Batteries and electric equipment

Abstract

A battery (100) and an electric device, wherein the battery (100) includes a battery box (10) and a battery core group (20), the battery box (10) includes a housing lid (11) and a housing (12), the housing lid (11) is placed over the housing (12) and surrounds the housing (12) to form a chamber (13), the housing lid (11) is used to connect an external frame, the battery core group (20) is housed in the chamber (13) and the battery core group (20) is connected to the housing lid (11).

Description

Technical Field

[0006]

[0001] This application belongs to the field of battery technology, and more specifically relates to batteries and electric devices.

Background Art

[0002] With the rapid development of new energy technologies, electric vehicles are increasingly popular among people. An electric vehicle is a vehicle in which all or some of the operating conditions are powered by electrical energy provided by a battery.

[0003] Currently, due to the relatively large weight of the battery and the relatively small mass energy density, the endurance performance of electric vehicles is reduced, which is disadvantageous for the popularization and application of electric vehicles. As can be seen therefrom, how to reduce the weight of the battery is a technical problem that urgently needs to be solved.

Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a battery and an electric device for solving the technical problem that the weight of the battery is relatively large in the related art.

[0005] To achieve the above object, the technical solution adopted in the embodiments of this application is as follows. A battery is provided, which includes a battery box and a battery core group. The battery box includes a housing cover and a housing. The housing cover is covered on the housing and encloses with the housing to form a chamber. The housing cover is used to connect an external frame body. The battery core group is accommodated in the chamber and is connected to the housing cover.

[0006] The battery according to the embodiment of this application has at least the following beneficial effects. In the battery according to the embodiment of this application, the housing lid of the battery box can be connected to an outer frame, and the battery core group of the battery is connected to the housing lid. Thus, the load of at least a portion of the battery core group can be directly transmitted to the outer frame via the housing lid. In other words, the load on the housing of the battery box can be reduced by receiving the load of at least a portion of the battery core group via the outer frame. This reduces the strength requirements on the housing, reduces the size of the housing, for example, by reducing the height of the housing, thereby effectively reducing the weight of the battery, improving the mass energy density of the battery, and further effectively improving the range performance of the electric equipment.

[0007] In some embodiments of this application, the housing lid has a first cavity, the housing has a second cavity, the first cavity and the second cavity communicate with each other to form a chamber, and at least a portion of the battery core group is housed in the first cavity.

[0008] By adopting the above-described technology, at least a portion of the battery core group can be housed within the first cavity, effectively reducing the depth requirement for the second cavity. By thus reducing the height of the housing and thus the depth of the second cavity, the weight of the battery can be further reduced, the mass energy density of the battery can be further improved, and the driving range of the electric vehicle can be further enhanced.

[0009] In some embodiments of this application, the maximum depth of the second cavity is less than the maximum depth of the first cavity, and / or the minimum depth of the second cavity is less than the maximum depth of the first cavity.

[0010] By adopting the above technical proposal, a larger volume of the battery core group can be housed in the first cavity, further reducing the depth requirement for the second cavity. This further reduces the height of the housing, thereby reducing the weight of the housing and the total weight of the battery, further improving the mass energy density of the battery, and further enhancing the driving range of the electric vehicle.

[0011] In some embodiments of this application, the enclosure includes a first support beam, the first support beam includes a support beam body and an energy-absorbing beam body, the energy-absorbing beam body being connected to the side of the support beam body facing away from the chamber.

[0012] By adopting the above-described technology, when the outside of the battery is subjected to an external force, the energy-absorbing beam body effectively absorbs the impact energy, thereby effectively improving the situation in which the impact energy is transmitted to the battery core group through the housing, and effectively reducing the risk of damage to the battery core group.

[0013] In some embodiments of this application, the energy-absorbing beam body includes a main beam body, the main beam body is connected to the side of the support beam body opposite to the chamber, and has a first energy-absorbing cavity.

[0014] By adopting the above-described technology, when the outside of the battery is subjected to an external force, the main beam body can effectively absorb the impact energy by deforming inward.

[0015] In some embodiments of this application, the energy-absorbing beam body further includes a first energy absorber, the first energy absorber being installed in a first energy-absorbing cavity.

[0016] By adopting the above-described technology, when the outside of the battery is subjected to an external force, the impact energy is transmitted to the first energy absorber via the main beam body, causing the main beam body and the first energy absorber to deform sequentially. As a result, the energy-absorbing beam body can absorb the impact energy more effectively, further reducing the risk of damage to the battery core group.

[0017] In some embodiments of this application, the first energy absorber is an energy absorbing rib that extends along the longitudinal direction of the main beam body and is connected between two opposing wall bodies of the main beam body.

[0018] By adopting the above-mentioned technology, the risk of damage to the battery core group can be further reduced by more effectively absorbing impact energy.

[0019] In some embodiments of this application, the first support beam extends along the longitudinal direction of the battery and is located on one side along the width direction of the battery.

[0020] By adopting the above-described technology, when one side of the battery along its width is subjected to an external force, the energy-absorbing beam body can effectively absorb the impact energy, thereby reducing the risk of damage to the battery core group.

[0021] In some embodiments of this application, the battery box further includes a protective plate that covers the side of the housing lid of the housing, the protective plate having a second energy absorption cavity.

[0022] By adopting the above-described technology, when the bottom of the battery is subjected to an external impact, the protective plate deforms inward, absorbing the impact energy. This effectively improves the situation in which the impact energy is transmitted to the battery core group, thereby effectively reducing the risk of damage to the battery core group.

[0023] In some embodiments of the present application, the protection plate includes a first plate body, a second plate body, and a second energy absorber. The first plate body and the second plate body form a second energy absorption cavity at an interval along the height direction of the battery, and the second energy absorber is installed in the second energy absorption cavity.

[0024] By adopting the above technical solution, when the bottom of the battery is subjected to an external force impact, the impact energy is transmitted to the second energy absorber and can be deformed by the second energy absorber. Thereby, the protection plate can more effectively absorb the impact energy and further reduce the risk of damage to the battery core group.

[0025] In some embodiments of the present application, the second energy absorber is an energy absorption rib, and the second energy absorber is connected between the first plate body and the second plate body.

[0026] By adopting the above technical solution, the risk of damage to the battery core group can be further reduced by more effectively absorbing the impact energy.

[0027] In some embodiments of the present application, the thickness direction of the second energy absorber is inclined with respect to the height direction of the battery.

[0028] By adopting the above technical solution, when the second energy absorber is subjected to an external force impact, it can quickly collapse and deform, thereby more effectively absorbing the impact energy and further reducing the risk of damage to the battery core group.

[0029] In some embodiments of the present application, the number of the second energy absorbers is plural, and the plural second energy absorbers are arranged in parallel along a direction perpendicular to the longitudinal direction of the second energy absorber, and the thickness directions of two adjacent second energy absorbers are inclined in different directions with respect to the height direction of the battery.

[0030] By adopting the above technical solution, when the protection plate is subjected to an external force impact, at least part of the impact energy received by two adjacent second energy absorbers cancels each other out, effectively improving the impact resistance of the protection plate and further reducing the risk of damage to the battery core group.

[0031] In some embodiments of the present application, the second energy absorber extends along the width direction of the battery.

[0032] By adopting the above technical solution, the impact resistance of the protection plate in the width direction of the battery is effectively improved. Thus, when one side along the width direction of the battery is subjected to an external force impact, the protection plate can effectively receive the impact energy and effectively reduce the risk of damage to the battery core group.

[0033] In some embodiments of the present application, at least part of the energy absorption beam body protrudes from the protection plate in a direction perpendicular to the longitudinal direction of the first support beam.

[0034] By adopting the above technical solution, when the battery is subjected to an external force impact, first, the energy absorption beam body can effectively reduce the risk of the impact energy being transmitted to the protection plate by absorbing the impact energy.

[0035] In some embodiments of the present application, the battery box further includes a protection plate, and the protection plate is covered on the side facing away from the housing cover of the housing.

[0036] By adopting the above technical solution, when the bottom of the battery is subjected to an external force impact, the protection plate can effectively absorb the impact energy and reduce the risk of damage to the battery core group.

[0037] In some embodiments of the present application, the battery core group is connected on the protection plate.

[0038] By adopting the above technical proposal, the battery core group can be connected between the housing lid and the protective plate, thereby improving the situation in which the battery core group shakes and effectively enhancing the reliability of the battery.

[0039] In some embodiments of this application, the battery box further includes a sealing material, which is installed between the housing and the protective plate.

[0040] By adopting the above-mentioned technology, the battery's sealing performance will be effectively improved, thereby effectively enhancing battery safety.

[0041] In some embodiments of this application, the battery further includes a first thermal management member, which is installed between the battery core group and a protective plate and is attached to the battery core group.

[0042] By adopting the above-mentioned technology, the battery's heat exchange performance can be effectively improved, thereby effectively enhancing the battery's safety.

[0043] In some embodiments of this application, the housing is used to connect the external frame.

[0044] By adopting the above technical proposal, the connection stress between the housing and the housing lid is effectively reduced, thereby effectively lowering the risk of fracture occurring at the connection point between the housing and the housing lid.

[0045] In some embodiments of this application, the battery box further includes a mounting assembly, the housing cover is connected to the mounting assembly, and the mounting assembly is used to connect an external frame.

[0046] By adopting the above technical proposal, it becomes easier to connect the housing lid to the external frame.

[0047] In some embodiments of this application, at least some mounting assemblies include a support member and a first connecting member, the support member being connected to a housing lid, and the first connecting member being connected to the support member and used to connect an external frame.

[0048] By adopting the above technical proposal, it becomes easier to connect the housing lid to the external frame.

[0049] In some embodiments of this application, the housing cover includes an upper wall, the battery core group is connected to the lower part of the upper wall, the support member is connected to the upper wall, and the first connecting member connects the support member and the upper wall to the outer frame.

[0050] By adopting the above technical proposal, the strength of the upper wall of the housing lid is effectively improved, thereby effectively increasing the mounting capacity of the battery core group on the upper wall of the housing lid.

[0051] In some embodiments of this application, the support member is connected to the upper part of the upper wall and extends along the width direction of the battery.

[0052] By adopting the above technical proposal, the impact resistance of the upper wall of the housing lid in the width direction of the battery is effectively improved, and the risk of deformation when one side of the housing lid along the width direction of the battery is subjected to an external impact is effectively reduced, thereby effectively reducing the risk of damage to the battery core group.

[0053] In some embodiments of this application, the battery box further includes a restraining structure mounted on the housing lid, which is used to restrain the expansion of the battery core group.

[0054] By adopting the above-described technology, the restraining action of the restraining structure resists the expansion force of the battery core group, thereby limiting the expansion deformation of the battery core group and effectively improving the safety performance of the battery.

[0055] In some embodiments of this application, the restraint structure includes two beam structures installed at intervals from each other, which work together to sandwich a group of battery cores.

[0056] By adopting the above-described technology, the clamping action of the two beam structures resists the expansion force of the battery core group, thereby limiting the expansion deformation of the battery core group and effectively improving the safety performance of the battery.

[0057] In some embodiments of this application, the housing cover includes a top wall and side walls, a beam structure extending along the width direction of the battery, and the beam structure being connected to at least one of the top wall and side walls.

[0058] By adopting the above technical proposal, the installation operation of the beam structure can be facilitated, the two beam structures can more effectively clamp the battery core group, the impact resistance of the housing lid along the width direction of the battery can be improved, and when one side of the housing lid along the width direction of the battery is subjected to an external impact force, the impact force can be effectively absorbed, effectively reducing the risk of deformation of the housing lid, and thereby effectively reducing the risk of damage to the battery core group.

[0059] In some embodiments of this application, the beam structure includes an adapter and a beam body, the adapter includes a matching portion and a mounting portion connected to each other, the matching portion is fitted into the shape of at least a portion of the inner wall surface of the side wall and connected to each other, and the beam body is connected to the mounting portion.

[0060] By adopting the above technical proposal, the matching section and at least a portion of the inner wall surface of the side wall are connected to each other, and the beam body is mounted on the adapter mounting section. As a result, the beam body is connected to the side wall via the adapter, effectively improving the connection strength between the beam body and the housing cover. This effectively reduces the risk of deformation or displacement occurring in the beam body and effectively improves the reliability of the battery used.

[0061] In some embodiments of this application, the restraint structure further includes a second connecting member, the second connecting member being connected between two beam structures.

[0062] By adopting the above technical proposal, the relative position of two adjacent beam structures is effectively restricted, further reducing the risk of deformation or displacement occurring in the beam structures.

[0063] In some embodiments of this application, the second connecting member is connected to the side of the beam structure that is away from the housing lid.

[0064] By adopting the above technical proposal, the risk of interference between the second connecting member and the battery core group is effectively reduced, and the connection of the second connecting member to the beam structure is facilitated.

[0065] In some embodiments of this application, the battery core group comprises a plurality of battery cells, the battery further comprises a second thermal management member, the second thermal management member is attached between two adjacent battery cells, and / or the battery further comprises a third thermal management member, the third thermal management member is installed between the battery core group and the housing lid and is attached to the battery core group.

[0066] By adopting the above-mentioned technology, the battery's heat exchange performance can be effectively improved, thereby effectively enhancing the battery's safety.

[0067] In some embodiments of this application, the battery core group is bonded to the housing lid.

[0068] By adopting the above-mentioned technology, it is possible to make the force between the battery core group and the housing lid more uniform, and by simplifying the assembly flow between the battery core group and the housing lid, the assembly efficiency of the battery can be effectively improved.

[0069] Embodiments of this application further provide an electric device comprising a frame and a battery as described in any one of the above embodiments, wherein the housing cover is connected to the frame.

[0070] The electric device according to the embodiment of this application has at least the following beneficial effects. Because the electric device according to the embodiment of this application employs the battery described in any one of the above embodiments, it effectively improves the range performance of the electric device. [Brief explanation of the drawing]

[0071] To more clearly illustrate the technical concepts in the embodiments of this application, the following briefly introduces the drawings that may be used in the embodiments or prior art descriptions. It is obvious that the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without expending any creative effort. [Figure 1] This is a schematic diagram of the structure of a vehicle according to an embodiment of this application. [Figure 2] This is a schematic diagram of the structure of a battery according to one embodiment of this application. [Figure 3] Figure 2 is a schematic diagram of the disassembled structure of the battery. [Figure 4] Figure 2 shows one of the schematic diagrams of the exploded structure of the battery housing cover, restraint structure, and mounting assembly. [Figure 5] Figure 2 shows the second schematic diagram of the exploded structure of the battery housing cover, restraint structure, and mounting assembly. [Figure 6] Figure 3 is a schematic diagram of the structure of the protective plate in the battery shown. [Figure 7] Figure 6 is a schematic diagram of the front structure of the protective plate. [Figure 8] Figure 7 is a schematic diagram of the enlarged structure of the protective plate at point B shown in Figure 7. [Figure 9] Figure 2 is a schematic diagram of the cross-sectional structure of the battery along the direction of line AA. [Figure 10] Figure 9 is a schematic diagram of the enlarged structure of the battery at point C. [Figure 11] This is a schematic diagram of the disassembled structure of a battery according to another embodiment of this application. [Figure 12] This is a schematic diagram of the disassembled structure of a battery according to another embodiment of this application. [Figure 13] This is a schematic diagram of the structure of a battery cell according to an embodiment of this application. [Figure 14] Figure 13 is a schematic diagram of the top structure of a battery cell. [Figure 15] Figure 14 is a schematic diagram of the cross-sectional structure of the battery cell along the DD line direction. [Modes for carrying out the invention]

[0072] To provide a clearer understanding of the technical problems, technical solutions, and beneficial effects addressed by this application, the application will be described in more detail, accompanied by the following drawings and embodiments. It should be understood that the specific embodiments described herein are used solely for the purpose of interpreting this application and are not intended to limit it.

[0073] It should be explained that when an element is said to be "fixed" or "installed" on another element, it may be directly located on the other element or indirectly located on that other element. When one element is said to be "connected" to another element, it may be directly connected to the other element or indirectly connected on that other element.

[0074] It should be understood that the directions or positional relationships indicated by terms such as "length," "width," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are directions or positional relationships shown based on the drawings, and are merely for the convenience and simplification of the description in this application. They do not indicate or imply that the mentioned device or element has a specific direction or must be configured and operated in a specific direction, and therefore should not be understood as limitations on this application.

[0075] Furthermore, the terms “first” and “second” are used solely for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features being referred to. Thus, features limited by “first” and “second” may explicitly or implicitly include one or more such features. In the description of this application, “multiple” means two or more unless otherwise explicitly stated or particularly limited.

[0076] An electric vehicle is a vehicle that is powered by electrical energy in all or part of its operating conditions. An electric vehicle includes a frame, a battery, and an electric drive system. The battery is generally mounted at the bottom of the frame, while the electric drive system is generally mounted at the front or rear of the frame. The battery is used to supply electrical energy to the electric drive system, which converts this electrical energy into mechanical energy to propel the electric vehicle.

[0077] In related technologies, a battery includes a battery box and a group of battery cores housed within the battery box. The housing of the battery box is connected to a frame to support the entire battery. However, because the housing must bear the entire weight of the battery, increasing the overall size of the housing, especially its height, is necessary to improve its mounting capacity. This significant increase in the weight of the battery leads to a substantial decrease in its mass energy density, which is detrimental to improving the range of electric vehicles.

[0078] To reduce the weight of the battery, the housing lid of the battery box in the embodiment of this application is connected to the frame, but the battery core group may also be connected to the housing lid. In this way, the load of at least a portion of the battery core group can be directly transmitted to the frame via the housing lid. In other words, the load on the housing of the battery box can be reduced by receiving the load of at least a portion of the battery core group via the frame. This reduces the strength requirements on the housing, reduces the size of the housing, for example, by reducing the height of the housing, thereby effectively reducing the weight of the battery, improving the mass energy density of the battery, and further effectively improving the driving range of the electric vehicle.

[0079] The batteries according to the embodiments of this application may be used in electric devices, which may include, but are not limited to, vehicles, portable devices, steamships, aerospace vehicles, electric toys, and power tools. Vehicles may be fuel-oil vehicles, gas vehicles, or electric vehicles, and electric vehicles may include pure electric vehicles, hybrid vehicles, or range-extender vehicles. Aerospace vehicles include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or portable electric toys, such as game consoles, electric vehicle toys, electric steamship toys, and electric airplane toys. Power tools include metal cutting power tools, polishing power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, hammer drills, concrete vibrators, and electric planers.

[0080] For the sake of explanation, the following embodiments will be described using the example that the electric device in one embodiment of this application is a vehicle.

[0081] Referring to Figure 1, Figure 1 is a schematic diagram of the structure of a vehicle 1000 according to an embodiment of the present application. The vehicle 1000 includes a frame 200, a battery 100, and an electric drive unit 300.

[0082] The frame 200 is the main support member of the vehicle 1000. The frame 200 has a cabin and a passenger compartment, where the cabin is used to house the vehicle 1000's electric drive unit 300, transmission, cooling system, etc., and the passenger compartment is used to provide an operating space and seating space for the driver and passengers. If the vehicle 1000 is a front-wheel drive vehicle, the cabin is located at the front of the frame 200, i.e., the cabin is the front cabin; if the vehicle 1000 is a rear-wheel drive vehicle, the cabin is located at the rear of the frame 200, i.e., the cabin is the rear cabin; if the vehicle 1000 is a four-wheel drive vehicle, the cabin is divided into a front cabin and a rear cabin, with the front cabin located at the front of the frame 200 and the rear cabin located at the rear of the frame 200. The passenger compartment is located between the front and rear of the frame 200.

[0083] The battery 100 is used to provide electrical energy to the electric drive unit 300, and the battery 100 may be installed at the bottom of the frame 200, for example, the battery 100 may be installed in the lower part of the driver's cab of the frame 200.

[0084] The electric drive unit 300 converts electrical energy provided by the battery 100 into mechanical energy and outputs this mechanical energy to the wheels 400 of the vehicle 1000 to drive the vehicle 1000 into motion. Of course, if the vehicle 1000 is equipped with a kinetic energy recovery function, the electric drive unit 300 may also act as a generator, converting mechanical energy into electrical energy, transporting the generated electrical energy to the battery 100, and storing it. The electric drive unit 300 is installed inside the cabin. Specifically, if the vehicle 1000 is a front-wheel drive vehicle, the electric drive unit 300 is installed at the front of the vehicle 1000 and is used to output the mechanical energy to the front wheels 400 of the vehicle 1000 to drive the vehicle 1000 in motion. If the vehicle 1000 is a rear-wheel drive vehicle, the electric drive unit 300 is installed at the rear of the vehicle 1000 and is used to output the mechanical energy to the rear wheels 400 of the vehicle 1000 to drive the vehicle 1000 in motion. If the vehicle 1000 is a four-wheel drive vehicle, there may be two electric drive units 300: one electric drive unit 300 is installed at the front of the vehicle 1000 and is used to output the mechanical energy to the front wheels 400 of the vehicle 1000, and the other electric drive unit 300 is installed at the rear of the vehicle 1000 and is used to output the mechanical energy to the rear wheels 400 of the vehicle 1000 to drive the vehicle 1000 in motion.

[0085] In the following, the battery 100 according to the embodiment of this application will be described with reference to the drawings. For the sake of convenience, the direction parallel to the central axis of the wheel 400 of the vehicle 1000 will be defined as the width direction of the battery 100. The central axis of the wheel 400 is the central axis of the wheel 400 when the vehicle 1000 is traveling in a straight line, for example, the positive and negative directions of the Y-axis shown in Figures 1 to 6 and Figures 9 to 12. The direction perpendicular to the central axis of the wheel 400 and parallel to the support plane of the vehicle 1000 will be defined as the longitudinal direction of the battery 100. The support plane is a plane that contacts the wheel surfaces of all wheels 400 of the vehicle 1000 on the side facing the frame 200 when the vehicle 1000 is in a running or stationary state, for example, the positive and negative directions of the X-axis as shown in Figures 1 to 8 and Figures 11 and 12, the direction perpendicular to the width direction and the longitudinal direction is defined as the height direction of the battery 100, for example, the positive and negative directions of the Z-axis as shown in Figures 3 to 12, and the direction from the battery 100 toward the support plane and perpendicular to the support plane is defined as the direction of gravity of the battery 100, for example, the negative direction of the Z-axis as shown in Figures 3 to 12.

[0086] In a first embodiment, referring to Figures 2, 3, 9, 11, and 12, an embodiment of the present application provides a battery 100 which includes a battery box 10 and a battery core group 20, the battery box 10 includes a housing lid 11 and a housing 12, the housing lid 11 is placed over the housing 12 and surrounds the housing 12 to form a chamber 13, the housing lid 11 is used to connect a frame 200, the battery core group 20 is housed in the chamber 13 and the battery core group 20 is connected to the housing lid 11.

[0087] The battery box 10 is used to provide a housing space for the battery core group 20, and the internal space of the chamber 13 constitutes this housing space. The housing lid 11 and the housing 12 are connected in order along the direction of gravity of the battery 100, surrounding it to form the chamber 13. The housing lid 11 is placed over the housing 12 and connected to the housing 12. The connection method between the housing lid 11 and the housing 12 may be welding, fastening, bonding, etc., but is not limited to these.

[0088] The housing cover 11 is used as part of the battery box 10 to close the opening at one end of the chamber 13. In this embodiment, the housing cover 11 is further used to support the load of at least a portion of the battery 100, for example, the housing cover 11 is used to support the load of at least a portion of the battery core group 20. In some embodiments, the housing cover 11 may have a plate-like structure and be placed over the housing 12. In some other embodiments, the housing cover 11 may have a hollow structure and be placed over the housing 12, and the cavity of the housing cover 11 constitutes part of the chamber 13. The material of the housing cover 11 may be aluminum, aluminum alloy, iron, stainless steel, copper, etc., but is not limited to these. In some embodiments, the housing cover 11 may be an integrally molded part, that is, the housing cover 11 is made using an integral molding process, which may be a die-casting process, a cast molding process, etc., but is not limited to these. In some other embodiments, the housing cover 11 may be a segmented connecting part, for example, the housing cover 11 may include multiple parts, which are molded individually and then connected to each other, and the method of connection between the parts may be welding, fastening, bonding, etc., but is not limited to these, and the materials of each part may be the same or different. When the housing cover 11 is connected to the frame 200, the method of connection between the housing cover 11 and the frame 200 may be fastening, welding, buckle connection, etc., but is not limited to these.

[0089] The housing 12 is a support member for the battery box 10. The material of the housing 12 may be aluminum, aluminum alloy, iron, stainless steel, copper, etc., but is not limited to these. The shape of the housing 12 may be circular, rectangular, square, etc., but is not limited to these. In some embodiments, the housing 12 may be a single-piece molded part, that is, the housing 12 is made using a single-piece molding process, which may be a die-casting process, a cast molding process, etc., but is not limited to these. In some other embodiments, the housing 12 may be a segmented and connected part, for example, the housing 12 may include multiple parts, which are molded individually and then connected to each other, and the connection method between each part may be welding, fastening, interlocking, etc., but is not limited to these, and the material of each part may be the same or different. When the battery 100 is assembled on the frame 200, the housing 12 may or may not be connected to the frame 200.

[0090] The battery core group 20 is the main body of the battery 100 and is used to store electrical energy. The battery core group 20 is connected to the housing lid 11, and the connection method between the battery core group 20 and the housing lid 11 may be, but is not limited to, adhesive, welding, or fastening. The battery core group 20 includes a battery cell 21, which is the smallest storage unit for storing electrical energy. Referring to Figures 13 to 14, the battery cell 21 includes a case 211, an electrode assembly 212, and electrode terminals 213.

[0091] The case 211 is a component that provides the internal environment for the battery cell 21, and this internal environment may be used to house the electrode assembly 212 and other functional components of the battery cell 21. The shape of the case 211 may be a rectangular parallelepiped, cylindrical, hexagonal prism, etc., but is not limited to these, and as can be understood, the shape of the case 211 may be determined according to the specific shape of the electrode assembly 212. The material of the case 211 may be copper, iron, aluminum, stainless steel, aluminum alloy, etc., but is not limited to these.

[0092] The electrode assembly 212 is a component in the battery cell 21 where an electrochemical reaction occurs. There may be one or more electrode assemblies 212. The electrode assembly 212 is mainly made by winding or laminating a positive electrode plate, a negative electrode plate, and a separator member. During the charging and discharging process of the battery cell 21, active ions (e.g., lithium ions) reciprocate between the positive electrode plate and the negative electrode plate, intercepting and deintercepting. The separator member is placed between the positive electrode plate and the negative electrode plate and can prevent short circuits between the positive and negative electrodes while allowing active ions to pass through. Here, the positive electrode plate may include a positive electrode current collector, a positive tab, and a positive electrode active material. The positive tab is connected to the positive electrode current collector, and the positive electrode active material is placed on at least one surface of the positive electrode current collector. For example, the positive electrode current collector has two opposing surfaces in its thickness direction, and the positive electrode active material is placed on one or both of the two opposing surfaces of the positive electrode current collector. The negative electrode plate may include a negative electrode current collector, a negative tab, and a negative electrode active material. The negative tab is connected to the negative electrode current collector, and the negative electrode active material is placed on at least one surface of the negative electrode current collector. For example, the negative electrode current collector has two opposing surfaces in its thickness direction, and the negative electrode active material is placed on one or both of the two opposing surfaces of the negative electrode current collector. The separator member is a separator. This application is not particularly limited to the type of separator, and any known porous structure separator having good chemical and mechanical stability may be selected.

[0093] The electrode terminal 213 is a component electrically connected to the electrode assembly 212 to output electrical energy from the battery cell 21 or to input electrical energy to the battery cell 21. The electrode terminal 213 may be mounted on the case 211, and a portion of the electrode terminal 213 may be exposed to the internal environment of the battery cell 21 and directly or indirectly connected to the positive or negative tab of the electrode assembly 212, while another portion of the electrode terminal 213 may be exposed to the external environment of the battery cell 21 and connected to components such as busbar members and sampling devices. The electrode terminal 213 may have a columnar structure, such as a cylindrical structure or a rectangular prism structure, or a plate-like structure, such as a disc or a square plate, or it may have other irregular three-dimensional structures, and is not specifically limited herein. The electrode terminal 213 may be made of one conductive material or multiple conductive materials, and the conductive materials may be copper, aluminum, nickel, zinc, iron, etc., but are not specifically limited herein.

[0094] The number of battery cells 21 may be multiple, and the multiple battery cells 21 may be connected in series, in parallel, or in series-parallel, with series-parallel connection meaning that multiple battery cells 21 have both series and parallel connections. The battery cells 21 may be secondary batteries or primary batteries, where a secondary battery is a battery cell 21 that can be used continuously by activating the active material through a charging method after discharge, and a primary battery is a battery cell 21 that cannot be used continuously by activating the active material through a charging method after the electrical energy of the battery cell 21 has been depleted. The battery cells 21 may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., but are not limited to these. The battery cell 21 may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell 21 of other shapes. The prismatic battery cell includes a bellows-shaped battery cell, a blade-shaped battery cell, and a polygonal prismatic battery cell, and the polygonal prismatic battery cell is, for example, a hexagonal prismatic battery cell. This application is not particularly limited.

[0095] In some embodiments, a group of battery cores 20 composed of multiple battery cells 21 may be housed in the battery box 10 by directly connecting multiple battery cells 21 in series, parallel, or series-parallel. The case 211 is connected to the housing lid 11, and the electrode terminals 213 are installed on parts of the case 211 other than the parts for connecting to the housing lid 11. For example, the electrode terminals 213 are installed on the side of the case 211 that is away from the housing lid 11 along the height direction of the battery 100. In this case, the battery cells 21 may be prism-shaped, cylindrical, or prismatic battery cells. Alternatively, for example, the electrode terminals 213 may be installed on one side or on opposing sides along the width direction of the battery 100. In this case, the battery cells 21 may be blade-shaped battery cells. Alternatively, for example, the electrode terminals 213 may be installed on one side or on opposing sides along the longitudinal direction of the battery 100. In this case, the battery cells 21 may be blade-shaped battery cells.

[0096] In some other embodiments, the battery 100 may first configure a battery module by connecting a plurality of battery cells 21 in series, parallel, or series-parallel, and then connect the plurality of battery modules in series, parallel, or series-parallel to form a battery core group 20, which is then housed in the battery box 10. The battery module includes a housing and an electrical extraction member, the plurality of battery cells 21 housed in the housing, and the electrical extraction member is directly or indirectly connected to the electrode terminals 213 of the battery cells 21 to output electrical energy from the battery cells 21 or to input electrical energy to the battery cells 21. The housing is directly connected to the housing cover 11, and the electrical extraction member is installed on a part of the housing other than the part for connecting to the housing cover 11. For example, the electrical extraction member is installed on the side of the housing that is away from the housing cover 11 along the height direction of the battery 100 of the housing, or for example, the electrical extraction member is installed on one side or opposite sides along the width direction of the battery 100 of the housing, or for example, the electrical extraction member is installed on one side or opposite sides along the longitudinal direction of the battery 100 of the housing.

[0097] In some embodiments, when the battery 100 is assembled to the frame 200, the housing lid 11 and the housing 12 are connected sequentially along the direction of gravity of the battery 100, with the side of the housing lid 11 away from the housing 12 used to connect to the frame 200, and the battery core group 20 connected to the side of the housing lid 11 facing the housing 12.

[0098] In the embodiment of this application, the housing lid 11 of the battery box 10 of the battery 100 is connected to the frame 200, but the battery core group 20 of the battery 100 may also be connected to the housing lid 11. In this way, at least a portion of the load of the battery core group 20 can be directly transmitted to the frame 200 via the housing lid 11. In other words, the load on the housing 12 of the battery box 10 can be reduced by receiving at least a portion of the load of the battery core group 20 via the frame 200. This reduces the strength requirements on the housing 12, reduces the size of the housing 12, for example, by reducing the height of the housing 12, thereby effectively reducing the weight of the battery 100, improving the mass energy density of the battery 100, and further effectively improving the range performance of the electric equipment.

[0099] In some embodiments of this application, referring to Figures 4, 5, and 9, the housing lid 11 has a first cavity 111, and the housing 12 has a second cavity 121, the first cavity 111 and the second cavity 121 are in communication with each other to form a chamber 13, and at least a portion of the battery core group 20 is housed in the first cavity 111.

[0100] In other words, in this embodiment, the housing lid 11 has a hollow structure, and in the height direction of the battery 100, at least a portion of the battery core group 20 may be housed in the first cavity 111, and in some embodiments, a portion of the battery core group 20 may be housed in the first cavity 111, and another portion of the battery core group 20 may be housed in the second cavity 121. Of course, in other embodiments, in the height direction of the battery 100, the entire battery core group 20 may be housed in the first cavity 111, and the second cavity 121 may be used to house other functional components of the battery 100, such as a battery management module, sampling line, cooling mechanism, etc.

[0101] In some embodiments, the housing lid 11 includes an upper wall 112 and side walls 113, the upper wall 112 being the portion that the housing lid 11 closes the opening at one end of the chamber 13, and the number of side walls 113 may be multiple, the multiple side walls 113 being connected to the periphery of the upper wall 112 and surrounding the upper wall 112 to form the first cavity 111.

[0102] By adopting the above-described technology, at least a portion of the battery core group 20 can be housed in the first cavity 111, effectively reducing the depth requirement for the second cavity 121. By reducing the height size of the housing 12 in this way, the depth of the second cavity 121 can be reduced, further reducing the weight of the battery 100, further improving the mass energy density of the battery 100, and further improving the range performance of the electric vehicle.

[0103] In some embodiments of this application, referring to Figures 3 and 9, the minimum depth H2 of the second cavity 121 is smaller than the maximum depth H1 of the first cavity 111.

[0104] In some other embodiments of this application, referring to Figures 3 and 9, the maximum depth H3 of the second cavity 121 is smaller than the maximum depth H1 of the first cavity 111.

[0105] The maximum depth H1 of the first cavity 111 is the maximum size of the first cavity 111 along the height direction of the battery 100, similarly, the minimum depth H2 of the second cavity 121 is the minimum size of the second cavity 121 along the height direction of the battery 100, and the maximum depth H3 of the second cavity 121 is the maximum size of the second cavity 121 along the height direction of the battery 100.

[0106] The multiple side walls 113 may have the same or different heights. In some embodiments, as shown in Figures 4 and 5, the maximum height of two side walls 113 positioned opposite each other along the width direction of the battery 100 is greater than the maximum height of two side walls 113 positioned opposite each other along the longitudinal direction of the battery 100. In this case, the side wall 113 with the relatively larger maximum height corresponds to the position of the maximum depth H1 of the first cavity 111.

[0107] Different parts of the housing 12 may have the same or different heights. In some embodiments, as shown in Figure 3, the housing 12 includes a first support beam 122 and a second support beam 123, where the maximum height of the first support beam 122 is smaller than the maximum height of the second support beam 123. In this case, the first support beam 122, with its relatively smaller maximum height, corresponds to the position of the minimum depth H2 of the second cavity 121, and the second support beam 123, with its relatively larger maximum height, corresponds to the position of the maximum depth H3 of the second cavity 121.

[0108] By adopting the above-described technology, compared to conventional designs in which the maximum depth of the second cavity is greater than the maximum depth of the first cavity, the embodiment of this application can accommodate a larger volume of the battery core group 20 within the first cavity 111, further reducing the depth requirement for the second cavity 121. This further reduces the height size of the housing 12, thereby further reducing the weight of the housing 12 and the total weight of the battery 100, further improving the mass energy density of the battery 100, and further improving the range performance of the electric vehicle.

[0109] In some embodiments of this application, referring to Figures 3, 9, and 10, the housing 12 includes a first support beam 122, the first support beam 122 includes a support beam body 1221 and an energy-absorbing beam body 1222, the energy-absorbing beam body 1222 being connected to the side of the support beam body 1221 facing away from the chamber 13.

[0110] The first support beam 122 is a support member of part of the housing 12. In some embodiments, the size of the first support beam 122 along the width direction of the battery 100 is smaller than the size of the first support beam 122 along the longitudinal direction of the battery 100, that is, the first support beam 122 extends along the longitudinal direction of the battery 100, for example, the first support beam 122 extends linearly along the longitudinal direction of the battery 100, or for example, the first support beam 122 extends in a bend along the longitudinal direction of the battery 100, and the number of first support beams 122 may be two, and the two first support beams 122 are installed at intervals along the width direction of the battery 100. In some other embodiments, the size of the first support beam 122 along the longitudinal direction of the battery 100 is smaller than the size of the first support beam 122 along the width direction of the battery 100, that is, the first support beam 122 extends along the width direction of the battery 100, for example, the first support beam 122 extends linearly along the width direction of the battery 100, or for example, the first support beam 122 extends in a curved manner along the width direction of the battery 100, and the number of first support beams 122 may be two, and the two first support beams 122 are installed spaced apart along the longitudinal direction of the battery 100.

[0111] The support beam body 1221 is the main support member of the first support beam 122, and the energy absorbing beam body 1222 is used to absorb the impact energy of external forces acting on the first support beam 122. In some embodiments, the energy absorbing beam body 1222 may have a strip structure and extend along the longitudinal direction of the support beam body 1221. In some other embodiments, the energy absorbing beam body 1222 may include a plurality of energy absorbing sections (not shown), which are spaced apart along the longitudinal direction of the support beam body 1221. In some embodiments, the support beam body 1221 and the energy absorbing beam body 1222 may be integrally molded parts, for example, by a die-casting process. In some other embodiments, the support beam body 1221 and the energy absorbing beam body 1222 may be separate parts. For example, the support beam body 1221 and the energy absorbing beam body 1222 may be molded individually and then connected to each other. The connection method between the support beam body 1221 and the energy absorbing beam body 1222 may be welding, fastening, or the like, but not limited to these. When the support beam body 1221 and the energy absorbing beam body 1222 are separate parts, the material of the support beam body 1221 and the material of the energy absorbing beam body 1222 may be the same. For example, the material of the support beam body 1221 and the material of the energy absorbing beam body 1222 may be an aluminum alloy. Alternatively, the material of the support beam body 1221 and the energy absorbing beam body 1222 may be different. For example, the material of the support beam body 1221 may be an aluminum alloy, and the material of the energy absorbing beam body 1222 may be stainless steel.

[0112] In some embodiments, the housing 12 may further include a second support beam 123 connected between two first support beams 122, the second support beam 123 being another support member of the housing 12, and the material of the second support beam 123 may be, but is not limited to, aluminum, aluminum alloy, iron, stainless steel, copper, etc. When the first support beam 122 extends along the longitudinal direction of the battery 100, the size of the second support beam 123 along the longitudinal direction of the battery 100 is smaller than the size of the second support beam 123 along the width direction of the battery 100, that is, the second support beam 123 extends along the width direction of the battery 100, for example, the second support beam 123 extends in a straight line along the width direction of the battery 100, or for example, the second support beam 123 extends in a bent shape along the width direction of the battery 100, and there may be two second support beams 123, which are installed at intervals along the longitudinal direction of the battery 100. When the first support beam 122 extends along the width direction of the battery 100, the size of the second support beam 123 along the width direction of the battery 100 is smaller than the size of the second support beam 123 along the longitudinal direction of the battery 100, that is, the second support beam 123 extends along the longitudinal direction of the battery 100, for example, the second support beam 123 extends linearly along the longitudinal direction of the battery 100, or for example, the second support beam 123 extends in a curved manner along the longitudinal direction of the battery 100. The number of second support beams 123 may be two, and the two second support beams 123 are installed at intervals along the width direction of the battery 100, and the two first support beams 122 and the two second support beams 123 surround and form the second cavity 121. The second support beam 123 may be provided with electrical connection ports for connecting a high-voltage box, pipeline connection ports for connecting a thermal management member, and so on.

[0113] By adopting the above-described technology, when the outside of the battery 100 is subjected to an external force, the energy-absorbing beam body 1222 effectively absorbs the impact energy, thereby effectively improving the situation in which the impact energy is transmitted to the battery core group 20 via the housing 12, and effectively reducing the risk of damage to the battery core group 20.

[0114] In some embodiments of this application, referring to Figure 10, the energy-absorbing beam body 1222 includes a main beam body 12221, the main beam body 12221 is connected to the side of the support beam body 1221 facing away from the chamber 13 and has a first energy-absorbing cavity 12223.

[0115] The main beam body 12221 is the main body portion of the energy-absorbing beam body 1222. The main beam body 12221 has a hollow structure, and the cavity of the main beam body 12221 constitutes the first energy-absorbing cavity 12223. The first energy-absorbing cavity 12223 is used to provide a collapse space for the main beam body 12221. When the energy-absorbing beam body 1222 is subjected to an external force, the main beam body 12221 collapses inward, thereby effectively absorbing the impact energy. The cross-sectional shape of the main beam body 12221 may be a square, circle, triangle, or the like, but is not limited to these.

[0116] By adopting the above-described technology, when the outside of the battery 100 is subjected to an external force, the main beam body 12221 can effectively absorb the impact energy by deforming inward.

[0117] In some embodiments of this application, referring to Figure 10, the energy-absorbing beam body 1222 further includes a first energy absorber 12222, the first energy absorber 12222 is installed in a first energy-absorbing cavity 12223.

[0118] The first energy absorber 12222 supports the main beam body 12221 and is used to perform secondary energy absorption. That is, when the energy-absorbing beam body 1222 is subjected to an external force, the main beam body 12221 absorbs the impact energy and undergoes crushing deformation. The main beam body 12221 then pushes out the first energy absorber 12222, causing crushing deformation in the first energy absorber 12222, thereby achieving the purpose of secondary energy absorption. The first energy absorber 12222 may be an energy-absorbing rib, an energy-absorbing adhesive, or the like, but is not limited to these.

[0119] By adopting the above-described technology, when the outside of the battery 100 is subjected to an external force, the impact energy is transmitted to the first energy absorber 12222 via the main beam body 12221, causing the main beam body 12221 and the first energy absorber 12222 to deform sequentially. As a result, the energy absorbing beam body 1222 can absorb the impact energy more effectively, further reducing the risk of damage to the battery core group 20.

[0120] In some embodiments of this application, referring to Figure 10, the first energy absorber 12222 is an energy absorbing rib that extends along the longitudinal direction of the main beam body 12221 and is connected between two opposing wall bodies of the main beam body 12221.

[0121] In some embodiments, when the first support beam 122 extends along the longitudinal direction of the battery 100, the support beam body 1221 and the energy absorbing beam body 1222 also extend along the longitudinal direction of the battery 100, i.e., the main beam body 12221 and the first energy absorber 12222 also extend along the longitudinal direction of the battery 100. The first energy absorber 12222 may be connected between two opposing walls of the main beam body 12221 along the width direction of the battery 100, or the first energy absorber 12222 may be connected between two opposing walls of the main beam body 12221 along the height direction of the battery 100.

[0122] In some other embodiments, when the first support beam 122 extends along the width direction of the battery 100, the support beam body 1221 and the energy absorbing beam body 1222 also extend along the width direction of the battery 100, i.e., the main beam body 12221 and the first energy absorber 12222 also extend along the width direction of the battery 100. The first energy absorber 12222 may be connected between two opposing walls of the main beam body 12221 along the longitudinal direction of the battery 100, or the first energy absorber 12222 may be connected between two opposing walls of the main beam body 12221 along the height direction of the battery 100.

[0123] It should be explained that the number of the first energy absorbers 12222 may be one or multiple, and may be specifically determined according to the requirements of the actual application.

[0124] By adopting the above-described technology, the risk of damage to the battery core group 20 can be further reduced by more effectively absorbing impact energy.

[0125] In some embodiments of this application, referring to Figure 3, the first support beam 122 extends along the longitudinal direction of the battery 100 and is located on one side along the width direction of the battery 100.

[0126] To make it clear, the first support beam 122 may extend in a straight line along the longitudinal direction of the battery 100, or it may extend in a curved manner along the longitudinal direction of the battery 100.

[0127] By adopting the above-described technology, when one side of the battery 100 along its width direction is subjected to an external force, the energy-absorbing beam body 1222 can effectively absorb the impact energy, thereby reducing the risk of damage to the battery core group 20.

[0128] In some embodiments of this application, referring to Figures 3 and 6 to 9, the battery box 10 further includes a protective plate 14 that covers the side of the housing lid 11 of the housing 12, the protective plate 14 having a second energy absorption cavity 141.

[0129] The protective plate 14 is a protective member of the battery box 10. The protective plate 14 is placed over the side of the housing 12 that is away from the housing lid 11 in order to close the opening at the end of the chamber 13 that is away from the housing lid 11, and serves to protect the battery core group 20. The material of the protective plate 14 may be, but is not limited to, aluminum, aluminum alloy, iron, stainless steel, copper, etc. As can be understood, the protective plate 14 is connected to the housing 12, and the method of connection between the protective plate 14 and the housing 12 may be, but is not limited to, welding, fastening, adhesive, etc. The protective plate 14 has a hollow structure, and the cavity of the protective plate 14 constitutes the second energy absorption cavity 141. The second energy absorption cavity 141 is used to provide a crushing space for the protective plate 14, and when the protective plate 14 is subjected to an external force, the protective plate 14 can effectively absorb the impact energy by deforming inward. In some embodiments, the protective plate 14 may be a single-piece molded part, that is, the protective plate 14 is made using a single-piece molding process, which may be a die-casting process, a cast molding process, or the like, but is not limited to these. In some other embodiments, the protective plate 14 may be a segmented and connected part, for example, the protective plate 14 may consist of multiple parts, which are molded individually and then connected to each other, and the method of connection between the multiple parts may be welding, bonding, or the like, but is not limited to these, and the materials of each part may be the same or different.

[0130] By adopting the above-described technology, when the bottom of the battery 100 is subjected to an external impact, the protective plate 14 deforms inward, absorbing the impact energy. This effectively improves the situation in which the impact energy is transmitted to the battery core group 20, and effectively reduces the risk of damage to the battery core group 20.

[0131] In some embodiments of this application, referring to Figures 6 to 8, the protective plate 14 includes a first plate body 142, a second plate body 143, and a second energy absorber 144, wherein the first plate body 142 and the second plate body 143 are spaced apart along the height direction of the battery 100 to form a second energy absorption cavity 141, and the second energy absorber 144 is installed within the second energy absorption cavity 141.

[0132] The first plate 142 and the second plate 143 jointly constitute the main body of the protective plate 14, and the first plate 142 and the second plate 143 form a second energy absorption cavity 141 spaced apart along the height direction of the battery 100, so as can be understood, the first plate 142 and the second plate 143 are parallel to each other, the plate surfaces of the first plate 142 and the plate surfaces of the second plate 143 are facing each other and spaced apart, the first plate 142 may be installed on the side of the second plate 143 that is away from the housing lid 11, and the first plate 142 and the second plate 143 are connected via the necessary connecting structure.

[0133] The second energy absorber 144 performs secondary energy absorption; that is, when the main body, composed of the first plate 142 and the second plate 143, is subjected to an external force, the main body pushes out the second energy absorber 144, causing crushing deformation in the second energy absorber 144, thereby achieving the purpose of secondary energy absorption. The second energy absorber 144 may be, but is not limited to, an energy-absorbing rib or an energy-absorbing adhesive. The materials of the first plate 142, the second plate 143, and the second energy absorber 144 may be the same. For example, the materials of the first plate 142, the second plate 143, and the second energy absorber 144 may be aluminum alloys. Alternatively, the materials of the first plate 142, the second plate 143, and the second energy absorber 144 may be different. For example, the materials of the first plate 142 and the second plate 143 may be aluminum alloys, and the material of the second energy absorber 144 may be stainless steel.

[0134] By adopting the above-described technology, when the bottom of the battery 100 is subjected to an external impact, the impact energy is transmitted to the second energy absorber 144, causing the second energy absorber 144 to deform. This allows the protective plate 14 to absorb the impact energy more effectively, further reducing the risk of damage to the battery core group 20.

[0135] In some embodiments of this application, referring to Figures 7 and 8, the second energy absorber 144 is an energy absorbing rib, and the second energy absorber 144 is connected between the first plate 142 and the second plate 143.

[0136] The second energy absorber 144 may extend along any direction between the first plate 142 and the second plate 143. For example, the second energy absorber 144 may extend along the width direction of the battery 100, or it may extend along the longitudinal direction of the battery 100. The number of second energy absorbers 144 may be one or more, and may be specifically determined according to the requirements of the actual application.

[0137] By adopting the above-described technology, the risk of damage to the battery core group 20 can be further reduced by more effectively absorbing impact energy.

[0138] In some embodiments of this application, referring to Figure 8, the thickness direction of the second energy absorber 144 is inclined with respect to the height direction of the battery 100.

[0139] In this embodiment, the second energy absorber 144 has a strip-shaped plate structure, the thickness direction of the second energy absorber 144 is perpendicular to the plate surface of the second energy absorber 144, and the thickness direction of the second energy absorber 144 is inclined with respect to the height direction of the battery 100. In other words, the thickness direction of the second energy absorber 144 is neither perpendicular nor parallel to the height direction of the battery 100, and the magnitude of the angle between the thickness direction of the second energy absorber 144 and the height direction of the battery 100 may be determined according to the requirements of the actual application. For example, the angle α between the thickness direction of the second energy absorber 144 and the height direction of the battery 100 may be 45°, 60°, 75°, etc.

[0140] By adopting the above-described technology, the second energy absorber 144 can rapidly deform and collapse when subjected to an external force, thereby more effectively absorbing impact energy and further reducing the risk of damage to the battery core group 20.

[0141] In some embodiments of this application, referring to Figure 8, the number of second energy absorbers 144 is multiple, and the multiple second energy absorbers 144 are spaced apart along a direction perpendicular to the longitudinal direction of the second energy absorber 144, and the thickness direction of two adjacent second energy absorbers 144 is inclined in different directions with respect to the height direction of the battery 100.

[0142] The arrangement of multiple second energy absorbers 144 parallel to each other along a direction perpendicular to the longitudinal direction of the second energy absorber 144 means that the longitudinal directions of the multiple second energy absorbers 144 are parallel to each other and that they are installed in parallel in sequence along a direction perpendicular to the longitudinal direction of the second energy absorber 144, and that two adjacent second energy absorbers 144 may be installed with a gap between them or may be in contact with each other. The arrangement of two adjacent second energy absorbers 144 whose thickness directions are inclined in different directions with respect to the height direction of the battery 100 means that the thickness directions of two adjacent second energy absorbers 144 are not parallel to each other.

[0143] In some embodiments, the thickness directions of two adjacent second energy absorbers 144 are opposite to the inclination direction of the height direction of the battery 100, that is, the angle between the thickness direction of one of the two adjacent second energy absorbers 144 and the height direction of the battery 100 is equal to the angle between the thickness direction of the other second energy absorber 144 and the height direction of the battery 100, and the thickness directions of the two second energy absorbers 144 are not parallel to each other, in other words, an arbitrary plane parallel to the longitudinal direction of the second energy absorber 144 and the height direction of the battery 100 is defined as a bisecting plane, and the angle between the thickness directions of two adjacent second energy absorbers 144 is bisected by the bisecting plane.

[0144] This embodiment will be further described below, using the example that the first plate 142 is installed on the side of the second plate 143 that faces away from the housing lid 11.

[0145] Referring to Figure 8, when the first plate 142 is subjected to an external impact, the impact force F is transmitted to the second energy absorber 144 via the first plate 142, forming a thrust F1 acting on the second energy absorber 144. The direction of the thrust F1 is from the first plate 142 along the second energy absorber 144 toward the second plate 143. When the thrust F1 is decomposed, a first component force F2 parallel to the height direction of the battery 100 and a second component force F3 parallel to the longitudinal direction of the battery 100 are obtained. Since the thickness direction of the two adjacent second energy absorbers 144 is opposite to the inclination direction of the height direction of the battery 100, the second component force F3 received by the two adjacent second energy absorbers 144 is in opposite directions, and as a result the second component force F3 received by the two adjacent second energy absorbers 144 cancel each other out, that is, at least a portion of the impact force received by the two adjacent second energy absorbers 144 cancels each other out.

[0146] By adopting the above-described technology, when the protective plate 14 is subjected to an external force, the impact resistance of the protective plate 14 can be effectively improved by having the two adjacent second energy absorbers 144 cancel out at least a portion of the impact energy received by each other, thereby further reducing the risk of damage to the battery core group 20.

[0147] In some embodiments of this application, the second energy absorber 144 extends along the width direction of the battery 100.

[0148] In other words, the longitudinal direction of the second energy absorber 144 is parallel to the width direction of the battery 100, and if one side along the width direction of the battery 100 is subjected to an external force, the impact energy is transmitted from one end of the second energy absorber 144 to the other end, effectively reducing the risk of the second energy absorber 144 bending.

[0149] By adopting the above technical proposal, the impact resistance of the protective plate 14 in the width direction of the battery 100 can be effectively improved. Thus, when one side of the battery 100 along the width direction is subjected to an external impact, the protective plate 14 can effectively absorb the impact energy, thereby effectively reducing the risk of damage to the battery core group 20.

[0150] In some embodiments of this application, referring to Figure 8, the second energy absorber 144 is an energy absorbing rib, the thickness direction of the second energy absorber 144 is inclined with respect to the height direction of the battery 100, and the second energy absorber 144 extends along the width direction of the battery 100.

[0151] By adopting the above technical proposal, the stress application area of ​​the second energy absorber 144 along the width direction of the battery 100 is effectively increased, and the impact resistance of the protective plate 14 in the width direction of the battery 100 is effectively improved. In this way, when one side along the width direction of the battery 100 is subjected to an external impact, the protective plate 14 effectively absorbs the impact energy, thereby effectively reducing the risk of damage to the battery core group 20.

[0152] In some embodiments of this application, referring to Figure 10, at least a portion of the energy-absorbing beam body 1222 protrudes from the protective plate 14 in a direction perpendicular to the longitudinal direction of the first support beam 122.

[0153] To make it clear, when the first support beam 122 extends along the longitudinal direction of the battery 100, at least a portion of the energy absorbing beam body 1222 protrudes from the protective plate 14 in the width direction of the battery 100.

[0154] In some embodiments, in the height direction of the battery 100, the energy absorbing beam body 1222 protrudes away from the housing lid 11 from the side of the support beam body 1221 that is away from the housing lid 11, so that the first support beam 122 exhibits a substantially stepped structure, and the protective plate 14 may be connected to the stepped space defined by the portion of the energy absorbing beam body 1222 that protrudes from the support beam body 1221 and the support beam body 1221, or the protective plate 14 may be connected on the support beam body 1221, for example, the protective plate 14 may be connected to the side of the support beam body 1221 that is away from the housing lid 11, or the protective plate 14 may be connected on the energy absorbing beam body 1222, for example, the protective plate 14 may be connected to the side of the energy absorbing beam body 1222 that is facing the chamber 13.

[0155] In some other embodiments, in the height direction of the battery 100, the side of the energy absorbing beam body 1222 that faces the housing lid 11 may be flush with the side of the support beam body 1221 that faces the housing lid 11, or the side of the support beam body 1221 that faces the housing lid 11 may protrude from the side of the energy absorbing beam body 1222 that faces the housing lid 11, and the protective plate 14 is connected to the support beam body 1221, and the protective plate 14 and the energy absorbing beam body 1222 do not overlap each other in the height direction of the battery 100.

[0156] Of course, in other embodiments, the protective plate 14 may overlap with a portion of the energy-absorbing beam body 1222 in the height direction of the battery 100, but at least a portion of the energy-absorbing beam body 1222 protrudes from the protective plate 14 in a direction perpendicular to the longitudinal direction of the first support beam 122.

[0157] By adopting the above technical proposal, when the battery 100 is subjected to an external force, the energy-absorbing beam body 1222 absorbs the impact energy first, thereby effectively reducing the risk of the impact energy being transmitted to the protective plate 14.

[0158] In some embodiments of this application, the battery core group 20 is connected to the protective plate 14.

[0159] In some embodiments, when a battery core group 20 is configured by directly connecting multiple battery cells 21 in series, parallel, or series-parallel, the case 211 is directly connected to the housing lid 11 and the protective plate 14, and the electrode terminals 213 are installed on parts of the case 211 other than the parts connecting the housing lid 11 and the protective plate 14. For example, the electrode terminals 213 are installed on one side or on opposing sides of the case 211 along the width direction of the battery 100, in which case the battery cells 21 may be blade-type battery cells. Alternatively, for example, the electrode terminals 213 are installed on one side or on opposing sides of the case 211 along the longitudinal direction of the battery 100, in which case the battery cells 21 may be blade-type battery cells.

[0160] In some other embodiments, when a battery module is first constructed by connecting multiple battery cells 21 in series, parallel, or series-parallel, and then the battery core group 20 is formed by further connecting multiple battery modules in series, parallel, or series-parallel, the housing is directly connected to the housing lid 11 and protective plate 14, and the electrical extraction members are installed on parts of the housing other than the parts connecting the housing lid 11 and protective plate 14. For example, the electrical extraction members are installed on one side or on opposing sides along the width direction of the battery 100 of the housing, or, for example, on one side or on opposing sides along the longitudinal direction of the battery 100 of the housing.

[0161] It should be explained that the connection method between the battery core group 20 and the protective plate 14 may be adhesive, fastening, etc., but is not limited to these. In some embodiments, the battery core group 20 is bonded to the protective plate 14, which not only makes the force between the battery core group 20 and the protective plate 14 more uniform, but also simplifies the assembly flow between the battery core group 20 and the protective plate 14, thereby effectively improving the assembly efficiency of the battery 100.

[0162] By adopting the above technical proposal, the battery core group 20 is connected between the housing cover 11 and the protective plate 14, thereby improving the situation in which the battery core group 20 shakes and effectively improving the reliability of the battery 100.

[0163] In some embodiments of this application, referring to Figures 3 and 10, the battery box 10 further includes a sealing material 15, which is installed between the housing 12 and the protective plate 14.

[0164] The sealing material 15 is a component for sealing the gap between the housing 12 and the protective plate 14. The sealing material 15 is made using a sealing material, which may be rubber, silica gel, adhesive, etc., but is not limited to these. The sealing material 15 may have an annular structure, and the sealing material 15 is installed around the chamber 13 to reduce the risk of the external environment of the chamber 13 and the battery 100 communicating through the gap between the housing 12 and the protective plate 14.

[0165] By adopting the above technical proposal, the sealing performance of battery 100 is effectively improved, thereby effectively enhancing the safety of battery 100.

[0166] In some embodiments of this application, referring to Figure 11, the battery 100 further includes a first thermal management member 30, which is installed between the battery core group 20 and the protective plate 14 and is attached to the battery core group 20.

[0167] The first thermal management member 30 is a member for performing heat exchange with the battery core group 20, and the heat exchange may be cooling or heating the battery core group 20. The first thermal management member 30 may be a liquid cooling member, an air cooling member, a metal heat conductive member, etc., but is not limited to these.

[0168] In some embodiments, the first thermal management member 30 is a liquid cooling plate, one surface of the first thermal management member 30 is attached to the battery core group 20, and the other surface of the first thermal management member 30 may be attached to the protective plate 14 or installed at a distance from the protective plate 14, and in some embodiments, the first thermal management member 30 may be integrally formed on the protective plate 14. The battery 100 may further include a first inlet pipe and a first outlet pipe, the first inlet pipe being connected to the inlet of the first heat management member 30, and the first outlet pipe being connected to the outlet of the first heat management member 30. The coolant enters the cooling channel of the first heat management member 30 through the inlet of the first heat management member 30 along the first inlet pipe, and is discharged to the outside through the outlet of the first heat management member 30 along the first outlet pipe, thereby circulating the coolant within the first heat management member 30 and effectively performing heat exchange of the battery core group 20.

[0169] In some embodiments, when a battery core group 20 is configured by directly connecting multiple battery cells 21 in series, parallel, or series-parallel, the case 211 is directly connected to the housing lid 11, and the electrode terminals 213 are installed on parts of the case 211 other than the part for connecting to the housing lid 11 and the part facing the first thermal management member 30. For example, the electrode terminals 213 are installed on one side or opposite sides of the case 211 along the width direction of the battery 100, in which case the battery cells 21 may be blade-type battery cells. Alternatively, for example, the electrode terminals 213 are installed on one side or opposite sides of the case 211 along the longitudinal direction of the battery 100, in which case the battery cells 21 may be blade-type battery cells.

[0170] In some other embodiments, when a battery module is first constructed by connecting multiple battery cells 21 in series, parallel, or series-parallel, and then the battery core group 20 is formed by further connecting multiple battery modules in series, parallel, or series-parallel, the housing is directly connected to the housing lid 11, and the electrical extraction members are installed on parts of the housing other than the part for connecting the housing lid 11 and the part facing the first thermal management member 30. For example, the electrical extraction members are installed on one side of the housing along the width direction of the battery 100 or on opposing sides, or for example, the electrical extraction members are installed on one side of the housing along the longitudinal direction of the battery 100 or on opposing sides.

[0171] By adopting the above-mentioned technology, the heat exchange performance of battery 100 can be effectively improved, thereby effectively enhancing the safety of battery 100.

[0172] In some embodiments of this application, the housing 12 is used to connect the frame 200.

[0173] When assembling the battery 100 onto the frame 200, the housing cover 11 and the housing 12 are connected to the frame 200. In this case, some of the load from the housing cover 11 and some of the load from the battery core group 20 are transmitted to the frame 200 via the housing 12, thereby reducing the connection stress between the housing 12 and the housing cover 11.

[0174] The connection method between the housing 12 and the frame 200 may be fastening, welding, buckle connection, etc., but is not limited to these. In some embodiments, connection through-holes are provided in the housing 12, and the battery box 10 further includes fasteners, which are connected to the frame 200 via the connection through-holes, and the fasteners may be bolts, screws, rivets, etc., but is not limited to these. The battery box 10 may further include a connection sleeve 18, which is installed in the connection through-hole and is installed coaxially with the connection through-hole, and the fasteners are drilled in the connection sleeve 18 and connected to the frame 200.

[0175] By adopting the above-described technology, the connection stress between the housing 12 and the housing lid 11 is effectively reduced, thereby effectively reducing the risk of fracture occurring at the connection point between the housing 12 and the housing lid 11.

[0176] In some embodiments of this application, referring to Figures 3, 4, and 5, the battery box 10 further includes a mounting assembly 16, the battery core group 20 is connected to the housing cover 11, the housing cover 11 is connected to the mounting assembly 16, and the mounting assembly 16 is used to connect the frame 200.

[0177] The mounting assembly 16 is a component for connecting the housing lid 11 and the frame 200. The mounting assembly 16 may be a fastening connection assembly, a buckle connection assembly, a clamping and fixing assembly, etc., but is not limited to these. The mounting assembly 16 may be installed on the surface of the housing lid 11 facing away from the battery core group 20, or the mounting assembly 16 may be installed on the circumferential side of the housing lid 11.

[0178] By adopting the above technical proposal, it becomes easier to connect the housing cover 11 onto the frame 200.

[0179] In some embodiments of this application, referring to Figures 4 and 5, at least some of the mounting assemblies 16 include a support member 161 and a first connecting member 162, the support member 161 being connected to the housing lid 11, and the first connecting member 162 being connected to the support member 161 and used to connect the frame 200.

[0180] To make it clear, the number of mounting assemblies 16 may be multiple, some of which may be connected to the middle of the housing lid 11, and some of which may be connected to the outer periphery of the housing lid 11, where the portion of the mounting assemblies 16 connected to the middle of the housing lid 11 may include a support member 161 and a first connecting member 162.

[0181] The support member 161 is a support member of the mount assembly 16. The support member 161 may be a support plate, a support beam, or the like, but is not limited to these. The material of the support member 161 may be aluminum, aluminum alloy, iron, stainless steel, copper, or the like, but is not limited to these. The connection method between the support member 161 and the housing cover 11 may be welding, fastening, adhesive, or the like, but is not limited to these. There may be one support member 161 or multiple support members.

[0182] The first connecting member 162 is a member for connecting the frame 200. The first connecting member 162 may be, but is not limited to, a bolt, screw, rivet, hook, etc. The connection method between the first connecting member 162 and the support member 161 may be, but is not limited to, welding, fastening, etc. In some embodiments, one first connecting member 162 is installed on each support member 161, and in some other embodiments, multiple first connecting members 162 are installed on each support member 161.

[0183] By adopting the above technical proposal, it becomes easier to connect the housing cover 11 onto the frame 200.

[0184] In some embodiments of this application, referring to Figures 4 and 5, the battery core group 20 is connected to the lower part of the upper wall 112, the support member 161 is connected to the upper wall 112, and the first connecting member 162 connects the support member 161 and the upper wall 112 to the frame 200.

[0185] To make it easier to understand, when the housing cover 11 is connected to the frame 200, the upper part of the top wall 112 is installed facing the frame 200, and the lower part of the top wall 112 is installed facing the protective plate 14.

[0186] By adopting the above technical proposal, the strength of the upper wall 112 of the housing lid 11 is effectively improved, thereby effectively increasing the mounting capacity of the battery core group 20 by the upper wall 112 of the housing lid 11.

[0187] In some embodiments of this application, referring to Figures 4 and 5, the support member 161 is connected to the upper part of the upper wall 112 and extends along the width direction of the battery 100.

[0188] In this embodiment, the support member 161 has a long, strip-like structure. For example, the support member 161 may be a strip-shaped support plate, a support beam, etc. The longitudinal direction of the support member 161 is parallel to the width direction of the battery 100. When one side along the width direction of the battery 100 is subjected to an external force, the impact energy is transmitted from one end of the support member 161 to the other end, effectively reducing the risk of the support member 161 bending.

[0189] By adopting the above technical proposal, the impact resistance of the upper wall 112 of the housing cover 11 in the width direction of the battery 100 is effectively improved, and the risk of deformation when one side of the housing cover 11 along the width direction of the battery 100 is subjected to an external impact is effectively reduced, thereby effectively reducing the risk of damage to the battery core group 20.

[0190] In some embodiments of this application, referring to Figures 4 and 5, the battery box 10 further includes a restraining structure 17 installed on the housing lid 11, the restraining structure 17 being used to restrain the expansion of the battery core group 20.

[0191] The restraining structure 17 is a member for restraining the expansion of the battery core group 20. As can be understood, when the battery core group 20 expands, the expansion force generated by the battery core group 20 acts on the restraining structure 17, and the restraining structure 17 can then apply a reaction force to the battery core group 20. This reaction force restrains the expansion of the battery core group 20 by resisting the expansion force of the battery core group 20. The restraining structure 17 may be a clamping structure, a pressing structure, or the like, but is not limited to these.

[0192] By adopting the above-described technology, the restraining action of the restraining structure 17 resists the expansion force of the battery core group 20, thereby limiting the expansion deformation of the battery core group 20 and effectively improving the safety performance of the battery 100.

[0193] In some embodiments of this application, referring to Figures 4 and 5, the restraining structure 17 includes two spaced beam structures 171, which work together to sandwich the battery core group 20.

[0194] In some embodiments, the two beam structures 171 are installed parallel to each other and spaced apart, and the battery core group 20 is placed between the two beam structures 171, so that the two beam structures 171 can resist the expansion force of the battery core group 20 by working together to sandwich the battery core group 20. The material of the beam structures 171 may be, but is not limited to, aluminum, aluminum alloy, iron, stainless steel, copper, etc. As can be understood, the beam structures 171 may extend along the width direction of the battery 100, in which case the two beam structures 171 are installed facing each other and spaced apart along the longitudinal direction of the battery 100. The beam structures 171 may extend along the longitudinal direction of the battery 100, in which case the two beam structures 171 are installed facing each other and spaced apart along the width direction of the battery 100. In some embodiments, the beam structure 171 may be connected to the housing lid 11, and the connection method between the beam structure 171 and the housing lid 11 may be welding, fastening, bonding, etc., but is not limited to these, and if the housing lid 11 has the first cavity 111, the beam structure 171 may be installed inside the first cavity 111.

[0195] By adopting the above-described technology, the clamping action of the two beam structures 171 resists the expansion force of the battery core group 20, thereby limiting the expansion deformation of the battery core group 20 and effectively improving the safety performance of the battery 100.

[0196] In some embodiments of this application, referring to Figures 4 and 5, the beam structure 171 extends along the width direction of the battery 100 and is connected to at least one of the upper wall 112 and the side wall 113.

[0197] The beam structure 171 extends along the width direction of the battery 100, in other words, the longitudinal direction of the beam structure 171 is parallel to the width direction of the battery 100, and two beam structures 171 may be installed opposite each other along the longitudinal direction of the battery 100, spaced apart.

[0198] In some embodiments, the beam structure 171 is connected to the upper wall 112, and the connection method between the beam structure 171 and the upper wall 112 may be welding, bonding, fastening, etc., but is not limited to these.

[0199] In some other embodiments, the beam structure 171 may be connected to a side wall 113, with one end of the beam structure 171 connected to one side wall 113 and the other end of the beam structure 171 connected to another side wall 113. The connection method between the beam structure 171 and the side wall 113 may be welding, bonding, fastening, etc., but is not limited to these.

[0200] In some other embodiments, the beam structure 171 is connected to the upper wall 112, and the beam structure 171 is further connected to the side wall 113.

[0201] By adopting the above technical proposal, the installation operation of the beam structure 171 is made easier, the two beam structures 171 can more effectively clamp the battery core group 20, the impact resistance of the housing cover 11 along the width direction of the battery 100 can be improved, and when one side of the housing cover 11 along the width direction of the battery 100 is subjected to an external impact, the impact force is effectively absorbed, effectively reducing the risk of deformation of the housing cover 11, thereby effectively reducing the risk of damage to the battery core group 20.

[0202] In some embodiments of this application, referring to Figures 4 and 5, the beam structure 171 includes an adapter 1711 and a beam body 1712, the adapter 1711 includes a matching portion 17111 and a mounting portion 17112 connected to each other, the matching portion 17111 being fitted into the shape of at least a portion of the inner wall surface of the side wall 113 and connected to each other, and the beam body 1712 being connected to the mounting portion 17112.

[0203] The adapter 1711 is a component for connecting the housing cover 11 and the beam body 1712, where the alignment portion 17111 is the part that connects to the side wall 113 of the housing cover 11, and the mounting portion 17112 is the part that connects to the beam body 1712. The fitting of the matching portion 17111 to the shape of at least a portion of the inner wall of the side wall 113 means that the shape of the side of the matching portion 17111 facing the side wall 113 matches the shape of at least a portion of the inner wall of the side wall 113. In other words, if a portion of the inner wall of the side wall 113 has a surface structure of a different shape, such as a convex surface, a curved surface, or an angular surface, the side of the matching portion 17111 facing the side wall 113 also has a corresponding surface structure, the shape of the surface structure on the side of the matching portion 17111 facing the side wall 113 is the same as the shape of the surface structure of the inner wall of this portion of the side wall 113, and the surface structure on the side of the matching portion 17111 facing the side wall 113 may be interlocked with the surface structure of the inner wall of this portion of the side wall 113 so that the matching portion 17111 can be bonded to and connected with the inner wall of this portion of the side wall 113. In some embodiments, the adapter 1711 may be a single-piece molded part, in other words, the matching portion 17111 and the mounting portion 17112 are integrally molded. For example, the adapter 1711 is a pressed part, i.e., the matching portion 17111 and the mounting portion 17112 are integrally molded using a pressing process. Alternatively, for example, the adapter 1711 is a casting, i.e., the matching portion 17111 and the mounting portion 17112 are integrally molded using a casting process. When the adapter 1711 is a single-piece molded part, the material of the matching portion 17111 is the same as the material of the mounting portion 17112. In other words, the adapter 1711 is made from a single material, and the material of the adapter 1711 may be, but is not limited to, aluminum, aluminum alloy, iron, stainless steel, copper, etc.In some other embodiments, the adapter 1711 may be a split connecting part, in other words, the matching part 17111 and the mounting part 17112 may be molded individually and then connected to each other, for example, the matching part 17111 and the mounting part 17112 may be molded using a press process and then connected to each other, or for example, the matching part 17111 and the mounting part 17112 may be molded using a cast process and then connected to each other, and the method of connection between the matching part 17111 and the mounting part 17112 may be welding, bonding, fastening, etc., and is not limited to these. When the adapter 1711 is a split connecting part, the material of the matching part 17111 and the material of the mounting part 17112 may be the same; in other words, the adapter 1711 may be made of a single material, and the material of the adapter 1711 may be aluminum, aluminum alloy, iron, stainless steel, copper, etc., but is not limited to these. The material of the matching part 17111 and the material of the mounting part 17112 may be different. For example, the material of the matching part 17111 may be aluminum alloy, and the material of the mounting part 17112 may be stainless steel. The connection method between the matching part 17111 and the side wall 113 may be welding, bonding, fastening, etc., but is not limited to these.

[0204] The beam body 1712 is a support member of the battery box 10. The beam body 1712 may also be used to support the housing lid 11. For example, the beam body 1712 may be used to support the upper wall 112 of the housing lid 11. The beam body 1712 may also be used to abut against and restrain the battery core group 20. For example, the beam body 1712 may be used as an expansion beam to resist the expansion force of the battery core group 20. The beam body 1712 may be a profiled material, that is, the beam body 1712 may be integrally formed using a linear extrusion process. The material of the beam body 1712 may be aluminum, aluminum alloy, iron, stainless steel, copper, etc., but is not limited to these. The beam body 1712 is connected to the mounting part 17112. The connection method between the beam body 1712 and the mounting part 17112 may be welding, bonding, fastening, etc., but is not limited to these.

[0205] In related technologies, in order to adapt the shape of the housing lid 11 to the actual application needs, the housing lid 11 is generally formed using a press process, and the side walls 113 of the housing lid 11 can exhibit irregular shapes depending on different application needs. The beam body 1712 is generally a profile, that is, the beam body 1712 is formed using a linear extrusion process, and the end shape of the beam body 1712 does not easily match the shape of the side walls 113 of the housing lid 11. Thus, the beam body 1712 can only be connected to the upper wall 112 of the housing lid 11, but it is difficult to connect both ends of the beam body 1712 to the side walls 113 of the housing lid 11. As a result, the connection strength between the beam body 1712 and the housing lid 11 is relatively low, and the beam body 1712 is prone to deformation or displacement after being subjected to the expansion force of the battery core group 20 or other external forces, which is detrimental to improving the reliability of the battery 100.

[0206] By adopting the above technical proposal, the matching portion 17111 can be connected to each other on at least a portion of the inner wall surface of the side wall 113, and the beam body 1712 is mounted on the mounting portion 17112 of the adapter 1711. As a result, the beam body 1712 is connected to the side wall 113 via the adapter 1711, and the connection strength between the beam body 1712 and the housing cover 11 is effectively improved, thereby effectively reducing the risk of deformation or displacement of the beam body 1712 and effectively improving the reliability of the battery 100 used.

[0207] To make it clear, the materials of the housing cover 11, the adapter 1711, and the beam body 1712 may be the same or different.

[0208] In some embodiments, referring to Figures 4 and 5, the material of the housing cover 11 is the same as the material of the adapter 1711, while the material of the beam body 1712 is different from that of the housing cover 11. For example, the housing cover 11 and the adapter 1711 are made of steel, while the beam body 1712 is made of aluminum. The adapter 1711 is welded to the housing cover 11, and the beam structure 171 further includes a first fastener 1713, connecting the beam body 1712 and the mounting portion 17112 via the first fastener 1713. Here, the first fastener 1713 may be a bolt, screw, rivet, etc., but is not limited to these.

[0209] In related technologies, when the housing cover 11 is formed using a press process, the wall thickness of the housing cover 11 is relatively small. To improve the structural strength of the housing cover 11, the housing cover 11 is generally made of high-strength steel. The beam body 1712 needs to resist the expansion force of the battery core group 20, so the beam body 1712 generally employs an aluminum molded cavity structure. However, since steel and aluminum materials are difficult to weld effectively, it becomes difficult to effectively connect the beam body 1712 and the housing cover 11, resulting in relatively poor connection strength.

[0210] By adopting the above technical proposal, the material of the housing cover 11 is the same as the material of the adapter 1711, the adapter 1711 is welded to the housing cover 11, and the material of the beam body 1712 is different from the material of the housing cover 11, and the beam body 1712 and the mounting part 17112 are connected via the first fastener 1713. As a result, the beam body 1712 can be connected to the housing cover 11 via the adapter 1711, which facilitates the assembly of the beam body 1712 and effectively improves the connection strength between the beam body 1712 and the housing cover 11, thereby effectively reducing the risk of deformation or displacement of the beam body 1712 and effectively improving the reliability of the battery 100.

[0211] In some other embodiments, referring to Figures 4 and 5, the material of the housing lid 11 is the same as the material of the adapter 1711, and the material of the beam body 1712 is different from the material of the housing lid 11. For example, the material of the housing lid 11 and the adapter 1711 is steel, while the material of the beam body 1712 is aluminum. The housing lid 11 and the adapter 1711 are pressed parts, i.e., the housing lid 11 and the adapter 1711 are formed using a press process, and the beam body 1712 is a profile, i.e., the beam body 1712 is formed using a linear extrusion process. The matching portion 17111 of the adapter 1711 is fitted into the shape of at least a portion of the inner wall of the side wall 113 of the housing lid 11 and welded to each other, and the beam structure 171 further includes a first fastener 1713, and the beam body 1712 and the mounting portion 17112 are connected via the first fastener 1713.

[0212] By adopting the above technical proposal, the material of the housing cover 11 is the same as the material of the adapter 1711, the matching portion 17111 of the adapter 1711 is fitted to the shape of at least a part of the inner wall of the side wall 113 of the housing cover 11 and welded to each other, and the material of the beam body 1712 is different from the material of the housing cover 11, and the beam body 1712 and the mounting portion 17112 are connected via the first fastener 1713, so that the beam body 1712 can be connected to the side wall 113 of the housing cover 11 via the adapter 1711, thereby facilitating the assembly of the beam body 1712 and effectively improving the connection strength between the beam body 1712 and the housing cover 11, thereby effectively reducing the risk of deformation or displacement of the beam body 1712 and effectively improving the reliability of the battery 100.

[0213] In some other embodiments, the material of the housing lid 11, the adapter 1711, and the beam body 1712 are the same, for example, the material of the housing lid 11, the adapter 1711, and the beam body 1712 is aluminum, or for example, the material of the housing lid 11, the adapter 1711, and the beam body 1712 is steel. The housing lid 11 and the adapter 1711 are pressed parts, i.e., the housing lid 11 and the adapter 1711 are formed using a press process, and the beam body 1712 is a profile, i.e., the beam body 1712 is formed using a linear extrusion process. The fitting portion 17111 of the adapter 1711 is fitted into the shape of at least a portion of the inner wall of the side wall 113 of the housing lid 11 and welded to each other, and the beam body 1712 is welded to the mounting portion 17112.

[0214] By adopting the above technical proposal, the materials of the housing cover 11, the adapter 1711, and the beam body 1712 are the same, the matching portion 17111 of the adapter 1711 is fitted to the shape of at least a portion of the inner wall of the side wall 113 of the housing cover 11 and welded to each other, and the beam body 1712 is welded to the mounting portion 17112. As a result, the beam body 1712 can be connected to the side wall 113 of the housing cover 11 via the adapter 1711, which facilitates the assembly of the beam body 1712 and effectively improves the connection strength between the beam body 1712 and the housing cover 11, thereby effectively reducing the risk of deformation or displacement of the beam body 1712 and effectively improving the reliability of the battery 100.

[0215] Of course, in other embodiments, the adapter 1711 may not be installed, and the beam body 1712 may be directly connected to the housing lid 11. For example, the material of the housing lid 11 may be the same as the material of the beam body 1712, and the beam body 1712 may be directly welded to the housing lid 11. Alternatively, for example, the material of the housing lid 11 may be different from the material of the beam body 1712, and the beam body 1712 and the housing lid 11 may be connected via fasteners.

[0216] In some embodiments of this application, referring to Figure 4, the adapter 1711 includes a first adapter 1711a and a second adapter 1711b, wherein the fitting portion 17111 of the first adapter 1711a is fitted to the shape of at least a portion of the inner wall surface of one side wall 113 and connected to each other, the fitting portion 17111 of the second adapter 1711b is fitted to the shape of at least a portion of the inner wall surface of another side wall 113 and connected to each other, one end of the beam body 1712 is connected to the mounting portion 17112 of the first adapter 1711a, and the other end of the beam body 1712 is connected to the mounting portion 17112 of the second adapter 1711b.

[0217] By adopting the above technical proposal, both ends of the beam body 1712 can be connected to the side wall 113 via the adapter 1711, further improving the connection strength between the beam body 1712 and the housing cover 11, thereby further reducing the risk of deformation or displacement of the beam body 1712.

[0218] In some other embodiments of the present application, referring to Figure 5, the alignment portion 17111 includes a first alignment portion 17111a and a second alignment portion 17111b, the first alignment portion 17111a being fitted to the shape of at least a portion of the inner wall surface of one side wall 113 and connected to one another, the second alignment portion 17111b being fitted to the shape of at least a portion of the inner wall surface of another side wall 113 and connected to one another, one end of the mounting portion 17112 being connected to the first alignment portion 17111a and the other end of the mounting portion 17112 being connected to the second alignment portion 17111b, and the beam body 1712 extending along the direction from the first alignment portion 17111a to the second alignment portion 17111b and connected to the mounting portion 17112.

[0219] By adopting the above technical proposal, one end of the mounting portion 17112 can be connected to the side wall 113 via the first alignment portion 17111a, and the other end of the mounting portion 17112 can be connected to the side wall 113 via the second alignment portion 17111b, effectively improving the connection strength between the mounting portion 17112 and the housing cover 11. Since the beam body 1712 extends along the direction from the first alignment portion 17111a to the second alignment portion 17111b, the risk of deformation or displacement of the beam body 1712 can be further reduced by increasing the connection strength between the beam body 1712 and the housing cover 11 accordingly after connecting the beam body 1712 to the mounting portion 17112.

[0220] In some embodiments of this application, referring to Figures 4 and 5, the restraint structure 17 further includes a second connecting member 172, which is connected between two beam structures 171.

[0221] The second connecting member 172 is a member for connecting two adjacent beam structures 171 and serves to limit the relative position of the two adjacent beam structures 171. For example, if an expansion phenomenon occurs in the battery core group 20, the beam structure 171 will receive the expansion force of the battery core group 20. At this time, the second connecting member 172 applies a tensile force to the beam structure 171 in the opposite direction to the expansion force of the battery core group 20, thereby canceling out the expansion force of the battery core group 20 and reducing the risk of deformation or displacement occurring in the beam structure 171. When the beam structure 171 includes an adapter 1711 and a beam body 1712, the second connecting member 172 is connected to the beam body 1712. The material of the second connecting member 172 may be aluminum, aluminum alloy, iron, stainless steel, copper, etc., but is not limited to these. The connection method between the second connecting member 172 and the beam structure 171 may be welding, bonding, fastening, etc., but is not limited to these. The second connecting member 172 may be a limit bar, limit plate, or the like, but is not limited to these.

[0222] In some embodiments, referring to Figures 4 and 5, the restraint structure 17 further includes a second fastener 173, and the second connecting member 172 and the beam structure 171 are connected via the second fastener 173. Here, the second fastener 173 may be, but is not limited to, a bolt, screw, rivet, etc.

[0223] In some embodiments, referring to Figures 4 and 5, when the second connecting member 172 is a limit bar, the number of second connecting members 172 may be multiple, and the number of second connecting members 172 may be determined according to the requirements of the actual application, for example, the number of second connecting members 172 may be two, three, four, five, six, etc. Multiple second connecting members 172 are arranged parallel to each other along the longitudinal direction of the beam structure 171, with one end of the second connecting member 172 connected to one beam structure 171 and the other end of the second connecting member 172 connected to another beam structure 171.

[0224] In some other embodiments, when the second connecting member 172 is a limit plate, the limit plate is placed between two adjacent beam structures 171 and connected between them. In some other embodiments, a cooling channel may be formed inside the second connecting member 172, and the cooling channel is used to provide a space for a cooling medium to flow and to perform heat exchange of the battery core group 20. In other words, in this embodiment, the second connecting member 172 may not only serve to limit the relative position of two adjacent beam structures 171, but may also be used as a heat exchange member for performing heat exchange of the battery core group 20.

[0225] By adopting the above technical proposal, the relative position of the two adjacent beam structures 171 is effectively restricted, thereby further reducing the risk of deformation or displacement occurring in the beam structures 171.

[0226] In some embodiments of this application, referring to Figures 4 and 5, the second connecting member 172 is connected to the side of the beam structure 171 away from the housing cover 11.

[0227] To make it clear, when the housing lid 11 includes an upper wall 112 and a side wall 113, the second connecting member 172 is connected to the side of the beam structure 171 that is away from the upper wall 112.

[0228] By adopting the above technical proposal, the risk of interference between the second connecting member 172 and the battery core group 20 is effectively reduced, and the connection between the second connecting member 172 and the beam structure 171 is facilitated.

[0229] In some embodiments of this application, referring to Figure 3, the battery 100 further includes a second thermal management member 40 which is attached between two adjacent battery cells 21.

[0230] The second thermal management member 40 is a member for performing heat exchange with the battery core group 20. The second thermal management member 40 may be a liquid cooling member, an air cooling member, a metal heat conductive member, etc., but is not limited to these.

[0231] In some embodiments, the second thermal management member 40 is a liquid cooling plate, and one surface of the second thermal management member 40 may be attached to one battery cell 21, and the other surface of the second thermal management member 40 may be attached to another battery cell 21. The battery 100 may further include a second inlet pipe and a second outlet pipe, the second inlet pipe being connected to the inlet of the second thermal management member 40, and the second outlet pipe being connected to the outlet of the second thermal management member 40, and the coolant enters the cooling channel of the second thermal management member 40 through the inlet of the second thermal management member 40 along the second inlet pipe, and is discharged to the outside along the second outlet pipe from the outlet of the second thermal management member 40, thereby circulating the coolant within the second thermal management member 40 and effectively performing heat exchange of the battery core group 20.

[0232] In some other embodiments of this application, referring to Figure 12, the battery 100 further includes a third thermal management member 50, which is installed between the battery core group 20 and the housing lid 11 and is attached to the battery core group 20.

[0233] The third thermal management member 50 is a member for performing heat exchange with the battery core group 20. The third thermal management member 50 may be a liquid cooling member, an air cooling member, a metal heat conductive member, etc., but is not limited to these.

[0234] In some embodiments, the third thermal management member 50 is a liquid cooling plate, one surface of the third thermal management member 50 may be attached to the battery core group 20, and the other surface of the third thermal management member 50 may be attached to the housing lid 11, which may be installed at intervals. The battery 100 may further include a third inlet pipe and a third outlet pipe, the third inlet pipe being connected to the inlet of the third thermal management member 50, and the third outlet pipe being connected to the outlet of the third thermal management member 50, and the coolant entering the cooling channel of the third thermal management member 50 through the inlet of the third thermal management member 50 along the third inlet pipe, and being discharged to the outside along the third outlet pipe from the outlet of the third thermal management member 50, thereby circulating the coolant within the third thermal management member 50 and effectively removing heat from the battery core group 20.

[0235] In some other embodiments of this application, the battery 100 may include at least two of a first thermal management member 30, a second thermal management member 40, and a third thermal management member 50. The first thermal management member 30 is installed between the battery core group 20 and the protective plate 14 and is attached to the battery core group 20; the second thermal management member 40 is attached between two adjacent battery cells 21; and / or the third thermal management member 50 is installed between the battery core group 20 and the housing cover 11 and is attached to the battery core group 20. The electrical lead member is installed on a portion of the housing other than the portion facing the first thermal management member 30, the second thermal management member 40, and the third thermal management member 50.

[0236] By adopting the above-mentioned technology, the heat exchange performance of battery 100 can be effectively improved, thereby effectively enhancing the safety of battery 100.

[0237] In some embodiments of this application, the battery core group 20 is bonded to the housing lid 11.

[0238] In some embodiments, an adhesive layer may be applied to the housing lid 11, the battery core group 20 may be placed on the adhesive layer, and after the adhesive layer has hardened, the battery core group 20 may be bonded to the housing lid 11.

[0239] In some other embodiments, the battery core group 20 may be placed on the housing lid 11, adhesive may be injected onto the housing lid 11, and after the adhesive layer has hardened, the battery core group 20 may be bonded to the housing lid 11.

[0240] By adopting the above-described technology, it is possible to make the force between the battery core group 20 and the housing cover 11 more uniform, and by simplifying the assembly flow between the battery core group 20 and the housing cover 11, the assembly efficiency of the battery 100 can be effectively improved.

[0241] In some embodiments of this application, referring to Figures 2 to 12, the battery box 10 includes a housing lid 11, a housing 12, a protective plate 14, a mounting assembly 16, and a restraint structure 17. The housing lid 11 and the housing 12 are connected in order along the direction of gravity of the battery 100, and the housing lid 11 and the housing 12 are used to connect a frame 200, and the battery core group 20 is connected to the housing lid 11. The housing lid 11 has a first cavity 111, and the housing 12 has a second cavity 121, and the first cavity 111 and the second cavity 121 communicate with each other to form a chamber 13, and a portion of the battery core group 20 is housed in the first cavity 111, and another portion of the battery core group 20 is housed in the second cavity 121. The housing 12 includes a first support beam 122, which extends along the longitudinal direction of the battery 100 and is located on one side along the width direction of the battery 100. The first support beam 122 includes a support beam body 1221 and an energy absorbing beam body 1222, which includes a main beam body 12221 and a first energy absorber 12222, which is connected to the side of the support beam body 1221 away from the chamber 13 and has a first energy absorbing cavity 12223, which is installed within the first energy absorbing cavity 12223, which is an energy absorbing rib, which extends along the longitudinal direction of the main beam body 12221 and is connected between two opposing walls of the main beam body 12221. The protective plate 14 is placed over the side of the housing lid 11 of the housing 12 that is facing away from it, and at least a portion of the energy absorption beam body 1222 protrudes from the protective plate 14 in the width direction of the battery 100. The protective plate 14 includes a first plate 142, a second plate 143, and a second energy absorber 144. The first plate 142 and the second plate 143 form a second energy absorption cavity 141 spaced apart along the height direction of the battery 100, and the second energy absorber 144 is installed within the second energy absorption cavity 141 and extends along the width direction of the battery 100.The second energy absorber 144 is an energy absorbing rib, which is connected between the first plate 142 and the second plate 143, and the thickness direction of the second energy absorber 144 is inclined with respect to the height direction of the battery 100, and there are multiple second energy absorbers 144, which are arranged parallel to each other along a direction perpendicular to the longitudinal direction of the second energy absorber 144, and the thickness directions of two adjacent second energy absorbers 144 are inclined in different directions with respect to the height direction of the battery 100. The mounting assembly 16 includes a support member 161 and a first connecting member 162, the support member 161 is connected to the surface of the housing lid 11 facing the battery core group 20 and extends along the width direction of the battery 100, and the first connecting member 162 is connected to the support member 161 and is used to connect the frame 200. The restraint structure 17 is installed in the first cavity 111 and is used to restrain the expansion of the battery core group 20. The restraint structure 17 includes two spaced beam structures 171 and a second connecting member 172 connected between the two beam structures 171, and the two beam structures 171 work together to clamp the battery core group 20. The beam structures 171 extend along the width direction of the battery 100 and include an adapter 1711 and a beam body 1712, the adapter 1711 includes a matching portion 17111 and a mounting portion 17112 connected to each other, the matching portion 17111 is fitted into the shape of at least a portion of the inner wall surface of the side wall 113 and connected to each other, and the beam body 1712 is connected to the mounting portion 17112.

[0242] In a second embodiment, referring to Figure 1, an embodiment of the present application provides an electric device comprising a frame and a battery 100 as described in any one of the above embodiments, wherein the housing cover 11 is connected to the frame.

[0243] To make it easier to understand, if the electric equipment is vehicle 1000, then the above frame is the frame 200 of vehicle 1000.

[0244] The electric equipment according to the embodiment of this application employs the battery 100 described in any one of the above embodiments, thereby effectively improving the range performance of the electric equipment.

[0245] As stated above, these are merely preferred embodiments of the present application and are not intended to limit it. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should all be included within the scope of protection of the present application. [Explanation of Symbols]

[0246] 1000 vehicles 100 batteries 10 Battery box 11. Case cover 111 First Cavity 112 Upper wall 113 Side wall 12 enclosures 121 Second Cavity 122 First supporting beam 1221 Support beam body 1222 Energy-absorbing beam body 12221 Main beam body 12222 First energy absorber 12223 First energy absorption cavity 123 Second supporting beam 13 Chambers 14 Protective plate 141 Second energy absorption cavity 142 First plate 143 Second plate 144 Second Energy Absorber 15. Sealant 16 Mounting Assembly 161 Support member 162 First connecting member 17 Restraint structure 171 Beam structure 1711 Adapter 1711a First adapter 1711b Second adapter 17111 Matching section 17111a First alignment section 17111b Second alignment section 17112 Mounting part 1712 Beam body 1713 First fastener 172 Second connecting member 173 Second fastener 18 connection sleeves 20 Battery core group 21 battery cells 211 cases 212 Electrode Assembly 213 Electrode terminal 30 First thermal control component 40 Second thermal management component 50 Third thermal control component 200 frames 300 Electric drive unit 400 wheels

Claims

1. It is a battery, A battery box comprising a housing lid and a housing, wherein the housing lid is placed over the housing and surrounds the housing to form a chamber, and the housing lid is used to connect an external frame, A battery characterized by including a group of battery cores housed in the chamber and connected to the housing lid.

2. The battery according to claim 1, characterized in that the housing lid has a first cavity, the housing has a second cavity, the first cavity and the second cavity communicate with each other to form the chamber, and at least a portion of the battery core group is housed in the first cavity.

3. The battery according to claim 2, characterized in that the maximum depth of the second cavity is less than the maximum depth of the first cavity, and / or the minimum depth of the second cavity is less than the maximum depth of the first cavity.

4. The battery according to claim 1, wherein the housing includes a first support beam, the first support beam includes a support beam body and an energy absorbing beam body, and the energy absorbing beam body is connected to the side of the support beam body that is facing away from the chamber.

5. The battery according to claim 4, wherein the energy absorbing beam body includes a main beam body, the main beam body is connected to the side of the support beam body facing away from the chamber, and has a first energy absorbing cavity.

6. The battery according to claim 5, wherein the energy-absorbing beam body further includes a first energy absorber, and the first energy absorber is installed in the first energy-absorbing cavity.

7. The battery according to claim 6, characterized in that the first energy absorber is an energy absorbing rib extending along the longitudinal direction of the main beam body, and the first energy absorber is connected between two opposing wall bodies of the main beam body.

8. The battery according to claim 4, characterized in that the first support beam extends along the longitudinal direction of the battery and is located on one side along the width direction of the battery.

9. The battery according to claim 4, wherein the battery box further includes a protective plate that is placed over the side of the housing facing the housing lid, and the protective plate has a second energy absorption cavity.

10. The battery according to claim 9, wherein the protective plate includes a first plate body, a second plate body, and a second energy absorber, the first plate body and the second plate body are spaced apart along the height direction of the battery to form the second energy absorption cavity, and the second energy absorber is installed in the second energy absorption cavity.

11. The battery according to claim 10, characterized in that the second energy absorber is an energy absorbing rib, and the second energy absorber is connected between the first plate and the second plate.

12. The battery according to claim 11, characterized in that the thickness direction of the second energy absorber is inclined with respect to the height direction of the battery.

13. The battery according to claim 12, wherein the number of the second energy absorbers is plurality, and the plurality of the second energy absorbers are arranged parallel to each other along a direction perpendicular to the longitudinal direction of the second energy absorber, and the thickness directions of two adjacent second energy absorbers are inclined in different directions with respect to the height direction of the battery.

14. The battery according to claim 11, characterized in that the second energy absorber extends along the width direction of the battery.

15. The battery according to claim 9, characterized in that at least a portion of the energy-absorbing beam body protrudes from the protective plate in a direction perpendicular to the longitudinal direction of the first support beam.

16. The battery according to claim 1, wherein the battery box further includes a protective plate, the protective plate is placed over the side of the housing that is facing away from the housing lid of the housing.

17. The battery according to claim 16, characterized in that the group of battery cores is connected on the protective plate.

18. The battery according to claim 16, wherein the battery box further includes a sealing material, and the sealing material is installed between the housing and the protective plate.

19. The battery according to claim 16, further comprising a first thermal management member, the first thermal management member being installed between the battery core group and the protective plate and attached to the battery core group.

20. The battery according to claim 1, characterized in that the housing is used to connect the outer frame.

21. The battery according to claim 1, wherein the battery box further includes a mounting assembly, the housing lid is connected to the mounting assembly, and the mounting assembly is used to connect the outer frame.

22. The battery according to claim 21, wherein at least a portion of the mounting assembly includes a support member and a first connecting member, the support member being connected to the housing lid, and the first connecting member being connected to the support member and used to connect the outer frame.

23. The battery according to claim 22, characterized in that the housing cover includes an upper wall, the battery core group is connected to the lower part of the upper wall, the support member is connected to the upper wall, and the first connecting member connects the support member and the upper wall to the outer frame.

24. The battery according to claim 23, characterized in that the support member is connected to the upper part of the upper wall and extends along the width direction of the battery.

25. The battery according to claim 1, wherein the battery box further includes a restraining structure installed on the housing lid, and the restraining structure is used to restrain the expansion of the battery core group.

26. The battery according to claim 25, wherein the restraint structure includes two beam structures installed at intervals, and the two beam structures cooperate to sandwich the battery core group.

27. The battery according to claim 26, characterized in that the housing cover includes a top wall and a side wall, the beam structure extends along the width direction of the battery, and the beam structure is connected to at least one of the top wall and the side wall.

28. The battery according to claim 27, wherein the beam structure includes an adapter and a beam body, the adapter includes a matching portion and a mounting portion connected to each other, the matching portion is fitted to the shape of at least a part of the inner wall surface of the side wall and connected to each other, and the beam body is connected to the mounting portion.

29. The battery according to claim 26, wherein the restraint structure further includes a second connecting member, the second connecting member being connected between two beam structures.

30. The battery according to claim 29, characterized in that the second connecting member is connected to the side of the beam structure away from the housing lid.

31. The battery core group includes a plurality of battery cells, the battery further includes a second thermal management member, the second thermal management member is attached between two adjacent battery cells, and / or The battery according to claim 1, further comprising a third thermal management member, the third thermal management member being installed between the battery core group and the housing lid and attached to the battery core group.

32. The battery according to claim 1, characterized in that the battery core group is bonded to the housing lid.

33. An electric device comprising a frame and a battery according to any one of claims 1 to 32, wherein the housing cover is connected to the frame.

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