Battery and electric device

Abstract

Provided in the embodiments of the present application are a battery and an electric device. The battery comprises a case, thermal management components, supporting members and a plurality of battery cell groups. The plurality of battery cell groups are arranged in the case, and each battery cell group comprises at least one battery cell. In a first direction, the battery cell groups are provided on both sides of each thermal management component, and the thermal management components are configured to manage the temperature of battery cells. The supporting members are arranged in the case and are connected to the case. In the first direction, the supporting members and the thermal management components are stacked, and the supporting members support the thermal management components. The battery can reduce the risk that the battery cell groups on lower sides of the thermal management components are damaged due to the fact that said battery cell groups bear the gravity of the battery cell groups on upper sides of the thermal management components, thereby reducing the risk of the battery cells deforming and short-circuiting due to damage, and thus improving the reliability of the battery.

Description

Batteries and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420590820.X, filed on March 26, 2024, entitled “Batteries and Electrical Equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0004] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools.

[0005] In the development of battery technology, in addition to improving the electrochemical performance of batteries, battery reliability has always been a key performance evaluation of batteries. However, how to improve battery reliability is an urgent problem to be solved in battery technology.

[0006] Summary of the Invention

[0007] The present application provides a battery and an electrical device, which can improve the reliability of the battery.

[0008] In a first aspect, an embodiment of the present application provides a battery, comprising a casing, a thermal management component, a support, and a plurality of battery cell groups; the plurality of battery cell groups are arranged in the casing, and the battery cell groups include at least one battery cell; along a first direction, battery cell groups are arranged on both sides of the thermal management component, and the thermal management component is used to manage the temperature of the battery cells; the support member is arranged in the casing and connected to the casing, and along the first direction, the support member and the thermal management component are stacked, and the support member supports the thermal management component.

[0009] In the above technical solution, the battery cell group is arranged in a box body, and the box body can provide protection for the battery cell group and improve the reliability of the battery cell group. Battery cell groups are arranged on both sides of the thermal management component along the first direction. The thermal management component can simultaneously manage the temperature of the battery cell groups on both sides thereof, thereby improving the utilization rate of the thermal management component. The support member is arranged in the box body and connected to the box body. The support member supports the thermal management component. The thermal management component can support the battery cell group located on the upper side of the thermal management component. The gravity of the battery cell group located on the upper side of the thermal management component can be transmitted to the support member through the thermal management component, and then transmitted to the box body by the support member, thereby reducing the risk of the battery cell group on the lower side of the thermal management component being damaged due to the gravity of the battery cell group on the upper side of the thermal management component being borne by the battery cell group on the lower side of the thermal management component, thereby reducing the risk of the battery cell group on the lower side of the thermal management component being damaged, deformed, or short-circuited, thereby improving the reliability of the battery.

[0010] In some embodiments, the battery further includes an adhesive layer connecting the thermal management component and the support member. The adhesive layer can secure the thermal management component to the support member, reducing the risk of the thermal management component shaking in the box.

[0011] In some embodiments, a receiving groove is formed on a side of the thermal management component facing the support member along the first direction, and at least a portion of the adhesive layer is received in the receiving groove. The receiving groove can accommodate the adhesive layer, which, on the one hand, reduces the risk of adhesive layer overflow; on the other hand, it increases the contact area between the adhesive layer and the thermal management component, improving the adhesion strength between the thermal management component and the support member, and allows direct contact between the heat pipe component and the support member, which further facilitates the thermal management component in managing the temperature of the battery cell group located below the thermal management component.

[0012] In some embodiments, the battery further includes a locking member configured to lock the thermal management component and the support member. The locking member can secure the thermal management component to the support member, thereby reducing the risk of the thermal management component shaking in the case.

[0013] In some embodiments, the thermal management component is provided with a first mounting hole, the support member is provided with a second mounting hole, and the locking accessory is inserted through the first mounting hole and the second mounting hole. By providing the first mounting hole on the thermal management component and the second mounting hole on the support member, the thermal management component and the locking accessory can be positioned through the first mounting hole and the second mounting hole, and the thermal management component and the locking accessory can be locked by inserting the locking accessory through the first mounting hole and the second mounting hole, thereby achieving rapid locking of the thermal management component and the support member with the locking accessory.

[0014] In some embodiments, along the second direction, a plurality of first mounting holes are provided on at least one side of the thermal management component, and a plurality of second mounting holes are provided on at least one side of the support member, and the plurality of first mounting holes and the plurality of second mounting holes are all spaced apart along the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; wherein the number of second mounting holes is greater than the number of first mounting holes. By providing the first mounting holes on at least one side of the thermal management component along the second direction and the second mounting holes on at least one side of the support member along the second direction, the connection between the thermal management component and the support member is stabilized. By providing the plurality of first mounting holes and second mounting holes spaced apart along the third direction, the connection between the thermal management component and the support member along the third direction is made more stable. By providing the number of second mounting holes more than the number of first mounting holes, the first mounting hole can select different second mounting holes for positioning, so that the thermal management component can be installed to different positions on the support member, and the fit is more flexible.

[0015] In some embodiments, a cavity is formed inside the support member. The provision of the cavity can reduce the weight of the support member, reduce consumables, and save costs, and can also increase the compressive strength of the support member and improve the supporting capacity of the support member.

[0016] In some embodiments, the battery includes a locking accessory and a reinforcement member, the locking accessory is configured to lock the thermal management component and the support member, the support member is provided with a second mounting hole for the locking accessory to pass through, and the second mounting hole is connected to the cavity. The reinforcement member is at least partially accommodated in the cavity, the reinforcement member abuts against two opposite cavity walls of the cavity along a first direction, and a third mounting hole is provided at a position of the reinforcement member corresponding to the second mounting hole, and the third mounting hole cooperates with the locking accessory. By providing the locking accessory to lock the thermal management component and the support member, the connection strength between the thermal management component and the support member can be enhanced. By providing the reinforcement member, the strength of the support member can be strengthened, and by locking the locking accessory to the third mounting hole of the reinforcement member, the locking strength of the locking accessory can be improved, the risk of the locking accessory falling off can be reduced, and the connection stability between the thermal management component and the support member can be improved, thereby improving the structural stability of the battery.

[0017] In some embodiments, the thermal management component has a first surface facing away from the support member along a first direction, and the battery cell pack is bonded to the first surface. The thermal management component is provided with a flange portion, which is arranged along the edge of the thermal management component and protrudes from the first surface. By bonding the battery cell pack to the first surface of the thermal management component, the connection strength between the battery cell pack and the thermal management component can be improved. By providing the flange portion at the edge of the thermal management component, the risk of adhesive bonding the battery cell pack overflowing outside the thermal management component and contaminating other components within the housing can be reduced.

[0018] In some embodiments, a thermal management component includes a first plate and a second plate. The second plate is positioned between the first plate and a support member along a first direction. A groove is formed on a side of the second plate facing the first plate. The first plate is connected to the second plate and covers the notch of the groove, so that the groove forms a flow channel within the thermal management component. By providing the groove on the side of the second plate facing the first plate, the groove forms a flow channel for fluid circulation after the first and second plates are connected, thereby facilitating the fabrication of the thermal management component.

[0019] In some embodiments, the battery further comprises an adhesive layer connecting the second plate and the support member. Along the first direction, a protrusion is formed on the side of the second plate facing the support member at a position corresponding to the groove, and a receiving groove is formed on the side of the second plate facing the support member between two adjacent protrusions, and at least a portion of the adhesive layer is received in the receiving groove. By forming a protrusion on the side of the second plate facing the support member and a receiving groove between adjacent protrusions, the groove and the receiving groove can be formed at one time when processing the second plate. By rationally utilizing the receiving groove generated when processing the groove, the adhesive layer can be filled in the receiving groove to improve the connection strength between the second plate and the support member.

[0020] In some embodiments, along a first direction, the first plate has a first surface facing away from the second plate, and a battery cell group is adhered to the first surface. The first plate is provided with an edge portion, which is provided along the edge of the first plate and protrudes from the first surface. By adhering the battery cell group to the first surface of the first plate, the connection strength between the battery cell group and the first plate can be improved. By adhering the battery cell group to the first surface of the first plate, the connection strength between the battery cell group and the first plate can be improved. By providing the edge portion at the edge of the first plate, the risk of adhesive used to adhere the battery cell group overflowing onto the outside of the first plate and contaminating other components in the box can be reduced.

[0021] In some embodiments, the first plate is connected to the second plate by welding. By welding the first plate and the second plate, the connection between the first plate and the second plate can be made more stable.

[0022] In some embodiments, the groove is stamped and formed on the second plate. The groove is formed by stamping the second plate, and the forming method of the groove is simple and the forming difficulty is low.

[0023] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery provided by any embodiment of the first aspect, wherein the battery is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0025] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0026] FIG2 is an exploded view of a battery provided in some embodiments of the present application;

[0027] FIG3 is a schematic structural diagram of a battery provided in some embodiments of the present application;

[0028] FIG4 is an exploded view of a thermal management component and a support member provided in some embodiments of the present application;

[0029] FIG5 is a schematic structural diagram of a thermal management component and a support member provided in some embodiments of the present application;

[0030] FIG6 is a cross-sectional view AA in FIG5;

[0031] FIG7 is a partial enlarged view of area B in FIG6 ;

[0032] FIG8 is a schematic structural diagram of a thermal management component provided in some embodiments of the present application;

[0033] FIG9 is an exploded view of a thermal management component provided by some embodiments of the present application;

[0034] FIG10 is a schematic structural diagram of a thermal management component provided in some other embodiments of the present application.

[0035] Icons: 1-support member; 11-second mounting hole; 12-cavity; 121-cavity wall; 2-thermal management component; 21-first mounting hole; 22-first surface; 23-edge portion; 24-first plate; 25-second plate; 251-groove; 252-accommodating groove; 253-protrusion; 26-protrusion; 3-box; 31-first part; 32-second part; 4-battery cell group; 41-battery cell; 5-locking accessory; 6-reinforcement member; 61-third mounting hole; 7-adhesive layer; 10-battery; 20-controller; 30-motor; 100-vehicle; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0038] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0041] The term "plurality" used in this application refers to two or more (including two).

[0042] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0043] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0044] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0045] As an example, the battery cells may be cylindrical, prismatic, soft-pack or other shaped battery cells. Prismatic battery cells include but are not limited to square-shell, blade-shaped, and polygonal batteries, such as hexagonal batteries.

[0046] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0047] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0048] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.

[0049] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0050] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0051] Batteries have outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide adaptability and low self-discharge coefficient. They are an important part of the development of new energy today.

[0052] A battery typically includes a housing, a thermal management component housed within the housing, and multiple battery cell groups. Each battery cell group includes at least one battery cell, and the thermal management component is used to manage the temperature of the battery cells. Within the housing, multiple battery cell groups can be arranged in a variety of ways. For example, multiple battery cell groups can be arranged horizontally on the thermal management component, or multiple battery cell groups can be stacked in the direction of gravity, with the thermal management component positioned between two adjacent battery cells in the direction of gravity.

[0053] In batteries with stacked cell groups along the direction of gravity, the battery groups on the lower layer need to withstand the weight of the thermal management components and the battery groups above them. In many battery application scenarios, the internal structure of the battery is easily damaged, resulting in low battery reliability. Taking the battery of a heavy-duty truck as an example, when installing a heavy-duty truck battery, because the vehicle requires many battery groups to maintain battery demand and performance, and the location of the battery installation on the vehicle is limited, it is often necessary to use batteries with battery groups stacked along the direction of gravity. During normal driving or construction operations of a heavy-duty truck, the battery is prone to bumps, and the battery is heavy, so the battery groups on the lower layer are easily damaged, resulting in low battery reliability.

[0054] Based on the above considerations, in order to improve the problem of low battery reliability, an embodiment of the present application provides a battery, which has a support member connected to the box body inside the box body, the support member supports the thermal management component, and battery cell groups are set on both sides of the thermal management component.

[0055] By providing a support member connected to the box and supporting the thermal management component with the support member, the thermal management component supporting the battery cell group can transfer gravity to the support member, and then directly transfer it to the box by the support member, thereby reducing the risk of the battery cell group on the thermal management component crushing the battery cell group below the thermal management component and improving the reliability of the battery.

[0056] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0057] Electrically powered equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be fuel-powered, gas-powered, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles. Spacecraft include aircraft, rockets, space shuttles, and spacecraft. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0058] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0059] Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle 100 provided in some embodiments of the present application. A battery 10 is disposed within the vehicle 100. Battery 10 can be located at the bottom, front, or rear of the vehicle 100. Battery 10 can be used to power the vehicle 100, for example, as the operating power source of the vehicle 100.

[0060] The vehicle 100 may further include a controller 20 and a motor 30 . The controller 20 is used to control the battery 10 to supply power to the motor 30 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 100 .

[0061] In some embodiments of the present application, the battery 10 can serve not only as an operating power source for the vehicle 100 , but also as a driving power source for the vehicle 100 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100 .

[0062] Please refer to Figure 2, which is an exploded view of a battery 10 provided in some embodiments of the present application. Battery 10 includes a housing 3, a thermal management component 2, and multiple battery cell groups 4. Multiple battery cell groups 4 are disposed within housing 3, each including at least one battery cell 41.

[0063] The housing 3 houses the battery cells 41 and provides space for the battery cell pack 4. The housing 3 can be part of the structure of the electrical device. For example, in an embodiment where the electrical device is a vehicle 100, the housing 3 can be part of the chassis structure of the vehicle 100. The housing 3 can be made of copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0064] In some embodiments, the case 3 may include a first portion 31 and a second portion 32, which cover each other to define a storage space for accommodating the battery cell 41. The first portion 31 and the second portion 32 may be in various shapes, such as a rectangular parallelepiped, a cylinder, etc. The first portion 31 may be a hollow structure with one side open, and the second portion 32 may be a hollow structure with one side open, and the open side of the second portion 32 covers the open side of the first portion 31, thereby forming a case 3 with a storage space. Alternatively, the first portion 31 may be a hollow structure with one side open, and the second portion 32 may be a plate-like structure, and the second portion 32 covers the open side of the first portion 31, thereby forming a case 3 with a storage space. The first portion 31 and the second portion 32 may be sealed by a sealing element, which may be a sealing ring, a sealant, etc.

[0065] The thermal management component 2 can be a component with both heating and cooling functions. When the temperature of the battery cell group 4 is too high, the thermal management component 2 cools the battery cell group 4; when the temperature of the battery cell group 4 is too low, the thermal management component 2 heats the battery cell group 4. The thermal management component 2 can be a water-cooled plate, a heating plate, or the like. By regulating the temperature of the battery cell group 4 through the thermal management component 2, the battery cell group 4 can operate in a suitable environment, reducing the risk of thermal runaway of the battery 10 and improving the operating efficiency and reliability of the battery 10.

[0066] As an example, the thermal management component 2 is used to contain a fluid to adjust the temperature of the battery cell 41. For example, the thermal management component 2 is a water cooling plate.

[0067] The battery cell group 4 may include only one battery cell 41 or multiple battery cells 41. When the battery cell group 4 includes multiple battery cells 41, the multiple battery cells 41 may be connected in series, in parallel, or in a mixed connection. Mixed connection refers to a combination of series and parallel connections among the multiple battery cells 41. The multiple battery cell groups 4 are first connected in series, in parallel, or in a mixed connection to form the battery cell group 4. The multiple battery cell groups 4 are then connected in series, in parallel, or in a mixed connection to form a single unit and housed within the housing 3. The multiple battery cell groups 4 may be arranged horizontally, along the direction of gravity, or with some battery cell groups 4 arranged horizontally and others along the direction of gravity. A single thermal management component 2 may manage the temperature of one battery cell group 4 or multiple battery cell groups 4. For example, multiple battery cell groups 4 may be arranged horizontally with a thermal management component 2 positioned between adjacent battery cell groups 4. Another example is when multiple battery cell groups 4 are arranged along the direction of gravity with a thermal management component 2 positioned between adjacent battery cell groups 4.

[0068] Please refer to Figure 3, which is a schematic diagram of the structure of a battery 10 provided in some embodiments of the present application. The battery 10 includes a support member 1, a thermal management component 2, a housing 3, and a plurality of battery cell groups 4. The plurality of battery cell groups 4 are arranged in the housing 3, and the battery cell group 4 includes at least one battery cell 41. Along the first direction X, battery cell groups 4 are provided on both sides of the thermal management component 2, and the thermal management component 2 is used to manage the temperature of the battery cell 41. The support member 1 is arranged in the housing 3 and connected to the housing 3. Along the first direction X, the support member 1 and the thermal management component 2 are stacked, and the support member 1 supports the thermal management component 2.

[0069] The number of support members 1 may be one or more. The support member 1 may be a plate-like structure or a frame structure. The support member 1 may be fixedly connected to the box body 3, for example, the support member 1 is welded inside the box body 3; or the support member 1 and the box body 3 may be detachably connected, for example, the support member 1 is fastened to the box body 3 by bolts. The thermal management component 2 may be in direct contact with the support member 1, for example, the thermal management component 2 is placed on the support member 1, and the support member 1 supports the thermal management component 2; or the thermal management component 2 may be indirectly connected to the support member 1, for example, an adhesive layer is provided between the support member 1 and the thermal management component 2, and the support member 1 is connected to the thermal management component 2 through the adhesive layer. The thermal management component 2 may be located outside the support member 1; or the support member 1 covers at least a portion of the thermal management component 2, and the support member 1 supports the thermal management component 2. The support member 1 may be made of metal, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0070] The support member 1 and thermal management component 2 are stacked along a first direction X, with the support member 1 supporting the thermal management component 2. Specifically, the support member 1 is positioned below the thermal management component 2, supporting the thermal management component 2 and bearing the weight of the thermal management component 2 as well as the weight of the battery pack 4 located above the thermal management component 2. The first direction X may be parallel to the direction of gravity, with the weight of the thermal management component 2 being transmitted downward to the support member 1, and then from the support member 1 to the housing 3. It is understood that the support member 1 is positioned between the battery pack 4 located above the thermal management component 2 and the battery pack 4 located below the thermal management component 2.

[0071] For the battery cell group 4 located on the upper side of the thermal management component 2, the battery cell group 4 can be simply placed on the thermal management component 2, or it can be connected to the thermal management component 2, for example, the battery cell group 4 is bonded to the thermal management component 2; for the electrode assembly located on the lower side of the thermal management component 2, there can be a gap between the battery cell group 4 and the thermal management component 2, or it can be in contact with the thermal management component 2.

[0072] In the embodiment of the present application, the battery cell group 4 is disposed within the housing 3, which provides protection for the battery cell group 4 and improves the reliability of the battery cell group 4. Battery cell groups 4 are disposed on both sides of the thermal management component 2 along the first direction X. The thermal management component 2 can simultaneously manage the temperature of the battery cell groups 4 on both sides, thereby improving the utilization rate of the thermal management component 2. A support member 1 is disposed within and connected to the housing 3. The support member 1 supports the thermal management component 2 and supports the battery cell group 4 located above the thermal management component 2. The weight of the battery cell group 4 located above the thermal management component 2 can be transmitted to the support member 1 through the thermal management component 2 and then to the housing 3. This reduces the risk of damage to the battery cell group 4 below the thermal management component 2 due to the weight of the battery cell group 4 above the thermal management component 2 being borne by the battery cell group 4 below the thermal management component 2. This reduces the risk of damage, deformation, or short circuiting of the battery cells 41, thereby improving the reliability of the battery 10.

[0073] In some embodiments, please refer to Figure 4, which is an exploded view of the thermal management component 2 and the support member 1 provided in some embodiments of the present application. The battery 10 further includes an adhesive layer 7, which connects the thermal management component 2 and the support member 1.

[0074] The adhesive layer 7 can be formed by coating glue on the thermal management component 2, or can be an adhesive sheet coated with glue. The glue of the adhesive layer 7 can be shadowless glue, glass glue, polyacrylic hot melt glue, etc.

[0075] By providing an adhesive layer 7 between the thermal management component 2 and the support member 1 , the adhesive layer 7 can fix the thermal management component 2 to the support member 1 , thereby reducing the risk of the thermal management component 2 shaking in the box 3 .

[0076] In some embodiments, referring to Figures 5-7 , Figure 5 is a schematic diagram of the structure of the thermal management component 2 and the support member 1 provided in some embodiments of the present application; Figure 6 is a cross-sectional view taken along line AA in Figure 5 ; and Figure 7 is a partial enlarged view of area B in Figure 6 . Battery 10 further includes a locking member 5 configured to lock the thermal management component 2 and the support member 1.

[0077] The locking member 5 is used to lock the thermal management component 2 and the support member 1. When the locking member 5 locks the thermal management component 2 and the support member 1, the thermal management component 2 and the support member 1 cannot move relative to each other. The thermal management component 2 and the support member 1 can be locked together by the locking member 5 alone, or they can be fixed together by the adhesive layer 7 and the locking member 5. The locking member 5 can be a bolt, screw, locking pin, etc.

[0078] The thermal management component 2 can be fixed to the support 1 by the locking accessory 5 , thereby reducing the risk of the thermal management component 2 shaking in the box 3 .

[0079] In some embodiments, please continue to refer to Figures 5 to 7. The thermal management component 2 is provided with a first mounting hole 21, the support member 1 is provided with a second mounting hole 11, and the locking member 5 is passed through the first mounting hole 21 and the second mounting hole 11.

[0080] The number of the first mounting hole 21 can be one or more. The first mounting hole 21 can be opened at the center of the thermal management component 2 or at the edge of the thermal management component 2.

[0081] The number of the second mounting holes 11 can be one or more. The second mounting holes 11 can be opened at the center of the support member 1 or at the edge of the support member 1.

[0082] The number of the first mounting holes 21 and the number of the second mounting holes 11 may be the same or different.

[0083] Taking the locking accessory 5 as a screw as an example, the first mounting hole 21 can be a cylindrical hole, and the second mounting hole 11 can be a threaded hole. The screw passes through the first mounting hole 21 and is screwed to the second mounting hole 11 to lock the thermal management component 2 and the support member 1; taking the locking accessory 5 as a bolt as an example, the first mounting hole 21 and the second mounting hole 11 can be cylindrical holes. After passing through the first mounting hole 21 and the second mounting hole 11, the locking accessory 5 cooperates with the nut to lock the thermal management component 2 and the support member 1.

[0084] By setting a first mounting hole 21 on the thermal management component 2 and a second mounting hole 11 on the support member 1, the thermal management component 2 and the locking accessory 5 can be positioned through the first mounting hole 21 and the second mounting hole 11, and the thermal management component 2 and the locking accessory 5 are locked by passing the locking accessory 5 through the first mounting hole 21 and the second mounting hole 11, so that the locking accessory 5 can quickly lock the thermal management component 2 and the support member 1.

[0085] In some embodiments, referring to Figures 5-7 , along the second direction Y, a plurality of first mounting holes 21 are provided on at least one side of the thermal management component 2, and a plurality of second mounting holes 11 are provided on at least one side of the support member 1. The plurality of first mounting holes 21 and the plurality of second mounting holes 11 are spaced apart along the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The number of second mounting holes 11 is greater than the number of first mounting holes 21.

[0086] The first mounting holes 21 may be provided on only one side of the thermal management component 2 along the second direction Y, or on both sides of the thermal management component 2 along the second direction Y. The second mounting holes 11 may be provided on only one side of the support member 1 along the second direction Y, or on both sides of the support member 1 along the second direction Y. Along the third direction Z, the spacing between the first mounting holes 21 may be the same or different; the spacing between the second mounting holes 11 may be the same or different.

[0087] As an example, along the second direction Y, a plurality of first mounting holes 21 are provided on both sides of the thermal management component 2, and a plurality of second mounting holes 11 are provided on both sides of the support member 1. The first mounting holes 21 and the second mounting holes 11 are spaced apart along the first direction X. The plurality of first mounting holes 21 are spaced apart along the third direction Z. The plurality of second mounting holes 11 are spaced apart along the third direction Z. The number of second mounting holes 11 is greater than the number of first mounting holes 21. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0088] By providing a first mounting hole 21 on at least one side of the thermal management component 2 along the second direction Y and a second mounting hole 11 on at least one side of the support member 1 along the second direction Y, the connection between the thermal management component 2 and the support member 1 is stabilized. By providing a plurality of first mounting holes 21 and second mounting holes 11 spaced apart along the third direction Z, the connection between the thermal management component 2 and the support member 1 along the third direction Z is further stabilized. By providing a greater number of second mounting holes 11 than first mounting holes 21, the first mounting holes 21 can be positioned with different second mounting holes 11, thereby enabling the thermal management component 2 to be mounted to different positions on the support member 1, providing greater flexibility.

[0089] In some embodiments, referring to FIG. 5 to FIG. 7 , a cavity 12 is formed inside the support member 1 .

[0090] The cavity 12 may be completely disposed inside the support member 1 and sealed inside the support member 1 ; or the cavity 12 may pass through the surface of the support member 1 and communicate with the outside.

[0091] By forming a cavity 12 inside the support member 1, the provision of the cavity 12 can, on the one hand, reduce the weight of the support member 1, reduce consumables, and save costs; on the other hand, it can improve the compressive strength of the support member 1 and improve the supporting capacity of the support member 1.

[0092] Continuing with reference to Figures 6 and 7 , in some embodiments, the battery 10 includes a locking member 5 and a reinforcement member 6. The locking member 5 is configured to lock the thermal management component 2 and the support member 1. The support member 1 is provided with a second mounting hole 11 for the locking member 5 to pass through, and the second mounting hole 11 is in communication with the cavity 12. The reinforcement member 6 is at least partially accommodated in the cavity 12, and the reinforcement member 6 abuts against two opposing cavity walls 121 of the cavity 12 along the first direction X. The reinforcement member 6 is provided with a third mounting hole 61 at a position corresponding to the second mounting hole 11, and the third mounting hole 61 cooperates with the locking member 5.

[0093] The entire reinforcement member 6 may be accommodated in the cavity 12 , or only a portion of the reinforcement member 6 may be accommodated in the cavity 12 .

[0094] The third mounting hole 61 cooperates with the locking attachment 5 to enable the locking attachment 5 to lock the thermal management component 2 and the support member 1. The locking attachment 5 can have various structures. For example, the locking attachment 5 can be a locking pin, which passes through the first mounting hole 21 and the second mounting hole 11 and forms an interference fit with the third mounting hole 61 to lock the thermal management component 2 and the support member 1. In another example, the locking attachment 5 can be a screw, and the third mounting hole 61 can be a threaded hole. The locking attachment 5 passes through the first mounting hole 21 and the second mounting hole 11 and forms a threaded fit with the third mounting hole 61. It should be noted that when the locking attachment 5 is a screw, the second mounting hole 11 can be a cylindrical hole or a threaded hole that is threadedly connected to the screw.

[0095] By providing a locking member 5 to lock the thermal management component 2 and the support member 1, the connection strength between the thermal management component 2 and the support member 1 can be enhanced. By providing a reinforcement member 6, the strength of the support member 1 can be strengthened. By locking the locking member 5 to the third mounting hole 61 of the reinforcement member 6, the locking strength of the locking member 5 can be improved, the risk of the locking member 5 falling off can be reduced, and the connection stability between the thermal management component 2 and the support member 1 can be improved, thereby improving the structural stability of the battery 10.

[0096] In some embodiments, please refer to Figure 8, which is a schematic diagram of the structure of a thermal management component 2 provided in some embodiments of the present application. Along a first direction X, the thermal management component 2 has a first surface 22 facing away from the support member 1. The battery cell group 4 is bonded to the first surface 22. The thermal management component 2 is provided with an edge portion 23, which is arranged along the edge of the thermal management component 2 and protrudes from the first surface 22.

[0097] The first surface 22 is a surface of the thermal management component 2 used to support the battery cell group 4. The first surface 22 can be a curved surface or a flat surface.

[0098] The edge portion 23 protruding from the first surface 22 means that at least a portion of the edge portion 23 protrudes from the first surface 22 in a direction away from the support member 1. The edge portion 23 can be a closed structure extending along the edge of the thermal management component 2, that is, the end ends of the edge portion 23 are connected, or it can be a non-closed structure that does not extend along the edge of the thermal management component 2, that is, the end ends of the edge portion 23 are not connected.

[0099] As an example, in the embodiment shown in FIG. 8 , the edge portion 23 is a closed structure.

[0100] The edge portion 23 can be a continuous frame-shaped protrusion 253, which is arranged around the periphery of the battery cell group 4, or it can be a plurality of discontinuous protrusions 253, which are arranged around the periphery of the battery cell group 4, to appropriately prevent the glue layer between the battery cell group 4 and the first surface 22 from overflowing to other components in the box body 3.

[0101] By adhering the battery pack 4 to the first surface 22 of the thermal management component 2, the connection strength between the battery pack 4 and the thermal management component 2 can be improved. By providing an edge portion 23 at the edge of the thermal management component 2, the edge portion 23 can be arranged around the battery pack 4, thereby reducing the risk of the adhesive adhering the battery pack 4 overflowing outside the thermal management component 2 and contaminating other components within the housing 3.

[0102] In some embodiments, please refer to Figure 9, which is an exploded view of a thermal management component 2 provided in some embodiments of the present application. The thermal management component 2 includes a first plate 24 and a second plate 25. Along a first direction X, the second plate 25 is located between the first plate 24 and the support member 1. A groove 251 is formed on the side of the second plate 25 facing the first plate 24. The first plate 24 is connected to the second plate 25 and covers the notch of the groove 251, so that the groove 251 forms a flow channel within the thermal management component 2.

[0103] The entire first plate 24 may be indirectly connected to the support member 1 with the second plate 25 provided between the first plate 24 and the support member 1 , or part of the first plate 24 may be directly connected to the support member 1 .

[0104] By providing a groove 251 on the side of the second plate 25 facing the first plate 24 , after the first plate 24 and the second plate 25 are connected, the groove 251 can form a flow channel for fluid circulation, making the thermal management component 2 easy to process.

[0105] In some embodiments, please refer to Figure 10, which is a schematic diagram of the structure of the thermal management component 2 provided in some other embodiments of the present application. Along the first direction X, the thermal management component 2 has a receiving groove 252 formed on the side facing the support member 1, and at least a portion of the adhesive layer 7 is received in the receiving groove 252.

[0106] The adhesive layer 7 may be entirely contained within the receiving groove 252, with the support member 1 connected to the thermal management component 2 by contacting the adhesive layer 7 within the receiving groove 252. Alternatively, a portion of the adhesive layer 7 may be contained within the receiving groove 252, with the remaining portion located outside the receiving groove 252, with the support member 1 connected to the thermal management component 2 by contacting the adhesive layer 7 inside and outside the receiving groove 252. The adhesive layer 7 may completely fill the receiving groove 252, or only a portion of the adhesive layer 7 may fill a portion of the receiving groove 252.

[0107] The accommodating groove 252 may be a continuous groove body, and the accommodating groove 252 is distributed on the side of the thermal management component 2 facing the support member 1; or the accommodating groove 252 may be a plurality of groove bodies, and the plurality of groove bodies are arranged at intervals on the side of the thermal management component 2 facing the support member 1.

[0108] In the above embodiment, the accommodating groove 252 can accommodate the adhesive layer 7, which on the one hand can reduce the risk of overflow of the adhesive layer 7; on the other hand, it can increase the contact area between the adhesive layer 7 and the thermal management component 2, improve the bonding strength between the thermal management component 2 and the support 1, and realize direct contact between the heat pipe component and the support 1, which is more conducive to the thermal management component 2 managing the temperature of the battery cell group 4 located on the lower side of the thermal management component 2.

[0109] In some embodiments, see Figures 9 and 10. The battery 10 further includes an adhesive layer 7 connecting the second plate 25 and the support member 1. Along the first direction X, a protrusion 253 is formed on the side of the second plate 25 facing the support member 1 at a position corresponding to the groove 251. A receiving groove 252 is formed on the side of the second plate 25 facing the support member 1, located between two adjacent protrusions 253. At least a portion of the adhesive layer 7 is received in the receiving groove 252.

[0110] As an example, as shown in Figures 9 and 10, a groove 251 is provided on the side of the second plate body 25 facing the first plate body 24, and a protrusion 253 is provided on the side of the second plate body 25 facing away from the first plate body 24. The protrusion 253 and the groove 251 are provided correspondingly, and the accommodating groove 252 is located between two adjacent protrusions 253.

[0111] By setting a protrusion 253 on the side of the second plate body 25 facing the support member 1, and forming a receiving groove 252 between adjacent protrusions 253, when processing the second plate body 25, the groove 251 and the receiving groove 252 can be formed at one time. The receiving groove 252 generated when processing the groove 251 can be reasonably utilized, and the adhesive layer 7 can be filled in the receiving groove 252 to improve the connection strength between the second plate body 25 and the support member 1.

[0112] In some embodiments, referring to FIG. 8 , the first plate 24 has a first surface 22 facing away from the second plate 25 along a first direction X. The battery cell group 4 is bonded to the first surface 22. The first plate 24 has an edge portion 23 disposed along an edge of the first plate 24 and protruding from the first surface 22.

[0113] The first surface 22 is a surface of the first plate 24 used to support the battery cell group 4. The first surface 22 can be a curved surface or a flat surface.

[0114] The edge portion 23 can be a closed structure extending along the edge of the first plate body 24, and the two ends of the edge portion 23 are connected, or it can be a non-closed structure not extending along the edge of the first plate body 24, and the two ends of the edge portion 23 are not connected.

[0115] As an example, as shown in Figure 8, two protrusions 26 are connected to the edge of the first plate body 24. After the first plate body 24 and the second plate body 25 form a flow channel, the flow channel has a liquid inlet and a liquid outlet. The two protrusions 26 are respectively located on the upper side of the liquid inlet and the liquid outlet. The edge portion 23 is arranged along the edge of the outer contour jointly defined by the protrusions 26 and the first plate body 24, and the edge portion 23 of the closed structure is formed.

[0116] By adhering the battery cell group 4 to the first surface 22 of the first plate 24, the connection strength between the battery cell group 4 and the first plate 24 can be improved. By adhering the battery cell group 4 to the first surface 22 of the first plate 24, the connection strength between the battery cell group 4 and the first plate 24 can be improved. By providing a rim portion 23 at the edge of the first plate 24, the rim portion 23 can be arranged around the battery cell group 4, thereby reducing the risk of the adhesive adhering the battery cell group 4 overflowing onto the outside of the first plate 24 and contaminating other components within the housing 3.

[0117] In some embodiments, the first plate 24 and the second plate 25 are connected by welding.

[0118] Welding can be brazing, laser welding, gas welding, etc.

[0119] By welding the first plate body 24 and the second plate body 25 , the connection between the first plate body 24 and the second plate body 25 can be made more stable.

[0120] In some embodiments, the groove 251 is stamped and formed on the second plate 25 .

[0121] The second plate body 25 is a stamped part. While the groove 251 is punched out on the first surface 22 of the second plate body 25 , a protrusion 253 corresponding to the groove 251 can be obtained on the second surface of the second plate body 25 opposite to the first surface 22 .

[0122] The groove 251 is formed by punching the second plate 25 , so that the forming method of the groove 251 is simple and the forming difficulty is low.

[0123] In the embodiment where the protrusion 253 is formed on the second plate 25 , the protrusion 253 can be correspondingly formed by punching the groove 251 on the second plate 25 , thereby reducing the difficulty of forming the protrusion 253 .

[0124] An embodiment of the present application provides an electrical device, including the battery 10 provided in any one of the above embodiments, and the battery 10 is used to provide electrical energy to the electrical device.

[0125] The embodiment of the present application provides a battery 10, which includes a housing 3, a support member 1, a thermal management component 2, and a plurality of battery cell groups 4. The support member 1 is disposed within the housing 3 and connected to the housing 3. The thermal management component 2 is disposed above the support member 1. The upper side of the thermal management component 2 carries the battery cell group 4, and the lower side of the support member 1 also has a battery cell group 4. The thermal management component 2 includes a first plate 24 and a second plate 25. The second plate 25 has a groove 251 on the side facing the first plate 24 and a receiving groove 252 on the side facing the support member 1. The groove 251 cooperates with the first plate 24 to form a flow channel. The receiving groove 252 receives the adhesive layer 7. The second plate 25 is connected to the support member 1 via the adhesive layer 7. The support member 1 is provided with a cavity 12, within which a reinforcement member 6 is disposed. The second plate 25 is provided with a plurality of first mounting holes 21, the support member 1 is provided with a plurality of second mounting holes 11, and the reinforcement member 6 is provided with a third mounting hole 61. The second plate 25 and the support member 1 are locked by passing the locking member 5 through the first mounting holes 21 and the second mounting holes 11 and then connecting it to the third mounting hole 61. A first surface 22 is provided on the side of the first plate 24 facing away from the second plate 25. The battery cell group 4 is bonded to the first surface 22. The first surface 22 is provided with an edge portion 23, which surrounds the battery cell group 4 on the thermal management component 2.

[0126] By fastening the second plate 25 to the support member 1 through the adhesive layer 7 and the locking member 5, a dual locking mechanism is achieved between the thermal management component 2 and the support member 1, further stabilizing the connection between the thermal management component 2 and the support member 1. The first plate 24 supports the battery pack 4, while the support member 1 supports the first plate 24 via the second plate 25. The support member 1 is connected to the housing 3, transferring the weight of the battery pack 4 to the housing 3. This reduces the risk of damage caused by the battery pack 4 located below the thermal management component 2 supporting the battery pack 4 located above the thermal management component 2. The provision of the edge portion 23 reduces the risk of adhesive between the battery pack 4 and the first surface 22 overflowing onto the outside of the first surface 22 and contaminating other components within the housing 3.

[0127] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery comprising: Box; A plurality of battery cell groups are disposed in the box, wherein the battery cell group includes at least one battery cell; a thermal management component, wherein the battery cell groups are provided on both sides of the thermal management component along a first direction, and the thermal management component is used to manage the temperature of the battery cells; The support member is disposed in the box body and connected to the box body. Along the first direction, the support member and the thermal management component are stacked and supported by the support member.

2. The battery according to claim 1, wherein The battery further includes an adhesive layer connecting the thermal management component and the support member.

3. The battery according to claim 2, wherein Along the first direction, a receiving groove is formed on a side of the heat management component facing the support member, and at least a portion of the adhesive layer is received in the receiving groove.

4. The battery according to any one of claims 1 to 3, wherein The battery further includes a locking member configured to lock the thermal management component and the support member.

5. The battery according to claim 4, wherein The thermal management component is provided with a first mounting hole, the support member is provided with a second mounting hole, and the locking member is passed through the first mounting hole and the second mounting hole.

6. The battery according to claim 5, wherein Along the second direction, a plurality of first mounting holes are provided on at least one side of the thermal management component, and a plurality of second mounting holes are provided on at least one side of the support member, wherein the plurality of first mounting holes and the plurality of second mounting holes are spaced apart along the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; Wherein, the number of the second mounting holes is greater than the number of the first mounting holes.

7. The battery according to any one of claims 1 to 6, wherein: A cavity is formed inside the support member.

8. The battery according to claim 7, wherein The battery includes a locking member and a reinforcement member, the locking member is configured to lock the thermal management component and the support member, the support member is provided with a second mounting hole for the locking member to pass through, and the second mounting hole is communicated with the cavity; The reinforcement is at least partially accommodated in the cavity, and the reinforcement abuts against two opposite cavity walls of the cavity along the first direction. A third mounting hole is provided at a position of the reinforcement corresponding to the second mounting hole, and the third mounting hole cooperates with the locking accessory.

9. The battery according to any one of claims 1 to 8, wherein Along the first direction, the thermal management component has a first surface facing away from the support member, and the battery cell group is adhered to the first surface; The heat management component is provided with an edge portion, which is provided along an edge of the heat management component and protrudes from the first surface.

10. The battery according to any one of claims 1 to 8, wherein The thermal management component includes a first plate and a second plate. Along the first direction, the second plate is located between the first plate and the support member. A groove is formed on the side of the second plate facing the first plate. The first plate is connected to the second plate and covers the notch of the groove so that the groove forms a flow channel inside the thermal management component.

11. The battery according to claim 10, wherein The battery further includes an adhesive layer connecting the second plate and the support member; Along the first direction, a protrusion is formed on the side of the second plate body facing the support member at a position corresponding to the groove, and a receiving groove is formed on the side of the second plate body facing the support member between two adjacent protrusions, and at least a portion of the adhesive layer is received in the receiving groove.

12. The battery according to claim 10 or 11, wherein Along the first direction, the first plate has a first surface facing away from the second plate, and the battery cell group is bonded to the first surface; The first plate body is provided with an edge portion, which is arranged along an edge of the first plate body and protrudes from the first surface.

13. The battery according to any one of claims 10 to 12, wherein: The first plate body is connected to the second plate body by welding.

14. The battery according to any one of claims 10 to 13, wherein: The groove is stamped and formed on the second plate.

15. An electrical device comprising the battery according to any one of claims 1 to 14, wherein the battery is used to provide electrical energy to the electrical device.

Images