Battery and electric equipment

Abstract

The invention relates to the technical field of batteries, in particular to a battery and electric equipment. The battery comprises a box body, a cover plate, battery monomers, a heat management part and a supporting part, the box body comprises a containing cavity and an opening communicated with the containing cavity, the cover plate is located above the box body and covers the opening, the battery monomers are arranged in the containing cavity, the heat management part comprises a heat exchange part and a current collecting part, the heat exchange part is connected with the current collecting part, and an inner cavity is communicated with the current collecting part; the heat exchange part is used for bearing the battery monomers and is in heat conduction connection with the battery monomers, and the supporting part is at least partially located below the current collecting part and is connected to the current collecting part. According to the battery provided by the invention, the supporting piece is arranged below the current collecting piece, and at least part of weight of the battery monomers is transferred to the supporting piece, so that the probability of damages such as bending and breaking of the current collecting piece is reduced.

Description

Technical Field

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

[0002] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0003] The battery is used to provide electrical energy to electrical equipment, and includes a casing, battery cells and thermal management components. The thermal management components include a heat exchange component and a current collector that are connected. The heat exchange component is arranged inside the casing and is thermally connected to the battery cells. The current collector is arranged outside the casing and is suspended in the air, which easily leads to the probability of damage such as bending and disconnection of the current collector. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present application is to provide a battery and an electrical device having the battery, which can effectively solve the problem that the current collector is easily damaged by bending, disconnection, etc.

[0005] The first aspect of the present application provides a battery, the battery comprising:

[0006] A box body and a cover plate, wherein the box body comprises a receiving cavity and an opening connected to the receiving cavity, and the cover plate is located above the box body and covers the opening;

[0007] A battery cell is arranged in the accommodating cavity;

[0008] A heat management component, the heat management component includes a heat exchange component and a current collecting component, the heat exchange component is connected to the current collecting component and the internal cavity is communicated, and the heat exchange component is used to carry the battery cell and is thermally connected to the battery cell;

[0009] The support member is at least partially located below the current collecting member, and the support member is connected to the current collecting member.

[0010] According to the battery of the present application, the heat exchange component carries the battery cell and is thermally connected to the battery cell, so that the heat exchange component can conduct heat to the battery cell and carry at least part of the weight of the battery cell. Since the current collector is connected to the heat exchange component, at least part of the weight of the battery cell can be transferred to the current collector through the heat exchange component. By arranging a support member under the current collector, at least part of the weight of the battery cell can be transferred to the support member, thereby reducing the probability of damage to the current collector such as bending and disconnection.

[0011] In some embodiments of the present application, the heat exchange element is located between the battery cell and the cover plate, and is used to thermally connect the battery cell and the cover plate.

[0012] The heat exchange component is located between the battery cell and the cover plate. The heat exchange component can be used to conduct heat to the battery cell, and can also conduct heat upward through the cover plate to the structural parts on the side of the cover plate away from the battery cell. It can simultaneously perform heat management on the components on both sides, thereby improving the effective use of the heat exchange component. When the temperature of the battery cell or the components on the outside of the cover plate is low, the battery cell and the components on the outside of the cover plate can be heated by the heat exchange component. Alternatively, when the temperature of the battery cell or the outside of the cover plate rises, the battery cell and the components on the outside of the cover plate can be dissipated by the thermal management component to reduce the temperature of the battery cell and the components on the outside of the cover plate, so that the heat conduction function of the heat exchange component is more widely used, thereby improving the effective use of the heat exchange component.

[0013] In some embodiments of the present application, the box body includes a plurality of box beams connected to the cover plate, and the box beams form support members.

[0014] The box beam is used to connect the cover of the box and has a certain supporting strength. By locating the box beam below the current collector and connecting the current collector, at least part of the weight of the battery cell can be transferred to the box beam, thereby reducing the probability of damage such as bending and disconnection of the current collector.

[0015] In some embodiments of the present application, a receiving groove is formed on the box beam, and at least a portion of the current collecting member is located in the receiving groove.

[0016] By providing a receiving groove on the box beam and positioning at least a portion of the current collector in the receiving groove, the current collector can be supported by the box beam to bear at least a portion of the weight of the battery cell, while at the same time reducing the available space of the battery cell occupied by the current collector in the box, thereby facilitating the arrangement of more battery cells in the box and improving the power supply capacity of the battery.

[0017] In some embodiments of the present application, the box beam includes a partition beam, which is used to divide the accommodating cavity into at least two chambers, the at least two chambers including a first chamber for placing a battery cell, and the surface of the partition beam facing the first chamber or the surface facing the cover plate has a accommodating groove.

[0018] The heat exchange component can be distributed in the first chamber to conduct heat to the battery cell, and the current collector is arranged in the receiving groove on the partition beam. Through the above scheme, the current collector does not occupy the space in the first chamber, which is conducive to arranging more battery cells in the first chamber. Moreover, the current collector is closer to the first chamber, which is convenient for connecting the heat exchange component and the current collector, and can avoid the heat exchange component exceeding the first chamber too much to cause material waste.

[0019] In some embodiments of the present application, the box beam includes a first side beam, and a receiving groove is provided on a surface of the first side beam facing the cover plate or a surface of the first side beam facing the receiving cavity.

[0020] The first side beam is arranged close to the edge of the box body, and the receiving groove is located on the first side beam, so as to facilitate leading part of the structure of the current collecting member to the outside of the box body, so as to be connected with the external pipeline.

[0021] In some embodiments of the present application, a first surface of the first side beam facing the accommodating cavity is provided with an accommodating groove, and the minimum spacing dimension between the current collecting member and the battery cell is greater than or equal to the minimum spacing dimension between the first surface and the battery cell.

[0022] Since the minimum spacing dimension between the current collecting member and the battery cell is greater than or equal to the minimum spacing dimension between the first surface and the battery cell, that is, the first surface is arranged closer to the battery cell in the accommodating cavity than the current collecting member, the current collecting member will not protrude from the first surface and occupy the available space of the battery cell in the accommodating cavity, thereby facilitating the arrangement of more battery cells in the accommodating cavity and improving the power supply capacity of the battery.

[0023] In some embodiments of the present application, the minimum thickness dimension of the current collecting member along the vertical direction is h1, and the value range of h1 is 0.5mm≤h1≤50mm. Preferably, the value range of h1 is 2mm≤h1≤20mm.

[0024] Since the weight of the battery cell is at least partially borne by the heat exchange element, and the heat exchange element is connected to the current collector, at least part of the weight of the battery cell can be transferred to the current collector through the heat exchange element. If the minimum thickness of the current collector is too small, it is easy for the current collector to be damaged by bending, breaking, etc. Therefore, the minimum thickness of the current collector within this range can reduce the probability of damage such as bending and breaking of the current collector.

[0025] In some embodiments of the present application, the weight of the battery is M, wherein 0.0005 mm / Kg≤h1 / M≤10 mm / Kg, preferably, 0.002 mm / Kg≤h1 / M≤2 mm / Kg.

[0026] Since the weight of the battery is at least partially borne by the heat exchange element, and the heat exchange element is connected to the current collector, if the battery weight is large and the minimum thickness of the current collector is too small, it is easy for the current collector to be damaged by bending, disconnecting, etc. Therefore, the ratio of the minimum thickness of the current collector to the battery weight within this range can reduce the probability of damage such as bending and disconnecting of the current collector.

[0027] In some embodiments of the present application, there are multiple heat exchange elements and they are spaced apart along a first direction. The current collecting element extends along the first direction and is connected to the multiple heat exchange elements along a second direction. The first direction and the second direction are perpendicular to each other.

[0028] The width dimension of the current collecting member along the second direction is h2, and the value range of h2 is 0.5mm≤h2≤100mm. Preferably, the value range of h2 is 3mm≤h2≤20mm.

[0029] Since the current collector is used to collect the heat-conducting medium flowing into or out of the heat exchange element, if the width of the current collector is too small, it will be difficult to meet the flow collection requirements of multiple heat exchange elements. If the width of the current collector is too large, it will take up too much space and cause the battery to be too large. Therefore, the width of the current collector should be controlled within this range.

[0030] In some embodiments of the present application, a width dimension of the first side beam along the second direction is h3, wherein 0.005<h2 / h3≤50, preferably, 0.03<h2 / h3≤10.

[0031] Since the weight of the battery is at least partially borne by the heat exchange element, and the heat exchange element is connected to the current collecting element, at least part of the weight of the battery is transferred to the current collecting element through the heat exchange element. If the ratio of h2 to h3 is too small, when the size of the first side beam is constant, the width of the current collecting element may be too small, which may cause the current collecting element to bend, break, or be damaged. If the ratio of h2 to h3 is too large, a larger accommodating groove may be required on the first side beam, which may cause the strength of the first side beam to be too low and reduce reliability. Therefore, better results can be achieved when the ratio of the width of the current collecting element to the width of the first side beam is controlled within this range.

[0032] In some embodiments of the present application, a receiving groove is provided on the surface of the cover plate facing the box body, the receiving groove is provided directly above the box body beam, and at least a portion of the current collecting member is located in the receiving groove.

[0033] Since the area of ​​the cover plate is larger, it is easier to set up the accommodating groove without occupying the space of the box beam, thereby improving the supporting strength of the box beam. The accommodating groove is arranged above the box beam, and the current collector is supported by the box beam. At least part of the weight of the battery cell can be transferred to the box beam, thereby reducing the probability of damage such as bending and disconnection of the current collector.

[0034] In some embodiments of the present application, the battery cell includes a pressure relief mechanism and a first end surface facing the heat exchange element, and the pressure relief mechanism is located on other end surfaces of the battery cell except the first end surface.

[0035] The battery cell is connected to the thermal management component through the first end face, so that the battery cell is fixedly connected to the thermal management component and can conduct heat with the thermal management component. Since the pressure relief mechanism is located on the end faces of the battery cell other than the first end face, when the battery cell is in an abnormal thermal runaway state, it can reduce the risk of the battery cell spraying high-temperature, hot, or even flaming substances through the pressure relief mechanism to damage the thermal management component, causing liquid leakage in the thermal management component to cause liquid conductivity, thermal management failure, and other risks. In addition, high-temperature, hot, or even flaming substances will not be sprayed toward one side of the cover plate through the pressure relief mechanism, avoiding the thermal anomaly on the battery cell side from spreading to the other side of the cover plate.

[0036] In some embodiments of the present application, the battery cell further includes a second end surface facing away from the heat exchange element, and the pressure relief mechanism is located on the second end surface.

[0037] The second end face is arranged away from the first end face, so that when the battery cell is in an abnormal thermal runaway state, the battery cell can further reduce the risk of spraying high-temperature, hot and even flaming substances through the pressure relief mechanism to damage the thermal management components, causing liquid leakage in the thermal management components to cause liquid conductivity, thermal management failure and other risks. In addition, high-temperature, hot and even flaming substances will not be sprayed toward one side of the cover plate through the pressure relief mechanism, thereby avoiding the thermal anomaly on the battery cell side from spreading to the other side of the cover plate.

[0038] The second aspect of the present application further proposes an electrical device, comprising any one of the above-mentioned batteries, wherein the battery is used to provide electrical energy to the electrical device.

[0039] In some embodiments of the second aspect of the present application, the electrical equipment is a vehicle, wherein the cover plate is configured as a cabin floor of the vehicle.

[0040] By configuring the cover plate as the vehicle's cab floor, that is, at least a portion of the cab floor is used to form the cover plate, and since the thermal management component is heat-conductingly connected to the battery cell and the cover plate, the thermal management component can effectively conduct heat to the battery cell and the cab floor. When the temperature of the battery cell or the cab floor is low, the thermal management component can be used to heat the battery cell and the cab floor. Alternatively, when the temperature of the battery cell or the cab floor rises, the thermal management component can be used to dissipate heat from the battery cell and the cab floor, thereby reducing the temperature of the battery cell and the cab floor, improving the comfort in the cab, and reducing the adverse effects of heat on the battery cell.

[0041] In some embodiments of the second aspect of the present application, a seat cross beam is connected to the cover plate.

[0042] Since the thermal management component can effectively conduct heat to both the battery cells and the cover plate, by connecting the cover plate to the seat beam, the seat beam can be heat conducted through the cover plate. Therefore, when the temperature of the seat beam is low, the seat beam can be heated by the thermal management component. Alternatively, when the temperature of the seat beam rises, the seat beam can be cooled by the thermal management component to reduce the temperature of the seat beam and improve the comfort of the seat beam.

[0043] 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

[0044] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0045] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0046] Figure 2 This is a schematic diagram of the connection structure between the battery and the seat crossbeam provided in one embodiment of the present application;

[0047] Figure 3 is a schematic diagram of the exploded structure of a battery and a seat crossbeam provided in one embodiment of the present application;

[0048] Figure 4 is a schematic structural diagram of a heat exchange element provided in one embodiment of the present application;

[0049] Figure 5 is a schematic structural diagram of a heat exchange element provided in another embodiment of the present application;

[0050] Figure 6 It is a schematic diagram of the AA cross-sectional structure of a battery and a seat crossbeam provided in one embodiment of the present application;

[0051] Figure 7 It is a schematic diagram of the enlarged structure of the battery and the seat crossbeam B provided in one embodiment of the present application;

[0052] Figure 8 is a schematic diagram of the connection structure between the current collecting member and the box body provided in another embodiment of the present application;

[0053] Fig. 9is a schematic diagram of the connection structure between the current collecting member and the cover plate provided in another embodiment of the present application;

[0054] Fig.10 It is a schematic diagram of the cross-sectional structure of a battery and a seat crossbeam CC provided in one embodiment of the present application;

[0055] Fig.11 It is a schematic diagram of the enlarged structure of the battery and the D part of the seat cross beam provided in one embodiment of the present application;

[0056] Fig.12 is a schematic diagram of a cross-sectional structure of a battery and a seat crossbeam CC provided in another embodiment of the present application;

[0057] Fig.13 is a schematic diagram of an enlarged structure of a battery and a seat crossbeam E portion provided in another embodiment of the present application;

[0058] Fig.14 is a schematic diagram of a cross-sectional structure of a battery and a seat crossbeam CC provided in another embodiment of the present application;

[0059] Fig.15 is a schematic diagram of an enlarged structure of a battery and a seat crossbeam F provided in another embodiment of the present application;

[0060] Fig.16 is a schematic diagram of a cross-sectional structure of a battery and a seat crossbeam CC provided in another embodiment of the present application;

[0061] Fig.17 It is a schematic diagram of the enlarged structure of the battery and the G portion of the seat beam provided in another embodiment of the present application.

[0062] The reference numerals in the specific implementation manner are as follows:

[0063] 1. Vehicles;

[0064] 10. Battery; 11. Controller; 12. Motor; 13. Frame; 14. Seat beam;

[0065] 20. box body; 21. cover plate; 22. bottom plate; 23. enclosure plate; 231. first side beam; 2311. first surface; 24. raised portion; 25. receiving groove;

[0066] 30. Battery assembly; 31. Battery cell; 311. First electrode terminal; 312. Second electrode terminal; 313. Pressure relief mechanism;

[0067] 40. Thermal management component; 41. Heat exchange component; 42. First current collecting component; 421. First pipe section; 422. Second pipe section; 43. Second current collecting component; 44. Liquid inlet end; 45. Liquid outlet end. DETAILED DESCRIPTION

[0068] The following detailed description of the implementation of the technical solution of the present application is provided in conjunction with the accompanying drawings. The following implementation is only used to more clearly illustrate the technical solution of the present application, and is therefore only used as an example, and cannot be used to limit the scope of protection of the present application.

[0069] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0070] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0071] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0072] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0073] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.

[0075] The battery is used to provide electrical energy to electrical equipment, and includes a casing, battery cells and thermal management components. The thermal management components include a heat exchange component and a current collector that are connected. The heat exchange component is arranged inside the casing and is thermally connected to the battery cells. The current collector is arranged outside the casing and is suspended in the air, which easily leads to the probability of damage such as bending and disconnection of the current collector.

[0076] In view of the defects of the prior art, the purpose of the present application is to provide a battery and an electrical device having the battery, which can transfer at least part of the weight of the battery cell to the support member by arranging a support member under the current collector, thereby reducing the probability of damage such as bending and disconnection of the current collector.

[0077] To solve the above-mentioned problems, the present application carries the battery cells on the heat exchange component and thermally connects them to the battery cells, so that the heat exchange component can conduct heat to the battery cells and carry at least part of the weight of the battery cells through the heat exchange component. Since the current collector is connected to the heat exchange component, at least part of the weight of the battery cells can be transferred to the current collector through the heat exchange component. By arranging a support member under the current collector, at least part of the weight of the battery cells can be transferred to the support member, thereby reducing the probability of damage to the current collector such as bending and disconnection.

[0078] Based on the above considerations, the present application provides a battery and an electric device having the battery. The battery is suitable for various electric devices using batteries, such as electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; the battery is used to provide electrical energy for the above electric devices.

[0079] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using the battery for electric vehicles as an example.

[0080] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1 provided for some embodiments of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is provided inside the vehicle 1, and the battery 10 may be provided at the bottom, the head or the tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1. The vehicle 1 may further include a controller 11, a motor 12 and a frame 13, wherein the battery 10, the controller 11 and the motor 12 are respectively provided on the frame 13, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0081] In some embodiments of the present application, the battery 10 can be used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1. The battery 10 mentioned in the present application can also be referred to as a battery pack.

[0082] Combination Figures 1 to 3 As shown, in some embodiments of the present application, the battery 10 includes a case 20, a cover plate 21, a battery cell 31, a thermal management component 40 and a support member, the case 20 includes a accommodating cavity and an opening connected to the accommodating cavity, the cover plate 21 is located above the case 20 and covers the opening, the battery cell 31 is arranged in the accommodating cavity, the thermal management component 40 includes a heat exchange member 41 and a current collecting member, the heat exchange member 41 is connected to the current collecting member and the internal cavity is connected, the heat exchange member 41 is used to carry the battery cell 31 and is thermally connected to the battery cell 31, the support member is at least partially located below the current collecting member, and the support member is connected to the current collecting member.

[0083] Specifically, the box 20 can be used to accommodate the battery cells 31 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 31. The box 20 can be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres. The embodiment of the present application is only illustrated by taking the box 20 as a cuboid. The material of the box 20 can be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber plus epoxy resin.

[0084] In some embodiments of the present application, the box body 20 may include a surrounding plate 23 and a bottom plate 22, wherein the bottom plate 22 and the surrounding plate 23 may be an integral structure, or a detachable structure, the bottom plate 22 and the surrounding plate 23 together form a accommodating cavity, the bottom plate 22 and the cover plate 21 are respectively arranged at both ends of the surrounding plate 23, and the surrounding plate 23 is clamped between the cover plate 21 and the bottom plate 22.

[0085] In order to meet different power requirements, the battery 10 may include a plurality of battery cells 31, which are the smallest units constituting the battery assembly 30 or the battery 10. The plurality of battery cells 31 may be connected in series, in parallel, or in hybrid connection via electrode terminals, wherein hybrid connection refers to a mixture of series connection and parallel connection.

[0086] The battery assembly 30 may include one or more battery cells 31. Multiple battery cells 31 may be connected in series, in parallel, or in mixed series to form the battery assembly 30, and multiple battery assemblies 30 may be connected in series, in parallel, or in mixed series to form the battery 10. The battery cell 31 may be cylindrical, flat, rectangular, or in other shapes. The battery cells 31 are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells.

[0087] The thermal management component 40 includes a heat exchange component 41 and a current collector. The heat exchange component 41 has a heat conduction cavity, and the current collector has a current collector cavity. The current collector cavity is used to input a heat conduction medium into the heat conduction cavity or to output a heat conduction medium from the heat conduction cavity. The heat conduction medium can flow into the interior of the heat conduction cavity through the current collector cavity and conduct heat with the battery cell 31. The heat conduction medium can also flow out of the heat conduction cavity through the current collector cavity after heat conduction, thereby continuously conducting heat to the battery cell 31 through the circulating flow of the heat conduction medium. In addition, a circulating pump can be connected to the thermal management component 40 itself or externally to keep the fluid inside the thermal management component 40 in a circulating flow state to prevent heat concentration and enable continuous heat conduction.

[0088] The heat exchange component 41 and the battery cell 31 are thermally connected in a direct and indirect manner. The direct connection is that the heat exchange component 41 fits the battery cell 31 without a connector or thermally conductive adhesive in between. The indirect connection is that the heat exchange component 41 is connected to the battery cell 31 through a connector or thermally conductive adhesive and conducts heat. At the same time, the heat exchange component 41 is used to carry the battery cell 31, that is, the battery cell 31 is connected to the heat exchange component 41, and the battery cell 31 is supported by the heat exchange component 41, so as to fix the position of the battery cell 31 relative to the box 20.

[0089] According to the battery 10 of the present application, the heat exchange component 41 carries the battery cell 31 and is thermally connected to the battery cell 31. The heat exchange component 41 can conduct heat to the battery cell 31 and carry at least part of the weight of the battery cell 31. Since the current collector is connected to the heat exchange component 41, at least part of the weight of the battery cell 31 can be transferred to the current collector through the heat exchange component 41. By arranging a support component under the current collector, at least part of the weight of the battery cell 31 can be transferred to the support component, thereby reducing the probability of damage to the current collector such as bending and disconnection.

[0090] like Figure 4As shown, the thermal management component 40 may include at least two heat exchange elements 41 of plate-like structure, and the at least two heat exchange elements 41 are spaced apart in a first direction, wherein the first direction is perpendicular to the axial direction of the heat conduction cavity, and the current collecting element includes a first current collecting element 42 and a second current collecting element 43, and the first current collecting element 42 and the second current collecting element 43 extend along the second direction respectively, and the first end of the heat conduction cavity of any one of the at least two heat exchange elements 41 is connected to the first current collecting element 42, and the second end of the heat conduction cavity of any one of the at least two heat exchange elements 41 is connected to the second current collecting element 43.

[0091] Among them, the first collecting part 42 includes a first tube part 421 and a second tube part 422, and the first tube part 421 and the second tube part 422 are respectively arranged at the first end of the heat exchange element 41 and are disconnected, wherein the first tube part 421 is connected to the first end of a part of the heat exchange element 41, and the second tube part 422 is connected to the first end of another part of the heat exchange element 41, and one of the first tube part 421 and the second tube part 422 is provided with a liquid inlet end 44, and the other of the first tube part 421 and the second tube part 422 is provided with a liquid outlet end 45.

[0092] By connecting the first tube part 421 and the second tube part 422 to the first ends of all the heat exchange elements 41, and providing a liquid inlet end 44 in one of the first tube part 421 and the second tube part 422, and providing a liquid outlet end 45 in the other, the heat-conducting medium can be introduced into the heat exchange element 41 through the liquid inlet end 44, and flow out of the heat exchange element 41 through the liquid outlet end 45. During the flow of the heat-conducting medium, the heat-conducting medium can flow through all the heat exchange elements 41 through the second collector 43. At the same time, the liquid inlet end 44 and the liquid outlet end 45 are jointly provided at the first end, which can effectively reduce the size of the heat management component 40 along the second direction. The second direction is perpendicular to the first direction.

[0093] In some embodiments of the present application, the first current collecting member 42 and the second current collecting member 43 may also be complete tubular structures respectively, wherein the first current collecting member 42 is provided with a liquid inlet end 44, and the second current collecting member 43 is provided with a liquid outlet end 45, that is, the liquid inlet end 44 and the liquid outlet end 45 are respectively arranged at the two ends of the axial direction of the heat conduction cavity, and the liquid inlet end 44 and the liquid outlet end 45 are connected through the heat conduction cavity.

[0094] In some embodiments of the present application, the first current collecting member 42 and the second current collecting member 43 may be supported by supporting members respectively, or only one of them may be supported by a supporting member. The present application only takes the first current collecting member 42 being supported by a supporting member as an example.

[0095] like Figure 5As shown, in some embodiments of the present application, the thermal management component 40 may also include at least two tubular heat exchange elements 41, and the at least two heat exchange elements 41 are spaced apart in a first direction, where the first direction is the width direction of the cover plate 21, and any heat exchange element 41 includes a bent structure formed by connecting a plurality of tubular structures in sequence.

[0096] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the heat exchange element 41 is located between the battery cell 31 and the cover plate 21 and is used to thermally connect the battery cell 31 and the cover plate 21 .

[0097] Specifically, the heat exchange element 41 is disposed above the battery cell 31 and below the cover plate 21, and is thermally connected to the battery cell 31 and the cover plate 21, respectively. The cover plate 21 may be a steel plate, an aluminum plate, or other metal plate with thermal conductivity. Compared with the existing cover plates 21, which are mostly made of non-metallic materials, the metal cover plate 21 has better thermal conductivity, thereby facilitating heat conduction between the heat exchange element 41 and the cover plate 21.

[0098] The connection method between the heat exchange component 41 and the cover plate 21 includes one or more of bonding, bolting and welding. The heat exchange component 41 is bonded to at least part of the battery cells 31 by thermally conductive adhesive. The thermally conductive adhesive has good thermal conductivity and bonding properties, and can effectively fix the battery cells 31 to the cover plate 21 and conduct heat between the battery cells 31 and the cover plate 21.

[0099] The heat exchange element 41 is located between the battery cell 31 and the cover plate 21. The heat exchange element 41 can be used to conduct heat to the battery cell 31, and can also conduct heat upward to the structural parts on the side of the cover plate 21 away from the battery cell 31 through the cover plate 21. It can simultaneously perform heat management on the components on both sides, thereby improving the effective use of the heat exchange element 41. When the temperature of the components outside the battery cell 31 or the cover plate 21 is low, the heat exchange element 41 can be used to heat the components outside the battery cell 31 and the cover plate 21. Alternatively, when the temperature outside the battery cell 31 or the cover plate 21 increases, the heat exchange element 41 can be used to dissipate heat from the components outside the battery cell 31 and the cover plate 21, thereby reducing the temperature of the components outside the battery cell 31 and the cover plate 21, so that the heat conduction function of the heat exchange element 41 is more widely used, thereby improving the effective use of the heat exchange element 41.

[0100] For example, the cockpit floor of the vehicle 1 can be connected to the cover plate 21, or the cockpit floor can be directly formed by the cover plate 21. Since the heat exchange element 41 is thermally connected to the battery cell 31 and the cover plate 21, the heat exchange element 41 can effectively conduct heat to the battery cell 31, and can also effectively conduct heat to the cover plate 21, and conduct heat to the cockpit floor through the cover plate 21. When the temperature of the battery cell 31 or the cockpit floor is low, the battery cell 31 and the cockpit floor can be heated by the heat exchange element 41, or when the temperature of the battery cell 31 or the cockpit floor rises, the heat exchange element 41 is used to dissipate heat from the battery cell 31 and the cockpit floor, thereby reducing the temperature of the battery cell 31 and the cockpit floor, improving the comfort in the cockpit, and reducing the adverse effects of heat on the battery cell 31.

[0101] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the box body 20 includes a plurality of box beams connected to the cover plate 21 , and the box beams form support members.

[0102] Specifically, the box beam includes a plurality of side beams, which are arranged to form a frame structure of the enclosure 23 and are used to connect the box 20 and the cover plate 21. They have a certain supporting strength, so they can be used to support the first current collector 42, transfer and share part of the weight of the battery cell 31 carried by the first current collector 42, thereby reducing the probability of damage such as bending and disconnection of the first current collector 42. In some embodiments of the present application, the box beam may also include a partition beam (not shown in the figure), which is arranged inside the frame structure surrounded by a plurality of side beams, and is used to divide the accommodating cavity into at least two chambers, and at least one of the chambers is used to install the battery cell 31. The partition beam also has a certain supporting strength, so it can be used to support the first current collector 42, transfer and share part of the weight of the battery cell 31 carried by the first current collector 42, thereby reducing the probability of damage such as bending and disconnection of the first current collector 42. In some embodiments of the present application, other supporting structures, such as support columns or support bars, may be provided inside the box body 20 on the surface of the bottom plate 22 facing the cover plate 21 , and the support columns or support bars are provided below the first current collecting part 42 and used to support the first current collecting part 42 .

[0103] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the box beam is formed with a receiving groove 25 , and at least a portion of the current collecting member is located in the receiving groove 25 .

[0104] By providing a receiving groove 25 on the box beam and positioning at least a portion of the first current collector 42 in the receiving groove 25, the first current collector 42 can be supported by the box beam to bear at least a portion of the weight of the battery cell 31, while at the same time reducing the available space of the battery cell 31 in the box body 20 occupied by the first current collector 42, thereby facilitating the arrangement of more battery cells 31 in the box body 20 and improving the power supply capacity of the battery 10.

[0105] like Figure 3 As shown, in some embodiments of the present application, the box beam includes a partition beam, which is used to divide the accommodating cavity into at least two chambers, and the at least two chambers include a first chamber for placing the battery cell 31, and the surface of the partition beam facing the first chamber or the surface facing the cover plate 21 has a accommodating groove.

[0106] The heat exchange component 41 can be distributed in the first chamber to conduct heat to the battery cell 31, and the first current collector 42 is arranged in the receiving groove on the partition beam. Through the above scheme, the first current collector 42 does not occupy the space in the first chamber, which is conducive to arranging more battery cells 31 in the first chamber. Moreover, the first current collector 42 is closer to the first chamber, which is convenient for connecting the heat exchange component 41 with the first current collector 42, and can avoid the heat exchange component 41 exceeding the first chamber too much to cause material waste.

[0107] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the box beam includes a first side beam 231, and a receiving groove 25 is provided on a surface of the first side beam 231 facing the cover plate or a surface facing the receiving cavity.

[0108] Specifically, the surface of the first side beam 231 facing the accommodating cavity is provided with an accommodating groove 25. Since the first side beam 231 is arranged close to the edge of the box body 20, the accommodating groove 25 is located on the first side beam 231, so that part of the structure of the first current collecting member 42 is easily led out of the box body 20, so as to be connected with the external pipeline.

[0109] Combination Figure 3 , Figure 6 and Figure 8 As shown, in some embodiments of the present application, a receiving groove 25 is provided on the surface of the first side beam 231 facing the cover plate 21. Since the first side beam 231 is arranged close to the edge of the box body 20, the receiving groove 25 is located on the first side beam 231, so that part of the structure of the first current collecting member 42 is easily led out to the outside of the box body 20, so as to be connected with the external pipeline.

[0110] Combination Figure 3 , Figure 6 and Fig. 9As shown, in some embodiments of the present application, a receiving groove 25 is provided on the surface of the cover plate 21 facing the box body 20. The receiving groove 25 is provided directly above the box body beam, and at least a portion of the current collecting member is located in the receiving groove.

[0111] Since the area of ​​the cover plate 21 is larger, it is easier to set up the accommodating groove 25 without occupying the space of the box beam, thereby improving the supporting strength of the box beam. The accommodating groove 25 is arranged above the box beam, and the first current collector 42 is supported by the box beam. At least part of the weight of the battery cell 31 can be transferred to the box beam, thereby reducing the probability of damage such as bending and disconnection of the first current collector 42.

[0112] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, a first surface 2311 of the first side beam 231 facing the accommodating cavity is provided with an accommodating groove 25, and the minimum spacing dimension between the current collector and the battery cell 31 is greater than or equal to the minimum spacing dimension between the first surface 2311 and the battery cell 31.

[0113] Since the minimum spacing dimension between the first current collector 42 and the battery cell 31 is greater than or equal to the minimum spacing dimension between the first surface 2311 and the battery cell 31, that is, the first surface 2311 is arranged closer to the battery cell 31 in the accommodating cavity relative to the first current collector 42, the first current collector 42 will not protrude from the first surface 2311 and occupy the available space of the battery cell 31 in the accommodating cavity, thereby facilitating the arrangement of more battery cells 31 in the accommodating cavity and improving the power supply capacity of the battery 10.

[0114] In some embodiments of the present application, the minimum thickness dimension of the current collecting member along the vertical direction is h1, and the value range of h1 is 0.5mm≤h1≤50mm. Preferably, the value range of h1 is 2mm≤h1≤20mm.

[0115] Specifically, along the direction perpendicular to the cover plate 21, the minimum thickness dimension of the first current collector 42 is h1. h1 can be any value in the range of 0.5mm…0.8mm…1.0mm…49mm…50mm. Since the weight of the battery cell 31 is at least partially borne by the heat exchange component 41, and the heat exchange component 41 is connected to the first current collector 42, at least part of the weight of the battery cell 31 can be transferred to the first current collector 42 through the heat exchange component 41. When the value of h1 is less than 0.5mm, the thickness dimension of the first current collector 42 will be too small, which may easily cause the first current collector 42 to be damaged by bending, disconnection, etc. When the value of h1 is greater than 50mm, the thickness dimension of the first current collector 42 will be too large, thereby increasing the weight and cost of the battery 10. When the value range of h1 is 0.5 mm ≤ h1 ≤ 50 mm, the probability of the first current collecting member 42 being damaged such as bending or disconnection can be reduced, the heat of the battery cell 31 can be effectively conducted, and the weight and cost of the battery 10 can be reduced.

[0116] Optionally, h1 can be any value in the range of 2mm…2.5mm…5mm…9mm…20mm. When the value range of h1 is 2mm≤h1≤20mm, the probability of the first current collector 42 being damaged by bending, disconnection, etc. can be further reduced, the heat of the battery cell 31 can be effectively conducted, and the weight and cost of the battery 10 can be reduced.

[0117] In some embodiments of the present application, the weight of the battery is M, wherein 0.0005 mm / Kg≤h1 / M≤10 mm / Kg, preferably, 0.002 mm / Kg≤h1 / M≤2 mm / Kg.

[0118] Specifically, h1 / M can be any value in the range of 0.0005mm / Kg…0.001mm / Kg…0.01mm / Kg…4mm / Kg…10mm / Kg. Since the weight of the battery 10 is at least partially borne by the heat exchange component 41, when the value of h1 / M is less than 0.0005mm / Kg, the thickness of the first current collector 42 will be too small, which may easily cause the first current collector 42 to be damaged by bending, disconnection, etc. When the value of h1 / M is greater than 10mm / Kg, the size of the first current collector 42 will be too large, thereby increasing the weight and cost of the battery 10. When the value range of h1 / M is 0.0005mm / Kg≤h1 / M≤10mm / Kg, it can reduce the probability of damage such as bending and disconnection of the first current collector 42, effectively conduct heat to the battery cell 31, and reduce the weight and cost of the battery 10.

[0119] Optionally, the value of h1 / M can be any value in the range of 0.002mm / Kg…0.01mm / Kg…0.1mm / Kg…0.5mm / Kg…2mm / Kg. When the value range of h1 / M is 0.002mm / Kg≤h1 / M≤2mm / Kg, the probability of the first current collector 42 being damaged by bending, disconnection, etc. can be further reduced, the heat of the battery cell 31 can be effectively conducted, and the weight and cost of the battery 10 can be reduced.

[0120] Combination Figure 4 and Figure 7 As shown, in some embodiments of the present application, there are multiple heat exchange elements 41 and they are arranged at intervals along the first direction. The current collecting element extends along the first direction and is connected to the multiple heat exchange elements 41 along the second direction. The first direction and the second direction are perpendicular to each other.

[0121] The width dimension of the current collecting member along the second direction is h2, and the value range of h2 is 0.5mm≤h2≤100mm. Preferably, the value range of h2 is 3mm≤h2≤20mm.

[0122] Specifically, the plane formed by the first direction and the second direction is arranged parallel to the plane where the cover plate 21 is located. The first direction is the width direction of the cover plate 21, and the second direction is the length direction of the cover plate 21. The value of h2 can be any value in the range of 0.5mm…1.5mm…5mm…50mm…100mm. Since the first current collector 42 is used to collect the heat-conducting medium flowing into or out of the heat exchange element 41, when the value of h2 is less than 0.5mm, the size of the first current collector 42 will be too small, and it will be difficult to meet the convergence requirements of multiple heat exchange elements 41. When the value of h2 is greater than 100mm, the size of the first current collector 42 will be too large, thereby increasing the weight and cost of the battery 10. When the value range of h2 is 0.5mm≤h2≤100mm, it can not only meet the convergence requirements of multiple heat exchange elements 41, effectively conduct heat to the battery cells 31, but also reduce the weight and cost of the battery 10.

[0123] Optionally, the value of h2 can be any value in the range of 3mm…3.5mm…5mm…10mm…20mm. When the value range of h2 is 3mm≤h2≤20mm, the convergence demand of multiple heat exchange components 41 can be further improved, the heat of the battery cell 31 can be effectively conducted, and the weight and cost of the battery 10 can be reduced.

[0124] like Figure 7 As shown, in some embodiments of the present application, the width dimension of the first side beam 231 along the second direction is h3, wherein 0.005<h2 / h3≤50, preferably, 0.03<h2 / h3≤10.

[0125] Specifically, the value of h2 / h3 can be any value in the range of 0.005…0.01…5…10…50.

[0126] Since the weight of the battery 10 is at least partially carried by the heat exchanger 41, and the heat exchanger 41 is connected to the first current collector 42, at least part of the weight of the battery 10 is transferred to the first current collector 42 through the heat exchanger 41. When the value of h2 / h3 is less than 0.005, when the size of the first side beam 231 is constant, the width of the first current collector 42 relative to the first side beam 231 is too small, which easily causes the first current collector 42 to be damaged by bending, disconnection, etc. When the value of h2 / h3 is greater than 50, it is necessary to open a larger accommodating groove 25 on the first side beam 231, which easily causes the strength of the first side beam 231 to be too low and the reliability to be reduced. When the value range of h2 / h3 is 0.005<h2 / h3≤50, it can reduce the probability of the first current collector 42 being damaged by bending, disconnection, etc., effectively conduct heat to the battery cell 31, and at the same time improve the strength of the first side beam 231.

[0127] Optionally, the value of h2 / h3 may be any value in the range of 0.03…0.01…1…5…10. When the value range of h2 / h3 is 0.03<h2 / h3≤10, the probability of the first current collector 42 being damaged such as bending and disconnection can be further reduced, the heat of the battery cell 31 can be effectively conducted, and the strength of the first side beam 231 can be improved.

[0128] Combination Figure 3 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, the battery cell 31 includes a pressure relief mechanism 313 and a first end surface facing the heat exchange element 41 , and the pressure relief mechanism 313 is located on other end surfaces of the battery cell 31 except the first end surface.

[0129] Specifically, the battery cell 31 may have multiple end surfaces, including a first end surface, through which the battery cell 31 may be thermally connected to the heat exchange element 41, and the pressure relief mechanism 313 may be disposed on any end surface of the multiple end surfaces except the first end surface.

[0130] When the battery cell 31 is in an abnormal thermal runaway state, the battery cell 31 can be reduced from spraying high-temperature, hot, or even flaming substances through the pressure relief mechanism 313 to damage the heat exchange element 41, thereby reducing the risk of liquid leakage in the heat exchange element 41 causing liquid conductivity, thermal management failure, and other risks. In addition, high-temperature, hot, or even flaming substances will not be sprayed toward one side of the cover plate 21 through the pressure relief mechanism 313, thereby preventing the thermal anomaly on the battery cell 31 side from spreading to the other side of the cover plate 21.

[0131] In some embodiments of the present application, the battery cell 31 further includes a second end surface facing away from the heat exchange element 41 , and the pressure relief mechanism 313 is located on the second end surface.

[0132] Specifically, the first end face and the second end face are respectively arranged at the two ends of the battery cell 31, so that the second end face has a maximum spacing dimension with the first end face compared with the other end faces of the battery cell 31. Therefore, when the battery cell 31 is in an abnormal thermal runaway state, the risk of the battery cell 31 spraying high-temperature, hot and even flaming substances through the pressure relief mechanism 313 to damage the heat exchange element 41, causing liquid leakage in the heat exchange element 41 and causing other risks such as liquid conductivity and thermal management failure, can be further reduced. In addition, high-temperature, hot and even flaming substances will not be sprayed toward one side of the cover plate 21 through the pressure relief mechanism 313, thereby avoiding the thermal anomaly on the side of the battery cell 31 from spreading to the other side of the cover plate 21.

[0133] Combination Figure 3 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, the battery cell 31 may be a prismatic battery, including a first end face and a second end face arranged opposite to each other in the vertical direction, wherein the first end face is connected to the heat exchange element 41, and the second end face is arranged toward the bottom plate 22. The second end face includes a first electrode terminal 311, a second electrode terminal 312, and a pressure relief mechanism 313, and the first electrode terminal 311, the second electrode terminal 312, and the pressure relief mechanism 313 are arranged toward the bottom plate 22, respectively, and a gap is provided between the first electrode terminal 311, the second electrode terminal 312, and the pressure relief mechanism 313, so as to facilitate the pressure relief of the pressure relief mechanism 313, and facilitate the setting of the connection structure between the first electrode terminal 311 and the second electrode terminal 312 of different battery cells 31.

[0134] Combination Figure 3 , Fig.12 and Fig.13 As shown, in some embodiments of the present application, the battery cell 31 is a cubic battery, including a first end face and a second end face arranged opposite to each other in the vertical direction, wherein the first end face is connected to the heat exchange element 41, and the second end face is arranged toward the bottom plate 22. Among them, the first end face has the largest area, so that the connection strength between the battery cell 31 and the heat exchange element 41 can be improved, and the heat conduction area between the battery cell 31 and the heat exchange element 41 can be improved, and the heat conduction speed can be improved. The battery cell 31 also includes a plurality of side faces arranged between the first end face and the second end face, wherein the first electrode terminal 311, the second electrode terminal 312 and the pressure relief mechanism 313 are arranged on the side facing the enclosure 23, and the first electrode terminal 311, the second electrode terminal 312 and the pressure relief mechanism 313 are respectively provided with gaps with the enclosure 23, so as to facilitate the pressure relief of the pressure relief mechanism 313, and facilitate the setting of the connection structure between the first electrode terminal 311 and the second electrode terminal 312 between different battery cells 31.

[0135] Combination Figure 3 , Fig.14 and Fig.15 As shown, in some embodiments of the present application, the battery cell 31 is a strip-shaped battery, including a first end face and a second end face arranged opposite to each other in the vertical direction, wherein the first end face is connected to the heat exchange element 41, and the second end face is arranged toward the bottom plate 22. The battery cell 31 also includes a plurality of side faces arranged between the first end face and the second end face, wherein the side face facing the enclosure 23 is provided with a first electrode terminal 311, a second electrode terminal 312, and a pressure relief mechanism 313, and gaps are respectively provided between the first electrode terminal 311, the second electrode terminal 312, and the pressure relief mechanism 313 and the enclosure 23, so as to facilitate the pressure relief of the pressure relief mechanism 313, and facilitate the setting of the connection structure between the first electrode terminal 311 and the second electrode terminal 312 between different battery cells 31.

[0136] Combination Figure 3 , Fig.16 and Fig.17 As shown, in some embodiments of the present application, the battery cell 31 is a cylindrical battery, including a first end face and a second end face arranged opposite to each other in the vertical direction, wherein the first end face is connected to the heat exchange element 41, and the second end face is arranged toward the bottom plate 22. Among them, a first electrode terminal 311 is arranged on the first end face, and a second electrode terminal 312 and a pressure relief mechanism 313 are arranged on the second end face, and gaps are respectively arranged between the second electrode terminal 312 and the pressure relief mechanism 313 and the bottom plate 22, so as to facilitate the pressure relief of the pressure relief mechanism 313 and facilitate the setting of the connection structure between the second electrode terminals 312 of different battery cells 31.

[0137] Combination Figure 3 , Figure 4 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, a protrusion 24 is provided between any two adjacent heat exchange elements 41 among at least two heat exchange elements 41, the protrusion 24 is connected to the cover plate 21, and the surface of the protrusion 24 facing the battery cell 31 is flush with the surface of the heat exchange element 41 facing the battery cell 31.

[0138] Specifically, the heat exchange element 41 is fitted on the cover plate 21, and the portion between any two adjacent heat exchange elements 41 on the cover plate 21 is protruded toward the direction of the battery cell 31, thereby forming a protrusion 24. Alternatively, a groove for mounting the heat exchange element 41 is provided on the cover plate 21, and the heat exchange element 41 is disposed in the groove, and the portion between the grooves is protruded relative to the groove, thereby forming a protrusion 24.

[0139] Since any two adjacent heat exchange elements 41 are arranged at intervals, a protrusion 24 is provided between adjacent heat exchange elements 41, and the surface of the protrusion 24 facing the battery cell 31 is flush with the surface of the heat exchange element 41 facing the battery cell 31. Therefore, during the connection process between the battery cell 31 and the cover plate 21 through the heat exchange element 41, the battery cell 31 can be fixed by the protrusion 24 and the heat exchange element 41, thereby improving the fixing effect of the battery cell 31.

[0140] Combination Figures 1 to 3 As shown, the second aspect of the present application further proposes an electrical device, comprising a battery 10 according to any one of the above embodiments, wherein the battery 10 is used to provide electrical energy to the electrical device.

[0141] Combination Figures 1 to 3 As shown, in some embodiments of the second aspect of the present application, the electrical equipment is a vehicle 1 , wherein the cover plate 21 is configured as a floor of the driving compartment of the vehicle 1 .

[0142] By configuring the cover plate 21 as the cockpit floor of the vehicle 1, that is, at least a portion of the cockpit floor is used to form the cover plate 21, and since the heat exchange element 41 is thermally connected to the battery cell 31 and the cover plate 21, the heat exchange element 41 can effectively conduct heat to the battery cell 31 and the cockpit floor. When the temperature of the battery cell 31 or the cockpit floor is low, the battery cell 31 and the cockpit floor can be heated by the heat exchange element 41, or when the temperature of the battery cell 31 or the cockpit floor rises, the heat exchange element 41 is used to dissipate heat from the battery cell 31 and the cockpit floor, thereby reducing the temperature of the battery cell 31 and the cockpit floor, improving the comfort in the cockpit, and reducing the adverse effects of heat on the battery cell 31.

[0143] Combination Figures 1 to 3 As shown, in some embodiments of the present application, the cover plate 21 is connected to the seat cross beam 14 .

[0144] Since the heat exchange element 41 can effectively conduct heat to the battery cell 31 and the cover plate 21, by connecting the cover plate 21 to the seat cross beam 14, the seat cross beam 14 can be heat-conducted through the cover plate 21. Therefore, when the temperature of the seat cross beam 14 is low, the seat cross beam 14 can be heated by the heat exchange element 41, or when the temperature of the seat cross beam 14 rises, the seat cross beam 14 can be cooled by the heat exchange element 41, thereby reducing the temperature of the seat cross beam 14 and improving the comfort of the seat cross beam 14.

[0145] 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.

[0146] Combination Figures 1 to 4 As shown, in some embodiments of the present application, the vehicle 1 includes a cab floor and a battery 10 disposed under the cab floor, the battery 10 includes a box body 20, a cover plate 21, a battery cell 31 and a thermal management component 40, the box body 20 includes a receiving cavity and an opening connected to the receiving cavity, the cover plate 21 is located above the box body 20 and covers the opening, the battery cell 31 is placed in the receiving cavity, the thermal management component 40 includes a heat exchanger 41, a first current collector 42 and a second current collector 43, the heat exchanger 41 has a heat conduction cavity, the first current collector 42 and the second current collector 43 respectively have a collecting cavity, the heat conduction cavity and the collecting cavity are connected and are both used to accommodate a heat conduction medium. The heat exchanger 41 is located between the battery cell 31 and the cover plate 21, and is used to thermally connect the battery cell 31 and the cover plate 21, and at the same time, the heat exchanger 41 is used to carry the battery cell 31 and. There are multiple heat exchange components 41 and they are arranged at intervals along the first direction. The first current collector 42 extends along the first direction and is connected to the multiple heat exchange components 41 along the second direction. The first direction and the second direction are perpendicular to each other. Among them, the cover plate 21 is configured as a cockpit floor, that is, at least a part of the cockpit floor is used to form the cover plate 21 of the battery 10. The seat crossbeam 14 is also connected to the cover plate 21. The cover plate 21 is made of metal. The connection method between the heat exchange component 41 and the cover plate 21 includes one or more of bonding, bolting and welding. The heat exchange component 41 is bonded to at least part of the battery cells 31 by thermally conductive adhesive.

[0147] Combination Figure 3 and Figure 7As shown, the box body 20 includes a first side beam 231, and the first side beam 231 is located below the first current collector 42. The first side beam 231 is provided with a receiving groove 25 on the first surface 2311 facing the receiving cavity, and at least part of the first current collector 42 is arranged in the receiving groove 25. The minimum spacing dimension between the first current collector 42 and the battery cell 31 is greater than or equal to the minimum spacing dimension between the first surface 2311 and the battery cell 31. The minimum thickness dimension of the first current collector 42 along the vertical direction is h1, and the value range of h1 is 0.5mm≤h1≤50mm, preferably, the value range of h1 is 2mm≤h1≤20mm. The weight of the battery is M, wherein 0.0005mm / Kg≤h1 / M≤10mm / Kg, preferably, 0.002mm / Kg≤h1 / M≤2mm / Kg. The width dimension of the first current collecting member 42 along the second direction is h2, and the value range of h2 is 0.5mm≤h2≤100mm, preferably, the value range of h2 is 3mm≤h2≤20mm. The width dimension of the first side beam 231 along the second direction is h3, wherein 0.005<h2 / h3≤50, preferably, 0.03<h2 / h3≤10.

[0148] Combination Fig.10 and Fig.11 As shown, the battery cell 31 includes a first end face and a second end face, wherein the first end face is bonded to the heat exchange element 41 by a heat conductive adhesive, and the second end face is away from the heat exchange element 41 and is disposed toward the bottom plate 22 of the box body 20. A first electrode terminal 311, a second electrode terminal 312 and a pressure relief mechanism 313 are disposed on the second end face.

[0149] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various 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 each embodiment 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, It is characterized in that include: A box body and a cover plate, wherein the box body comprises a receiving cavity and an opening connected to the receiving cavity, and the cover plate is located above the box body and covers the opening; A battery cell, arranged in the accommodation cavity; A heat management component, the heat management component comprising a heat exchange member and a current collector, the heat exchange member is connected to the current collector and the internal cavity is communicated with the heat exchange member, the heat exchange member is used to carry the battery cell and is thermally connected to the battery cell; The support member is at least partially located below the current collecting member, and the support member is connected to the current collecting member.

2. The battery according to claim 1, It is characterized in that The heat exchange element is located between the battery cell and the cover plate, and is used for thermally connecting the battery cell and the cover plate.

3. The battery according to claim 1, It is characterized in that The box body includes a plurality of box beams connected to the cover plate, and the box beams form the support members.

4. The battery according to claim 3, It is characterized in that The box beam is formed with a receiving groove, and at least a portion of the current collecting member is located in the receiving groove.

5. The battery according to claim 4, It is characterized in that The box beam includes a partition beam, which is used to divide the accommodating cavity into at least two chambers. The at least two chambers include a first chamber for placing the battery cell. The surface of the partition beam facing the first chamber or the surface facing the cover plate has the accommodating groove.

6. The battery according to claim 4, It is characterized in that The box beam comprises a first side beam, and the surface of the first side beam facing the cover plate or the surface facing the accommodating cavity is provided with the accommodating groove.

7. The battery according to claim 6, It is characterized in that The first surface of the first side beam facing the accommodating cavity is provided with the accommodating groove, and the minimum spacing dimension between the current collecting member and the battery cell is greater than or equal to the minimum spacing dimension between the first surface and the battery cell.

8. The battery according to claim 1, It is characterized in that The minimum thickness dimension of the current collecting member along the vertical direction is h1, and the value range of h1 is 0.5mm≤h1≤50mm. Preferably, the value range of h1 is 2mm≤h1≤20mm.

9. The battery according to claim 8, It is characterized in that, The weight of the battery is M, wherein 0.0005 mm / Kg≤h1 / M≤10 mm / Kg, preferably, 0.002 mm / Kg≤h1 / M≤2 mm / Kg.

10. The battery according to claim 6, It is characterized in that There are a plurality of heat exchange elements arranged at intervals along a first direction, the current collecting element extends along the first direction and is connected to the plurality of heat exchange elements along a second direction, and the first direction and the second direction are perpendicular to each other. The width dimension of the current collecting member along the second direction is h2, and the value range of h2 is 0.5mm≤h2≤100mm. Preferably, the value range of h2 is 3mm≤h2≤20mm.

11. The battery according to claim 10, It is characterized in that The width dimension of the first side beam along the second direction is h3, wherein 0.005<h2 / h3≤50, preferably, 0.03<h2 / h3≤10.

12. The battery according to claim 3, It is characterized in that A receiving groove is provided on the surface of the cover plate facing the box body, the receiving groove is arranged directly above the box body beam, and at least a part of the current collecting member is located in the receiving groove.

13. The battery according to any one of claims 1 to 12, It is characterized in that The battery cell comprises a pressure relief mechanism and a first end surface facing the heat exchange element, and the pressure relief mechanism is located on other end surfaces of the battery cell except the first end surface.

14. The battery according to claim 13, It is characterized in that The battery cell further includes a second end surface facing away from the heat exchange element, and the pressure relief mechanism is located on the second end surface.

15. An electrical device, It is characterized in that The invention comprises a battery as claimed in any one of claims 1 to 14, wherein the battery is used to provide electrical energy to the electrical device.

16. The electrical equipment according to claim 15, It is characterized in that The electrical equipment is a vehicle, wherein the cover plate is configured as a cabin floor of the vehicle.

17. The electrical equipment according to claim 16, It is characterized in that The cover plate is connected with a seat crossbeam.

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