Battery and electric device

Abstract

A battery (100) and an electric device. The battery (100) comprises a case (10), battery cells (20), a thermal management assembly (30), a conductive member (40), and a buffer structure (50). The case (10) is provided with an accommodating cavity (10a). The battery cells (20) are arranged in the accommodating cavity (10a). The thermal management assembly (30) is arranged in the accommodating cavity (10a) and is configured to perform heat exchange with the battery cells (20), and the thermal management assembly (30) comprises at least two heat exchange members (31). The conductive member (40) is electrically connected between each heat exchange member (31) and the case (10). The buffer structure (50) is arranged on at least one of the conductive member (40) and the heat exchange members (31), and the buffer structure (50) is configured to enable the conductive member (40) to always keep in contact with each heat exchange member (31) when the conductive member (40) is deformed. The structure can improve the safety performance of the battery (100).

Description

Batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420364545.X, filed on February 27, 2024, entitled “Battery and Electrical Device,” 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] Currently, electric devices such as vehicles often require batteries to provide power. However, during battery operation, poor contact is prone to occur, which can adversely affect the use of the electric device.

[0005] Summary of the Invention

[0006] In view of the above problems, the present application provides a battery and an electrical device that can improve the safety performance of the battery.

[0007] In one aspect, an embodiment of the present application provides a battery comprising a housing, a battery cell, a thermal management component, a conductive member, and a buffer structure. The housing has a receiving cavity. The battery cell is disposed in the receiving cavity. The thermal management component is disposed in the receiving cavity and is configured to exchange heat with the battery cell, the thermal management component including at least two heat exchange components. The conductive member is electrically connected between each heat exchange component and the housing. The buffer structure is disposed on at least one of the conductive member and the heat exchange component, and the buffer structure is configured to ensure that the conductive member remains in contact with each heat exchange component when the conductive member is deformed.

[0008] In the above scheme, by providing a buffer structure on at least one of the conductive part and the heat exchange part, the conductive part can be ensured to always be in contact with each heat exchange part when it is deformed, and problems such as warping and poor contact with the heat exchange part will not occur, thereby ensuring the reliability of the electrical connection between the conductive part and each heat exchange part, thereby ensuring the equipotential connection between each heat exchange part and the box body, and improving the safety performance of the battery.

[0009] In some embodiments, the heat exchange element includes a heat exchange plate and a current collector. Along the arrangement direction of more than two heat exchange elements, a battery cell is sandwiched between two adjacent heat exchange plates. The current collector is connected to one side of the heat exchange plate along a direction intersecting with the arrangement direction and protrudes from the battery cell. The current collector is provided with a groove, and the conductive element is provided in the groove and is electrically connected to the current collector.

[0010] In the above scheme, the heat exchange plate can be used to perform thermal management on the battery cells so that the battery cells are kept at a suitable temperature. The current collector is used to electrically connect with the conductive part to ensure an equipotential connection between it and the box body. In addition, the conductive part is arranged in the groove of the current collector to facilitate installation and positioning, and also to increase the tightness of the connection between the conductive part and the current collector.

[0011] In some embodiments, the buffer structure includes a buffer cutout provided on the conductive element, and the buffer cutout is located between two adjacent heat exchange elements.

[0012] In the above scheme, a buffer cut is provided on the conductive part, and the buffer cut is provided between two adjacent heat exchange parts, so that when the conductive part is deformed, it can absorb the deformation of the conductive part after being squeezed, so that the conductive part can always be in contact with each heat exchange part, preventing the conductive part from warping and other problems, ensuring the reliability of the electrical connection between the conductive part and the heat exchange part, thereby improving the safety performance of the battery, and simple operation and easy processing.

[0013] In some embodiments, the conductive member is in a strip-shaped structure and extends along the first direction. The number of the buffer cutouts is two or more, and the two or more buffer cutouts are spaced apart and distributed along the first direction.

[0014] In the above scheme, the conductive part has a strip-shaped structure, which is convenient for installation, positioning and processing, and is conducive to ensuring the reliability of its electrical connection with each heat exchanger. The conductive part has two or more buffer cuts, which can better absorb the deformation of the conductive part, and is conducive to further ensuring the reliability of the electrical connection between the conductive part and the heat exchanger, thereby improving the safety performance of the battery.

[0015] In some embodiments, the buffer cuts are arranged in pairs, and the paired buffer cuts are respectively located on both sides of the conductive member along the first direction. The paired buffer cuts separate at least part of the conductive member to form a middle section and an end section, and the middle section and the end section are respectively abutted between the heat exchange member and the box body.

[0016] In the above scheme, when the battery is transported or in operation, deformation of the conductive part may easily cause warping at both ends in the first direction. By arranging the buffer cuts in pairs on both sides of the conductive part along the first direction, the warping problem at both ends of the conductive part can be prevented, thereby ensuring the reliability of the electrical connection between the conductive part and the heat exchange part, and helping to reduce processing costs.

[0017] In some embodiments, the buffer cutout is arranged between the outermost heat exchanger and the second outermost heat exchanger in the thermal management assembly, and in the first direction, the minimum distance between the buffer cutout and the outermost heat exchanger is smaller than the minimum distance between the buffer cutout and the second outermost heat exchanger.

[0018] In the above scheme, the problem of the conductive parts at both ends being easily warped after being squeezed by the heat exchanger can be alleviated, ensuring that the heat exchangers located on the outermost side of the thermal management component can all be in contact with the conductive parts, and ensuring that the heat exchangers located on the second outer side of the thermal management component can also be in contact with the conductive parts, thereby ensuring the reliability of the electrical connection between the conductive parts and the heat exchangers.

[0019] In some embodiments, at least one buffer cutout is a through hole penetrating the conductive member, or at least one buffer cutout is a groove, and the bottom of the groove is connected to the conductive member.

[0020] In the above scheme, the buffer cutout can be set in the form of a through hole and / or a groove, which can prevent the conductive part from partially falling off after being compressed and deformed, ensure the reliability of the electrical connection between the conductive part and the heat exchange part, thereby improving the safety performance of the battery and also helping to increase the diversity of the conductive part.

[0021] In some embodiments, the diameter of the buffer cutout in the first direction is smaller than the distance between two adjacent heat exchange elements.

[0022] In the above solution, the aperture size of the buffer cut in the first direction is set to be smaller than the distance between two adjacent heat exchangers relatively close to the buffer cut, which is conducive to ensuring that each heat exchanger can be electrically connected to the conductive member to ensure the reliability of the electrical connection between the conductive member and the heat exchanger.

[0023] In some embodiments, the buffer structure further includes a widening body. Along the arrangement direction of the two or more heat exchange elements, the widening bodies are provided on the heat exchange elements at both ends of the thermal management component, and the widening bodies are electrically connected to the conductive element.

[0024] In the above scheme, by providing widened bodies on the heat exchangers at both ends of the thermal management assembly, the contact area between the heat exchangers at both ends and the conductive members can be increased, so that the conductive members are always in contact with each heat exchanger, which is beneficial to ensuring the reliability of the electrical connection between the conductive members and the heat exchanger.

[0025] In some embodiments, in the arrangement direction of the heat exchanger, the length dimension of the widening body is smaller than the spacing between two adjacent current collectors, and / or, in the second direction, the length dimension of the widening body is smaller than the length dimension of the current collector, and the second direction intersects with the arrangement direction of the heat exchanger.

[0026] In the above scheme, the length dimension of the widening body in the arrangement direction is set to be smaller than the spacing between two adjacent current collectors, which can avoid interference between the two adjacent current collectors; the length dimension of the widening body in the second direction is set to be smaller than the length dimension of the current collector in the second direction, which can avoid interference between the widening body and other components and reduce processing costs.

[0027] In some embodiments, in the third direction, the projection of the widening body at least partially overlaps with the conductive member, and / or the spacing between the widening body and the conductive member is not greater than the spacing between the current collector and the conductive member, and the third direction intersects with the arrangement direction of the heat exchange member.

[0028] In the above scheme, in the third direction, the projection of the widening body is arranged to at least partially overlap with the conductive part to ensure the effectiveness of the electrical connection between the widening body and the conductive part. Similarly, the spacing between the widening body and the conductive part is not greater than the spacing between the current collector and the conductive part, which can ensure the effectiveness of the electrical connection between the widening body and the conductive part.

[0029] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery in any of the aforementioned embodiments, and the battery is used to provide electrical energy.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces 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 these drawings without creative work.

[0032] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0033] FIG2 is a schematic diagram of an exploded structure of a battery provided in an embodiment of the present application;

[0034] FIG3 is a schematic structural diagram of a conductive member in a battery provided in an embodiment of the present application;

[0035] FIG4 is a schematic structural diagram of another conductive member in a battery provided in an embodiment of the present application;

[0036] FIG5 is a schematic structural diagram of a conductive member in another battery provided in an embodiment of the present application;

[0037] FIG6 is a schematic diagram of an exploded structure of another battery provided in an embodiment of the present application;

[0038] FIG7 is an enlarged structural diagram of P in FIG6 ;

[0039] FIG8 is a schematic diagram of an explosion structure of another battery provided in an embodiment of the present application.

[0040] In the accompanying drawings: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, housing; 10a, accommodating chamber; 11, cover; 12, accommodating frame; 20, battery cell; 30, thermal management component; 31, heat exchanger; 311, heat exchange plate; 312, current collector; 312a-groove; 40, conductive member; 41, middle section; 42, end section; 50, buffer structure; 51, buffer incision; 511, through hole; 512, trough body; 52, widened body; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0044] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0046] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0049] Currently, market developments indicate that power batteries are becoming increasingly widely used. Power batteries are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0050] To dissipate heat and cool the battery cells, a water-cooling plate or other structure is usually installed inside the battery to ensure that the temperature of the battery cells remains within a safe range. Furthermore, in order to prevent current from flowing between the water-cooling plate and the battery casing, the water-cooling plate and the battery casing need to be insulated. However, during the transportation or use of the battery, the insulation between the battery cells and the casing is likely to fail due to a fault. To prevent current from passing through the casing, the conductive components on the casing can be connected to the same potential through equipotential bonding. After the equipotential bonding, even if the conductive components are touched, there will be no risk of electric shock.

[0051] Existing batteries usually have conductive foam installed between the water-cooling plate and the battery case to ensure that the water-cooling plate and the case are connected at the same potential. This causes problems such as the foam itself warping, resulting in poor contact between the cooling plate and the foam, and making it impossible to ensure that the cooling plate and the battery case are connected at the same potential.

[0052] Based on the above technical problems, the present application provides a battery, which provides a buffer structure on at least one of the conductive part and the heat exchange part, so that the conductive part can always be in contact with each heat exchange part when it is deformed, and there will be no problems such as warping and poor contact with the heat exchange part, so as to ensure the reliability of the electrical connection between the conductive part and the heat exchange part, thereby ensuring the equipotential connection between each heat exchange part and the box body, and improving the safety performance of the battery.

[0053] The technical solutions described in the embodiments of the present application are applicable to battery-powered electrical devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric cars, ships, spacecraft, electric toys and electric tools, etc., wherein spacecraft include airplanes, rockets, space shuttles and spacecraft, etc., electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and electric 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.

[0054] The battery described in the embodiments of the present application is not limited to being applicable to the electrical devices described above, but for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0055] Please refer to Figure 1, which is a simple schematic diagram of a vehicle 1000 provided in an embodiment of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 can be provided inside the vehicle 1000. For example, the battery 100 can be provided at the bottom, front or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can be used as an operating power source for the vehicle 1000. The vehicle 1000 can also include a controller 200 and a motor 300. The controller 200 is used to control the battery to power the motor 300, for example. The battery can be used for starting and navigating the vehicle 1000. Of course, the battery 100 can also be used to drive the vehicle 1000, replacing or partially replacing fuel or natural gas to provide drive for the vehicle 1000.

[0056] The structure of the battery 100 is described in detail below with reference to the accompanying drawings.

[0057] Referring to Figure 2, an embodiment of the present application provides a battery 100, including a housing 10, a battery cell 20, a thermal management component 30, a conductive member 40, and a buffer structure 50. The housing 10 has a accommodating cavity 10a. The battery cell 20 is disposed in the accommodating cavity 10a. The thermal management component 30 is disposed in the accommodating cavity 10a and is configured to exchange heat with the battery cell 20. The thermal management component 30 includes at least two heat exchange components 31. The conductive member 40 is electrically connected between each heat exchange component 31 and the housing 10. The buffer structure 50 is disposed on at least one of the conductive member 40 and the heat exchange component 31, and the buffer structure 50 is configured so that the conductive member 40 can always be in contact with each heat exchange component 31 when the conductive member 40 is deformed.

[0058] In the embodiment of the present application, the first direction X, the second direction Y and the third direction Z are respectively intersected, wherein the first direction X can be the width direction of the box 10, the second direction Y can be the length direction of the box 10, and the third direction Z can be the height direction of the box 10.

[0059] The housing 10 may be a simple three-dimensional structure such as a single rectangular parallelepiped or cylindrical structure, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepiped or cylindrical structures, and the present embodiment is not limited thereto. The housing 10 may be made of an alloy material such as an aluminum alloy or an iron alloy, or a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, and the present embodiment is not limited thereto.

[0060] The box body 10 is used to accommodate the battery cells 20 . The box body 10 can have various structures to seal and protect the battery cells 20 and other components inside the box body 10 .

[0061] In some embodiments, the box body 10 includes a cover plate 11 and a receiving frame 12. The cover plate 11 is arranged at one end of the receiving frame 12 in the third direction Z. The cover plate 11 and the receiving frame 12 together form a box body 10 that receives other components such as the battery cell 20 to ensure sealing requirements.

[0062] In some embodiments, the box 10 can be used as part of the chassis structure of the vehicle. For example, part of the box 10 can become at least a part of the floor of the vehicle 1000, or part of the box 10 can become at least a part of the crossbeam and longitudinal beam of the vehicle 1000.

[0063] In some embodiments, the battery 100 may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0064] The battery 100 mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells 20 to provide higher voltage and capacity. If there are multiple battery cells 20, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple battery cells 20 are connected in both series and parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole composed of the multiple battery cells 20 is accommodated in the housing 10. Of course, it is also possible that multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery group 100, and the multiple battery groups 100 are then connected in series, in parallel, or in a mixed connection to form a whole and accommodated in the housing 10.

[0065] In the embodiment of the present application, the battery cell 20 may include a lithium-ion battery cell 20, a sodium-ion battery cell 20, or a magnesium-ion battery cell 20, etc., and the embodiment of the present application is not limited to this. The battery cell 20 may be flat, rectangular, or in other shapes, and the embodiment of the present application is not limited to this. The battery cell 20 is generally divided into three types according to the packaging method: cylindrical battery cells 20, square battery cells 20, and soft-pack battery cells 20, and the embodiment of the present application is not limited to this. However, for the sake of simplicity, the following embodiments are all described using the square battery cell 20 as an example.

[0066] Continuing with Figure 2 , the battery 100 provided in this embodiment of the present application further includes a thermal management assembly 30, a conductive member 40, and a buffer structure 50. The thermal management assembly 30 is disposed within the accommodating cavity 10a and includes at least two heat exchange members 31. Optionally, the at least two heat exchange members 31 are spaced apart, with a battery cell 20 sandwiched between adjacent heat exchange members 31.

[0067] Exemplarily, two or more heat exchange elements 31 are spaced apart along the first direction X, and the heat exchange elements 31 are connected to the battery cells 20 to adjust the temperature of the battery cells 20 .

[0068] Thermal management should be understood as the heat between the heat exchanger 31 and the battery cell 20 can be transferred between the two. For example, the heat exchanger 31 is in direct contact with the battery cell 20 to achieve contact heat exchange, or a heat-conducting structure (such as thermally conductive glue) is set between the heat exchanger 31 and the battery cell 20 for heat exchange. Specifically, the heat exchanger 31 dissipates heat and cools or heats the battery cell 20, controls the temperature of the battery cell 20 within a suitable range, and improves the service life and safety performance of the battery cell 20. In addition, when a battery cell 20 has thermal runaway, the heat generated by the thermal runaway battery cell 20 will be taken away by the heat exchanger 31 in contact with it, reducing the temperature of the thermal runaway battery cell 20 and avoiding thermal runaway problems in adjacent battery cells 20, thereby ensuring the safety performance of the battery cell 20. The heat exchanger 31 can be used to perform thermal management on the battery cell 20 to ensure that the battery cell 20 is within a suitable temperature range, thereby ensuring the safety performance of the battery 100.

[0069] Optionally, the number of the heat exchanger 31 can be set to two, and of course, it can also be set to multiple. Optionally, the heat exchanger 31 can be set to an elliptical or diagonal plate-shaped structure.

[0070] The conductive element 40 is electrically connected between each heat exchange element 31 and the housing 10 to ensure equipotential connection between each heat exchange element 31 and the housing 10 , thereby ensuring the safety performance of the battery 100 .

[0071] Optionally, the conductive member 40 may be abutted against the box body 10 , or may be bonded to the box body 10 by conductive adhesive.

[0072] The conductive element 40 has the ability to conduct electricity and undergo elastic deformation, so that it can be squeezed between each heat exchange element 31 and the box body 10 and meet the equipotential connection requirements between each heat exchange element 31 and the box body 10.

[0073] Optionally, the conductive member 40 includes an elastic portion and a conductive portion wrapped around the elastic portion, wherein the elastic portion supports the conductive portion. The elastic portion may be made of various materials, for example, foam, rubber, etc.

[0074] Optionally, the conductive part is made of a flexible material, that is, the conductive part has flexible deformation capability, so that the conductive part can better adapt to the thermal management component 30 and the box body 10 under the action of the elastic support force provided by the elastic part, which is beneficial to increase the contact area between the conductive part and the thermal management component 30 and the box body 10, ensure the equipotential connection between the thermal management component 30 and the box body 10, and help ensure the safety performance of the battery 100.

[0075] Optionally, the conductive part may be one or more of conductive cloth, tin foil, aluminum foil, etc.

[0076] Optionally, the conductive member 40 is disposed on one side of the box body 10 along the second direction Y, that is, the conductive member 40 is electrically connected to one side of the thermal management component 30 along the second direction Y to prevent it from contacting the battery cell 20 and causing safety problems.

[0077] Since the thermal management component 30 includes at least two heat exchange components 31, the conductive component 40 is squeezed into the box body 10 by at least two heat exchange components 31. When the battery 100 is transported or used, the conductive component 40 itself may easily warp somewhere, resulting in poor contact with a certain heat exchange component 31.

[0078] Therefore, in the embodiment of the present application, a buffer structure 50 is provided on at least one of the conductive part 40 and the heat exchange part 31. The buffer structure 50 can ensure that the conductive part 40 can always be in contact with each heat exchange part 31 when the conductive part 40 is deformed, so as to ensure the reliability of the electrical connection between the conductive part 40 and each heat exchange part 31, thereby ensuring the equipotential connection between the heat exchange part 31 and the box body 10, and improving the safety performance of the battery 100.

[0079] Optionally, the buffer structure 50 may be provided on the conductive element 40 and may also be provided on the heat exchange element 31 . Of course, it may also be provided on both the conductive element 40 and the heat exchange element 31 .

[0080] Optionally, the buffer structure 50 may include a first extension component arranged on the conductive part 40. Specifically, through experimental tests or experience, it is found that there is a place on the conductive part 40 of the battery 100 where poor contact with the heat exchange part 31 is likely to occur during operation. The first extension component is set here to absorb the deformation of the conductive part 40 when the conductive part 40 is deformed, so that the conductive part 40 can contact each heat exchange part 31 without poor contact problems, thereby ensuring the equipotential connection between the heat exchange part 31 and the box body 10, and improving the safety performance of the battery 100.

[0081] Optionally, the buffer structure 50 may also include a second extension component arranged on the heat exchanger 31. Specifically, through experimental tests or experience, it is found that the battery 100 is prone to poor contact with the conductive part 40 on the heat exchanger 31 during operation. The second extension component is set here to increase the area of ​​the heat exchanger 31 used to contact the conductive part 40, so that when the conductive part 40 is deformed, the conductive part 40 can contact each heat exchanger 31 and the second extension component, and poor contact problems will not occur, thereby ensuring the equipotential connection between the heat exchanger 31 and the box body 10 and improving the safety performance of the battery 100.

[0082] In some embodiments, a medium flow channel is provided in the heat exchange element 31 so that a heat exchange medium (such as water, air, phase change material, etc.) can flow in the medium flow channel to exchange heat with the battery cell 20, so that the heat exchange element 31 completes the thermal management of the battery cell 20.

[0083] Please refer to Figures 1 to 7. In some embodiments, the heat exchange element 31 includes a heat exchange plate 311 and a current collector 312. Along the arrangement direction of more than two heat exchange elements 31, a battery cell 20 is sandwiched between two adjacent heat exchange plates 311. The current collector 312 is connected to one side of the heat exchange plate 311 along a direction intersecting with the arrangement direction and protrudes from the battery cell 20. The current collector 312 is provided with a groove 312a. The conductive member 40 is disposed in the groove 312a and is electrically connected to the current collector 312.

[0084] This arrangement is beneficial for improving the thermal management efficiency of the thermal management assembly 30 on the battery cell 20 , and is also convenient for installing and positioning the conductive member 40 , and is beneficial for improving the connection tightness between the conductive member 40 and the heat exchange member 31 .

[0085] As shown in FIG7 , two or more heat exchange elements 31 are spaced apart along the first direction X, and a battery cell 20 is sandwiched between two adjacent heat exchange plates 311. This arrangement can increase the contact area between the battery cell 20 and the heat exchange plate 311, thereby improving the thermal management efficiency of the thermal management component 30 on the battery cell 20.

[0086] A medium flow channel is provided in the heat exchange plate 311 to exchange heat with the battery cell 20 , so that the heat exchange element 31 completes the thermal management of the battery cell 20 .

[0087] Optionally, the current collector 312 is connected to one side of the heat exchange plate 311 along the second direction Y and protrudes from the battery cell 20 to avoid interference with the battery cell 20 and causing safety problems such as electrical connection between the two.

[0088] Optionally, the groove 312a is arranged on one side of the current collector 312 along the third direction Z, and the conductive member 40 is arranged in the groove 312a and electrically connected to the current collector 312 to ensure the effectiveness of the electrical connection of the conductive member 40 between the heat exchange member 31 and the box body 10, and to facilitate the installation and positioning of the conductive member 40.

[0089] As shown in Figures 6 and 7 , the current collector 312 is illustratively recessed along the third direction Z and / or the second direction Y to form a groove 312a. The groove 312a extends through the current collector 312 along the first direction X. The groove 312a has a first groove wall connected to the current collector 312 along the second direction Y and a second groove wall connected to the current collector 312 along the third direction Z. This arrangement facilitates processing and facilitates assembly and positioning with the conductive member 40. Referring to Figures 2 to 5 , in some embodiments, the buffer structure 50 includes a buffer notch 51 provided on the conductive member 40, and the buffer notch 51 is located between two adjacent heat exchange elements 31.

[0090] The buffer cut 51 should be understood as a cut made on the conductive member 40 so that the conductive member 40 becomes a structure with at least partial discontinuity.

[0091] By providing a buffer cutout 51 on the conductive part 40, when each heat exchanger 31 squeezes the conductive part 40, the buffer cutout 51 can absorb the deformation of the conductive part 40 after being squeezed. Specifically, the heat exchanger 31 squeezes the conductive part 40 along the third direction Z, and the conductive part 40 itself is deformed to adapt to the squeezing force applied by the heat exchanger 31. The deformation of the conductive part 40 in the first direction X will cause the area of ​​the buffer cutout 51 to become smaller. That is, the buffer cutout 51 absorbs the deformation of the conductive part 40 so that the conductive part 40 will not warp, avoiding the problem that part of the conductive part 40 cannot contact the heat exchanger 31, which is beneficial to ensuring the equipotential connection between the heat exchanger 31 and the box body 10, thereby ensuring the safety performance of the battery 100.

[0092] The buffer cutout 51 is located between two adjacent heat exchange elements 31 . It can be understood that the buffer cutout 51 is arranged corresponding to the area between the two adjacent heat exchange elements 31 , that is, in the third direction Z, the projection of the buffer cutout 51 is located between the two adjacent heat exchange elements 31 .

[0093] By arranging in this manner, the buffer cutout 51 and the heat exchange element 31 can be staggered to ensure the reliability of each heat exchange element 31 being able to contact the conductive element 40 .

[0094] Optionally, the number of the buffer cutouts 51 can be set to one, two, or more.

[0095] Optionally, a buffer cutout 51 may be correspondingly provided between every two adjacent heat exchange elements 31 , so as to improve the reliability of each heat exchange element 31 being able to contact with the conductive element 40 .

[0096] Optionally, the buffer cutout 51 can be provided in the middle of the conductive member 40, or at the edge of the conductive member 40. The number and position of the buffer cutouts 51 can be set according to the actual structure of the thermal management assembly 30, and this application does not limit this.

[0097] Optionally, the shape of the buffer cutout 51 may be an irregular shape, or may be a regular rectangular or arc-shaped cutout provided on the conductive member 40 .

[0098] Optionally, a buffer cut 51 is provided on the conductive member 40, and the conductive member 40 can be provided with two structures: cut and not cut. It should be understood that the conductive member 40 can be separated by the buffer cut 51 to form at least two parts. Of course, the conductive member 40 can also be divided by the buffer cut 51 into an at least partially continuous whole.

[0099] In the embodiment of the present application, a buffer cutout 51 is provided on the conductive part 40 to absorb the deformation of the conductive part 40 after being squeezed, prevent the conductive part 40 from warping and other problems, ensure the reliability of the electrical connection between the conductive part 40 and the heat exchange part 31, and thereby improve the safety performance of the battery 100. The operation is simple and the processing is convenient.

[0100] In some embodiments, the conductive member 40 is in a strip-shaped structure and extends along the first direction X. The number of the buffer cutouts 51 is two or more, and the two or more buffer cutouts 51 are spaced apart along the first direction X.

[0101] Optionally, the conductive member 40 may be configured as a strip structure such as a cuboid, a polygonal prism, or a cylinder, which is not limited in the present application.

[0102] By configuring the conductive element 40 as a strip structure, installation, positioning, and processing are facilitated. At the same time, it is also beneficial for contact with each heat exchange element 31 in the thermal management component 30 to ensure connection reliability.

[0103] Optionally, the buffer cutouts 51 may be two, or more. Optionally, in the first direction X, the spacing between two adjacent buffer cutouts 51 may be the same, or different.

[0104] By providing two or more buffer cuts 51 on the conductive member 40 and spaced apart along the first direction X, more deformation of the conductive member 40 can be absorbed, which is beneficial to further ensure the reliability of the electrical connection between the conductive member 40 and the heat exchange member 31, thereby improving the safety performance of the battery 100. The operation is simple and the processing is convenient.

[0105] Optionally, the conductive member 40 includes a first wall and a second wall arranged opposite to each other along the first direction X, and a side wall connected between the first wall and the second wall. The first wall, the second wall and the third wall together form a structure having a strip-shaped inner cavity, and the strip-shaped inner cavity can be filled with an elastic part to form the conductive member 40.

[0106] In some embodiments, the buffer cuts 51 are arranged in pairs, and the paired buffer cuts 51 are respectively located on both sides of the conductive member 40 along the first direction X. The paired buffer cuts 51 separate at least part of the conductive member 40 to form a middle section 41 and an end section 42, and the middle section 41 and the end section 42 are respectively abutted between the heat exchange member 31 and the box body 10.

[0107] As can be seen from the above, two or more heat exchange elements 31 can be spaced apart along the first direction X, and the conductive element 40 extends along the first direction X. When the battery 100 is in use, the pressure provided by the heat exchange element 31 to the conductive element 40 causes the conductive element 40 to deform, making it easy for the conductive element 40 to warp on both sides in the first direction X. Therefore, by arranging the buffer cuts 51 arranged in pairs on both sides of the conductive element 40 along the first direction X, when the conductive element 40 is compressed and deformed, the buffer cuts 51 can better absorb the deformation of the conductive element 40, so that the conductive element 40 can always be in contact with each heat exchange element 31, so that the positions on both sides of the conductive element 40 in the first direction X will not warp, thereby ensuring the reliability of the electrical connection between the conductive element 40 and the heat exchange element 31, thereby ensuring the equipotential connection between the heat exchange element 31 and the box body 10, and improving the safety performance of the battery 100.

[0108] Optionally, in the first direction X, the length of the middle section 41 is greater than that of the end section 42 . Specifically, the lengths of the middle section 41 and the end section 42 can be set according to the structure of the conductive element 40 and the number of heat exchange elements 31 .

[0109] It should be noted that when the buffer cutout 51 is configured to separate the conductive member 40 into at least two parts, the conductive member 40 can be separated into a separately arranged middle section 41 and an end section 42. The middle section 41 and the end section 42 are respectively abutted between the heat exchanger 31 and the housing 10 to ensure equipotential connection between the two. For example, when the battery 100 is being transported or operated, each heat exchanger 31 included in the thermal management assembly 30 is pressed against the conductive member 40, causing the conductive member 40 to deform. However, since the middle section 41 and the end section 42 are separately arranged, the deformation of the middle section 41 will not affect the end section 42, so that the end section 42 will not warp, thereby ensuring the connection reliability between the conductive member 40 and the heat exchanger 31.

[0110] When the buffer cutout 51 is configured to separate the conductive member 40 into an at least partially continuous integral portion, at least a portion of the conductive member 40 can be separated into a middle section 41 and end sections 42, with at least a partial connection. For example, when the battery 100 is being transported or operated, each heat exchange element 31 included in the thermal management assembly 30 is pressed against the conductive member 40, causing deformation of the conductive member 40. The deformation of the middle section 41 is absorbed by the buffer cutout 51 without affecting the end sections 42, preventing the end sections 42 from warping, thereby ensuring a reliable connection between the conductive member 40 and the heat exchange element 31.

[0111] In the above scheme, when the battery is transported or in operation, deformation of the conductive part 40 may easily cause warping at both ends in the first direction X. By arranging the buffer cutouts 51 in pairs on both sides of the conductive part 40 along the first direction X, the warping problem at both ends of the conductive part 40 can be prevented, thereby ensuring the reliability of the electrical connection between the conductive part 40 and the heat exchanger 31 and helping to reduce processing costs.

[0112] In some embodiments, the buffer cutout 51 is arranged between the outermost heat exchanger 31 and the second outermost heat exchanger 31 in the thermal management assembly 30. In the first direction X, the minimum distance between the buffer cutout 51 and the outermost heat exchanger 13 is smaller than the minimum distance between the buffer cutout 51 and the second outermost heat exchanger 31.

[0113] By setting it in this way, the problem of the conductive part 40 at both ends being easily warped after being squeezed by the heat exchanger 31 can be alleviated, ensuring that the heat exchanger 31 located at the outermost side of the thermal management component 30 can all contact with the conductive part 40.

[0114] Moreover, by setting the minimum distance between the buffer cutout 51 and the outermost heat exchanger 13 in the first direction X to be smaller than the minimum distance between the buffer cutout 51 and the second outermost heat exchanger 31, that is, by setting the buffer cutout 51 close to the outermost heat exchanger 31 along the first direction X, while ensuring that the outermost heat exchanger 31 of the thermal management component 30 can all be in contact with the conductive member 40, it can also ensure that the heat exchanger 31 located on the second outer side of the thermal management component 30 can also be in contact with the conductive member 40.

[0115] Specifically, when the buffer cut 51 is set to a structure that can cut off the conductive part 40, at this time, the two end sections 42 of the conductive part 40 can respectively contact the two outermost heat exchangers 13, while the two sides of the middle section 41 of the conductive part 40 may have a warping problem. Therefore, by setting the minimum distance between the buffer cut 51 and the outermost heat exchanger 13 in the first direction X to be smaller than the minimum distance between the buffer cut 51 and the second outermost heat exchanger 31, the two sides of the middle section 41 can be prevented from warping, thereby preventing poor contact with the second outermost heat exchanger 31.

[0116] The outermost heat exchanger 31 should be understood as the heat exchanger 31 arranged adjacent to only one heat exchanger 31 in the thermal management assembly 30 , and the second outermost heat exchanger 31 should be understood as the heat exchanger 31 arranged adjacent to the outermost heat exchanger 31 .

[0117] As shown in FIG. 4 , in some embodiments, at least one buffer notch 51 is a through hole 511 penetrating the conductive member 40 .

[0118] Optionally, the through hole 511 may be configured as a hole penetrating the conductive member 40 along the third direction Z, and the through hole 511 may also be configured as a hole penetrating the conductive member 40 along the second direction Y.

[0119] In the above scheme, by setting the buffer cutout 51 as a through hole 511, it is possible to prevent the conductive part 40 from partially falling off after being compressed and deformed, thereby ensuring the reliability of the electrical connection between the conductive part 40 and the heat exchange part 31, thereby improving the safety performance of the battery 100 and also helping to improve the diversity of the conductive part 40.

[0120] Furthermore, the through hole 511 can absorb the deformation of the conductive member 40 after being squeezed, reduce the deformation of the conductive member 40 , and ensure that the conductive member 40 is in contact with each heat exchange member 31 .

[0121] As shown in FIG. 5 , in some embodiments, at least one buffer notch 51 is a groove 512 , and the bottom of the groove 512 is connected to the conductive member 40 .

[0122] Optionally, the opening direction of the trough body 512 can be arranged along the third direction Z toward the heat exchange element 31. Of course, the opening direction of the trough body 512 can be arranged along the second direction Y toward the heat exchange element 31.

[0123] In the above scheme, by setting the buffer cutout 51 in the form of a groove body 512, it is possible to prevent the conductive part 40 from partially falling off after being compressed and deformed, thereby ensuring the reliability of the electrical connection between the conductive part 40 and the heat exchange part 31, thereby improving the safety performance of the battery 100 and also helping to improve the diversity of the conductive part 40.

[0124] Furthermore, the groove body 512 can absorb the deformation of the conductive member 40 after being squeezed, reduce the deformation of the conductive member 40 , and ensure that the conductive member 40 is in contact with each heat exchange member 31 .

[0125] Optionally, the conductive member 40 may also be configured to include both a buffer cutout 51 in the form of a through hole 511 and a buffer cutout 51 in the form of a slot 512, which is not limited in this application. In some embodiments, the diameter of the buffer cutout 51 in the first direction X is smaller than the distance between two adjacent heat exchange members 31.

[0126] Through the above-mentioned setting, the embodiment of the present application sets the aperture size of the buffer cutout 51 in the first direction X to be smaller than the distance between two adjacent heat exchange components 31 that abut the conductive component 40 and are relatively close to the buffer cutout 51, ensuring that each heat exchange component 31 can be electrically connected to the conductive component 40, thereby ensuring the reliability of the electrical connection between the conductive component 40 and the heat exchange component 31.

[0127] Exemplarily, the ratio of the aperture size of the buffer cutout 51 in the first direction X to the distance between two adjacent heat exchange elements 31 is between 1 / 5 and 3 / 5, which can ensure that the conductive element 40 and the heat exchange element 31 have sufficient abutment area while also ensuring that the buffer cutout 51 can absorb sufficient deformation.

[0128] Referring to Figures 2 to 5 , the battery 100 provided in the embodiment of the present application may include a buffer structure 50 on the conductive member 40 capable of absorbing deformation. This ensures that the thermal management assembly 30 and the housing 10 are always connected at the same potential during transportation or operation of the battery 100, thereby ensuring the safety of the battery 100. Furthermore, the buffer structure 50 is simple to install and easy to manufacture.

[0129] Please refer to Figures 6 and 7. In some embodiments, the buffer structure 50 also includes a widening body 52. ​​Along the arrangement direction of the two or more heat exchange components 31, the widening body 52 is provided on the current collector 312 at both ends of the thermal management component 30. The widening body 52 is electrically connected to the conductive component 40.

[0130] It is understandable that, in the embodiment of the present application, the current collectors 312 located at both ends of the thermal management component 30 are the current collectors 312 located on the outermost heat exchange element 31 of the thermal management component 30 .

[0131] In the above scheme, by providing widening bodies 52 on the current collectors 312 located at both ends of the thermal management component 30, the contact area between the current collectors 312 located at both ends and the conductive member 40 can be increased, so that the conductive member 40 is always in contact with each current collector 312, which is beneficial to ensuring the reliability of the electrical connection between the conductive member 40 and the heat exchange member 31.

[0132] Optionally, the widening body 52 is provided on the current collector 312 , and the widening body 52 and the current collector 312 can be provided as an integrally formed structure, which is conducive to improving manufacturing efficiency. Of course, the widening body 52 and the current collector 312 can also be provided separately for easy processing.

[0133] Optionally, the widening body 52 is connected to a side of the current collector 312 close to the battery cell 20 along the first direction X, which can reduce the occupied area of ​​the thermal management component 30 and thus improve the space utilization of the battery.

[0134] Optionally, the widening body 52 is connected to a side of the current collector 312 close to the groove 312 a along the third direction Z, which helps to ensure the effectiveness of the contact between the widening body 52 and the conductive member 40 .

[0135] Optionally, the shape of the widened body 52 can be set to be any one of rectangular, circular, and elliptical.

[0136] Optionally, the widened body 52 may be configured as a plate-like structure, which is convenient for processing and manufacturing and facilitates assembly.

[0137] In some embodiments, in the arrangement direction of the heat exchange elements 31 , the length of the widened body 52 is smaller than the distance between two adjacent current collectors 312 .

[0138] By setting it in this way, the widened body 52 can be prevented from contacting with the heat exchange component 31 on the second outer side, thereby preventing interference between the two and ensuring the safety of the battery.

[0139] In some embodiments, in the second direction Y, the length of the widening body 52 is smaller than the length of the current collector 312 , and the second direction Y intersects with the arrangement direction of the heat exchange elements 31 .

[0140] Setting the length of the widening body 52 in the second direction Y to be smaller than the length of the current collector 312 in the second direction Y can avoid interference between the widening body 52 and the battery cell 20 and reduce processing costs.

[0141] In some embodiments, in the third direction Z, the projection of the widened body 52 at least partially overlaps with the conductive element 40 , and the third direction Z intersects with the arrangement direction of the heat exchange element 31 .

[0142] This arrangement helps ensure the effectiveness of the contact between the widened body 52 and the conductive member 40, thereby ensuring that the two can be electrically connected.

[0143] The third direction Z and the second direction Y are intersected.

[0144] In some embodiments, in the third direction Z, the distance between the widening body 52 and the conductive member 40 is not greater than the distance between the current collector 312 and the conductive member 40, and the third direction Z intersects with the arrangement direction of the heat exchange member, and the third direction Z intersects with the arrangement direction of the heat exchange member 31.

[0145] This arrangement helps ensure the effectiveness of the contact between the widened body 52 and the conductive member 40, thereby ensuring that the two can be electrically connected.

[0146] In the third direction Z, the distance between the widening body 52 and the conductive part 40 may be equal to or less than the distance between the current collector 312 and the conductive part 40. That is to say, the end of the widening body 52 close to the box body 10 in the third direction Z may be flush with the end of the current collector 31 close to the box body 10 in the third direction Z, or may protrude from the end of the current collector 31 close to the box body 10 in the third direction Z, both of which can ensure the effectiveness of the electrical connection between the widening body 52 and the conductive part 40.

[0147] Referring to Figures 6 and 7 , the battery 100 provided in the embodiment of the present application can be provided with a buffer structure 50 on the heat exchange element 31 to absorb deformation. This ensures that the thermal management assembly 30 and the housing 10 are always connected at the same potential during transportation or operation of the battery 100, thereby ensuring the safety of the battery 100. Furthermore, the buffer structure 50 is simple to install and easy to manufacture.

[0148] Referring to FIG8 , the battery 100 provided in this embodiment of the present application may further include a buffer structure 50 on each of the conductive element 40 and the heat exchange element 31, each capable of absorbing deformation. This ensures that the thermal management component 30 and the housing 10 are always connected at the same potential during transportation or operation of the battery 100, thereby ensuring the safety of the battery 100. Furthermore, the buffer structure 50 is simple to install and easy to manufacture.

[0149] In a second aspect, an embodiment of the present application provides an electrical device, comprising the battery 100 in any of the aforementioned embodiments, and the battery 100 is used to provide electrical energy.

[0150] It should be noted that the power consumption device provided in the embodiment of the present application has the beneficial effects of the battery 100 in any of the aforementioned embodiments. Detailed descriptions can be made with reference to the aforementioned description of the beneficial effects of the battery, which will not be repeated in this embodiment of the present application.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery comprising: A box body having a receiving cavity; A battery cell is disposed in the accommodating cavity; a thermal management component disposed in the accommodating cavity and configured to exchange heat with the battery cell, the thermal management component comprising at least two heat exchange elements; a conductive member electrically connected between each of the heat exchange elements and the box; The buffer structure is provided on at least one of the conductive element and the heat exchange element, and the buffer structure is configured to enable the conductive element to always be in contact with each of the heat exchange elements when the conductive element is deformed.

2. The battery according to claim 1, wherein The heat exchange element includes a heat exchange plate and a current collector. Along the arrangement direction of two or more heat exchange elements, the battery cell is sandwiched between two adjacent heat exchange plates. The current collector is connected to one side of the heat exchange plate along a direction intersecting with the arrangement direction and protrudes from the battery cell. The current collector is provided with a groove. The conductive member is provided in the groove and is electrically connected to the current collector.

3. The battery according to claim 1 or 2, wherein The buffer structure includes a buffer cutout provided on the conductive element, and the buffer cutout is located between two adjacent heat exchange elements.

4. The battery according to claim 3, characterized in that The conductive member is in a strip-shaped structure and extends along a first direction. The number of the buffer cutouts is two or more, and the two or more buffer cutouts are spaced apart and distributed along the first direction.

5. The battery according to claim 4, wherein The buffer cuts are arranged in pairs, and the buffer cuts arranged in pairs are respectively located on both sides of the conductive member along the first direction. The buffer cuts arranged in pairs separate at least part of the conductive member to form a middle section and an end section, and the middle section and the end section are respectively abutted between the heat exchange member and the box body.

6. The battery according to claim 5, wherein The buffer cutout is arranged between the outermost heat exchange component and the second outermost heat exchange component in the thermal management assembly. In the first direction, the minimum distance between the buffer cutout and the outermost heat exchange component is smaller than the minimum distance between the buffer cutout and the second outermost heat exchange component.

7. The battery according to claim 4 or 5, wherein At least one of the buffer cutouts is a through hole penetrating the conductive member, and / or at least one of the buffer cutouts is a slot, and the bottom of the slot is connected to the conductive member.

8. The battery according to claim 7, wherein The diameter of the buffer cutout in the first direction is smaller than the distance between two adjacent heat exchange elements.

9. The battery according to any one of claims 2 to 8, wherein The buffer structure further includes a widening body, which is provided on the current collectors at both ends of the thermal management component along the arrangement direction of the two or more heat exchange elements, and is electrically connected to the conductive element.

10. The battery according to claim 9, wherein In the arrangement direction of the heat exchanger, the length dimension of the widening body is smaller than the spacing between two adjacent current collectors, and / or, in the second direction, the length dimension of the widening body is smaller than the length dimension of the current collector, and the second direction intersects with the arrangement direction of the heat exchanger.

11. The battery according to claim 9, wherein In the third direction, the projection of the widening body at least partially overlaps with the conductive member, and / or the distance between the widening body and the conductive member is not greater than the distance between the current collector and the conductive member, and the third direction intersects with the arrangement direction of the heat exchange member.

12. An electrical device comprising the battery according to any one of claims 1 to 11, wherein the battery is used to provide electrical energy.

Images