0128] In the above scheme, the first side wall 116, the second side wall 117 and the support component 13 are integrally formed, so that the first side wall 116, the second side wall 117 and the support component 13 have a higher connection strength, which is beneficial to improving the structural stability of the battery 100; the first side wall 116 and the second side wall 117 are connected to the support component 13 by welding, which is beneficial to reducing the manufacturing cost of the battery 100.

[0129] According to some embodiments of this application, please refer to Figure 5 , Figure 6 and Fig. 9 The box body 11 further includes a first cover body 113 and a second cover body 114. The first cover body 113 is connected to the first side wall 116 and the second side wall 117. The second cover body 114 is connected to the first side wall 116 and the second side wall 117. Along the thickness direction X of the supporting component, the second cover body 114 is arranged opposite to the first cover body 113, the supporting component 13 is located between the first cover body 113 and the second cover body 114, the battery module 14 on the first side is located between the first cover body 113 and the supporting component 13, and the battery module 14 on the second side is located between the second cover body 114 and the supporting component 13.

[0130] The first cover body 113 and the second cover body 114 may be connected to the first side wall 116 and the second side wall 117 by welding, bonding, fastener connection, etc.

[0131] The first cover 113 and / or the second cover 114 can be detachably mounted to realize the assembly and maintenance of the battery module 14 on the first side and the battery module 14 on the second side.

[0132] In the above solution, the first cover 113 and / or the second cover 114 can be disassembled to realize the assembly and maintenance of the battery module 14 on the first side and the battery module 14 on the second side, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0133] According to some embodiments of this application, please refer to Figure 5 , Figure 6 and Fig. 9 The box body 11 further includes a first end wall 115 and a second end wall 120, which are arranged at intervals along the first direction Y, and the support component 13 is located between the first end wall 115 and the second end wall 120. The two ends of the first end wall 115 are respectively connected to the first side wall 116 and the second side wall 117, and the two ends of the second end wall 120 are respectively connected to the first side wall 116 and the second side wall 117, and the second direction Z, the first direction Y and the thickness direction X of the support component are perpendicular to each other. The first cover body 113 is also connected to the first end wall 115 and the second end wall 120, and the second cover body 114 is also connected to the first end wall 115 and the second end wall 120.

[0134] The first cover body 113 and the second cover body 114 may be connected to the first end wall 115 and the second end wall 120 by welding, bonding, fastener connection, or the like.

[0135] In some embodiments, outer surfaces of the first end wall 115 , the second end wall 120 , the first side wall 116 , and the second side wall 117 are the outer surfaces of the box body 11 .

[0136] In the above solution, the box body 11 can be opened or closed only by the first cover body 113 and the second cover body 114 , which has high assembly efficiency and low maintenance cost.

[0137] According to some embodiments of the present application, a thickness direction X of the support component is parallel to the gravity direction.

[0138] According to some embodiments of this application, please refer to Figure 5-Figure 7 A first flow channel 1310 for accommodating a heat exchange medium is formed inside the support component 13 .

[0139] A first flow channel 1310 for accommodating a heat exchange medium is formed inside the support component 13, which means that the first flow channel 1310 does not occupy additional space inside the battery 100. Moreover, the first flow channel 1310 can simultaneously exchange heat for multiple battery modules 14.

[0140] The heat exchange medium is generally a fluid for regulating the temperature of the battery cells 12. The fluid here can be a liquid or a gas. Regulating the temperature means heating or dissipating heat to multiple battery cells 12. In the case of dissipating heat or cooling the battery cells 12, the heat exchange medium can also be called a cooling medium or a cooling fluid, more specifically, a coolant or a cooling gas. In addition, the heat exchange medium can also heat the battery cells 12. Optionally, the fluid can be circulated to achieve a better temperature regulation effect. Optionally, the fluid can be water, a mixture of water and ethylene glycol, or air, etc.

[0141] The first flow channel 1310 can be formed during the extrusion molding process of the support component 13, or can be formed by machining after the support component 13 is processed.

[0142] In the above solution, since the first flow channel 1310 does not occupy additional space inside the battery 100 , it is beneficial to improve the energy density of the battery 100 while improving the reliability of the battery 100 .

[0143] According to some embodiments of the present application, the first flow channel 1310 and the collecting chamber 131 have a common wall portion.

[0144] The first flow channel 1310 and the collecting chamber 131 have a common wall portion, which means that after the exhaust flows into the collecting chamber 131 , the heat exchange medium can exchange heat with the exhaust through the common wall portion of the two.

[0145] In the above solution, the first flow channel 1310 can not only exchange heat for the battery cell 12 under normal working conditions, but also exchange heat for emissions when the battery cell 12 is in thermal runaway, thereby reducing the risk of thermal runaway spreading and improving the reliability of the battery 100 .

[0146] According to some embodiments of this application, please refer to Figure 1 The present application provides an electrical device, which includes the battery 100 in one or more of the above embodiments, and the battery 100 is used to provide electrical energy.

[0147] In the above solution, since the battery 100 in one or more of the above embodiments has high reliability, the electrical equipment including the battery 100 in one or more of the above embodiments also has high reliability.

[0148] According to some embodiments of this application, please refer to Figure 4-Figure 11The present application provides a battery 100, which includes a battery module 14, a support component 13 and a box 11, wherein the battery module 14 and the support component 13 are both arranged in the box 11. The support component 13 separates the box 11 into a first cavity and a second cavity, and the support component 13 has a first side and a second side opposite to each other along its thickness direction, a plurality of battery modules 14 are arranged on the first side, and a plurality of battery modules 14 are arranged on the second side, and the battery modules 14 on the first side are arranged in the first cavity, and the battery modules 14 on the second side are arranged in the second cavity.

[0149] The box body 11 further includes a first side wall 116 and a second side wall 117, a first end wall 115 and a second end wall 120, and a first cover 113 and a second cover 114, which are arranged opposite to each other along the second direction Z. The support component 13 connects the first side wall 116 and the second side wall 117, and the first side wall 116, the second side wall 117 and the support component 13 are integrally formed. The first cover 113 is connected to the first side wall 116 and the second side wall 117. The second cover 114 is connected to the first side wall 116 and the second side wall 117. Along the thickness direction X of the support component, the second cover 114 is arranged opposite to the first cover 113, the support component 13 is located between the first cover 113 and the second cover 114, the battery module 14 on the first side is located between the first cover 113 and the support component 13, and the battery module 14 on the second side is located between the second cover 114 and the support component 13.

[0150] The first end wall 115 and the second end wall 120 are arranged at intervals along the first direction Y, the support component 13 is located between the first end wall 115 and the second end wall 120, the two ends of the first end wall 115 are respectively connected to the first side wall 116 and the second side wall 117, the two ends of the second end wall 120 are respectively connected to the first side wall 116 and the second side wall 117, the second direction Z, the first direction Y and the thickness direction X of the support component are perpendicular to each other. The first cover body 113 is also connected to the first end wall 115 and the second end wall 120, and the second cover body 114 is also connected to the first end wall 115 and the second end wall 120.

[0151] The plurality of battery modules 14 are connected to the support member 13, and the support member 13 is used to carry the battery modules 14. The support member 13 has a collecting chamber 131 inside, and the collecting chamber 131 is used to collect the discharge of the battery cells 12 when the pressure relief mechanism 125 is actuated. A first flow channel 1310 for accommodating a heat exchange medium is formed inside the support member 13. The first flow channel 1310 and the collecting chamber 131 have a common wall portion.

[0152] The support component 13 has a plurality of first through holes 134 connected to the collection chamber 131. The first through holes 134 are arranged on the first side and the second side of the support component 13. The first through holes 134 are connected to the collection chamber 131. The pressure relief mechanism 125 of the battery module 14 is arranged corresponding to the first through holes 134. Two blocking members 135 are arranged on the first side of the support component 13, and two blocking members 135 are arranged on the second side. The two blocking members 135 are arranged at intervals along the second direction Z. The plurality of first through holes 134 on the first side are located between the two blocking members 135, and the plurality of first through holes 134 on the second side are located between the two blocking members 135. The blocking members 135 extend along the first direction Y. The first direction Y, the thickness direction X of the support component, and the second direction Z are perpendicular to each other. A colloid is arranged on the surface of the support component 13. Along the second direction Z, the colloid is located on the side of the blocking member 135 away from the plurality of first through holes 134. The battery module 14 is connected to the support component 13 through the colloid. The battery 100 further includes a one-way valve 136 , which is disposed at the first through hole 134 .

[0153] The support component 13 can not only serve as a substrate for supporting the battery module 14, but also serve as a component for thermal management of the battery module 14, and can also include a collection chamber 131 for emissions when the battery cell 12 is in thermal runaway, which can significantly improve the energy density and reliability of the battery 100.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: At least one battery module, wherein the battery cells in the battery module are provided with a pressure relief mechanism; a support component, supporting the battery module, wherein the support component has a collecting chamber inside, wherein the support component has a first through hole communicating with the collecting chamber, wherein the first through hole is arranged corresponding to the pressure relief mechanism, and wherein the collecting chamber is used to collect the discharge discharged from the battery cell through the first through hole when the pressure relief mechanism is actuated; Wherein, a one-way valve is provided at the first through hole, and the one-way valve is configured to allow the emissions to enter the collecting chamber through the first through hole, and is configured to prevent the emissions in the collecting chamber from being discharged through the first through hole.

2. The battery according to claim 1, characterized in that The one-way valve includes a valve, the valve covers the first through hole, the edge of the valve is connected to the supporting component, and the middle part of the valve forms a constricted portion protruding away from the battery module.

3. The battery according to claim 1, characterized in that Two blocking members are arranged between the support component and each of the battery modules, the blocking members extend along a first direction, the two blocking members are spaced apart along a second direction, the first through hole is located between the two blocking members, and the thickness direction of the support component, the first direction and the second direction are perpendicular to each other.

4. The battery according to claim 3, characterized in that A colloid is disposed on the surface of the supporting component. Along the second direction, the colloid is located on a side of the blocking member away from the first through hole. The battery module is connected to the supporting component via the colloid.

5. The battery according to any one of claims 1 to 4, characterized in that The supporting component has a first side and a second side opposite to each other along a thickness direction thereof, at least one battery module is disposed on the first side and the second side respectively, and the first through hole is disposed on the first side and the second side respectively.

6. The battery according to claim 5, characterized in that A plurality of battery modules are arranged on the first side, and the battery further comprises a first partition beam, wherein the first partition beam is arranged on the supporting component and is located between two adjacent battery modules on the first side; And / or, a plurality of the battery modules are arranged on the second side, and the battery further comprises a second partition beam, and the second partition beam is arranged on the supporting component and located between two adjacent battery modules on the second side.

7. The battery according to claim 5, characterized in that The battery also includes: The battery module and the supporting component are both arranged in the box.

8. The battery according to claim 7, characterized in that The supporting member divides the box into a first chamber and a second chamber. The battery module on the first side is accommodated in the first chamber, and the battery module on the second side is accommodated in the second chamber.

9. The battery according to claim 7, characterized in that The box body further includes a first side wall and a second side wall which are arranged opposite to each other along a second direction, the support component connects the first side wall and the second side wall, and the second direction is perpendicular to the thickness direction of the support component.

10. The battery according to claim 9, characterized in that The first side wall, the second side wall and the supporting component are integrally formed; Alternatively, the first side wall and the supporting component are welded, and the second side wall and the supporting component are welded.

11. The battery according to claim 9, characterized in that The box also includes: A first cover body connected to the first side wall and the second side wall; a second cover body connected to the first side wall and the second side wall; Along the thickness direction of the supporting component, the second cover body is arranged opposite to the first cover body, the supporting component is located between the first cover body and the second cover body, the battery module on the first side is located between the first cover body and the supporting component, and the battery module on the second side is located between the second cover body and the supporting component.

12. The battery according to claim 11, characterized in that The box also includes: A first end wall and a second end wall, the first end wall and the second end wall are arranged at intervals along a first direction, the support component is located between the first end wall and the second end wall, two ends of the first end wall are respectively connected to the first side wall and the second side wall, two ends of the second end wall are respectively connected to the first side wall and the second side wall, and the second direction, the first direction and the thickness direction of the support component are perpendicular to each other; The first cover body is also connected to the first end wall and the second end wall, and the second cover body is also connected to the first end wall and the second end wall.

13. The battery according to claim 5, characterized in that The thickness direction of the supporting component is parallel to the gravity direction.

14. The battery according to claim 1, characterized in that A first flow channel for accommodating a heat exchange medium is formed inside the supporting component.

15. The battery according to claim 14, characterized in that The first flow channel and the collecting chamber have a common wall portion.

16. An electrical equipment, characterized in that: The battery comprising any one of claims 1 to 15 is used for providing electrical energy.

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